Lexmark E238, E240, E240n, E340, E342n Service Manual

Lexmark™ E238, E240,

E240n, E340, and E342n

• Table of contents

• Start diagnostics

4511-000
4511-100
4511-410
4511-600
4511-610

• Safety and notices

• Trademarks

•Index

Lexmark and Lexmark with diamond
design are trade ma rks of Lexmark
International, Inc., registered in the
United States and/or ot her countries.

4511-xxx

Edition: September 13, 2005
The following paragraph does not apply to any country where such provisions are

inconsistent with local law: LEXMAR K INTERNATIONAL, INC. PROVIDES THIS

PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, INCLUDING , BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANT ABILITY OR FITNESS FOR A PAR TICULAR PURPOSE. Some states do not
allow disclai mer of express or implied warranties in certain tr ansactions; the refore, thi s
statement may not apply to you.

This publication could include technical inaccuracies or typographical errors. Changes are
periodically made to the information herein; these changes will be incorporated in later
editions. Improvements or changes in the products or the programs described may be
made at any time.

Comments may be addressed to Lexmark International, Inc., Depa rtment D22A/032-2,
740 West New Circle Road, Lexington, Kentucky 40550, U.S.A or e-mail at
[e-mail]. Lexmark may use or distribute any of the
information you supply in any wa y it believes appropriate without incurrin g any obligation
to you. You can purchase additi onal copies of publicat ions related to this product by
calling 1-800-553-9727. In other coun tries, contact y our point of purchase.

References in this publi c ation to produc ts, programs, or services do not imply that the
manufacturer intends to m ake these available in all countries in which it operates. Any
reference to a product, program, or service is no t intended to state or imply that only that
product, program, or service may be used. Any functionally equivalent product, program,
or service that do es not infringe any existing intellectual property right may be used
instea d. E val ua tion and veri fi ca t io n of op er a tio n in conjunction with o the r pr od uc ts,
programs, o r services, except those expressly designated b y the manufacturer, are the
user’s responsibility.

Lexmark, Lexmark with diamond design, MarkNet, and MarkVision are trademarks of
Lexmark International, Inc., registered in the United States and/or ot her countries.

Optra Forms and PictureGrade are trademarks of Lexmark International, I nc.

®

PCL

is a registered trademark of the Hewlett-Pac kard Company.

®

PostScript

is a registered trademar k of Adobe Systems Incorporated.

Other trademarks are the property of their respective owners.

© 2005 Lexmark Inter na tio nal , Inc.
All rights reserved.

UNITED STATES GOVERNMENT RIGHTS

This software and any accompanying documentation provided under this agreement are
commercial compu ter software and documentation developed exclusively at private
expense.

U.S.A. P/N 12G9615

4511-xxx

Table of contents

Laser notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi

Safety information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xvi

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xxi

Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi

General informat ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Maintenance approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Overview of the operator panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Models E238, 240, and 240n. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Models E340 and E342n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Overview of the ope rator panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Print speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Connectivity and compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Media trays and supply capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Types of print media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Tips on preve n t ing ja m s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Diagnostic informati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Diagnostics—E238, E240, and E240n 2 . . . . . . . . . . . . . . . . . . . . . . . 2-2

Power-On Self Test (POST) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Light patterns and error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Common primary light patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Common secondary light patterns. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Secondary errors—paper jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Additional infor m ati on— primary codes . . . . . . . . . . . . . . . . . . . . . . 2-13

Additional infor m ati on— secondary error codes. . . . . . . . . . . . . . . . 2-24

Service codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

Diagnostics—E340 and E342n 50 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50

Power–On Self Test (POST) sequence . . . . . . . . . . . . . . . . . . . . . . . . 2-50

Overview of the operator panel and menus . . . . . . . . . . . . . . . . . . . . . 2-51

Indicator ligh t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51

Buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52

Diagram of the printer menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54

Messages and error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-55

User attendance messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-55

Paper jam messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64

Table of contents

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Service error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-65

Sub error codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-68

Diagnostics—all mode ls 79 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-79

Symptom tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-79

POST symptom table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-79

Printer symptom table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-79

Service checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-81

Cooling fan service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-81

Controller card service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-82

Cover inter lock switch service check. . . . . . . . . . . . . . . . . . . . . . . . .2-85

Dead machine service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-86

Fuser service check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-87

Cold fuse r service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-89

Hot fuser ser vice check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-89

LVPS/HVPS service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-90

Main motor service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-91

Operator panel service check (models E238, E240, and E240n) . . .2-92

Operator panel service check (models E340 and E342n). . . . . . . . .2-93

Paper feed service checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-94

Parallel port ser vice check (models E238, E240, and E240n). . . . . .2-97

Parallel port ser vice check (models E340 and E342) . . . . . . . . . . . .2-97

Print quality service checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-98

Printhead service check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-111

Transfer rol l ser vice check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-111

Diagnostic aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Diagnostic aids—E238, E240, and E240n 2 . . . . . . . . . . . . . . . . . . . . .3-2

Accessing service menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Printing menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

Moving around the menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

Configuration menu selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

Utilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7

Parallel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9

Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

Diagnostics mode selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11

Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11

Parallel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12

Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13

Diagnostic aids—E340 and E342n 14 . . . . . . . . . . . . . . . . . . . . . . . . .3- 14

Accessing service menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14

Printing menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14

Configuration menu (CONFIG MENU) . . . . . . . . . . . . . . . . . . . . . . . . . .3-15

Entering Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15

Available menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15

Reset PC Cnt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-16

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Print quality pages (Prt Quality Pgs) . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Panel Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

PPDS Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Download Emuls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Demo Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Factory Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Energy Conserve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Error log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Paper Prompts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Env Prompts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Exit Config Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Diagnostics mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Available tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

Print te s ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

Hardware tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

Input tr a y tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26

Base sensor test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

Device tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

Printer setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

EP setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31

Error log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32

Exit Diagnostics mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33

Repair information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Handling ESD-sensitive parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Removal procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Controller card removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

Cover open sensor removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Developer drive coupling assembly remova l . . . . . . . . . . . . . . . . . . 4-20

Door latch assembly remo val. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

Exit sensor removal (on the fuser). . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Fan removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26

Front access cover logo removal (E238, E240, and E240n) . . . . . . 4-27

Fuse r re m o v al . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

Fuser idle gear links removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30

Fuser power cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32

Input roller clutch and lever removal (autocompensator clutch). . . . 4-34

Input sensor #1 removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35

Input sensor #2 (manual feed) removal. . . . . . . . . . . . . . . . . . . . . . 4-36

LCD bezel removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37

LCD operator panel removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39

LED operator panel removal (E238, E240, and E240n). . . . . . . . . . 4-40

LVPS/HVPS card assembly removal. . . . . . . . . . . . . . . . . . . . . . . . 4-41

LVPS/HVPS–to–controller card cable removal . . . . . . . . . . . . . . . . 4-43

Manual feed clutch assembly removal. . . . . . . . . . . . . . . . . . . . . . . 4-44

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Paper exit guide assembly removal. . . . . . . . . . . . . . . . . . . . . . . . . .4-46

Paper feed rollers (autocompensat or t ires) removal . . . . . . . . . . . . .4-47

Printhead removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-48

Toner level senso r cable removal (E340 and E342n) . . . . . . . . . . . .4-49

Toner level senso r removal (E340 and E342n). . . . . . . . . . . . . . . . .4-49

Trans fe r ro ll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-50

Transport motor cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-51

Locations and connecti ons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Rear view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Controller card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Controller card connector pin values. . . . . . . . . . . . . . . . . . . . . . . . . .5-4

Preventive maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Parts catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

How to use this parts catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

Assembly 1: Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

Assembly 2: Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4

Asse m b ly 3: Fr ame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6

Assembly 4: Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8

Assembly 5: Miscellaneous. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-9

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1

Part number index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-7

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Laser notices

The following laser notice labels may be affixed to this MFP as shown:

Laser advis o ry label

Laser notices

vi

4511-xxx

Laser no tice

The printer is certified in the U.S. to conform to the requirements of DHHS
21 CFR Subchapter J for Class I (1) laser products, and elsewhere i s
certified as a Class I laser product conforming to the req uir em ents of IEC
60825-1.

Class I laser products are not considered to be hazardous. The printer
contains internally a Class IIIb (3b) laser th at i s nom inally a 5 milliwatt
gallium arsenide laser operating in the wavelength region of 770-795
nanometers . The laser system and printe r are designed so there is never
any human access to laser radiation above a Class I level during normal
operation, user maintenance, or prescribed service condi tion.

Laser

Der Drucker erfül lt gemäß amtlicher Bestäti gung der USA die
Anforderung en der Bestimmung DHHS (Department of Health and Human
Services) 21 CFR Teil J für Laserprodukte der Klasse I (1). In anderen
Ländern gilt der Drucker als Laserprodukt der Klasse I, der die
Anforderungen der IEC (International Electrotechnical Commission) 60825­1 gemäß amtlicher Best ätigung erfüllt.

Laserprodukte der Klass e I ge lten als un schäd lich. Im Inner en des Druck ers
befindet sich ein Laser der Klasse IIIb (3b) , bei dem es sic h um einen
Galliumarsenlaser mit 5 Milliwatt handelt, der Wellen der Länge 770-795
Nanometer ausstr ah lt. Das Lase rsy stem und der Druck er sind so k onz ipiert,
daß im Normalbetrieb, bei der Wartung durch den Benutzer oder bei
ordnungsgemäßer Wartung durch den Kundendienst Laserbestrahlung, die
die Klasse I überstei gen würde, Menschen keinesfalls erreicht.

vii Servic e M a nual

4511-xxx

Avis relatif à l’utilisation de laser

Pour les Etats-Unis : cette imprimante est certifiée conforme aux pro visions
DHHS 21 CFR alinéa J concernant les produits laser de Classe I (1). Pour
les autres p ays: cette im primante répond aux normes IEC 60 825- 1 rel ativ es
aux produits laser de Clas se I.

Les produits laser de Classe I sont considérés comme des produits non
dangereux. Cette imprimant e est équipée d’un laser de Classe IIIb (3b)
(arséniure de galli um d’une puissance nominale de 5 milliwatts) émettant
sur des longueurs d’o nde com pri ses entre 770 et 795 nanomètres.
L’imprimante et son système laser sont conçus pour impossible, dans des
conditions normales d’utilisation, d’entretien par l’utilisateur ou de révision,
l’exposition à des rayonnements laser supérieurs à des rayonnements
de Classe I .

Avvertenze sui prodotti laser

Questa stampante è certificata negli Stati Uniti per essere conforme ai
requisiti del DHHS 21 CFR Sottocapitol o J per i prodott i l aser di classe 1 ed
è certificata negli altri Paesi come prodot to laser di classe 1 conforme ai
requisiti della norma CEI 60825-1.

