Dell 2350d manual

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Dell 2350d/dn, 3330dn
Service Manual
4 Jan 2010

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Information in this document is subject to change without notice.
2010 Dell Inc. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Inc.is strictly forbidden.
Trademarks used in this text: Dell and the DELL logo are trademarks of Dell Inc.
Other trademarks and trade names may be used in this document to refer to the entities claiming the marks and
names of their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its
own.

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Table of contents
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Maintenance approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Overview of the operator panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Print quality settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Tips on preventing jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Media trays and supply capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Connectivity and compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Types of print media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Diagnostics information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Symptom tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Service errors (9xx.xx’s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
User status and attendance messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Overview of the operator panel and menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Diagram of the printer menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Messages and error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
User attendance messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Cartridge error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Paper jam error codes (200-series) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Service error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Symptom tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
POST symptom table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Printer symptom table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Service checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Controller board service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Cooling fan service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Cover interlock switch service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Dead machine service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Fuser service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
LVPS/HVPS service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Main motor service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
Operator panel service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Paper feed service checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Media picks but stops halfway through the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Paper jam error indication during POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Media never picks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Table of contents iii
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
Notices and safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi
Laser notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Lithium warning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Safety information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

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Media occasionally mispicks or picks multiple sheets at once . . . . . . . . . . . . . . . . . . . . . . . . .2-27
Media skews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-27
Media “trees,” wrinkles, stacks poorly, or curls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-28
Parallel or USB port service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-28
Print quality service checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-29
Blank page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-29
Black page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-30
Heavy background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-30
Partial blank image/white spots (no repeating pattern) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-31
Variation in image density horizontally across page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-31
Poor fusing of image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-31
Light print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-32
White or black lines or bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-32
Toner on back of page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-32
Solving print quality problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-33
Printhead service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-36
Transfer roll service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-36
Diagnostic aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Accessing service menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Configuration menu (CONFIG MENU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Entering Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Available menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Maintenance Count Value (Maint Cnt Value) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Reset Maintenance Count Value (Reset Maint Cnt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Reset Photoconductor Maintenance Counter (Reset PC Cnt) . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Print Quality Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Menu Settings Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Panel Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
PPDS Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Demo Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Diagnostics menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Action For Prompts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Energy Conserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Font Sharpening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Exit Configuration Menu (Exit Config Menu) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Entering Diagnostics menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Margins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Quick Test page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Print Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Input sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Print Quality Pages (Prt Quality Pgs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Hardware Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
Panel Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
Button Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
DRAM Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
Duplex Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
Quick Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
Top Margin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
Left Margin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
Duplex Feed 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
Input Tray Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
Feed Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
iv Service Manual

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Output bin tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Feed Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Base Sensor Test (B. Sensor Test) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Printer Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Printed Page Count (Page Count) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Permanent Page Count (Perm Page Count) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Service Tag (only on some printers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Engine Setting 1 through 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Model Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Configuration ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Edge to Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Par S Strobe Adj (parallel strobe adjustment) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
EP Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
EP Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Fuser Temperature (Fuser Temp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Print Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Charge Roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Gap Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Automatic Darkness Adjustment (Auto Dark Adj) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Display Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Print Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Clear Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Exit Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Printhead assembly electronic adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Printhead assembly mechanical adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Repair information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Handling ESD-sensitive parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Removal procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
ACM pick tire roller removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Bezel removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Controller board removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Cover open sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Door mount removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Duplex removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Duplex/main motor gear drive interface removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Front access door removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Fuser removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Left side cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Lower front cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
LVPS/HVPS removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
Main motor gear drive removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
Manual feed solenoid removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35
Media ACM ASM feeder removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
Media feed clutch with cable removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
Media manual input sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42
Multipurpose feeder (MPF) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
Multipurpose feeder (MPF) feed clutch removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48
Nameplate removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-50
Operator panel removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-51
Paper input and duplex sensor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
Manual feed clutch removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
Table of contents v

Page: 5

Printhead removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-53
Rear door and rear cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-54
Rear exit guide assembly with sensor and reversing solenoid removal . . . . . . . . . . . . . . . . . . .4-56
Right side cover assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-58
Toner level sensor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-60
Top cover assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-61
Transfer roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-63
Upper front guide assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-64
Wear strip (tray 1 and 250-sheet tray 2) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-65
Wear strip (550-sheet tray 2) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-66
Locations and connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
E460dw controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Preventive maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Safety inspection guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Lubrication specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Maintenance kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Parts Catalog (Dell 3330dn). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
How to use this parts catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Assembly 1: Covers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Assembly 2: Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Assembly 3: Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Assembly 4: Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Assembly 5: Power cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-1
vi Service Manual
Dell 3330dn controller board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Dell 2350d/dn, 3330dn controller board connector pin values . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Parts Catalog (Dell 2350d/dn). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
How to use this parts catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Assembly 1: Covers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Assembly 3: Exchange units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Assembly 4: Power cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Assembly 5: Miscellaneous. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
Assembly 2: Electronics and frame
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Part number index (Dell 2350d/dn) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9
Part number index(Dell 3330dn). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-3

Page: 10

Notices and safety information xi

Page: 15

Preface
This manual contains maintenance procedures for service personnel. It is divided into the following chapters:
1. General information contains a general description of the printer and the maintenance approach used to
repair it. Special tools and test equipment, as well as general environmental and safety instructions, are
discussed.
2. Diagnostic information contains an error indicator table, symptom tables, and service checks used to
isolate failing field replaceable units (FRUs).
3. Diagnostic aids contains tests and checks used to locate or repeat symptoms of printer problems.
4. Repair information provides instructions for making printer adjustments and removing and installing
FRUs.
5. Connector locations uses illustrations to identify the connector locations and test points on the printer.
6. Preventive maintenance contains the lubrication specifications and recommendations to prevent
problems.
7. Parts catalog contains illustrations and part numbers for individual FRUs.
Conventions
Note: A note provides additional information.
Warning: A warning identifies something that might damage the product hardware or software.
There are several types of caution statements:
CAUTION
A caution identifies something that might cause a servicer harm.
CAUTION
This type of caution indicates there is a danger from hazardous voltage in the area of the
product where you are working. Unplug the product before you begin, or use caution if the
product must receive power in order to perform the task.
CAUTION
This type of caution indicates a hot surface.
CAUTION
This type of caution indicates a tipping hazard.
xvi Service Manual

Page: 16

General information 1-1
1. General information
minute on letter-size media (29 ppm on A4, 25ppm on legal).
Maintenance approach
The diagnostic information in this manual leads to the correct field replaceable unit (FRU) or part. Use the error
code charts, symptom index, and service checks to determine the symptom and repair the failure. See
“Diagnostics information” on page 2-1 for more information. See “Repair information” on page 4-1 to help
identify parts. After completing the repair, perform tests as needed to verify the repair.
The Dell 2350d/dn and 3330dn printersare monochrome laser printers designed for single users or
small workgroups.

Page: 17

1-2 Service Manual
Overview of the operator panel
The control panel consists of these items:
• A 4-line, liquid crystal display (APA) that can show both graphics and text
• Eight buttons: Back , Menus , Stop , Select , and Navigation (up arrow , down
arrow , left arrow , and right arrow )
• Keypad
• Indicator light
1 2 3
6
9
5
8
0
4
7
Menu Back
Stop

Page: 18

General information 1-3
Specifications
Memory
Print quality settings
Item Dell 2350dn Dell 3330dn
Standard memory B
M
4
6
Maximum memory B
M
6
7
5
Optional memory
128MB
256MB
512MB
Optional flash memory
64MB
256MB
Optional font cards (DBCS)
Option slots
1
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2
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¹ Both slots are active for either a 256MB Flash memory card, a font card, or a DLE. Multiple Flash, font, or DLE cards
are not supported.
Item
Print resolution
1200 Image quality¹
2400 Image quality²
600 X 600 dpi
1200 X 1200 dpi³
¹ 1200 Image quality is defined as 600 dpi with 2 bit IET (Image Technology) default mode for all models.
² 2400 Image quality is defined as 600 dpi with 4 bit IET.
³ True 1200 dpi at 1/2 the rated speed
32MB
288MB
N.A.
N.A.
N.A.
Dell 2350dn Dell 3330dn

Page: 19

1-4 Service Manual
Connectivity and compatibility
Item
Data stream emulations
Host based printing
PCL 5e and PCL 6
PostScript 3
PPDS migration tool
PDF v1.6
XPS¹
HTML (including DBCS)
Direct image
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Standard local connections
Parallel
USB*
Standard network connections
Ethernet (10/100 Base Tx)
Wireless ethernet 802.11b/g/n
Optional local connections
Optional network connections:
external print server support
*All models are USB 2.0 Certified devices supporting Hi-Speed data transfer.
¹ Includes the HD photo image format
² Includes support for the following graphics formats: TIFF, TIF, JPG, GIF, PNG, BMP, PCX, AND DCX
Dell 2350dn Dell 3330dn
N.A.
N.A.
N.A.
N.A.
N.A.
N.A. N.A.