I prodotti laser di classe non sono consider ati pericolosi. La stampante
contiene al suo interno un laser di classe IIIb (3b) all’ ars eniuro di gallio del la
potenza di 5mW che oper a sulla lunghezza d’onda compresa tra 770 e 795
nanometri. Il sist em a laser e la stampante sono stati progett ati in modo tale
che le persone a contatto con la stampante, durante il normale
funzionamento, le operazioni di servizio o quelle di assistenza tecnica, non
ricevano radiazioni laser superiori al livello della
classe 1.

Laser notices

viii

4511-xxx

Avisos sobre el láser

Se certifica que, en los EE.UU., esta impresor a cumple los requisitos para
los productos l áser de Clase I (1) establecidos en el subcapítu lo J de la
norma CFR 21 del DHHS (Departamento de Sanidad y Servicios) y, en los
demás países, reúne todas las condiciones expuestas en la norma IEC
60825-1 para productos láser de Clase I (1).

Los productos láser de Clase I no se consideran peligrosos. La impresora
contiene en su int erio r un lá ser de Clase IIIb (3b) de arseniuro de galio de
funcionamient o nominal a 5 mi liv ati os en una l ongit ud de o nda de 7 70 a 795
nanómetros. El sistema láser y la impresora están diseñados de forma que
ninguna persona pueda verse afectada por ningún tipo de radiación láser
superior al nivel de la Clase I durante su uso normal, el mantenimiento
realizado por el usuario o cualquier otra si tuación de servicio técnico.

Declaração sobre Laser

A impressora est á certific ada nos E.U.A. em conformidade com os
requisitos da regulamentação DHHS 21 CFR Subcapítulo J para a Classe I
(1) de produtos laser. Em outros locais, está certificada como um produto
laser da Clas se I, em conf ormidade com os requi sitos da norma IEC 60 825-

1.
Os produtos laser da Classe I não são considerados perigosos.

Internamente, a impressora contém um produto laser da Classe IIIb (3b),
designado laser de arseneto de potássio, de 5 milliwatts ,operando numa
faixa de compri m ento de onda entre 770 e 795 nanómetros. O sistema e a
impressora laser foram concebidos de f orma a nunca existir qual quer
possiblidade de acesso humano a radiação laser superior a um nível de
Classe I durante a operação normal, a manutenção feita pelo utili zador ou
condições de assistência prescritas.

ix Service Manual

4511-xxx

Laserinformatie

De printer voldoet aan de eisen die gesteld worden aan een laserprodukt
van klasse I. Voor de Verenigde Staten zijn deze eisen vastgelegd in DHHS
21 CFR Subchapter J, v oor andere landen in IEC 60825- 1.

Laserprodukten van kl asse I worden niet als ongevaarli jk aangemerkt. De
printer is voorzien van een laser v an klasse IIIb (3b), dat wi l zeggen een
gallium arsenide-laser van 5 milliwatt met een golflengte van 770-795
nanometer. Het lasergedeelte en de printer zijn zo ontworpen dat bij
normaal gebruik, bij onderho ud of re paratie conform de voorschriften, nooit
blootstelling mogelijk is aan laserstraling boven een niveau zoals
voorgeschreven is voor klasse 1.

Lasermeddelelse

Printeren er godkendt som et Klasse I-laserprodu kt, i overe nstemmels e med
kravene i IEC 60825-1.

Klasse I-laserprodukt er bet ragtes ikke som farlige. Printeren indeholder
internt en Klasse IIIB (3b)- laser, de r nomine lt er en 5 m il liwa tt ga lli umarseni d
laser, som arbej der på bølgelængdeområdet 770-795 nanometer.
Lasersysteme t og printeren er udformet således, at mennesk er aldrig
udsættes for en laserstråling over Klasse I-niveau ved normal drift,
brugervedligeholdelse eller obligatoriske servicebetingelser.

Laser notices

x

4511-xxx

Huomautu s las er laitteesta

Tämä kirjoitin on Yhdysvalloissa luokan I (1) laserlaitteiden DHHS 21 CFR
Subchapter J -määrit ykse n mukainen ja muu alla l uoka n I laserlai tteiden I EC
60825-1 -määrityksen mukainen.

Luokan I laserlaitteiden ei katsota olevan vaarallisia käyttäjälle.
Kirjoittimessa on sisäinen luokan IIIb (3b) 5 milliwatin galliumarsenidilaser,
joka toimii aaltoalueella 770 - 795 nan ometri ä. Laserjärjest elmä ja kirjoitin
on suunnitelt u siten, että käyttä jä ei altistu luokan I määri tyksiä
voimak kaam m alle säteilylle kirjoittimen normaalin toiminnan, käy tt äjän
tekemien huoltotoimien tai m uiden huoltotoimi en yhteydessä.

VARO! Avatta essa ja suojalukitus ohitett aessa olet altti ina näkymättömäl le
lasersäteilylle. Älä katso säteeseen.

VARNING! Osynlig laserstrålning när denna del är öppnad och spärren är
urkopplad. Betrakta ej strålen.

Laser-notis

Denna skrivare är i USA certifierad att motsvara kra ven i DHHS 21 CFR,
underparagraf J för laserprodukter av Klass I (1). I andra länder uppfyller
skrivaren kraven för laserprodukter av Klass I enligt kraven i IEC 60825-1.

Laserprodukter i Klass I anses ej hälsovådliga. Skrivaren har en inbyggd
laser av Klass IIIb (3b) som består av en laser enhet av gallium-arseni d på 5
milliwatt som arbetar i våglängds om rådet 770-795 nanometer.
Lasersystem et och skrivaren är ut formade så att det aldrig finns risk för att
någon person utsätts för laserstrål ning över Klass I-nivå vid normal
användning, underhåll som utför s av användaren eller annan föreskriv en
serviceåtgärd.

xi Service Manual

4511-xxx

Laser-melding

Skriveren er godkjen t i USA etter kravene i DHHS 21 CFR, underkapitt el J,
for klasse I (1) laserprodukter, og er i andre land godkjent som et Klasse I­laserprodukt i samsvar med krave ne i IEC 60825-1.

Klasse I-laserprodukter er ikke å betrakte som farlige. Skriveren inn eholder
inter n t e n k la ss e III b (3 b )- la s e r, som be s tå r av en g a lliu m-arsen la se r e nh e t
som avgir stråling i bølgelengdeområdet 770-795 nanometer.
Lasersysteme t og skriveren er utformet slik at personer aldri utsettes for
laserstråling ut over klasse I-nivå under vanlig bruk, vedlikehold som ut føres
av brukeren, el ler foreskrevne serviceoperasjoner.

Avís sobre el Làser

Segons ha e stat certificat als Estats Units, aquesta im pressora c omp leix els
requisits de DHHS 21 CFR, apartat J, pels productes làser de classe I (1), i
segons ha estat certificat en altres llocs, és un producte làser de classe I
que compleix els requisi ts d’IEC 60825-1.

Els productes làser de classe I no es consideren perillosos. Aquesta
impressora conté un làser de classe IIIb (3b) d’arseniür de gal.l i,
nominalment de 5 mil.li w ats, i funciona a la regió de longitud d’ona de 770­795 nanòmetres. El si stema làser i la impress ora han sigut conceb uts de
manera que mai hi hagi expo sici ó a la radiac ió làser per sobre d’un nivell de
classe I durant una operació normal, durant les tasques de manteniment
d’usuari ni durant el s serveis que satisfacin les condicions prescrites.

Lase r notic es

xii

4511-xxx

Japanese Laser Notice

Chinese Laser Notice

xiii Service Manual

4511-xxx

Ko rean Laser Notice

Laser notices

xiv

4511-xxx

xv Servic e M a nual

4511-xxx

Safety information

• The safety of this product is based on testing and approvals of the

original design and specific components. The manufacturer is not
responsibl e for safety in t he event of use of unauthorized replac ement
parts.

• The maintenance informati on for this produc t has been prepared for

use by a p rofessional service person and is not inten ded to be used by
others.

• There may be an increased risk of electric shock and personal injury

during disassembly and servicing of this product. Professional service
personnel should understand this and take necessary precautions.

• CAUTION: When you see this symbol, th ere is a danger

from hazardous voltage in the area of the product where
you are working. Unplug the product bef ore you begin, or
use caution if the product must receive power in order t o
perform the task.

Consig nes de sécurité

• La sécurité de ce produit repose sur des tests et des

agréations portant sur sa conception d'origine et sur des composants
particuliers. Le fabricant n'assume aucune responsabilité concernant
la sécurité en cas d'utilisation de pièces de rechange non agréées.

• Les consignes d'entretien et de réparation de ce pro duit s'adressent

uniquement à un personnel de ma intenance qualifié.

• Le démontage et l'entretien de ce pr oduit pouvant présenter certains

risques électriques , le personnel d'entretien qualifié devra prendre
toutes les précautions nécessaires.

• ATTENTION : Ce symbole indique la présence

d'une tension dangereuse dans la partie du produit sur
laquelle v ous trav ail lez. Débranchez le produit avant de
commencer ou f aites preuve de vigi lance si l'exécution de
la tâche ex ige que le produit reste sous tension.

Sa fety informat ion xvi

4511-xxx

Norme di sicurezza

• La sicurezza del prodotto si basa sui test e sull'approvazione del

progetto originale e dei componenti specifici. Il produttore non è
responsabile per la sicurezza in caso di sost ituzione non autoriz zata
delle parti.

• Le informazioni riguardanti la manutenzione di questo prodotto sono

indirizzate soltanto al personale di assistenza autorizzato.

• Durante lo smont aggio e la manutenzione di questo prodotto,

il rischio di subir e sc osse el ettri che e dan ni alla persona è pi ù elevato. Il
personale di assistenza autorizzato deve, quindi, adottare le
precauzioni neces sarie.

• ATTENZIONE: Questo simbol o indica la presenza

di t ensione pericolosa nell'area del prodotto. Scollegare il
prodotto prima di iniziare o usar e cautela se il prodotto de ve
essere alimentat o per eseguire l'interv ento.

Sicherheitshinweise

• Die Sicherheit dieses Produkts basiert auf Tests und Zulassungen des

ursprünglich en Mod ells und bestimmter Baut eile. Bei Verwendung
nicht genehmigter Ersatzteile wir d vom Hersteller keine Verantwortung
oder Haftung für die Sicherheit übernommen.

• Die Wartungsinformationen für die ses Produkt sind ausschli eßlich für

die Verwendung durch ei nen Wartungsfac hm ann bestimmt.

• Während des Auseinandernehmens und der Wartung des Geräts

besteht ein zusätz li ches Risiko eines elektrischen Schlags und
körperlicher Verletzung. Das zuständige F achpersonal sollt e
entsprechende Vorsichtsmaßnahmen treffen.