Page: 20

General information 1-5
Media trays and supply capacity
Item
Available input trays
Integrated 250-sheet tray
50-sheet MP feeder
1-sheet manual feed slot x
x
Optional input sources
250-sheet drawer
550-sheet drawer
Maximum input sheet capacity 850
(excluding envelopes)
850
(excluding envelopes)
Manual/integrated print duplex d
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Available output trays
Standard 150-sheet sensing bin
Toner and photoconductor
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¹ Declared value in accordance with ISO/IEC 19752.
² Up to 30,000 pages, based on an average of 3 pages per job and approximately 5% coverage per page. Yields may
vary based on customer usage.
Dell 2350dn Dell 3330dn
2,000 pages (ship with capacity)
2,000 pages (standard capacity)
7,000 pages (ship with capacity)
7,000 pages (standard capacity)
6,000 pages¹ 14,000 pages¹
¹
¹
¹
¹

Page: 21

1-6 Service Manual
Types of print media
Note: Ensure trays are properly loaded. Never mix media types within a tray.
Source Sizes Types Weight Input capacity* (sheets)
Input tray 1
(250-sheet tray)
A4, A5, A6,JIS¹-B5,
letter, legal, executive,
oficio (Mexico)², folio²,
statement
Plain paper,
recycled, labels,
bond, letterhead,
preprinted, colored
paper, light paper,
heavy paper,
rough/cotton,
custom type [x]
60-90 g/m²
(16-24 lb)
• 250 paper
• 50 labels**
2nd Drawer option
(250/550-sheet
drawer)
A4, A5, JIS¹-B5, letter,
legal, executive, oficio
(Mexico)², folio²,
statement
Plain paper,
recycled, labels,
bond, letterhead,
preprinted, colored
paper, light paper,
heavy paper,
rough/cotton,
custom type [x]
60-90 g/m²
(16-24 lb)
• 250 paper
• 550 paper
• 50 labels**
Multipurpose
feeder
A4, A5, A6,JIS¹-B5,
letter, legal, executive,
oficio (Mexico)², folio²,
statement
Plain paper,
transparency,
recycled, labels,
bond, letterhead,
preprinted, colored
paper, light paper,
heavy paper,
rough/cotton,
custom type [x]
60-163 g/m²
(16-43 lb)
• 50 paper
• 15 lables**
• 10 transparencies
Card stock*** • 120-163 g/m²
(16-43 lb)
Index Bristol
• 75-163 g/m²
(46-100 lb)
Tag
20
7 ¾, 9, 10, DL, C5, B5,
other
Envelopes
Rough envelopes
75 g/m² (20 lb) 7
Duplex A4, letter, legal, oficio
(Mexico)², folio²
Plain paper,
recycled, bond,
letterhead,
preprinted, colored
paper, light paper,
heavy paper,
custom type [x]
60-90 g/m²
(16-24 lb)
* Capacity for 20 lb print media, unless otherwise noted.
** Use for occasional printing only.
*** Grain short is recommended. Use rear exit for best results.
¹Japanese Industry Standard
² If a source supports size sensing and is activated, then neither the “oficio” value nor the “folio” value appears in that
source’s list of supported media sizes. These values only appear in a source’s list of supported media sizes either when
the source is non-size sensing or when the source’s size sensing hardware is deactivated and then the device is power
cycled.

Page: 22

General information 1-7
Tips on preventing jams
Paper path
A Paper path A – B 125.3 mm
B Manual feed sensor B – C 9.0 mm
C Upper end feed rolls C – D 59.8 mm
D Input sensor D – E 44.9 mm
E Transfer roll E – F 112.7 mm
F Fuser F – G 21.4 mm
G Fuser exit rolls G – H 114.8 mm
H Fuser exit sensor H – I 7.5 mm
I Exit rolls I – J 17.0 mm
J Exit sensor/narrow media sensor I – K 211.7 mm
K Duplex unit K – L 93.4 mm
L Duplex sensor L – M 8.4 mm
M Auto compensator
G
H
K
L
D
M
A
B
C
E
F
J
I

Page: 23

1-8 Service Manual
Most paper jams can be avoided by correctly loading paper and specialty media in the printer.
The following hints can help prevent paper jams:
• Use only the recommended print media.
• Do not overload the print media sources. Make sure the stack height does not exceed the maximum height
indicated by the stack line on the labels in the sources.
• Do not load wrinkled, creased, damp, or curled print media.
• Flex, fan, and straighten print media before loading it. If jams do occur with the print media,then try feeding
one sheet at a time through the manual feeder.
• Do not mix print media sizes, weights, or types in the same print media source.
• Push all trays in firmly after loading them.
Note: Make sure the media stack is below the maximum media fill indicators on the 250-sheet tray before
pushing the tray into the printer.
• Make sure paper guides are positioned before loading the paper or specialty media.
• Do not remove trays while a job is printing.
• Before loading transparencies, fan the stack to prevent sheets from sticking together.
• Do not use envelopes that:
– Have excessive curl
– Are stuck together
– Are damaged in any way
– Contain windows, holes, perforations, cutouts, or embossments
– Have metal clasps, string ties, or metal folding bars
– Have postage stamps attached
– Have any exposed adhesive when the flap is in the sealed position
printing environment.
Tools
The removal and adjustment procedures require the following tools and equipment:
• Spring hook
• Needle nose pliers
• Volt-ohmmeter
• #1 and #2 Phillips screwdriver
• Slotted screwdriver
• Use only recommended media. Refer to the Card Stock & Label Guide available on the Dell Web site
at www.dell.com for more information about which media provides optimum results for the current

Page: 24

General information 1-9
Acronyms
ACM Autocompensator Mechanism (or paper feed)
ADC Analog-to-digital Converter
ASIC Application Specific Integrated Circuit
CBM Complete Bill Of Material
DEV Development Roll (of print cartridge/photoconductor
system)
DIMM Dual In-Line Memory Module
ENA External Network Adapter
FRU Field Replaceable Unit
HBP Host Based Printing
HVPS High Voltage Power Supply
LCD Liquid Crystal Diode
LED Light Emitting Diode
LSU Laser Scanning Unit
LVPS Low Voltage Power Supply
NVRAM Nonvolatile Random Access Memory
PC Photoconductor
PCL Printer Control Language
POR Power-On Reset
POST Power-On Self Test
PPDS Personal Printer Data Stream
PRC People’s Republic of China
TAR Toner Add Roll
SDR Synchronous Dynamic RAM
SWE Shipped With Equipment
USB Universal Serial Bus
V ac Volts alternating current
V dc Volts direct current

Page: 25

1-10 Service Manual

Page: 26

Diagnostics information 2-1
2. Diagnostics information
Start
CAUTION: Unplug power from the printer before connecting or disconnecting any cable,
assembly, or electronic card. This is a precaution for personal safety and to prevent damage to the
printer.
Use the service error code, user status message, user error message, symptom table, service checks, and
diagnostic aids in this chapter to determine the corrective action necessary to repair a malfunctioning printer.
They will lead you to solutions or service checks, including use of various tests.
Symptom tables
If your machine completes the “Power–On Self Test (POST) sequence” on page 2-1 without an error and you
have a symptom, then go to “Messages and error codes” on page 2-5. Locate your symptom, and take the
appropriate action.
Service errors (9xx.xx’s)
If a service error code appears while you are working on the machine, then go to “Messages and error codes”
on page 2-5, and take the indicated action for that error.
Service error codes are indicated by a three-digit error code followed by a period and additional numbers in the
format XXX.YY. In most cases, five digits are shown.
User status and attendance messages
• User status messages provide the user with information on the current status of the printer. Ready displays
on the first line of the display unless invoked, and then Power Saver displays. If a user status message is
displayed, then go to “Messages and error codes” on page 2-5.
• User attendance messages are indicated by a two- or three-digit error code that provides the user with
information that explains a problem with a print cartridge, paper jam, option, port, and so on. If a user error
message displays, then go to “User attendance messages” on page 2-5 and “Paper jam error codes
(200-series)” on page 2-9.
Power–On Self Test (POST) sequence
The following is an example of the events that occur during the POR sequence when the printer is turned on.
1. Diamonds are displayed on the operator panel.
2. While code is being loaded into DRAM, dots scroll across the operator panel.
3. A screen is displayed with the memory and processor speed. A typical example of this message is:
4. Performing Self Test is displayed.
5. Busy is displayed.
6. Close Door will be displayed if the cover is open.
7. Any cartridge errors, such as Defective Cartridge, are displayed.
8. Applicable maintenance messages are displayed.
9. Applicable toner low messages are displayed.
10. The printer displays Ready.
*64MB

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2-2 Service Manual
Overview of the operator panel and menus
The operator panel on your printer is a 4-line, back-lit, grayscale display that can show both graphics and text.
The Back, Menu, and Stop buttons are located to the left of the display, the navigation buttons are located
below the display, and the numeric pad is located to the right of the display.
The use of the buttons and the layout of the display panel are described in the following table.
Operator panel
Button Function
Back Press and release to return to the previous screen.
Menus Press and release to open the menus. The menus are available only when
the printer is in the Ready state.
Pressing also returns the operator panel to the top level menu screen if
pressed while in a menu.
Stop • Press once to return to the previous display screen while in the menus.
• Press twice to exit the menus and return to the Ready state.
• Press to stop printer activity.
• Press to cancel a print job. Stopping will display momentarily.
Stopped will then display to offer a list of settings that may be selected.
Navigation Up arrow and Down arrow buttons
Press or to scroll through menus, menu items, or printer options.
Left arrow and Right arrow buttons
Press or to increase or decrease a value or to scroll through text that
rolls to another screen.
Select button
Press and release to open a menu, to display the available values or settings,
or to save the displayed value as the new user default setting.
Note: When a new setting is saved as the default setting, it remains in effect until
new settings are saved or until factory defaults are restored. Settings chosen
from a software program can also change or override the user default settings
selected from the operator panel.
1 2 3
6
9
5
8
0
4
7
Menu
button
Back
button
Keypad
Select
button
LCD
display
Stop
button
Navigation
buttons
Indicator
light
Menu Back
Stop

Page: 28

Diagnostics information 2-3
Keypad Use the keypad to enter numbers or symbols on the display.
Indicator light The indicator light indicates printer status.
• If the light is off, then the printer power is off.
• If the light is blinking green, then the printer is warming up, processing data,
or printing.
• If the light is solid green, then the printer is on, but idle.
• If the light is blinking red, then operator panel intervention is needed.
Display panel The display shows messages describing the current state of the printer and
indicating possible printer problems that must be resolved.
The top line of the display is the header line. It will display the current status and
the Supplies (Warnings) status. This is where printer status, supplies messages,
and show-me screens are viewed.
Operator panel (Continued)
Button Function

Page: 29

2-4 Service Manual
Diagram of the printer menus
The diagram shows the menu index on the operator panel and the menus and items available under each menu.
Not all menus or selections will be available in all situations. These are accessed through the driver.
Paper Menu
Paper Source
Paper Size
Paper Type
Custom Types
Universal Setup
Substitute Size
Paper Texture
Paper Weight
Paper Loading
PostScript Menu
Print PS Error
Font Priority
USB Menu
Standard USB
Finishing Menu
Duplex
Duplex Bind
Copies
Blank Pages
Collation
Separator Sheets
Separator Source
Multipage Print
Multipage Order
Multipage View
Multipage Border
Job Menu
Reset Printer
Utilities Menu
Print Menus
Print Stats
Print Net Setup
Print Fonts
Print Directory
Factory Defaults
Format Flash
Defragment Flash
Hex Trace
Quality Menu
Print Resolution
Toner Darkness
Small Font Enh.
Setup Menu
Eco-Mode
Quiet Mode
Printer Language
Power Saver
Resource Save
Print Timeout
Wait Timeout
Auto Continue
Jam Recovery
Page Protect
Display Language
Toner Alarm
PCL Emul Menu
Font Source
Font Name
Point Size
Pitch
Symbol Set
Orientation
Lines per Page
A4 Width
Tray Renumber
Auto CR after LF
Auto LF after CR
Parallel Menu
Std Parallel
Network Menu
Standard Network
PPDS Menu
Orientation
Lines per Page
Lines per Inch
Page Format
Character Set
Best Fit
Tray 1 Renumber
Auto CR after LF
Auto LF after CR

Page: 30

Diagnostics information 2-5
Messages and error codes
User attendance messages
The printer control panel displays messages describing the current state of the printer and indicates possible
printer problems that must be resolved. This topic provides a list of all printer messages, explains what they
mean, and tells how to clear the messages.
The following table lists the messages in alphanumerical order. A message can also be located using the index.
User attendance messages
Message Action
Activating Demo Mode Wait for the message to clear.
Activating Menu Changes Wait for the message to clear.
Activating/Deactivating PPDS Wait for the message to clear.
Busy Wait for the message to clear, or cancel the print job.
Cancelling Job Wait for the message to clear.
Change Cartridge Invalid Refill The printer has detected an unsupported refilled cartridge. Remove the
indicated print cartridge, and install a new one.
Close door Close the specified door to clear the message.
Deactivating Demo Mode Wait for the message to clear.
Defragmenting Flash DO NOT POWER
OFF
Warning: Do not turn the printer off while this message is displayed.
Wait for the message to clear.
Disabling Menus Wait for the message to clear.
Note: The printer settings cannot be changed from the control panel while
the menus are disabled.
Enabling Menus Wait for the message to clear.
Flushing Buffer Wait for the message to clear.
Formatting Flash DO NOT POWER
OFF
Warning: Do not turn the printer off while this message is displayed.
Wait for the message to clear.
Invalid Engine Code Download valid engine code to the printer.
Invalid Standard Network Code The code in an internal print server is not valid. The printer cannot receive
and process jobs until valid code is programmed into the internal print
server. Download valid code to the internal print server.
Note: The network code can be downloaded while this message is
displayed.
Load manual feeder with <Custom
Type>
• Load the specified media in the manual feed tray or multipurpose
feeder.
• To ignore the manual feed request and print on media already
installed in one of the input sources, press .
If the printer finds a tray that has media with the correct media type
and size, then it feeds media from that tray. If the printer cannot find
a tray with the correct media type and size, then it prints on
whatever media is installed in the default input source.
• Cancel the current job.
Load manual feeder with <Custom
String>
Load manual feeder with <size>
Load manual feeder with <size>
<type>

Page: 31

2-6 Service Manual
Load <src> with <Custom Type
Name>
• Load the input source with the correct type and size media.
• Cancel the current job.
Load <src> with <Custom String>
Load <src> <size>
Load <src> <type> <size>
Maintenance Replace the maintenance items and, if necessary, reset the printer
maintenance counter.
Menus Disabled The printer menus are disabled. The printer settings cannot be changed
from the control panel.
Note: A job can still be canceled.
Contact a system support person.
Network A network interface is the active communication link.
Network Card Busy An internal print server (also called an internal network adapter or INA) is
being reset. Wait for the message to clear.
Not Ready The printer is not ready to receive or process data. Someone pressed
to take the printer offline. Press to make the printer ready to receive
jobs.
Parallel A parallel interface is the active communication link.
Performing Self Test The printer is running the series of start-up tests it performs after it is
turned on. Wait for the message to clear.
Power Saver • Send a job to print.
• Press to warm the printer to normal operating temperature and
display the Ready message.
Printing Directory List The printer is processing or printing a directory of all files stored in flash
memory. Wait for the message to clear.
Printing Font List The printer is processing or printing a list of all available fonts for the
specified printer language. Wait for the message to clear.
Printing Menu Settings The printer is processing or printing the menu settings page. Wait for the
message to clear.
Printing Device Statistics The printer is printing statistical information about the printer. Wait for the
message to clear.
Printing Quality Test Pages The printer is formatting and printing the Print Quality Test, which consists
of 4 pages. Page 1 contains a mixture of graphics and text, pages 2 and 3
contain only graphics, and page 4 is a blank page. If Duplex is turned on,
then the pages are duplexed; otherwise they are simplexed. Wait for the
message to clear.
Prog Engine Code
DO NOT POWER OFF
The printer is programming new engine code. Wait for the message to
clear and the printer to reset.
Warning: Do not turn the printer off while this message is displayed.
Program Flash
DO NOT POWER OFF
The printer is storing resources, such as fonts or macros, in flash memory.
Wait for the message to clear.
Warning: Do not turn the printer off while this message is displayed.
User attendance messages (Continued)
Message Action

Page: 32

Diagnostics information 2-7
Prog System Code
DO NOT POWER OFF
The printer is programming new system code. Wait for the message to
clear and the printer to reset.
Warning: Do not turn the printer off while this message is displayed.
Ready Send a job to print.
Remove Paper Standard Bin The standard output bin is full.
Resetting Maint Cnt Valu The printer is resetting the counter that tracks wear on the fuser.
Resetting PC Cnt Value The printer is resetting the counter that tracks wear on the photoconductor.
Resetting the Printer Wait for the message to clear.
Res Reduced The printer is reducing the resolution of a page in the current job from 600
dots per inch (dpi) to 300 dpi to prevent a 38 Memory Full error. Res
Reduced remains on the display while the job prints.
Restoring Factory Defaults Wait for the message to clear.
Note: When factory default settings are restored:
• All downloaded resources (fonts, macros, symbol sets) in the
printer memory are deleted.
• All menu settings return to the factory default except:
– The Display Language setting in the Setup Menu
– All settings in the Parallel Menu, Network Menu, and
USB Menu
Std Bin Full The standard bin is full.
Toner Low • Replace the toner cartridge.
• Press to clear the message and continue printing.
Tray <x> Missing Insert the tray into the printer.
USB The printer is processing data through the specified USB port.
Waiting The printer has received a page of data to print, but is waiting for an End of
Job command, a Form Feed command, or additional data.
• Press to print the contents of the buffer.
• Cancel the current job.
User attendance messages (Continued)
Message Action

Page: 33

2-8 Service Manual
Cartridge error messages
Error Description Action
30.XX Cartridge errors
30.01 No bucket transition out of the top bucket. If the cartridge
has not been refilled, then it usually is a mechanical
problem with the cartridge. During development, it could
also have the wrong chip installed.
Replace the cartridge.
30.02 No bucket transition out of the middle buckets. If the
cartridge has not been refilled, then it usually is a
mechanical problem with the cartridge. During
development, it could also have the wrong chip installed.
30.03 No bucket transition out of the lowest bucket. If the cartridge
has not been refilled, then it usually is a mechanical
problem with the cartridge. During development, it could
also have the wrong chip installed.
30.04 Excessive bucket jump. If the cartridge has not been
refilled, then it usually is a mechanical problem with the
cartridge.
30.05 Cartridge has run past it's life such that the cartridge has to
been totally void of printable toner. During development, it
could also have the wrong chip installed.
31.XX Defective cartridge errors
31.01 Cartridge missing. Smartchip installed backwards or
missing. Cable loose on controller board. Bad, dirty or
broken contacts. Bad chip. Wrong cartridge installed.
Replace the cartridge.
31.02 Authentication Failure. Failed to authenticate the device,
possible cartridge is from another family, or the chip is
defective.
31.03 ECC Failure. Clone or defective device.
31.04 Read Failure. Intermittent contact with the device, cable on
system card not seated well, gross electrical noise,
defective device.
Check the contact pins (on the
right side, under the cartridge) for
damage. Replace if possible.
31.05 Write Failure. Intermittent contact with the device, cable on
system card not seated well, gross electrical noise,
defective device.
31.06 SRL. Clone device. Replace the cartridge.
31.07 Penalty. Too many POR/CC events have occurred.
31.08 Unsupported SC Firmware. Clone or defective device.
32.XX Unsupported cartridge errors