• ACHTUNG: Dieses Symbol weist auf eine gefährliche

elektrische Spannung hin, die in diesem Bereich des
Produkts auftreten kann. Ziehen Sie vor den Arbeiten am
Gerät den Netzstec ker des Geräts, bzw. arbeiten Sie mit
großer Vorsicht, wenn das Produkt für die Ausführung der
Arbeiten an den Strom angeschlossen sein muß.

xvii Service Manual

4511-xxx

Pautas de Seguridad

• La seguridad de este producto se basa en pruebas y aprobacion es del

diseño original y componentes específicos. El fabricante no es
responsable de la seguridad en caso de uso de piez as de repuesto no
autorizadas.

• La información sobre el manten imiento de este producto está dirigida

exclusivamente al personal cualific ado de mantenimiento.

• Existe mayor riesgo de des carga eléctrica y de daños pers onales

durante el desmontaje y la reparación de la máquina. El personal
cualificado debe ser consciente de este peligro y tomar las
precauciones necesarias.

• PRECAUCIÓN: est e símbolo indica que el voltaje de la

parte del equipo con la que está trabajando es peligroso.
Antes de empezar, desenchuf e el equipo o tenga cuidado
si, para trabajar con él, debe conectarlo.

Informações de Segurança

• A segurança deste produto basei a-se em testes e aprov ações do

modelo original e de compon entes específicos. O fabricante não é
responsável pela segunrança, no caso de uso de peças de
substituição não autorizadas.

• As informações de segurança relativas a este produto destinam-se a

profissio nais destes serviços e não devem ser utiliz adas por outras
pessoas.

• Risco de choques eléctricos e feri m entos grav es durante a

desmontagem e manutenção deste produto. Os profissionais destes
serviços devem estar avisados deste facto e tomar os cuidados
necessários.

• CUIDADO: Quando vir este símbolo, exi ste a possível

presença de uma potencial tensão perigosa na zona do
produto em que está a trabalhar. Antes de começar,
desligue o produto da tomada eléctrica ou seja cuidadoso
caso o produto tenha de est ar l igado à corrente eléct rica
para realiz ar a tar efa necessária.

Safety information xviii

4511-xxx

Informació de Seguretat

• La seguretat d'aquest producte es basa en l'avaluació i aprovació del

disseny origin al i els components específics.
El fabricant no es fa responsable de les qüestions de
seguretat si s'uti litzen peces de recanvi no autoritz ades.

• La informació pel manteniment d’aquest producte està orientada

exclusivament a prof essionals i no està destinada
a ningú que no ho sigui.

• El risc de xoc elèctric i de dan ys personals pot augmentar durant el

procés de desmuntatge i de servei d’aquest product e. El personal
professional ha d’estar-ne assabentat i prendre
les m e s ures conve nient s.

• PRECAUCIÓ: aquest símbol indica que el voltatge de la

part de l'equip amb la qual esteu treballant és perillós.
Abans de començar , desendolleu l' equip o extremeu les
precaucions si, per treballar amb l'equip, l'heu de
connectar.

xix Service Manual

4511-xxx

Safety information xx

4511-xxx

Preface

This manual contains maintenance proc edures for service per sonnel. It is
divided into the following chapters:

1. General informatio n contains a general description of the MFP and
the maintenance approach used to repair it. Special tools and test
equipment are listed, as well as general environmental and safety
instructions.

2. Diagnostic information cont ains an error indicator t able, symptom
tables, and service checks used to isolate failin g field replaceable units
(FRUs).

3. Diagnostic aids contains tests and checks used to locate or re peat
symptoms of MFP problems.

4. Repair information provi des in struct ions f or maki ng MFP adj ustm ents
and removing and inst alling FRUs.

5. Connector locations uses illustr a ti ons to identify the co nnector
locations and test points on the printer.

6. Preventive maintenance contains the lubricati on specificati ons and
recommendations to prevent problems.

7. Parts catalog contains illustrations and part numbers for individual
FRUs.

Definitions

Note: A note provid es additional information.
Warning: A warning identifies something that might damage the product

hardware or software.
CAUTION: A caution identifies something that might cause a servicer

harm.

CAUTION: When you see this sy mbol, the re 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 tas k.

xxi Service Manual

4511-xxx

1. Gen e r a l informa tion

The Lexmark™ E238, E240, E240n, E340, and E342n printers are
monochrome laser printe rs designed for single users or small workgroups.

Models

There are five models:

• E238—16MB memory standard, a USB (universal serial b us) port, a

parallel port, and prints 25 pages per minute on letter-size paper
(24 ppm on A4).

Note: The optional 550-sheet tray is not supported.

• E240—16MB of memory standard, a parallel port, a USB port, and

prints 27 ppm on letter-size paper (26 ppm on A4).

• E240n—32MB of memory standard, an integrated Ethernet adapter, a

parallel port, a USB port, and prints 27 pm on let ter- size paper (2 6 ppm
on A4).

• E340, 32MB of memory standard, a parallel port, a USB port, and

prints 30 ppm on letter-size paper (28 ppm on A4).

• E342n, 32MB of memory standard, an integrated Ethernet adapt er, a

parallel port, a USB port, and prints 30 ppm on letter-size paper
(28 ppm on A4).

Maint en an ce ap proa ch

The diagnostic information in this manual leads you to the correct field
replaceabl e unit (FRU) or part. Use the error code charts , symptom index,
and service checks to determine the sym ptom and repair the fa il ure. See

“Diagnostic information” on page 2-1 for more information. See “Repair
information ” on page 4-1 to help identify parts. Af ter compl etin g the repa ir,

perform tests as needed to verify the repai r.

General information 1-1

4511-xxx

Overview of the operator panels

There are two available operator panels.

Models E238, 240, and 240n

These models ha ve six lights and two buttons. See “Diagnostics—E238,

E240, and E240n” on page 2-2 f o r m o re inf o rmation.

Continue

(also a light)

Cancel

Ready

Toner Low /

Replace PC Kit

Load Paper

Paper Jam

Error

• Press and hold until lights flash to print the setting sheet .

• Pr ess and release to resume printing.

• Pr ess and release twice quickly to di splay a secondary erro r code

following an error.

• Pr ess and release to cancel the job currently printing.

• Pr ess and hold until all of the lights come on to reset the printer .

1-2 Service Manual

4511-xxx

Models E340 and E342n

These models hav e LCD operator panel. See page “Diagnostics—E340

and E342n” on page 2-50.

Overview of the operator panel

• Press Go to resume pr i n tin g .

• Press Menu to move forward and backward through the men u

selections.

• Press Return to go one lev el back in the men u.

• Press Select to indica te the menu or selection you choose.

• Press Stop to cancel the job currently printing.

• Light indicates Busy (flashing) or Ready (on steadily).

General information 1-3

4511-xxx

Specifications

Memory

4511-000

Item

Base
memory

Maximum
memory

Flash support ✔✔

Lexmark
E238

16MB 16MB 32MB 32MB 32MB

80MB 80MB 160MB 160MB 160MB

4511-100
Lexmark
E240

4511-410
Lexmark
E240n

4511-600
Lexmark
E340

4511-610
Lexmark
E342n

Print spee d

4511-000

Media Size

Letter—8.5 x
11 in.

A4—210 x
297 mm

Speed measured on media from tray 1, simplex, and at 600 x 600 dpi.

Lexmark
E238

25 ppm 27 ppm 27 ppm 30 ppm 30 ppm

24 ppm 26 ppm 26 ppm 28 ppm 28 ppm

4511-100
Lexmark
E240

4511-410
Lexmark
E240n

4511-600
Lexmark
E340

4511-610
Lexmark
E342n

1-4 Service Manual

4511-xxx

Connectivity and compatibility

4511-610
Lexmark
E342n

Item

4511-000
Lexmark
E238

4511-100
Lexmark
E240

4511-410
Lexmark
E240n

4511-600
Lexmark
E340

Data stream emulations

PCL 6 ✔✔✔✔✔
Post Script 3 Mac OS

only

Mac OS

only

✔✔✔

PPDS ✔✔
Compatibility Windows/Macintosh/Linux*

Connectivity

a

USB

✔✔✔✔✔

b

Parallel
Ethernet

✔✔✔✔✔

c

✔✔
ENA option ✔✔✔✔✔
* Linux support for E238/E240/E240n models utilizing t he PCL data stream.
Wireless

a

d

✔✔✔✔✔

These products are USB 2.0 Certified and sup port full-speed (12MB/sec)
data transfer. They are also compatible with Hi-Speed USB syst em s,
peripherals, and cables.

b

IEEE 1284 Bi-directional.

c

10/100 BaseTx Ethernet.

d

802.11g wireless print adapter.

General information 1-5

4511-xxx

Medi a trays and su pply capacity

4511-000

Item

Available input trays

250-sheet
tray

Single-sheet
manual
feeder

550-sheet
option drawer

T oner and photoconductor

Toner
cartridge
yield

PC kit yield 30,000 pages*
*Photoconductor yield based on approximately 5% coverage of pages.

Lexmark
E238

✔✔✔✔✔

✔✔✔✔✔

1,500 pages* (starter toner cartridge) 2,500

4511-100
Lexmark
E240

✔✔✔✔

4511-410
Lexmark
E240n

4511-600
Lexmark
E340

4511-610
Lexmark
E342n

pages

1-6 Service Manual

4511-xxx

Types of print media

Ensure trays are properly loaded. Never mix media types within a tray.

Input

Source Sizes Types Weight

capacity
(sheets)

Tr ay 1
(250-sheet

tray)

A4, A5,
JIS B5,
letter, legal,
executive,

Plain paper,
transparencies,
paper labels

b

60–90 g/m
(16–24 lb)

2

250 paper,
50 labelsb,
50 transpar­encies

folio,

Tr ay 2
(550-sheet

— E240(n)/
E340/
E340n only)

Manual
feeder

statement,
Universal

A4, A5,
JIS B5,
letter, legal,
executive,
folio,
statement,
Universal

A4, A5,
JIS B5,
letter, legal,
executive,

a

Plain paper,
transparencies,
paper labels

a

Plain paper,
transparencies,
paper labels
card s to ck

2

550 paper,
50 labelsb,
50 transpar-

b

60–163 g/m
(16–43 lb)

encies,
card s to ck

60–163 g/m
(16–43 lb)

b

,

c

2

1 sheet

folio,
statement,
Universal

7¾, 9, 10,
DL, C5, B5,
other

a

Universal size range: 76–216x 127–356 mm (3.0–8.5 x 5.0–14.0 in.)

a

Envelopes

d

(includes 3 x 5 in. cards).

b

Dual web, integrated, or vinyl labels are not supported.

c

Card stock up to 90# Index. Gra in short is recommended.

d

Maximum and minimum sizes f o r ot her envelopes are 98.4 x 162 mm to
176 x 250 mm (3.87 x 6.38 in. to 6.93 x 9.84 in.

c

General information 1-7

4511-xxx

Tips on preventing jams

You can avoid most paper jams by correctly loading paper and specialty
media.

The following hints can help you avoid paper jams:

• Do not load wrinkled, creased, or damp paper.

• Never mix media types within a tray.

• Fl ex, fan, and straighten paper before you load it.

• Do not exceed the maximum stack hei ght.

• Push all trays firmly into the printer after loading them.

• Make sure the gui des in the trays are positioned snugly against the

paper or specialty me dia.

• Do not remove paper trays whi le a job is printing. Wait for a Load

Paper or Ready light sequence or message before you remove the

tray.

• Before loading transparencies, fan the stack to prevent sheets from

sticking together.

• Do not use envelopes that:

– Have excessive curl
– Are st uck together
– Are damaged in any way
– Contain windows, holes, perforations, cuto uts, or embossing
– Have metal clasps, string ties, or metal folding bars
– Have postage stamps attached
– Have any exposed adhesive when the flap is in the sealed positi on

• Use only recommended paper. Refer to the Card Stock & Label Guide

available on the Lexmark Web site at www .lexmark.com for more
information about whi ch paper pro vides opt im um result s for the curren t
printing environment.

Tools

The remov al and adjustment procedur es require the following tools and
equipment:

• M agnetic tip Phillips screwdrivers, large and small

• Volt-ohmmeter

1-8 Service Manual

4511-xxx

Acronyms

ACM Auto compensator Mechanism (or paper feed)
ASIC Application Specific Integrated Circuit
CBM Complete Bill Of Material
CRC Cyclic Redundancy Check
DEV Development Roll (of print cartridge/photoconductor

DIMM Dual In-Line Memory Module
ECC Error Correction Code
EEPROM Erasable Electrically Programmable Read-Only

ENA External Network Adapter
FRU Field Replace able Unit
HBP Host Based Printing
HVPS High Voltage Power Supply
LCD Liquid Crystal Diode
LED Light Emitting Diode
LVPS Low Voltage Power Supply
NVRAM Nonvolatile Random Access Memory
PC Photoconductor
PCL Printer Control Language
POR Power-On Re se t
POST Power-On Self Test
PPDS Personal Printer Data Stream
PRC Peoples' Republic of China
PSO Participating St andards Organization
RIP Raster Image Proces sor
TAR Toner Add Roll
SDR Synchronous Dynamic RAM
USB Universal Serial Bus
V ac Volts alternating current
V dc Volts di rect current

system)

Memory

General information 1-9

4511-xxx

1-10 Service Manual

4511-xxx

2. Diagnostic information

Start

CAUTION: Unplu g 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.

This chapter contains the codes and diagnostic tools to aid in providing
correctiv e action for a malfunctioning printer. To determin e the corrective
action to repair a printer, look for the following information:

• A description of a problem, see “Symptom tables” on page 2-79.

• Information from the operator panel of the printer.

– Models E238, E 240, and E240n h a v e an oper at or pane l cont ai ning

lights and but tons. For diagnostic inf orm ati on specific to these
modes, see “Diagnostic s—E238, E240, and E240n” on

page 2-2.

– Models E340 and E342n have an operator panel with messages.

For diagnostic informati on specific to these model s, see

“Diagnostics—E340 and E342n” on page 2-50.

Diagnostic information

2-1

4511-xxx

Diagnostics—E238, E240, and E240n 2

Po wer-On Self Test (POST) sequence

When you turn the printer on, it per forms a POST. Check for correct POST
functioni ng of t he base printer by observing the following process:

1. All operator panel lights on momentarily

2. Lights then flash on and off sequentially.

3. After the lights quit f lashing, the light flashes unt il the fuser comes
up to temperature (5–20 additional seconds , depending on the initial
temperature of the fuser) and then stays on.

4. If there is a problem in the printer such as a paper jam, the panel ligh ts
indicate the probl em . See “Common primary light patterns” on

page 2-4 for more information.

5. The printer cycles down into standby mode , and lights solid.

2-2 Service Manual

4511-xxx

Light patterns and error messages

User attendance messages, paper jam error s, and service errors display a
light pattern. This may be all the information you need. However, if you
double-click
detailed inf ormation. If you doub le- clic k
the first pattern. Not all ini tial level light patterns have secondary patterns;
when you double-click, the patt ern does not change.

All service errors are indicated by all lights flashing as the primary
notification or code . The second ary code indic ates an area or fun ction which
has the error. Additional tertiary codes used for service (see “Service

tertiary error codes” on page 2-40) indicate specific errors. See “Service
codes” on page 2-36.

on the panel, a second pattern may appear with more

a third time, you usually return to

'RXEOH
&OLFN

3ULPDU\

&RGHV

Note: If you send data t o the pri nter and all lights flash immediately, and

double-clicking does not cha nge the display, there may be a code
problem. Contact the next level of support.

Diagnostics—E238, E240, and E240n

6HFRQGDU\

&RGHV

2-3

4511-xxx

Common primary light patterns

See “Overview of the operator panels” on page 1-2 for icon information.

z Light on

Light off

✷ Light blinking

x Light blinking slowly

Primary light patterns

Lights

Continue

Ready

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

Error

Ready/Power Saver

(See page 2-13)

Busy

(See page 2-14)

2xx Paper Jam (see

secondary errors

on page 2-24

Hex Trace Ready

(See page 2-15)

Waiting

(See page 2-15)

zz

z ✷ x z ✷

z

Flushing / Resolution

reduced

(See page 2-16)

✷

2-4 Service Manual

4511-xxx

Primary light patterns (continued)

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

Load manual feeder

Not ready

(printer offline)

Load media

Close door / Insert

cartridge

(See page 2-16)

(See page 2-17)

(See page 2-17)

(See page 2-18)

zzz✷

z ✷ z

z

Toner low

Print side two

of duplex job

(See page 2-18)

(See page 2-19)

z

Diagnostics—E238, E240, and E240n

2-5

4511-xxx

Primary light pattern s (cont inued)

Lights

Continue

Ready

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

Error

Cancel job /

Reset pr inter

Replace

Programming engine

code / Programming

system code

Invali d engine code /

Invali d network code

Cartridge errors

Replace

photoconductor kit

photoconductor kit

(See page 2-19)

(printer hard stop)

(See page 2-28)

(See page 2-20)

(See page 2-21)

(See page 2-21)

(See page 2-22)

zz z

zzz

✷✷zzz

zz

z

✷ zz z

2-6 Service Manual

4511-xxx

Primary light patterns (continued)

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

Service error (see

Service secondary

codes on page 2-38

or Service tertiary

codes on

Prin ter error (see

“Secondary error

codes” on page 2-24.)

page 2-40.)

✷✷

✷

✷

✷

✷

z ✷

Diagnostics—E238, E240, and E240n

2-7

4511-xxx

Common secondary light patterns

When the and lights are both on, a secondary error has occurred.
Press and release twice quickly to display the secondary error code
light pattern. The following table shows what these light patterns mean.

Secondary error code s

Secondary error codes

Primary

Lights

Continue

Ready

code

Standard network

software err or

manual feeder

(See page 2-32)

Unsupported

flash in slot

Too many options

attached

Complex pag e

(See page 2-27)

Insufficient printer

memory

zzzzzz

z ✷

zz

(See page 2-29)

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

zzzzzz

Error

2-8 Service Manual

zz

zz

4511-xxx

Secondary errors (continued)

Secondary codes

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

Insufficient

collation area

(See page 2-30)

PPDS font error

(See page 2-30)

Defective flash

(See page 2-31)

Insufficient defrag

memory

(See page 2-31)

Networ k in te r fac e

errors

(See page 2-32)

ENA connection

lost

(See page 2-32)

zzzzzz

z ✷

z ✷

z ✷

zzzzzz

Diagnostics—E238, E240, and E240n

2-9

4511-xxx

Secondary error s (continued)

Secondary error codes

Lights

Continue

Ready

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

Error

Memory full

(See page 2-33)

Short paper

(See page 2-33)

Unformatted flash

(See page 2-34)

Flash full

(See page 2-34)

Invalid engine code

(See page 2-35)

Invalid network

code

(See page 2-35)

zzzz

zz zzz

zz

zz✷

zz

zzzzzz

2-10 Service Manual

4511-xxx

Secondary errors (continued)

Secondary error codes

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

Print cartridge

mismatch

(See page 2-28)

Print cartridge has

invalid refill

(See page 2-28)

Missing or defective

print cartridge

(See page 2-28)

Unsupported

print cartridge

(See page 2-29)

zzzz

zz z

zz

z

zz

zzzz

Diagnostics —E238 , E240, and E240n

2-11

4511-xxx

Secondary errors—paper jams

Secondary errors—paper jams

Secondary error codes

Lights

Continue

Ready

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

Error

251 Paper jam

manual feeder

200 Paper jam input

242 Paper Jam

Tr ay 2 jam

241 Paper jam

Tr ay 1 jam

202 Paper jam exit

sensor

201 Paper jam

between input and

exit sensors

sensor

(See page 2-24)

(See page 2-25)

(See page 2-25)

(See page 2-26)

(See page 2-26)

(See page 2-27)

zzzzzz

zz✷

zz

zzz

zzzzzz

2-12 Service Manual

4511-xxx

Additional information—primary codes

The following tables explain the primary light patterns, or codes, and
secondary error codes , what they mean and how to clear them. User
attendance and stat us information is i ncluded. For se rvice information, see

“Service codes” on page 2-36.

Ready / Power Saver

Light pattern Meaning Action

• Printer ready to
receive and pro cess
data.

• Pri nt e r is in Power
Saver mode.

• Send a print job.

• Press to print the
menu settings pages for a
list of curre nt printer
settings.

• Press and hold to
reset the printer.

Note: To change the P ower
Saver setting, use the Local
Printer Setup Utility. See the
User’s Reference for more
information.

Diagnostics —E238 , E240, and E240n

2-13

4511-xxx

Busy

Light pattern Meaning Action

• Printer is busy
receiving and
processing data or
printing.

• Printer is
defragmenti ng the
flash memory to
reclaim storage
space occupied by
deleted resour ces.

• Printer is formatti ng
the flash memory.

• Printer is storing
resources, such as
fonts or macros, in
flash memory.

• Printer is printing a
directory, font list,
menu sett ings page s,
or Print Quality Test
Pages.

• Busy:
– Wait for message to

clear.

– Press and release

to cancel print job.

– Press and hold to

reset printer.

• Defragmenti ng flash,

formatti ng fl ash, or
programm ing flas h:

– Wait for message to

clear.

– Warning: Do not turn

the printer off while this
message is displayed.

• Printing a directory, a font

list, menu settings pages,
or Print Quality Test Pages:

– Wait for the pages to

print. The Busy
message is displ ay ed as
the pages print. The

light is on when

printing stops.

– Press and release

to cancel printing.

– Press and hold to

reset printer.

• Receiving/ processi ng data

from a host interface:

– Wait for message to

clear.

– Press and release

to stop processing.

– Press and hold to

reset printer.

2-14 Service Manual

4511-xxx

Hex Trace Ready

Light pattern Meaning Action

Printe r is in the Ready
mode and Hex Trace is
active.

• Hex Trace helps

• Or, press and hold to

Waiting

Light pattern Meaning Action

Printer is waiting until a
print timeout occurs, or
until it receives
additional data.