Page: 34

Diagnostics information 2-9
Paper jam error codes (200-series)
Note: The Event log (See “Event log” on page 3-16) will list any of these errors that have occurred.
Repeating jams or jam messages can be caused by any of the following:
• Faulty/contaminated pick solenoids or worn cams of the solenoids.
• Faulty/contaminated flags or springs.
• Debris in the paper path.
• Media not of the specified length.
32.01 MC CC Mismatch. Incorrect cartridge installed in printer or
printer settings are incorrect (based on cartridge capacity).
Replace the cartridge.
32.02 Down-level device installed on cartridge.
32.03 Down-level device installed on cartridge.
32.04 Unknown toner type indicated by the device.
32.05 OEM Mismatch. Incorrect cartridge installed in printer, or
printer settings are incorrect (based on cartridge OEM
identification).
32.06 Printer already married to a SWE cartridge. Must purchase
after-market cartridge.
Replace the cartridge with a new
one from the correct geography.
32.07 SWE cartridge already married to a printer.
Error Description Action
200.00 Paper jam around input sensor. Remove the PC kit and paper or debris at the input
sensor.
200.01 Classic input jam. The media is too long over the input
sensor. Possible causes include multi-sheet feed, tray
size sensing problem, and media slippage.
First, remove the PC kit and paper or debric at the
input sensor. Then, inspect the flag on the input
sensor. It should rotate freely. Replace the sensor if
necessary. Finally, check the paper size settings in
the printer and the driver.
200.02 The main input sensor never became uncovered from
the sheet ahead.
200.03 The video never started on the page at the input
sensor within two inches after hitting the input sensor
Check the printhead. See “Printhead service
check” on page 2-38.
200.04 The media at the input sensor before interrupt
occurred–not enough time elapsed since the printhead
started to expect the printhead mirror motor lock.
Possible causes include bouncy sensor or
exceptionally fast pick– perhaps due to media pre-
staged in the source tray.
Carefully remove the tray and notice if the leading
edge of the media is pointed upward and out of the
tray. If so, then inspect the tray wear strips and
replace if necessary.
Inspect the input sensor flag and replace it if it does
not rotate freely or is too loose.
200.06 Imaged page not expected page (bouncy passthru
sensor)
Remove the toner cartridge/PC kit. At the front,
remove the upper front guide, and inspect the flag on
the manual input sensor. If the flag is loose, then
replace it. See “Media manual input sensor
removal” on page 4-42.
200.08 Media reached the input sensor before the EP was
ready
Inspect the tray for prestaging. Verify the proper
media and inspect the tray wear strips. Replace the
wear strips if necessary.
Error Description Action

Page: 35

2-10 Service Manual
200.09 Transfer servo never started Inspect the LVPS/HVPS. See “Controller board
service check” on page 2-23.
200.12 Media detected at manual feeder sensor when not
expected. Possible causes include user insert of media
when motor is running or pre-staged media in the tray.
Carefully remove the tray and notice if the leading
edge of the media is pointed upward and out of the
tray. If so, then inspect the tray wear strips and
replace if necessary.
Inspect the input sensor flag and replace it if it does
not rotate freely or is too loose.
200.13 The input sensor is covered when the media is not
expected (media in machine during warm-up)
Remove the toner cartridge/PC kit and inspect the
input sensor flag. Replace the flag if necessary.
200.14 Trailing edge cleared manual feed, but did not
successfully debounce the sensor. Potential causes
are a small gap or a bouncy manual feed sensor.
Remove the toner cartridge/PC kit. At the front,
remove the upper front guide, and inspect the flag on
the manual input sensor. If the flag is loose, then
replace it. See “Media manual input sensor
removal” on page 4-42.
200.15 UNRECOVERABLE NO GAP JAM. Engine detected
no gap at the manual feeder sensor, attempted to open
the gap by stopping the feed rolls, but no trailing edge
was ever seen at the input sensor.
Remove the toner cartridge/PC kit. At the front,
remove the upper front guide, and inspect the flag on
the manual input sensor. If the flag is loose, then
replace it. See “Media manual input sensor
removal” on page 4-42.
Verify that the media is approved. Inspect the wear
strips in the input tray, and replace if necessary.
200.16 Transport motor error detected Inspect the main motor. See “Main motor service
check” on page 2-27.
200.17 Took too long to ramp up transport motor
200.18 Manual feeder sensor never became uncovered from
the sheet ahead.
Remove the toner cartridge/PC kit. At the front,
remove the upper front guide, and inspect the flag on
the manual input sensor. If the flag is loose, then
replace it. See “Media manual input sensor
removal” on page 4-42.
200.19 The media never reached the input sensor, but was
detected at manual feeder sensor.
Remove the toner cartridge/PC kit, and inspect for
debris in the paper path. Check the bottom of the PC
kit for any obstructions. Remove the upper front
guide, and inspect the pinch rollers.
200.20 The media is too long over the manual feeder sensor.
Possible causes include multi-sheet feed, media size
(length) problem, pre-staged media in the tray.
Verify that the media is approved. Inspect the wear
strips in the tray, and replace if they are worn.
200.22 FAILED SMALL GAP OR NO GAP JAM RECOVERY.
Engine detected small gap or no gap at the manual
feeder sensor, opened the gap by stopping the feed
rolls, but never saw the leading edge of the second
page at the input sensor.
200.23 Laser Servo never started due to potential conflict with
the transfer servo. Possible causes: slow or missing
transport motor positional feedback, or the media is
transferred too quickly to the input sensor.
Verify that the media is approved. Inspect the wear
strips in the tray, and replace if they are worn.
Check the main motor. See “Main motor service
check” on page 2-27.
Error Description Action

Page: 36

Diagnostics information 2-11
200.24 The measured gap at the input sensor is too small to
meet the video delivery requirements. (There is not
enough time since prior image finished to start new
image)
Verify that the media is approved. Inspect the wear
strips in the tray, and replace if they are worn.
200.26 The trailing edge never cleared the input sensor when
feeding out the media that was detected during warm-
up.
200.27 Printhead Driver: Mirror motor fell out of lock condition
after the media at the input sensor–more time elapsed
since the printhead than the expected stable lock time,
but less than the printhead jitter-stable specification.
Check the printhead. See “Printhead service
check” on page 2-38.
Mirror motor fell out of lock condition after media at the
input sensor–more time elapsed since the printhead
than expected stable lock time, but less than the
printhead jitter-stable specification.
200.28 First writing line of a page at the developer nip, but
laser servo cleanup is not complete. Likely pre staged
media or a fast paper feed.
Verify that the media is approved. Inspect the wear
strips in the tray, and replace if they are worn.
200.29 Printhead drive control out of range due to an external
event beyond what the control is designed to handle.
Probable causes: ESD or noise on hsync signal.
Check the cable routing for the printhead. See
“Printhead service check” on page 2-38.
200.30 Narrow media sensor covered during warm-up. Check that the narrow media flag rotates freely and
securely. If it is dislodged or broken, then repalce the
rear exit guide. See “Rear exit guide assembly
with sensor and reversing solenoid removal” on
page 4-56.
200.32 Media more than 14 inches too long over the manual
feeder sensor. Possible causes include multi-sheet
feed or pre-staged media in the tray.
Verify that the media is approved. Inspect the wear
strips in the tray, and replace if they are worn.
200.33 Page from tray 1 did not reach the input sensor after
multiple attempts. Page did make it out of the tray at
least as far as the manual feeder sensor. Possible
cause is that the page stalled at the alignment gate.
Verify that the pick tires are clean, not worn, or filled
with paper dust. Replace the pick tires if necessary.
See “ACM pick tire roller removal” on page 4-3.
The alignment roller may be binding. Call the next
level of support.
200.34 Timed out waiting for page from tray 1 to reach the
input sensor after multiple pick attempts, but the page
was later detected at the input sensor while waiting for
any page(s) ahead to clear the paper path. Possible
cause is that the page is delayed at the alignment gate.
200.35 Failed to create hsync during auto alignment Check the printhead. See “Printhead service
check” on page 2-38.
200.36 Lost hsyncs during auto alignment
200.37 Timeout on data collection during auto alignment
200.38 Interpage servo gap is smaller than expected for
printhead offset target evaluation
200.42 Rogue sheet is at the manual feed sensor while
flushing the paper path prior to declaring MPF source
empty.
Retry alignment.
200.43 The media is at the input sensor before interruption
occurs. Possible causes include bouncy sensor or an
exceptionally small gap, perhaps due to the media
being pre-staged in the source tray.
Remove the media, realign the stock, and re-insert.
Do not let the top sheets to go beyond the wear
strips.
Error Description Action

Page: 37

2-12 Service Manual
201.00 Paper jam between input and exit sensor Remove the toner cartridge/PC kit and check for
obstructions between the input sensor and the fuser.
if the media continues to stop at the entrance or in
the fuser, then replace the fuser. See “Fuser
removal” on page 4-21.
201.01 Transport motor identification failed to identify either
motor after two tries.
Check the main motor. See “Main motor service
check” on page 2-27.
201.02 Exit sensor never made by leading edge of page. Also
known as internal jam.
Remove the PC kit and paper or debris at the input
sensor.
201.03 Video never started on the page at the input sensor
within two inches after hitting the input sensor
Check the printhead. See “Printhead service
check” on page 2-38.
201.05 Restart attempted after an internal jam without the
cover open/close event. It is likely that the jam was
never cleared.
Check the paper path and remove any media in the
path.
201.25 Exit sensor never made by leading edge of media
when feeding out the media that was detected during
warm-up.
Remove the toner cartridge/PC kit and check for
obstructions between the input sensor and the fuser.
if the media continues to stop at the entrance or in
the fuser, then replace the fuser. See “Fuser
removal” on page 4-21.
201.26 Page at fuser nip before fuser started ramping toward
desired temperature. Indicates code may be receiving
more interrupts than intended
201.27 Page at fuser nip before fuser reached acceptable
operating temperature. Page arrived at fuser earlier
than expected, so it was probably staged prematurely.
202.00 Paper jam around exit sensor. Open the rear cover and look for obstructions in the
path way. If there are none, then inspect for damage
at the fuser, rear door, exit guide, and top cover.
Often, the leading edge of the media will indicate the
vacinity of damage. If damage is found, then replace
the damaged part.
Note: Print a page with the rear door open to isolate
the fuser from the other parts.
202.01 Exit sensor never broke on the trailing edge of the
sheet at the exit sensor.
Open the rear door, and inspect the flag on the exit
sensor. The flag is located behind the fuser exit
rollers, about mid printer. If the flag does not rotate
freely or has no spring action, then replace the fuser.
See “Fuser removal” on page 4-21.
202.02 Exit sensor never broke from sheet ahead of page
heading toward the exit sensor.
202.06 Exit sensor bounced
202.13 Exit sensor covered, media not expected (media not in
machine during warm-up)
202.25 Exit sensor never broke from the sheet ahead of the
page heading toward the exit sensor when feeding out
the media detected during warm-up.
202.26 Trailing edge never cleared exit sensor when feeding
out media that was detected during warm-up.
Open the rear door, and inspect the flag on the exit
sensor. The flag is located behind the fuser exit
rollers, about mid printer. If the flag does not rotate
freely or has no spring action, then replace the fuser.
See “Fuser removal” on page 4-21.
Error Description Action

Page: 38

Diagnostics information 2-13
202.32 Long media or shingled multi feed stopped before
sending to duplex.
Check the paper setting and correct if needed. While
feeding along the media, and immediately after it
enters the output bin, open the reat door and
obscure the trailing edge and the sensor flag. If there
is slippage in the exit guide, then replace the exit
guide. See “Rear exit guide assembly with sensor
and reversing solenoid removal” on page 4-56.
231.00 Duplex jam while reversing into the device Open the rear cover and look for obstructions
between the rear cover ribs, the fuser exit rollers, and
below. The media entering the duplex passes
outside the exit roller while the media exiting the
fuser passes above and inside the exit rollers.
Remove the tray, open the duplex door, and remove
the obstructions. If there are no obstructions and the
problem persists, then disconnect all of the cables,
tilt the printer onto its back (be sure to protect the
antenna on a wireless unit), and inspect the flag of
the duplex sensor. If the flag does not rotate freely,
then replace the paper input and duplex sensor. See
“Paper input and duplex sensor assembly
removal” on page 4-52.
Check the belt and drive of the duplex unit. Replace
it if necessary.
231.01 Duplex sensor never made by leading edge reversing
into the duplex.
231.02 Bouncy duplex sensor never made.
232.00 Duplex jam while staging in the device
232.01 Duplex sensor never broke by the sheet ahead after
reversing into the duplex.
232.02 Page in duplex ahead of current reversing page never
staged.
233.00 Duplex jam while picking from the device
233.01 Page in duplex never picked.
233.02 Feed error picking from the duplex.
233.03 Paper never reached the input sensor, but was
detected at the manual feed sensor.
234.01 Duplex sensor covered during warm-up.
235.01 Invalid duplex media Check the media. Duplex supports A4, letter, legal,
oficio, and folio media sizes.
241.00 Paper jam near tray 1. Remove the tray and inspect the media path for
obstructions. Check the pick rollers. Replace the pick
rollers if they are worn or clogged with dust. See
“ACM pick tire roller removal” on page 4-3. Also
check the wear strips, and replace if necessary.
241.10 Second pick attempt failed from Tray 1
241.12 Second pick from manual feeder, tray 1, or feeder
failed when the media was in the source while other
sheets were committed to the paper path.
Remove the tray and inspect the media path for
obstructions. Check the pick rollers. Replace the pick
rollers if they are worn or clogged with dust. See
“ACM pick tire roller removal” on page 4-3. Also
check the wear strips and the manual feeder, and
replace if necessary.
241.16 Failed to feed from tray 1. Pages in the paper path
have been flushed to the output bin.
241.17 MISIDENTIFIED SMALL GAP JAM. Engine detected
small gap at the manual feeder sensor, attempted to
open the gap by stopping the feed rolls, trailing edge
was seen at the input sensor, manual feeder sensor is
no longer covered.
241.19 Second pick attempted failed from Tray 1, no pages
printed since calling a 241.10 or a prior 241.19.
242.00 Paper jam near tray 2. Remove Tray 2 and inspect for obstruction in the
paper path. Check the pick tires for wear or paper
dust. Replace if necessary. Check the wear strips
and replace if necessary.
242.01 Took too long to ramp up dc feed motor Check the connection with Tray 2. (Lift the printer
and re-set it on Tray 2.) If the error persists, then
replace Tray 2.
242.08 Received lots of dc feed interrupts before losing them
Error Description Action

Page: 39

2-14 Service Manual
242.10 Second pick attempt failed from Tray 2 Remove Tray 2 and inspect for obstruction in the
paper path. Check the pick tires for wear or paper
dust. Replace if necessary. Check the wear strips
and replace if necessary.
242.12 Second pick from manual feeder, tray 1, or feeder
failed when media was in the source, other sheets
were committed to the paper path.
Check the wear strips and replace them if worn.
242.16 Failed to feed from tray 2. Pages in the paper path
have been flushed to the output bin.
Remove Tray 2 and inspect for obstruction in the
paper path. Check the pick tires for wear or paper
dust. Replace if necessary. Check the wear strips
and replace if necessary.
251.00 Paper jam near the manual feeder. Inspect the pick roller on the MPF or the rollers on
the manual feed. If the MPF pick roller is damaged or
worn, then replace the MPF. For a printer with a
manual feed only (no MPF), clean the roller.
251.10 Second pick attempt failed from manual feeder.
251.11 Failed to feed from manual feeder. Pages in the paper
path have been flushed to the output bin.
251.12 Second pick from manual feeder, tray 1, or feeder
failed when media was in the source while the other
sheets were committed to the paper path.
251.19 Media never reached the input sensor from the manual
feeder.
251.20 The media in the MPF has been pushed in too far. Remove the media, realign the stock, and re-insert.
Do not let the top sheets to go beyond the wear
strips.
251.21 The media in the MPF has been pushed in too far.
Error Description Action

Page: 40

Diagnostics information 2-15
Service error codes
Service error codes are generally non-recoverable except in an intermittent condition when the printer can be
put into POR to temporarily recover from the error condition.
Error Description Action
Engine software service errors
902.xx Engine software error Replace the controller board. See “Controller
board service check” on page 2-23
DC pick motor errors
914.00 DC pick motor error
914.01 Lost encoder feedback
Transfer service errors
917.xx Transfer service error Replace the transfer roll. See “Transfer roll
service check” on page 2-38.
Fuser service errors
920.00 Under temperature during steady state control. Replace the fuser. See “Fuser service check”
on page 2-26.
920.01 Fuser took too long to heat up after transitioning to new
enhanced mode.
920.02 Fuser fell too far below desired temperature while
printing.
920.03 Fuser too cool while checking for slope change.
920.04 Fuser too cool when heating to desired temperature
after slope change.
920.05 Fuser under temperature while printing
920.06 Fuser under temperature while printing
920.07 Fuser under temperature while printing
920.08 Fuser temperature did not increase after IR recovery.
920.20 Belt fuser under temperature during steady state control.
This can occur in printing or standby modes.
921.00 Under temperature during standby control.
921.01 Fuser temperature did not reach standby temperature
after two attempts
922.00 Fuser failed to ramp to target temperature
922.01 Fuser did not reach standby temperature in time
(standby control)
922.02 Hot roll took too long to reach the beginning lamp
detection temperature.
922.03 Hot roll reached final lamp detection temperature, but
took longer than largest time in lookup table.
922.04 Hot roll timed out in trying to reach the final lamp
detection temperature.