• Press and release to

• Press and release to

• Press and hold to

troubleshoot printing
problems. After resolving
the problem, turn off the
printer to exit Hex Trace.

reset the printer.

print contents of the print
buffer.

cancel the print job.

reset the printer.

Diagnostics —E238 , E240, and E240n

2-15

4511-xxx

Flushing / Resolution reduced

Light pattern Meaning Action

• Printer is flushing
corrupted print data.

• Printer is processi ng
data or printing
pages, but the
resolution of a page
in the cur rent print j ob
is reduced from
600 dots per inch
(dpi) to 300 dpi to
prevent a memory full
error.

• Wait unt il is on to print

• Press and release to

• Press and hold to

Not ready

Light pattern Meaning Action

Printer is not ready to
receive o r pro cess data,
or the printer ports are
offline.

• Pres s to retur n to

• Press and release to

• Press and hold to

other jobs.

cancel print job.

rese t p rinter.

Ready or Busy state.

cancel print job.
rese t p rinter.

2-16 Service Manual

4511-xxx

Close door / Ins ert cartr idge

Light pattern Meaning Action

The printer door is
open.

Close the door.

Load media

Light pattern Meaning Action

The printer is out of
media, or the media did
not feed properly,
thereby not making the
input sensor in the
allotted time.

• Load media into tray 1 or

• Check that the media is

• Press to cancel the

the optional
550-sheet tray, and press

to resume printing.

loaded correct ly in tra y 1 or
the optional 550-sheet tray.

print job.

Diagnostics —E238 , E240, and E240n

2-17

4511-xxx

Load manua l fee de r

Light pattern Meaning Action

Printer prompts to load
a single sheet of media
in the manual fe eder.

• Load media in the manual

•Press to resume

• Press and hold to

Print side two of duplex job

Light pattern Meaning Action

Pri nt the o ther si de of
duplex print job.

• Reinsert print job in tray1

•Press to resume

• Press and hold to

feeder with the side to be
printed f acing up.

printing.
rese t p rinter.

using the inst ructions in
the driver pop-up menu to
orient the pages correctly
(printed side up, loading
edge to front of the
printer).

printing.

rese t p rinter.

2-18 Service Manual

4511-xxx

Toner low

Light pattern Meaning Action

The toner in the print
cartridge is getting low.

• Send a print job.

• Press to print the
menu settings page for a
list of current set tings.

• Remove the print
cartridge, and shake it to
extend the life of the
cartridge.

• Replace the print
cartridge.

• Press and hold to
reset p r in te r.

Note: The light may
not come on if the starter
print cartridge is inst alled i n a
base model.

Replace photoconductor kit (an early warning)

Light pattern Meaning Action

The photoconductor kit
drum is full and needs
replacing.

• Press to resume
printing.

• Replace the
photoconductor kit.

Diagnostics —E238 , E240, and E240n

2-19

4511-xxx

Replace photoconductor kit (printer hard stop)

Light pattern Meaning Action

The photoconductor kit
drum is full and needs
replacing. No pages
print until the
photoconductor ki t is
replaced.

Replace the photoconductor
kit.

Print cartri dge error / Print cartridge is not installed

Light pattern Meaning Action

The print cartridge is
not installed, or the
printer detects a print
cartridge error.

The error is caused by a
defective cartridge, an
unsupported cartridge,
an invali d ref ill, or a
cartr i dge me ant to be
used in another
geographic region.

• If the print cartridge is not
installed , in s ta ll it.

• If the print cartridge is
installed, remove it and
install a new prin t
cartridge.

See secondary codes “Print

cartridge errors” on
page 2-28.

2-20 Service Manual

4511-xxx

Invalid engine code / Invalid network code

Light pattern Meaning Action

The code in an internal
print server has not
been programmed, or
the programmed code is
not valid .

• Download valid network
code to the internal print
server.

• Press twice quic kly to
see the secondary error
code.

Programming engine code / Programming syste m code

Light pattern Meaning Action

New code is being
loaded into the engine
or firmware code flash.

Wait for th e message to clear.
When the printer has finished
loading the code, it performs
a soft reset.

Diagnostics —E238 , E240, and E240n

2-21

4511-xxx

Cancel job / Reset printer

Light pattern Meaning Action

• The cu rren t prin t j o b
is canceled.

• The prin ter is
resetti n g to th e u ser
default settings.

–Any act ive prin t

jobs are canceled.

–A user default

setting remain s in
effect unt il ch anged
or until restored to
factory def ault
settings.

Wait for the message to clear.

Service error

Light pattern Meaning Action

The printer has a
service error, and
printing has stopped.

Turn the printer off and back
on.

If the lights are still blinking,
contact the place where
printer was purchased.

Press and release twice
quickly t o vie w the seco ndary
message. See page

“Service prim ary code” on
page 2-37.

2-22 Service Manual

4511-xxx

Printer error

Light pattern Meaning Action

The printer has one of
the following errors:

• Memory is full,
insuff ic ie n t to save
what is in the buffer,
or insufficient to
defragment flash
memory.

• A page is too
complex to print or is
shorter than the set
page margins.

• Resolution of a
formatted page is
reduced to 300 dpi.

• A font error occurred.

• Communication with
the host computer is
lost.

• Press twice quic kly to
see the secondary error
code. See “Additional

information—secondary
error codes” on
page 2-24 for more

information.

• Press to clear the
secondary message.

Diagnostics —E238 , E240, and E240n

2-23

4511-xxx

Additional information—secondary error codes

• When the light is flashi ng and light is on, a secondary printer

error has occurred.

• When the and lights are both on, a paper jam secondary

error has occurred.

• W hen the and the lights are both on, a print cartridge error

has occurred.

Press and release twice to display the secondary err or code light
pattern.

The foll owing tables show what these light patterns mean and what to do.

Paper jam at the input sensor (200 error)

Light pattern Meaning Action

Media has stopp ed o v er
the input sensor.

Remove the print cartridge to
access the area. Check for
obstructions and remo ve
them.

2-24 Service Manual

4511-xxx

Paper jams between input sensor and exit sensor (201 error)

Light pattern Meaning Action

Paper has cleared the
input sensor but not
made the exit sensor.

Check the paper pat h for
obstacles. The fuser should
be inspected.

Paper jams as a printed job exits the printer (202 error)

Light pattern Meaning Action

A paper jam has
occurred as the pap er is
exiti ng the printer.

Clear the paper jam.

Diagnostics —E238 , E240, and E240n

2-25

4511-xxx

Paper jams as it exits tray 2 into the printer (241 error)

Light pattern Meaning Action

A paper jam has
occurred as the paper is
exiting the paper tray
and entering the printer.

Clear the paper jam.

Paper Jams as it exits tray 2 (242 error)

Light pattern Meaning Action

Paper jams in Tray 2
between time of picking
and the input sensor.

Clear the paper jam.
Check the pick tires and for

any obstructions.

2-26 Service Manual

4511-xxx

Paper jam in the manual feeder (251 error)

Light pattern Meaning Action

A paper jam has
occurred in the manu al
feeder.

Clear the paper jam.

Complex page

Light pattern Meaning Action

The page may not print
correctly because the
print information on the
page is too complex
(that is, too large for the
printer memory).

• Press to clear the

• To avoid this error in the

• Install addi tional printer

message and continue
processing the print j ob
(some of the print data
may be lost).

future:

–Reduce t he compl exit y of

the page by reducing t he
amount of text or
graphics on the page and
deleting unnecessary
downloaded fonts or
macros.

–Set Page Protect to on

in the Local Printer Setup
Utility.

memory.

Diagnostics —E238 , E240, and E240n

2-27

4511-xxx

Pri nt cartridge e rrors

Light pattern Meaning Action

31 Error—Print
cartridge is either
missing or defective.

32 Error—The print
cartridge is
unsupported.

Install the correct cartridge.

Replace the cartridge.

2-28 Service Manual

33 Error—The print
cartridge has an invalid
refill.

Replace the cartridge.

4511-xxx

Print cartridge errors (continued)

Light pattern Meaning Action

42 Error—The print
cartridge was
manufactured for a
different geographic
region than the printe r.

Replace the cartridge with a
cartridge from the same
region as the printer.

Insufficient printer memory

Light pattern Meaning Action

The printer does not
have enough m emory to
save the data in the
buffer.

• Press to continue

• Press to cancel the

• Press to cancel the

printing the job .

print job.

print job, turn off the print er
and install additional
memory.

Diagnostics —E238 , E240, and E240n

2-29

4511-xxx

Insufficient collation area

Light pattern Meaning Action

The printer memory
does not have the free
space necessary to
collate the print job. This
may happen due t o one
of these errors:

• Memory is full.

• A page is too
complex to print.

• A page is shorter
than the set page
margins.

• Memory is insuf ficient
to save what is in the
buffer.

•Press to clear the

• Press and release to

• Press and hold to

• To avoid this error in the

Font error

Light pattern Meaning Action

The printer has receiv ed
a request for a PPDS
font which is not
installed.

• Press and release to

• Press and hold to

• Press and release to

message and continue
printing the job (the job
may not print correctly).

cancel the print job.

rese t th e printer.

future:

–Simplify the print job.

Reduce the com plexi ty of
the page by reducing the
amount of text or
graphics on the page and
deleting unnecessary
downloaded fonts or
macros.

– Install additional printer

memory.

cancel the print job.

rese t th e printer.

clear the message and
continue printi ng.

2-30 Service Manual

4511-xxx

Defective flash

Light pattern Meaning Action

The printer detects
defecti ve flash memory.

• Press to clear the

Insufficient defrag memory

Light pattern Meaning Action

The printer has
insufficient memory to
free unused space in
flash memory.

• Delete fonts, macros, and

• Install addi tional printer

message and continue
printing.

–Downloaded fonts and

macros not previously
stored in flash mem ory
are deleted.

– Install flash me mory.

other data in RAM.

memory.

Diagnostics —E238 , E240, and E240n

2-31

4511-xxx

Network interface errors

Light pattern Meaning Action

The printer cannot
establish
communication wit h the
network.

Press to clear the
message and continue
printing (the job may not print
correctly).

Network or ENA connection lost

Light pattern Meaning Action

The printer has lost the
connection to an
external print server
(also called an external
network adapter or
ENA).

This light pattern is
displayed if your printer
is connected to the
network, but it cannot
detect the print server
when you turn on the
printer.

• Ma ke s ure the ca ble

• Turn the printer off and

• Press and hold to

connecting the ENA and
the printer is secur ely
attached.

then on to reset the print er.

rese t th e printer.

2-32 Service Manual

4511-xxx

Memory full

Light pattern Meaning Action

The prin te r is
processing dat a, but the
memory used to store
pages is full.

• Press to clear the

• Press and release to

• Press and hold to

• To avoid this error in the

Short paper

Light pattern Meaning Action

The paper length is too
short to print the
formatted dat a. Thi s
occurs when the printer
does not know th e
media size l oaded in th e
tray, or there is a
problem feeding the
media.