Page: 41

2-16 Service Manual
922.05 Did not roll over to a steady state control in time after the
hot roll lamp detection.
Replace the fuser. See “Fuser service check”
on page 2-26.
922.06 Hot roll did not reach the operating temperature in time
(new enhanced control).
922.07 Media reached fuser nip, and fuser is under temperature
922.08 Fuser warm-up failure (motor start condition)
922.09 Fuser warm-up failure (compression set)
922.20 Belt fuser failed to reach the preheat temperature for the
motor to start during warm-up.
922.21 Belt fuser was under temperature when the media
reached the fuser nip.
923.00 Fuser is over temperature.
923.01 Fuser is over temperature. This applies to the fuser and
belt fusers.
924.00 Open thermistor check.
924.01 Open thermistor check failure. This applies to the fuser
and belt fusers.
924.02 Open thermistor check failure. The ADC failed to
converge. Possible noisy thermistor signal. This applies
to the fuser and belt fusers.
925.xx Wrong fuser installed. The fuser type stored in the
cartridge ID does not match the actual fuser installed in
the printer.
Fan service errors
927.00 Service fan error Replace the fan. See “Cooling fan service
check” on page 2-24.
927.03 Main fan took too long to ramp up
927.04 Main fan is under speed or stalled during speed
adjustment state
927.05 Main fan overspeed during speed adjustment state.
927.06 Main fan capture data is invalid, and speed control is at
maximum in fan control idle state
927.07 Main fan capture data is invalid, and speed control is at
maximum in fan control adjustment state.
Toner service errors
929.00 Toner sensor error Remove the toner cartridge, and shake it Try a
different toner cartridge, if possible. If the error
persists, then replace the toner level sensor. See
“Toner level sensor removal” on page 4-60.
929.01 No home window
929.02 No sensor transition (closed)
929.03 No sensor transition (open)
Printhead service errors
930.00 Wrong printhead installed Replace the printhead. See “Printhead service
check” on page 2-38.
931.00 No first hsync
Error Description Action

Page: 42

Diagnostics information 2-17
931.01 No first hsync Replace the printhead. See “Printhead service
check” on page 2-38.
932.00 Lost hsyncs
932.01 Lost hsyncs
933.01 Printhead boost signal failure
934.00 Mirror motor lost lock.
934.01 Mirror motor lost lock.
935.00 No initial mirror motor lock
935.01 Timed out waiting for mirror motor lock
935.10 Printhead sweep error, swept through Hz range without
finding the resonant frequency
935.12 Printhead sweep error, coarse sweep state
935.15 Printhead open-loop error, check prelim amp state
935.16 Printhead open-loop error, enable amp Kp state
935.17 Printhead closed-loop error, amp Kp failed to converge
935.18 Printhead closed-loop error, enable amp Ki state
935.19 Printhead closed-loop error, amp Ki failed to converge
935.20 Printhead closed-loop error, enable offset controller
state
935.21 Printhead closed-loop error, load scan regs state
935.22 Printhead closed-loop error, fwd and rev capture times
differ by too much
935.23 Printhead closed-loop error, check sweep accuracy state
935.25 Printhead closed-loop error, off-resonant PI effort state
935.26 Timed out on POR sweep
935.27 Exceeded maximum open loop drive level when
configuring for sweep re-try.
935.28 Exceeded maximum open loop drive level when setting
operating Hz.
Transport motor service errors
936.01 No lock detected at normal motor start Replace the main motor gear drive. See “Main
motor service check” on page 2-27
936.02 No lock detected at motor start for motor ID
936.03 No halls detected at motor start
936.04 Failed to stop within timeout
936.05 Stall detected during speed control
Error Description Action

Page: 43

2-18 Service Manual
937.00 Main transport motor lost lock Replace the main motor gear drive. See “Main
motor service check” on page 2-27
937.01 Main transport motor lost lock, detected by engine
control
937.02 Overspeed detected during position control
937.03 Overspeed detected during speed control
Power supply service errors
940.00 LVPS service error Replace the LVPS/HVPS. See “LVPS/HVPS
service check” on page 2-26.
940.01 Line frequency outside allowed range of 45Hz-64Hz
940.02 Line frequency below 43Hz
940.03 No zero cross detected on belt fuser model
Controller board and operator panel service errors
948.xx Failed engine board Replace the controller board. See “Controller
board service check” on page 2-23.
949.xx
950.xx Mismatch between EEPROM and mirror memory
Note: A new controller board or operator panel has been
installed, and has not been properly prepared for this
use. Install a new note. Do not install both the controller
board and the operator panel at the same time without a
POR in between.
Install a new controller bored or operator panel.
See “Controller board service check” on
page 2-23 or “Operator panel service check”
on page 2-28.
951.xx Error with secure NVRAM on the controller board Replace the controller board. See “Controller
board service check” on page 2-23.
952.xx A recoverable MVRAM Cyclic Redundancy Check error
occurred.
Performing POR will clear this error.
953.xx NVRAM chip failure with mirror Replace the operator panel. See “Operator
panel service check” on page 2-28.
954.xx NVRAM chip failure with system part. Replace the controller board. See “Controller
board service check” on page 2-23.
955.xx The code ROM or NAND flash failed the Cyclic
Redundancy Check or the NAND experienced an
uncorrectible multi-bit failure.
956.00 RIP card failure: processor failure
956.01 Processor overtemp
957.xx RIP card failure: ASIC failure
958.xx Printer has performed more than 100 “shift and reflash”
operations as a result of ECC bit corrections
Firmware or controller board errors
959.01 Controller verification failure of pensive boot code Call the next level of support to update the
firmware, or replace the controller board. See
“Controller board service check” on
page 2-23.
959.02 Failure to authenticate Signature Verification Code
Error Description Action

Page: 44

Diagnostics information 2-19
959.03 Signature Verification Code failed to authenticate a code
partition.
Update firmware and call the next level of
support, or replace the controller board. See
“Controller board service check” on
page 2-23.
959.04 Jump to unverified address
959.05 Unknown boot failure Update firmware and call the next level of
support, or replace the controller board. See
“Controller board service check” on
page 2-23
959.20 Pensive hardware failure Replace the controller board. See “Controller
board service check” on page 2-23.
959.21 Pensive did not respond to command request.
959.22 Challenge secret failure
959.23 Pensive self test failed during initialization. Replace the controller board. See “Controller
board service check” on page 2-23.
959.24 EEPROM retention error
959.25 Insufficient device space during HW prog
959.26 Incremental counter reset exceeds maximum value
959.27 Increment count failed due to max value limit
959.28 Invalid SP memory configuration
Memory and emulation errors
960.xx RAM memory error: RAM soldered on the controller
board is bad
Replace the controller board. See “Controller
board service check” on page 2-23.
961.xx RAM memory error: memory card in slot is bad. Replace the memory card.
964.xx Download Emulation Cyclic Redundancy Check Error:
checksum failure detected in the emulation header or
emulation file.
Disable the Download Emulation. Program the
download emulation into the firmware card again.
If this does not resolve the problem, then replace
the firmware card and download the emulation
again.
Network errors
975.xx Unrecognizable network Call the next level of support.
976.xx Unrecoverable software error in network port
978.xx Bad checksum while programming network port
979.xx Flash parts failed while programing network port
Other errors
980.xx Engine experiencing unreliable communication with the
specified device
Call the next level of support.
981.xx Engine protocol violation detected by the specified
device
982.xx Communications error detected by the specified device
983.xx Invalid command received by the specified device
Error Description Action

Page: 45

2-20 Service Manual
984.xx Invalid command parameter received by the specidied
device
Call the next level of support.
990.xx An equipment check condition has occurred in the
specified device, but the device is unable to identify the
exact component failure.
991.xx The specified device has detected an equipment check
in its system card.
Error Description Action

Page: 46

Diagnostics information 2-21
Symptom tables
POST symptom table
Note: Investigate any displayed codes before proceeding with these symptoms. For example, a missing toner cartridge will
prevent POST from completing.
Symptom Action
The main motor, cooling fan, and fuser do not come
on.
See “Cover interlock switch service check” on page 2-24.
POST completes, but the LCD does not come on. See “Operator panel service check” on page 2-28.
Main motor does not come on. See “Main motor service check” on page 2-27.
Fan does not come on. See “Cooling fan service check” on page 2-24.
Fuser does not cycle. See “Fuser service check” on page 2-26.
Fuser does not turn on and off. See “Fuser service check” on page 2-26.
The paper feed picks and tries to feed media. See “Paper feed service checks” on page 2-28.

Page: 47

2-22 Service Manual
Printer symptom table
Symptom Action
Fan noisy or fan not working. See “Cooling fan service check” on page 2-24.
Fuser parts melted. See “LVPS/HVPS service check” on page 2-26.
Toner not fused to the media. See “Fuser service check” on page 2-26 or “Solving print
quality problems” on page 2-35.
Paper jams. See “Paper feed service checks” on page 2-28.
Main motor noisy or not moving. See “Main motor service check” on page 2-27.
Media skew. See “Paper feed service checks” on page 2-28.
Printer not communicating with host. See “Parallel or USB port service check” on page 2-30.
Front access door will not close. See “Cover interlock switch service check” on page 2-24.
Operator panel button not responding. See “Operator panel service check” on page 2-28.
Operator panel lights are off or very dim. See “Operator panel service check” on page 2-28.
Blank page. See “Blank page” on page 2-31.
Black page. See “Black page” on page 2-32.
Heavy background. See “Heavy background” on page 2-32.
Light print. See “Light print” on page 2-34.
White or black lines or bands. See “White or black lines or bands” on page 2-34.
Toner on back of page. See “Toner on back of page” on page 2-34.
Media never picks. See “Media never picks” on page 2-29.
Media feeds continuously. See “Media occasionally mispicks or picks multiple sheets
at once” on page 2-29.
Media wrinkled or bent. See “Media “trees,” wrinkles, stacks poorly, or curls” on
page 2-30.
Dead machine (no power). See “Dead machine service check” on page 2-25.
Print quality problems
• Light print
• Blurred characters
• Toner on both sides of media
• Toner not fused
• Streaks
• Blank pages
See “Solving print quality problems” on page 2-35.