• Make sure the pri nt media

• Open the front cove r, clear

• Press to clear the

• Press to cancel the

message and continue
printing the job (the job
may not print correctly).

cancel the print job.

reset the printer.

future:

– Simplify the print job.

Reduce the complexity
of the page by reduc ing
the amount of text or
graphics on the page
and deleting
unnecessary
downloaded fonts or
macros.

– Install additional printer

memory.

you loaded is large
enough.

the paper path, and close
the cover to resume
printing.

message and continue
printing the job .

print job.

Diagnostics —E238 , E240, and E240n

2-33

4511-xxx

Flash full

Light pattern Meaning Action

There is not enough
free space in the flash
memory to store the
data you are trying to
download.

• Delete fonts, macros, and

• Press to clear the

• Press and release to

• Press and hold to

Unformatted flash

Light pattern Meaning Action

The printer detects
unformatted flash
memory.

• Press to clear the

• Reformat the flash

• If the error message

other data stored on the
flash memory to free up
space.

message and continue
printing.

–Downloaded fonts and

macros not previously
stored in flash memory
are deleted.

– Install flash memory

with more storage
capacity.

cancel the print job.
rese t th e printer.

message and continue
printing. The job may not
print correctly.

memory. Refer to the
Technical Reference on
the Lexmark Web site for
more information.

remains, th e flash memory
may be defective and
should be replac ed.

2-34 Service Manual

4511-xxx

Invalid engine code

Light pattern Meaning Action

The code in an internal
print server has not
been programmed, or
the programmed code is
not valid .

Download valid engine code
to the internal print server.

Invalid network co de

Light pattern Meaning Action

The code in an internal
print server has not
been programmed, or
the programmed code is
not valid .

Download v alid n etw ork code
to the internal print server.

Diagnostics —E238 , E240, and E240n

2-35

4511-xxx

Service codes

All service errors are indi cated by all lig hts flashing as the primary
notification or code. The secondary light pattern indicates an area or
function which has the error. Tertiary codes (shown on the f ollowing pages)
indicate specific device errors. When all li ghts flash, double-click to see
the secondary code. Double-click again to see the tertiary code. If you
double-cl ick again, you return to the primary light pattern again.

In the following exampl e:

• The primary light pattern indicate s a service error (all flashi ng). Doub le-

click for more information.

• The secondary light pattern indicates a fuser or toner sensor error.

Double-click for more information.

• The tertiary light pattern indicates th e fan has stalled. If y ou double-

click again, the original primary light pattern will appear.

Note: If you send data to the printer and all lights flash simultaneously, and

double-clicking does not produce a secondary code, you may
have a code problem. Contact the next level of support.

2-36 Service Manual

4511-xxx

Service primary code

✷ Light blinking

When this code appears, double-cli ck t o reveal the secondary codes.

Service primary code

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

Primary code for

ser vice er rors

See secondary codes

✷

✷

✷

✷

✷

✷

Diagnostics —E238 , E240, and E240n

2-37

4511-xxx

Service secondary error codes

Service secondary error codes

Service secondary err or codes

Lights

Continue

Ready

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

Error

90x—Software

91x—DC motor or

transfer roll

92x—Fuser or to ner

sensor

93x—Printhead,

drive m otor, RIP

to engine

94x—RIP to engine

communications,

engine electronics

95x—Controller card

(NVRAM, ROM, or

NAND)

✷✷✷✷✷✷

✷✷

✷✷

✷✷✷

2-38 Service Manual

4511-xxx

Service secondary error codes (continued)

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

Service secondary error

codes

96x—RAM memory

97x—Network

98x—Paper port

communications

✷✷✷

✷

✷✷

✷✷

✷

Diagnostics —E238 , E240, and E240n

2-39

4511-xxx

Service tertiary error cod es

Service error codes are gener ally non-recoverable except in an inte rmittent
condition when y ou can POR (power-on res et) the printer to temporarily
recover from the error.

Note: All service errors are initially communicated by all li ghts flashing

which is the primary indicati on or code. For brevity, this indication is
not repeated in the following cod es.

Controller software

Controller software error/illegal trap (90x). For the other errors, which
indicate a faulty pr ogramming process or faulty component on the controller
card, replace the controller card. See “Controll e r ca rd re m ova l” on

page 4-15.

Service tertiary error codes—controller software

Lights

Continue

Ready

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

Error

Service
secondary
codes—
90x

✷

Service tertiary

codes

902—General

engine

softwa re error

905—Interface

violation by

paperport device

✷✷

✷

✷

✷

2-40 Service Manual

4511-xxx

Transfer roll or tray 2

CAUTION: When you see thi s symbol, there is a danger from

hazardous volt age 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.
Code 914 indicates an error in tray 2 motor. Replace the drawer.
Code 917 indicates a problem in the transfer roll circuitry. Check the

continuity from the cable connection on the HVPS (high vol tage power
supply) to the right si de of th e transfer roll.

Service tertiary error codes—transfer roll

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

Service
secondary

Service tertiary

codes
codes—
91x

914—Tray 2

motor

917—Transfer

roll ci rcuitry

✷

✷✷

✷✷

✷

✷✷

Diagnostics —E238 , E240, and E240n

2-41

4511-xxx

Fuser, fan, or toner sensor error

Codes 920 through 929 ind icate a probl em in the fuse r (see “Fuser service

check” on pa ge 2-87 for more information), a stalled fan motor, or a faulty

toner sensor or toner cartridge.

Service tertiary error codes—fuser, fan, or toner sensor

Lights

Continue

Ready

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

Error

Service
secondary

Service teriary codes—fuser, fan, or toner

sensor
codes—
92x

920—Fuser

below temperature

when printing

921—Fuser below

standby

temperature at idle

922—Fuser failed

to reach standb y

temperature

923—Fuser too

hot during printing

or idle

924—Open circuit

in thermistor path

✷

✷✷✷✷✷

✷

✷✷✷

✷✷

2-42 Service Manual

4511-xxx

Service tertiary error codes—fuser, fan, or toner sensor (continued)

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

Service teriary codes—fuser, fan, or

toner sensor

925—Incorrect

fuser la mp

installed

926—Fuser

thermistor open

circuit

927—Fan stalled

929—Toner

sensor or toner

cartridge

✷✷✷✷

✷

✷✷✷

✷✷

✷✷✷

Diagnostics —E238 , E240, and E240n

2-43

4511-xxx

Printhead, transport motor or RIP/engine communication error

Codes 930 through 935 i ndicat e a prob le m with the print head. Chec k cable s
to the printhead. Repl ace the printhead as necessary.

Codes 936 and 937 indicate a problem in the drive system.
Code 939 indicates a communication failure between the RIP and engine

processors.

Service tertiary error codes—printhead, transport motor, or RIP engine
communicati on error

Lights

Continue

Ready

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

Error

Service
secondary

Service tertiary codes—printhead, transport

motor, or RIP engine communication
codes—
93x

930—Wrong

printhead

931—N o fi rs t

HYSNC. Verify

interlock switch

at J13.

932—Printhead

lost HYSNC

933—Mirror motor

locked

934—Mirror motor

lost

lock

✷

✷✷✷✷✷

✷

✷✷✷

✷✷✷

2-44 Service Manual

4511-xxx

Service tertiary error codes—printhead, t ransport motor, or RIP/engine
communication error (continued)

Service teriary error codes

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

935—Mirror motor

not at opening

speed. Verify

+24 V dc at J11-5

936—Transport

motor init ia l lo ck

failure

937—Transport

motor los t lo ck

939—RIP/engine

communication

error

✷✷✷✷

✷

✷✷✷

✷✷

✷✷✷

Diagnostics —E238 , E240, and E240n

2-45

4511-xxx

NVRAM failure

Error codes 950–954 indicate a problem in the NVRAM (nonvolatile random
access memory). Replace th e operator panel assembly. Codes 955–959
indicate a f ailed controller card assembly. Replace the controller car d.

Service tertiary error codes—NVRAM failure

Lights

Continue

Ready

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

Error

Service

Service teriary codes—NVRAM failure
secondary
codes—
95x

950—Secure

EEPROM data

does not match

NVRAM

951—Secure

EEPROM failure

952—NVRAM CRC

failure

954—NVRAM

chip failure

955—Code ROM or

NAND failed CRC

✷

✷✷✷✷✷

✷✷✷

✷

✷✷ ✷

Note: NVRAM is on the operator panel printed circuit board while secure

NVRAM is on the controller card. Check margin align ments after
replacing the operator panel assembly. See “Printhead service

check” on page 2-111 for more information. If margin error s are

unacceptable, corrections can only be made through software.
Contact the next level of support.

2-46 Service Manual

4511-xxx

Service tertiary error codes—NVRAM failure (continued)

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

Service tertiary codes—NVRAM

failure

956—Processor

failure

957—ASIC failure

958—NAND failure

959—SRAM

failure

✷✷✷✷

✷✷

✷✷

✷✷

✷✷

Diagnostics —E238 , E240, and E240n

2-47

4511-xxx

RAM memory error

This error indicates RAM failure. Remove DIMM(s), and POR the printer . If
the error persist s, replace the card. If the error subsides, check the DIMM.
Replace faulty DIMM.

Service tertiary error codes—RAM memory error

Lights

Continue

Ready

Toner Low/

Replace PC

Kit

Load Paper

Paper Jam

Error

Service
secondary
codes—
96x

✷

✷

✷

Service teriary

codes—RAM

960—RAM

solde red on t h e

board is bad

961—RAM in

slot 1 is bad

✷✷

✷

2-48 Service Manual

4511-xxx

Network error

Indicates an error in the network circuitry. Replace the controller card
assembly.

Service tertiary error codes—network error

Lights

Continue

Ready

Toner Low/

Replac e PC

Kit

Load Paper

Paper Jam

Error

Service
secondary
codes—
97x

Service teriary codes - network

975—Unrecognizable

network port

976—Unrecoverable

software err or in

network port

978—Bad checksum

while pro gram ming

port

979—Flash parts

✷

✷✷✷✷

✷✷

✷✷✷

✷✷

✷✷ ✷

failed while

programming port

Diagnostics —E238 , E240, and E240n

2-49

4511-xxx

Diagnostics—E340 and E342n 2

Power–On Self Test (POST) sequence

The foll owing is an example of th e events th at 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 acros s the operator
panel.

3. A screen is displayed with the memory and processor speed. A typical
example of thi s message is:

*

32 Mb 366 Mhz

4. Performing Self Test is display ed.

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.

2-50 Service Manual

4511-xxx

Overview of the operator panel and menus

Indicator light

The indicator light gives information about the statu s of your printer .

If the light is The printer is

Off Off
On On, but idle
Blinking On and busy

Diagnostic s—E3 40 and E342n

2-51

4511-xxx

Buttons

Use the five operator panel buttons to open a menu, scroll through a list of
values, change printer settings, and respond to printer messages.