Page: 48

Diagnostics information 2-23
Service checks
Service checks which involve measuring voltages on the LVPS/HVPS (low voltage power supply/
high voltage power supply board) should be performed with the printer positioned on its back side.
Note: When making voltage readings, always use frame ground unless another ground is
specified. See the wiring diagram in the back of the book for more information.
Controller board service check
Controller board service check
FRU Action
Controller board
assembly
Warning: Do not
replace the operator
panel and controller
board at the same
time. Each card
contains the printer
settings. When either
of these cards is new, it
obtains some of the
settings from the other
card. Settings are lost
when both are new
and replaced at the
same time.
POST (Power-On Self Test)
Note: The printer should complete POST in approximately 30 seconds.
If the printer fails to display lights or activate the drive motor, fuser, or fan, then check the
following order:
1. Power to the LVPS/HVPS
2. Power from the LVPS/HVPS to the controller board
3. Cables are plugged in correctly, especially for the operator panel. The printer will not
power-up without a functioning operator panel.
4. The controller board assembly. The LED adjacent to J12 will be illuminated if the card is
powered and good.
5. The operator panel. See “Operator panel service check” on page 2-28.
Verify +24 V dc input from the LVPS/HVPS.
1. Turn the printer off.
2. Disconnect the LVPS/HVPS cable from the controller board at J502.
3. Turn the printer on.
4. Verify +24 V dc on positions 6, 17, and 19 of the cable connector (LVPS/HVPS).
5. If voltage is correct, then check the continuity in the other conductors of the cable. If the
cable is good, then turn the printer off, and check the connectors to the controller board.
6. Verify that pins 10, 12, 14, 16, and 18 on both the cable and the card connector are
grounded.
7. If grounds are not correct on the cable, but the cable passes continuity otherwise, then
check the LVPS/HVPS.
8. If the grounds are not correct on the controller board, then replace the controller board.
(Check with one probe on the connector pin and the other on the card’s ground plane
found at each screw head.)
Controller board voltage outputs
Turn the printer off, and plug the LVPS/HVPS cable into J502 of the controller board. See
the wiring diagram at the end of the manual which identifies the output voltages and
grounds for a good controller board.
Turn the printer off before plugging or unplugging any connectors.

Page: 49

2-24 Service Manual
Cooling fan service check
Cover interlock switch service check
Note: Make sure a print cartridge assembly is installed and the cover closes all the way, engaging the cover
open switch lever.
LVPS/HVPS Verify main power to controller board
With the printer off, unplug the LPS/HVPS cable at J502 on the controller board. Verify
grounds on pins 10, 12, 14, 16 and 18 for both the cable and the controller board. If any of
these grounds are incorrect, then check the cable for continuity. If the cable fails continuity,
then call the next level of support.
Turn the printer on with the cable still unplugged, and verify the following on the cable
(controller board will not be powered):
If any of the voltages are incorrect, then replace the LVPS/HVPS. See “Dead machine
service check” on page 2-25.
FRU Action
Cooling fan Make sure the fan cable plug is properly seated at J9 (controller board).
Turn the printer on. Within a few seconds, the controller board assembly should apply
+24 V dc to pin 2.
• If voltage is not present, then check or replace the controller board. See “Controller
board removal” on page 4-6.
• If voltage is present then check pin 1 for 24 V dc as well. If it is close to 24 V dc while the
fan is still idle, then replace the fan. See “Fan removal” on page 4-16.
FRU Action
Cover interlock switch Disconnect the cover interlock cable from the controller board at J7.
With the printer turned off:
1. Verify continuity between cable pin 1 and pin 2 with the door closed and discontinuity
with the door open.
2. Verify continuity between cable pin 1 and pin 3 with the door open and discontinuity with
the door closed.
3. Verify discontinuity between cable pins 2 and 3 whether the door is open or closed.
• If any fail, then replace the cover interlock switch.
• If both pass continuity, then turn the printer on, and measure +5 V dc on pin 2 at J7 on
the controller board.
• Verify pin 3 at J7 is ground.
• If voltage or ground is not present, then see “Controller board service check” on
page 2-23 for more information.
Controller board service check (Continued)
FRU Action
Pins Voltage
6, 17, 19 +24 V dc
1, 3-5, 11, 13,
15
+5 V dc

Page: 50

Diagnostics information 2-25
Dead machine service check
CAUTION: Check the AC line voltage. The voltage should be within the following limits:
• 100 V ac (volts alternating current) – 127 V ac for the 110 V printer
• 200 V ac – 240 V ac for the 220 V printer
FRU Action
LVPS/HVPS
Unplug the printer. Remove the LVPS/HVPS, and check the fuses for continuity.
• If open, then replace the LVPS/HVPS.
• If not open, then check the switch continuity across its conductors with the switch on.
Turn the switch off. Plug the AC line into the LVPS/HVPS and switch unit on.
Note: Voltages may be exposed at several places on the board. Do these verifications, and
then unplug the card:
• If voltages are not correct, then replace the LVPS/HVPS.
• If voltages are correct, then check the controller board. See “Controller board service
check” on page 2-23.
Pins Voltage
CN201-6, 17,
19
+24 V dc
CN201-10, 12,
14, 16, 18
Ground
CN201-1,3, 5,
11,13, 15
+5 V dc

Page: 51

2-26 Service Manual
Fuser service check
When toner is partially fused to the media, it is usually caused by low fuser temperature.
The line voltage to the printer must be within the following limits:
• 100 V ac-127 V ac for the 110 V model printer
• 200 V ac-240 V ac for the 220 V model printer
This printer uses a belt fuser and therefore does not have a lamp.
LVPS/HVPS service check
Fuser service check
FRU Action
Fuser power cable
LVPS/HVPS
Fuser
Unplug the printer, and disconnect the fuser cable plug from the LVPS/HVPS board
connector at CN102.
Check for continuity across the fuser by checking across the connector pins.
• If there is continuity, then check the LVPS/HVPS. See “LVPS/HVPS service check” on
page 2-26.
• If there is no continuity, then disconnect the fuser power cable at both ends, and check
each conductor for continuity. Replace cable if necessary.
• If the cable tests good, then replace the fuser.
Reconnect the cables, turn the printer on, and at &12, check for approximately +5 V dc on
pin 1 and ground on pin 2. If line voltage is incorrect on pin 1, then see “Controller board
service check” on page 2-23 for more information.
Fuser
Disconnect the thermistor cable from J12 on the controller board.
Measure the resistance across the ends of the thermistor cable.
Replace the fuser assembly if the resistance is lower than 1K ohm or shorted.
Note: Resistance measures approximately 400K ohms when cool and 1K ohms hot.
FRU Action
LVPS/HVPS
LVPS portion of board
Fuses that open typically indicate a faulty LVPS/HVPS.
Disconnect the power cable, and open the LVPS/HVPS enough to test the switch. The
switch will show continuity across the conductors with a meter when the switch is on. If the
switch is good, then see “Dead machine service check” on page 2-25 for more
diagnostics.
HVPS portion of board
Problems with the HVPS are exhibited in the print quality. See “Print quality service
checks” on page 2-31 for more information.

Page: 52

Diagnostics information 2-27
Main motor service check
FRU Action
Main motor gear drive
Main motor cable
LVPS/HVPS
Controller board
Warning: Do not
replace the operator
panel and controller
board at the same
time. Each card
contains the printer
settings. When either
of these cards is new, it
obtains the settings
from the other card.
Settings are lost when
both are new and
replaced at the same
time.
Turn off the printer, and unplug the main motor cable at J17. Turn on the printer, and check
for the following voltages at J17:
Verify ground at pin 5 for both the card and cable.
• If these voltages are correct, then check the main motor cable for continuity.
- Remove the left side cover to access the connector on the motor.
- If continuity exists on each wire, then replace the main motor gear drive which
includes the motor.
- If continuity does not exist on one or more of the wires, then call the next level of
support.
• If these voltages are not correct, then see “Dell 2350d/dn, 3330dn controller
board connector pin values” on page 5-4, or replace the controller board. See
“Controller board removal” on page 4-6.
J17 pins Voltages
Pins 1-4, 6 Approx. 5 V dc
Pins 7-9 18 V dc–24 V dc

Page: 53

2-28 Service Manual
Operator panel service check
Inspect the operator panel cable for damage. Make sure the cable is plugged in securely. Run POST, and check
each light for proper operation. See “Power–On Self Test (POST) sequence” on page 2-1.
Paper feed service checks
Paper jam error indication during POST
Media picks but stops halfway through the printer
LCD Operator panel service check
FRU Action
Operator panel (LCD)
Controller board
Warning: Do not
replace the operator
panel and controller
board at the same
time. Each card
contains the printer
settings. When either
of these cards is new, it
obtains the settings
from the other card.
Settings are lost when
both are new and
replaced at the same
time.
Lights
If the LCD does not come on, then open the controller board cage and locate the operator
panel connector at J3. Make sure the cable is properly connected to the controller board
and the controller board has input voltage to it.
With the printer on, verify the following without disconnecting the cable:
• Pins 1, 3, 5, and 6: 3.3 v
• Pin 2: 5 v
• Pins 4 and 7: GND
If these are approximately correct and the operator panel is not functioning, then replace
the operator panel.
If any are incorrect, then see “Controller board service check” on page 2-23.
Buttons
If the buttons do not respond, then replace the operator panel. There is no test or repair for
the faulty switches on the operator panel.
FRU Action
Fuser (exit sensor) If the exit sensor flag, which is visible at the back of the fuser, is in any position other than
vertical, then the printer will display a paper jam. Make sure the flag is operating freely.
Replace the fuser if the sensor is damaged.
Input/duplex sensor
Manual feed sensor
Make sure the input paper feed sensors are working properly. A stuck or incorrectly installed
sensor causes a paper jam indication.
FRU Action
Input/duplex sensors
(under print cartridge assembly)
Input sensor (manual)
Make sure the input sensors are working properly.
Check for a broken or stuck flag on the input sensors. Clear anything that keeps
the flags from rotating freely.
Make sure the cables are seated on the controller board at J27 (input/duplex
sensor) and J23 (manual input).
Check for +5 V dc on pin 2 and 5 at J27 (input/duplex sensors) and pin 2 at J23
(Input sensor). Voltages on pins 1 and 4 at J27 pin 1 at J23 should change as the
flags intersect with the sensor.
• If correct, then replace the input paper feed sensor.
• If these voltages are not correct, then replace the controller board.
• Check the pick tires. Clean or replace as necessary.

Page: 54

Diagnostics information 2-29
Media never picks
Media occasionally mispicks or picks multiple sheets at once
Media skews
FRU Action
Paper feed (pick tires) tray 1
Paper feed (pick tires) tray 2
Media drive ASM
Media feed clutch ASM
Manual feed clutch ASM
P/U and manual feed solenoid
ACM drive shaft
Open the left cover, and verify that the solenoids and clutches are functioning
when an attempt is made to feed the media.
Make sure the rubber tires on the ACM are installed and clean.
Replace the tires, ACM drive, clutch assemblies, solenoids, or drive shaft as
necessary.
FRU Action
Tray 1
Tray 2 (option)
Check tray for media catch points.
If the sheet being fed stops momentarily, then the ACM applies additional vertical force,
causing additional sheets to feed.
Do not mix media types in one tray.
Paper pick tires
(Tray 1 or tray 2)
Check the tires in the ACM assembly for signs of wear or damage.
Replace the tires as necessary.
ACM clutch
Manual feed clutch
Media feed clutch ASM
(tray 1 only)
Manual feed clutch
solenoid
Open left cover, and observe the solenoid and clutch actions at the ACM and manual feed
shafts as a print job is attempted.
Replace the faulty part.
Controller board
P/U and manual feed
solenoid ASM.
Disconnect the solenoid cable at J26 on the controller board and measure the resistance
across cable pins 1 and 2.
• The resistance should be approximately 70 ohms.
• If it is not, then replace the solenoid.
• If the resistance is approximately 70 ohms, then check the controller board. Pin 1 at
J26 should be +24 V dc. See “Controller board service check” on page 2-23 for
more information.
Replace controller board as necessary.
FRU Action
Paper feed (pick tires) tray 1
Paper feed (pick tires) tray 2
Tray 1
Tray 2 (option)
Check tires for debris. If tires are new, then try reversing each on its hub.
Check side guides on Tray 1 and Tray 2. Guides set for a full stack of media may be
too wide when the stack is short.

Page: 55

2-30 Service Manual
Media “trees,” wrinkles, stacks poorly, or curls
Parallel or USB port service check
1. Perform a print test to make sure the printer prints correctly. Verify that the indicator light is on, then print
the menu settings by selecting Print Menu under Utilities.
2. Be sure the printer parallel cable is designed for bidirectional printing.
3. Be sure the user’s application is set up correctly.
4. If the internal print test page prints correctly, then the user’s application/printer driver is set up correctly, and
the correct bidirectional parallel cable is installed, but the printer still fails to print on command from the
host computer, replace the controller board.
5. Check the USB cable for continuity.
FRU Action
Fuser This problem is most likely due to a worn backup roll. It causes the printer to run hotter than
required for the media being printed. Excessive heat can cause media treeing problems,
poor stacking, or curl.
Print the menu sheet found under Utilities.
Look at the media settings. Some, such as card stock or rough texture, may require a higher
fuser temperature, which leads to more of these problems (except stacking) in plain paper.
• Change settings using the printer driver.
• Use the local printer setup utility (included on the CD) to change the NVRAM
settings.
Try a different ream of paper. Moist media has a higher tendency to crease (treeing) and
curl.

Page: 56

Diagnostics information 2-31
Print quality service checks
Note: Ensure the cover closes tightly. A gap in the opening may allow light to expose the photoconductor,
resulting in a ‘dirty’ print. Extreme environmental conditions, temperatures, and humidity will affect the print
quality.
Using print quality test pages
To help isolate print quality problems, like streaking, print test pages using the print quality test pages. To print
the print quality test pages:
1. Enter Configuration Menu.
a. Turn off the printer.
b. Turn on the printer while pressing and holding and .
c. Release the buttons when Performing Self Test displays.
d. The message CONFIG MENU displays.
e. Press to Prt Quality Pgs.
f. Press to print the pages.
Four pages print to help evaluate print quality. The first page has various fonts and a graphic, the
second page is gray with graphics, the third page is black, and the last page is blank.
2. Use the test pages to isolate problems such as light or toner streaks. See “POST symptom table” on
page 2-21 for solutions to these problems.
3. Press to Exit Config Menu, and press .
To exit configuration, turn the printer off.
Note: Refer to the print defects guide at the end of the manual for repeating defects.
Blank page
FRU Action
Toner cartridge (not a
FRU)
Remove the toner cartridge, and gently shake it to evenly distribute the toner.
Check for cartridge damage.
Printhead
LVPS/HVPS
Controller board
Blank pages can be caused by a defective printhead assembly,
LVPS/HVPS, or controller board.
• Printhead errors typically result in printer service errors unless there is blockage of the
beam or dust on the lens. Check the lens and opening for blockage.
• Blank pages typically are caused by the PC roll not being properly charged. Try a
different PC kit.
• With the cartridge out, check the spring loaded contacts on the right side for free
motion. None should be ground except for #4 contact from the front.
Unplug the printer, and check the cable continuity between the LVPS/HVPS connector
marked OPC (at CN202) and the corresponding wire form (spring) found about 14 mm
above and to the right of the transfer roll gear.
• If there is not continuity, then call the next level of service.
Try a different toner cartridge and PC kit.
• If those fail, then replace the LVPS/HVPS, controller board, or the printhead in that
order.

Page: 57

2-32 Service Manual
Black page
Note: Incorrect laser exposure or incorrect charging of the photoconductor causes an all black page. Always
verify the same results from a different print cartridge assembly and developer before proceeding.
Heavy background
Poor development or poorly charged toner particles cause excessive background. This is more noticeable as the
toner cartridge nears end-of-life.
FRU Action
Toner electrodes (not a
FRU)
Check the three rearward electrodes below the toner cartridge assembly for contamination,
damage, or a short to ground. Correct as necessary.
Check continuity between the cable (DEV, TAR, and doctor blade) connection PCN3 and on
the contact tips below the toner cartridge assembly.
• If continuity fails, then call the next level of service.
LVPS/HVPS board
Controller board
Miscellaneous cables
With the printer off, disconnect the LVPS/HVPS cable from J502 on the controller board.
Turn the printer on, and verify +24 V dc on pins 17 and 19 of the cable.
Verify +5 V dc on pins 1, 3, 5, 13, and 15.
Verify ground on pins 10, 12,14, 16, and 18.
• If any of the values are incorrect, then replace LVPS/HVPS board.
• If the grounds are incorrect, then check ground paths.
• Check continuity in the cable. If the cable is bad, then call the next level of support.
• If the values are correct and the toner electrodes are good, then replace the controller
board.
• See the “LVPS/HVPS service check” on page 2-26 and the “Controller board
service check” on page 2-23, if necessary.
FRU Action
Toner cartridge (not a
FRU)
Photoconductor kit (not
a FRU)
Check the toner darkness setting in the driver. Try a lower setting.
Make sure the toner cartridge and photoconductor kit are correctly installed and the high
voltage contacts are clean.
If the toner cartridge and photoconductor kit are installed correctly, then try a new
photoconductor kit first and then toner cartridge.
LVPS/HVPS
Controller board
Check the contacts for correct installation and contamination where contact is made
between the print cartridge assembly and spring contacts which connect to the LVPS/HVPS
board at CN203. Clean as necessary.
If this does not correct the problem, then replace the following FRUs one at a time in the
order shown:
• LVPS/HVPS board (See “Black page” on page 2-32 for pin values.)
• Controller board