Note: Buttons act on the information displayed on the second line of the

operator panel .

The following information describes the functions of each button.

Button Function
Go Press Go to:

• Return to the Ready state i f t he print er is offline (the
Ready message does not app ear on the display).

• Exit printer menus and return to the Ready stat e.

• Clear some operator panel messages.

• Resume printi ng aft er loading media and clearing paper
jams.

•Exit Power Saver.

If you have changed printer settings from the operator panel
menus, press Go before sending a job to print. The printer
must display Ready for jobs to print.

Menu Each end of the butt on has a function. Press Menu>:

• When Ready is displayed , to take t he printer off line (out of
the Ready state) and enter the menus.

• When Busy is displayed, to take the printer to the Job
Menu.

• When the printer is of fl ine, to scroll thr ough the menus.

Press <Menu to go to the previous i tem in the menus.
However, menus are circular, and using either side of the
button will event ually get to the same point.

For menu items with numeric values, such as Copies, press
and hold Menu> to scrol l qui ckl y thr ough the values . Rel ease
the button when the number you want appears.

2-52 Service Manual

4511-xxx

Button Function
Select Press Select to:

• Open the menu shown on the second line of the operator
panel. Depending on the type of menu, this action:

– Opens the menu and displays the fi rst item in the menu.
– Opens the menu item and displays the default setting.

• Save the displ ayed menu it em as the new user default
setting. The printer displays the Saved message and
returns to the menu item.

• Clear certain messages from the operator panel.

Return Press Return to return to the previous menu level or menu

Stop Press Stop at the Ready, Busy, or Waiting message to

item.

temporarily take the printer offline. The message changes to
Not Ready. No data is lost.

Press Go to return the printer to the Ready, Busy, or
Waiting sta te.

Diagnostic s—E3 40 and E342n

2-53

4511-xxx

Diagram of the printer menus

Not all menus or selections will be available on all models or in all situations.

Paper Menu

Paper Source
Paper Size
Paper Type
Custom Types
Universal Setup
Substitute Size
Paper Texture
Paper Weight

PostScript
Menu

Print PS Error
Font Priority

PPDS Menu
Orientation

Lines pe r Pag e
Lines pe r Inch
Page Format
Character Set
Best Fit
Tray 1 Renumbe r
Auto CR after LF
Auto LF after CR

Finishing Me nu

Copies
Blank Pages
Collation
Separator Sheets
Separator Source
Multipage Print
Multipage Order
Multipage View
Multipage Border

PCL Emul Menu

Fo nt Sourc e
Font Name
Point Size
Pitch
Symbol Set
Orientation
Line s per Pa ge
A4 Width
Tray Renumber
Auto CR after LF
Auto LF afte r CR

Parallel Menu

PCL SmartSwitch
PS SmartSwi tc h
NPA Mode
Parallel Buffer
Advanced Status
Protocol
Honor Init
Parallel Mode2
MAC Binary PS

Utilities M enu

Quick Demo
Print Menus
Print Net Setup
Print Fonts
Print Directory
Print Demo
Factory Defaults
Hex Trace

Setup Menu

Printer Language
Power Saver
Resource Save
Download Target
Print Timeout
Wait Timeout
Auto Continue
Jam Recovery
Page Protec t
Print Area
Display Language
Toner Alarm

Network Menu

PCL SmartSwitch
PS SmartSwitch
NPA Mode
Network Buffer
Mac Binary PS
Std Net Setup

Job Menu

Cancel Job
Reset Printer
Print Buffer

Quality Menu

Print Resolution
Toner Darkness
PictureGrade™

USB Menu

PCL SmartSwitch
PS SmartSwit ch
NPA Mode
USB Buffer
Mac Binary PS

2-54 Service Manual

4511-xxx

Messa ges and error codes

User attendance messages

User attendance messages

Message Explanation

Change Cartridge
Invalid Refill

Change <input source>
<custom type name>

Change <input source>
<custom string>

Change <input source>
<size>

Remove the print ca rtridge, and install a new
cartridge.

This message displa ys when the user should
change the media installed in one of the input
options.

•<input source>=Tray 1, Tray 2, Tray 3, or
Manual feeder.

•<Custom Type name>=Custom 1 through
Custom 6 using the MarkVision™ utility.
When the printer is prompting f o r one of the
custom types whi ch has b een named b y the
user, then only the custom type name is
displayed on line 2. The name may be
truncated to fit the display.

This message displa ys when the user should
change the media installed in one of the input
options.

•<input source>=Tray 1, Tray 2,Tray 3, or
Manual feeder.

•<custo m strin g >= a user-definable name.

This message displa ys when the user should
change the media installed in one of the input
options:

•<input source>=Tray 1, Tray 2, Tray 3, or
Manual feeder.

•<size>=letter, legal, B5, A4, Executive,
Universal, A5, Folio, or Statement. For
env elopes, <size>=7¾ Envelope, 9
Enve lope, 10 Envelope, DL Envelope, C5
Enve lope, B5 Envelope, or other Enve lope.

Diagnostic s—E3 40 and E342n

2-55

4511-xxx

User attendance messages (continued)

Message Explanation

Change <input source>
<type><size>

Close Door Close the front access door.

Delete All Jobs
Go/Stop?

This message displays when the user should
change the media installed in one of the input
options.

•<input source>=Tray 1, Tray 2, Tray 3 , or
Manual feeder.

•<type>=Bond, Card stock, Colored,
Envelope, Labels, Ltr head, Plain, Preprint,
or Transparency.

•<size>=letter, legal, B5, A4, Executive,
Universal , A5, Folio , or Statement. For
envelopes, <size>=7¾ Envel ope, 9
Envelope, 10 Envelope, DL Envelope, C5
Envelope, B5 Envelope, or other Envelope.

When the user has selected Print and Hold
Delete All J o bs , this message is displayed.
The foll owing actions ma y be taken:

• Press Go to confirm the selection. All jobs
are deleted.

• Press Return or Stop to cancel the delete
operation.

2-56 Service Manual

4511-xxx

User attendance messages (continued)

Message Explanation

Insert <tray> Tray= Tray 1 or Tray 2 .

The printer does not detect the presence or
absence of a tray, but that paper was not
picked. Replace the tra y, and press Go.

Note: This situation usually occurs when the
tray is refilled during a job. To refill a tray
during a printing session, press Stop, and
wait for pages to reach the output bin before
refilling the tray.

The following actions may be taken:

• Insert the requested tray.

•Press Menu until Job Menu displays. The
foll owing selections ar e available:

– Cancel Job
– Reset Printer

If the message cannot be cl eared, verify
whether the paper is being picked. If so, and
the paper advances to activate the input
sensor, this message would indicate a sensor
problem. Other wise, check the pick tires and
pick mechanism.

Install Tray x
or Cancel Job

Tray x=Tray 2 or Tray 3.
This message is displayed when a paper

handling option has been hot unplugged. The
printer requires th e rei nstallation of the option
to print a page which has been formatted by
the interpreter before the option was removed.

The following actions may be taken:

• Install the option.

•Press Menu until Job Menu disp lays.
Select one of the following:

– Cancel Job
– Reset Printer

If the message cannot be cl eared, check
connections and t hen PO R the prin ter with t he
option attached . If the message persists ,
check the cables, starting at the controller
card.

Diagnostic s—E3 40 and E342n

2-57

4511-xxx

User attendance messages (continued)

Message Explanation

Load <input source>
<custom type name>

Load <input source>
<size>

31 Missing or
Defective Cart.

Input source=Tray 1, Tray 2, or Manua l Fe eder.
Custom type name is a user def ined media

type.
The foll owing actions ma y be taken:

• Load media in the in dicated source.

• Press Menu until Job Menu displa ys.
Select one of the following:

– Cancel Job
– Reset Printer

If the message cannot be cleared , go to “Inpu t
tray(s) service check” on page 2-64.

Input source=Tray 1, Tray 2, or Manua l Fe eder.
Size=Letter, Legal, B5, A4, A5, Exec, Univ.,

Folio, or Stmt.
The foll owing actions ma y be taken:

• Load media in the in dicated source.

• Press Menu until Job Menu displa ys.
Select one of the following:

– Cancel Job
– Reset Printer

If the message cannot be cleared , go to “Inpu t
tray(s) service check” on page 2-64.

The cartridge may be missing and the front
access doo r closed. Return the cartridge. The
cartridge may also be defectiv e. Replace the
cartridge.

32 Unsupported
Print Cartridge

33 Change Cartridge The toner cartridge has an in valid refill.

Error 32 di splays when the top cover is cl osed
and an unsupported print cartridge is
detected. It may take the printer 10–20
seconds to determine if the print cartridge is
supported. Depending on the sett ing of the
Machine Class ID, the print er may be allow ed
to print pages during this 10–20 second
interval. If pages are allowed to print, t hen
they are not rep rin ted once a good print
cartridge is inserted. Replace the cartridge.

2-58 Service Manual

4511-xxx

User attendance messages (continued)

Message Explanation

35 Res Save Off
Deficient Memory

37 Insufficient
Defrag Memory

The printer lacks sufficient memory to enable
Resource Save. The following actions m ay be
taken:

•Press Go to clear the messa ge. The printer
disables Resource Save.

• Install additional memory.

• Set lin k buffer s to Auto, return to Rea d y,
enable Resource Save, and reset the link
buffers.

This message display s prior to the actual start
of the defragment ation process. If there is not
enough free mem ory availabl e to co mplet e th e
process, the process will not proceed, and no
data already in memory will be lost.

While this message is displayed, the foll owing
actions ma y be taken:

•Press Go to clear the m essage. To perform
defragmentation operati on, you can:

– Delete fonts, macros , and other da ta from

RAM.

– Install additional printer memory .

•Press Menu until Job Menu appears. The
following functions may be av ailable:

– Cancel Job
– Reset Printer

37 Insufficient
Memory

Held Jobs may be
lost

This message displa ys when there is not
enough memory available to continue
processing a job , and Print and Hold feature is
in use. The printer frees m em ory by del eting
the oldest Reserve Print and Verify Print jobs.
It deletes only the amount needed t o continue
the incoming job. Some or all of the jobs may
not be res to red. If, while pr in t in g the current
job, it runs out of memory again, another
message is not posted.

•Press Go to clear the message. Some of
the Print and Hold jobs on the disk wi ll not
be restored. They remain on the disk, but
cannot be accessed.

•Press Menu until Job Menu appears. The
function, Reset Printer, may be available .

Diagnostic s—E3 40 and E342n

2-59

4511-xxx

User attendance messages (continued)

Message Explanation

38 Memory Full This message displays when the printer is

39 Complex Page This message displays when the page is too

processing an incoming job, and there is
insufficient memory available to continue
processing the job. The following actions may
be taken:

• Press Go to clear the messa ge. P erf orm the
defragment operation:

– Simplify the print job.
– Delete fonts, macros, and other data in

RAM.

– I nstall additional memory.

• Press Menu to displa y Job Menu. The
following functions may be available:

– Cancel Job
– Reset Printer

comple x to print. Th e fol lo wing actions ma y be
taken:

• Press Go to clear the message and
continue the j ob. Some data loss may
occur. Simplify the print job and reprint, if
necessary.

• Press Menu until Job Menu appears. The
following selectio ns are possible:

– Cancel Job
– Reset Printer

42 Cartridge Region
Mismatch

2-60 Service Manual

Toner cartridges are manufactured for specific
geographic regions. This message indicates
this cartridge does not match the region for
the printer. Change the cartridge.

4511-xxx

User attendance messages (continued)

Message Explanation

50 PPDS
Font Error

51 Defective
Flash

52 Flash Full This message displays when there i s not

This message displays when the PPDS
interpreter has encountered a font error.

Note: This error may only occur when the
PPDS compiler requests a font which is not
present or is not installed.

The following actions may be taken:

•Press Go to clear the mess age and
continue pro cessing the job.

•Press Menu until Job Menu appears. The
foll owing are av ail able:

– Cancel Job
– Reset Printer

This message displa ys when the printer
detects a defective flash. This error m ay occur
at power on, or during flash format and write
operations . Press Go to clear the message.
The flash is marked as bad, and normal
operation continues. Flash operations are not
allowed until the problem is resolved.

enough free spa ce in th e fla sh memory to hol d
the resources that have been requested to be
written to flash.

The following actions may be taken:

•Press Go to clear the mess age and
continue pro cessing the job.

•Press Menu until Job Menu appears. The
foll owing are av ail able:

– Cancel Job
– Reset Printer

53 Unformatted
Flash

This message displa ys when the printer
detects an unformatted flash at power on.
Press Go to clear the message. The flash is
marked as bad, and normal operation
continues. Flash operations are not allowed
until the flash is formatted.

Diagnostic s—E3 40 and E342n

2-61

4511-xxx

User attendance messages (continued)

Message Explanation

54 Std Network
Software Error

55 Unsupported
Flash

56 Std Parallel
Port Disabled

56 Standard USB
Port Disabled

This error displ ays when a network port is
detected, b ut the printer cannot establish
communications with it.

Press Go to clear the message. The printer
disables all communications to the network
interface.

An unsupported flash option is installed in the
DIMM slot. Turn off the printer, and remov e the
unsupported flash option in the specified slot.

This error is displ a yed when da ta is sent to th e
printer across the par all el port, but the par alle l
port has been disabled. Once this message is
displayed, reporting of further error s is
suppressed until the menus are entered, or
the printer is reset . The following actions ma y
be taken:

• Press Go to clear the m essage. The printer
discards any data received on the par allel
port.

• Press Menu until Job Menu appears, and
select Reset Printer.

Displayed when status is requested over th e
USB port, but the port has been disabled.
Once the error has been displayed for the first
time, reporting of fu rther errors is suppressed
until the menus are entered or the printer is
reset.

The foll owing actions ma y be taken:

• Press Go to clear the m essage. The printer
discards any data received on the USB
port.

• Press Menu until Job Menu appears, and
select Reset Printer.

58 Too Many
Trays Attached

2-62 Service Manual

This error displays when too many input trays
are attached to the prin ter.

4511-xxx

User attendance messages (continued)

Message Explanation

58 Too Many
Flash Options

84 Photoconductor
Life Warning

84 Replace
Photoconductor

This error displa ys when too many flash
options are installed in the printer.

The following options may be taken:

• Turn off the printer, and remove the extra
flash optio ns.

•Press Go to clear the mess age. The extr a
flash optio ns are ignored.

This message displa ys when the
photoconductor unit is near end of life. Press
Go to clear the message.

This message displa ys when the
photoconductor is exhausted. The printer is
disabled until the photoconductor is replaced.

Replace the photoconductor:

1. Turn the printer off, and replace the
photoconductor unit.

2. Reset the page count.

• Press and hold Select and Return while
turning the printer on.

• Release the button when Performing
Self Test displays.

• Select Reset Maint Cnt, and press
Select.
The coun ter is reset to ze ro.

88 Toner Low This message displa ys when toner low occur s

and the toner low al arm is acti va ted . Press Go
to clear this messag e.

Diagnostic s—E3 40 and E342n

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4511-xxx

Paper jam messages

Repeating jams or jam mess ages can be caused by any of t he following :

• Faulty pick solenoids or worn cams of the solenoids.

• Faulty flags or springs.

• Worn backup rollers at the reference guide.

• Improperly adjust ed reference guide.

• D ebris in the paper path.

• Paper not of the specified lengt h.

Paper jam messages

Message Explanation

200 Paper Jam
Remove Cartridge

201 Paper Jam
Remove Cartridge

202 Paper Jam
Open Rear Door

241 Paper Jam
Check Tray 1

242 Paper Jam
Check Tray 2

251 Paper Jam
Check Manual Feeder

The input sensor under print cartridge is
covered too long, is covered during POR, or is
covered when Go is pr essed after clearing a
different jam or problem. The exit sensor could
also be cove red. Rem ov e th e print cartridge and
open the rear door to remove the media.

Paper is jammed between the printer input and
exit sensor. Remove the print cartridge to clear
the paper path.

The exit sensor is ei ther covered duri ng PO R or
covered too long. Open the rear door to access
the jam area.

Paper is jammed between Tray 1 and the input
sensor.

Tray 2 pass thru sensor is covered during
warm-up.

Try opening Tray 2. If the tray is diffic ult to
remove , then you may have to remo ve the tra y
above.

Sensor at the manual feeder indica tes paper is
stuck in the pat h. Remove the paper, and check
the flag/sensor.

2-64 Service Manual

4511-xxx

Service error codes

Service error codes are generally non-recoverable exce pt i n a n int ermittent
condition when yo u can POR the prin ter to temporarily recover from the
error condition.

Service error codes (9xx)

Error Description Action

900 Service

RIP software

902 General engine

software failure

905 Interface violation by

the Pape rport device

917 Transfer roll The likely cause is a faulty HVPS. It may

920 Fuser error

Indicates th at the fuser
is below temper ature
when printing.

921 Fuser error

Indicates th at the fuser
is below proper
temperature during
standby or idl e ti m e.

922 Fuser error

Fuser failed to reach
standby temperature.

Server firmware prob lem. Contact the
next level of support.

An unrecoverable engine software error.
Reset the printer (POR). If the problem
continues, replace the controller card.

also indicate a problem in t he tr ansfer r oll
area. Go to “Transfer roll service

check” on page 2-111.

Go to “Fuser service chec k” on

page 2-87.

Go to “Fuser service chec k” on

page 2-87.

Verify line vol tage to the fuser. Go to

“Fuser service check” on page 2-87.

923 Fuser is too hot during

printing or when printer
is idle.

924 An open circuit has

been de tect ed i n the
fuser th e r m i st o r circuit.

Go to “Fuser service check” on

page 2-87.

Check cabl ing and connectors . Go to

“Fuser service chec k” on pa ge 2-87 for

the thermistor.

Diagnostic s—E3 40 and E342n

2-65

4511-xxx

Service error codes (9xx) (continued)

Error Description Action

925 Fuser Error

(Incorrect fuser lamp.)

927 Fan Err or

Fan is stalling.

929 Toner sensor T he toner sensor is not oper ati ng

931 Printhead—no first

HSYNC

932 Printhead—lost

HSYNC
934 Mirror motor lost lock Replace the printhead.
935 Mirror motor unable to

reach operating speed.
936 Transport motor initial

lock fail u re

937 Transport motor lost

lock

Replace fuser with co rrect one. See

“Fuser removal” on page 4-28.

Replace the fan. See “Fan removal” on

page 4-26.

properly, the developer drive assembly is
not operating properly, or the print
cartridge is def ectiv e. Go to “Sensor T est

(input tray)” on page 3-27.

Check for unplugged printhea d, faulty
cabling, or faulty printhead.

Replace the printhead.

Faulty printhead, cabling or connector.

Indicates a problem with the main drive
motor or a jam occur red duri ng the motor
ramp-up to speed.

Fa ulty motor or a jam occurred after
motor ramp-up to speed. Possible
problem with the main drive or motor
cable.

950 Controller car d There is a mismat ch between the

variables in the EPROM on the operator
panel card and those in the secure
NVRAM on the controller car d. This can
only occur aft er a re placement of one of
the two parts, and the replaced part is
faulty. Replace the controller card or the
operator panel.

Warning: Always replace only one at a
time with a POR between.

951 Controller car d The secure NVRAM w as not detected on

the controller card. Replace the c ontroller
card.

2-66 Service Manual

4511-xxx

Service error codes (9xx) (continued)

Error Description Action

952 NV failure:n Recoverabl e error. Reset (POR) the

954 NVRAM CRC failure Indicates the NVRAM e xperienced a CRC

955 Code CRC <loc> Replace the controller card. Where

956 Controller card Perform a power on res et ( P OR). I f this

957 ASIC failure Perform a power on reset (POR). If this

958 NAND failure Before proceeding, perform a power on

959 SRAM failure Perf orm a power on reset (POR). If this

960 RAM soldered on the

card is bad

printer. Where n=of fset where error
occurred.

failur e. Replace the control ler card.

<loc> = CRC Failure or ECC Failure on
the controller card.

does not fix the problem, replace the
controller card.

does not fix the problem, replace the
controller card.

reset (POR) to see if the ECC (error
correction code) can reflash NAND.

If this does not fix t he problem, replace
the controller card.

does not fix the problem, replace the
controller card.

Indicates a DRAM Memory Error on the
controller card. Replace the contro ll er
card.

961 RAM in slot 1 is bad If another SDRAM memory DIMM is

available, turn the power off, and switch
the DIMM. If the memory card now works
correctly, replace the faili ng DIMM. If this
does not fix the problem, replace the
controller card. If another DIMM is not
available, replace the memory option first
and then the controller card if necessary.

Diagnostic s—E3 40 and E342n

2-67

4511-xxx

Service error codes (9xx) (continued)

Error Description Action

975 Unrecognizable

network port
976 Software error in

network port
978 Bad checksum whil e

programming network

port.
979 Flash parts failed while

programming network

port.

A failure with the network port.
If the printer is a network model, replace

the controller card. See “Controller card

removal” on page 4-15.

Sub error codes

The sub error codes are help ful troub l eshooti ng a paper path prob l em. Each
status byte has a different level of troubleshooting value for each ar ea of the
printer . The following tabl e display s up to 8 status bytes of data. Some or all
of these bytes may be used to help diagnose a printer problem. These
status bytes are designed to help isolate paper jams and paper f eed
problems in t he base printer.

DU
DU

To identify the bytes:

xx
xx

xx
xx

xx
xx

xx
xx

DU
DU

2-68 Service Manual

Byte 1

xx
xx

Byte 5

Byte 2

xx
xx

Byte 6

Byte 3

xx
xx

Byte 7

Byte 4

xx
xx

Byte 8