Main
Second Edition (June 1996)
Copyright Lexmark International, Inc. 1996 All rights reserved.
Table of Contents
Notices and Safety Information.............................................. ix
Diagnostic Information............................................................. 5
iv
Diagnostic Aids....................................................................... 32
vi
Repair Information.................................................................. 51
Connector Locations............................................................ 101
viii
Preventive Maintenance....................................................... 119
Index ...................................................................................... 171
Parts Catalog......................................................................... 124
Notices and Safety Information
Electronic Emission Notices
Federal Communications Commission (FCC) Statement
x
Industry Canada Compliance Statement
Avis de conformit aux normes dIndustrie Canada
The United Kingdom Telecommunications Act 1984
Page
Safety Information
Ozone Information
Preface
General Information
Models Covered in this Manual
2
Options
Page
4
Abbreviations
Unique Tools Required For Service
Diagnostic Information 5
Diagnostic Information
4039 Diagnostics: Failures With Error Codes
6
Diagnostic Information 7
8
Diagnostic Information 9
10
Power-On Self Test (POST)
12
Symptom Table
Symptom Action or Service Check
Banding
Background
14
Black Page
16
Blank Page
Blurred or Fuzzy Print
Dead Machine
18
Duplex
Fan (927 Error)
20
Fuser Theory
Fuser: 920, 921, or 922 Error
Fuser: 923 Error
Honeycomb
Page
Network Card 977 Errors
Network Wrap Tests
Output Bin Sensor
24
Operator Panel Problem
Paper Feed Problem, 500-Sheet Second Tray
Paper Feed, Base Printer
26
Paper Feed, Duplex Unit
Paper Feed Problem, Envelope+ Feeder/ 100-Sheet Auxiliary Feeder
Printhead
28
Paper Size Sensing Problem
Regularly Spaced Marks
Residual Image
30
Random Marks
Skew, all edges
Skew, top and bottom only
Stalled (diamonds on display)
Vertical Void or Streak
Diagnostic Aids
Diagnostics Mode
Grouped Diagnostic Aids
34
Alphabetical List of Diagnostic Aids
Auto Clean
Auto Clean Delay
Auto Clean Frequency
Defaults
Developed Image Test
Disk Test/Clean
36
Duplex Feed 1 Test
Duplex Feed 2 Test
38
Envelope Enhance
Envelope Print Test
Error Log (plus machines only)
Fuser Temperature And Warm-Up Time
40
Maintenance Kit Count
Memory Test
Operator Panel Tests
Page Count
Paper Feed Test
42
Permanent Page Count
Print Contrast (Transfer on plus machines)
Print Registration
Print Test Page
Print Tests
44
Quick Disk Test
Quick Test
Page
46
Network Connections and Checks
Wrap Tests
LAN Information
Serial Interface Option, 10P
48
Page
50
Repair Information
Adjustments
Page
54
Fuser Drive Gear Backlash
Page
Page
Paper Feed Magnet
58
Optional Paper Feed Magnet
Printhead Skew - Level 1
BA
Page
Print Registration Adjustment
62
Removals
Covers Right Cover Removal
Front Cover Removal
Page
Page
Page
Page
D-roll Assembly Removal
68
Drive Motor Removal
Page
Page
Page
72
Fuser Removal
Fuser Input Guide Removal
Page
74
Fuser Lamp Removal
A
Page
Page
78
HVPS Removal
Page
80
Input Sensor Removal
B
A
Lower Frame Assembly Removal
Page
Page
Page
Page
86
Paper Feed Magnet Assembly Removal
Page
Page
Printhead Removal
90
System Board Removal
Page
92
System Cable Removal
Fuser/Sensor Cable Removal
Torquer Motor Removal (10P)
Page
94
Transfer Roll Housing Removal
Upper Frame Removal
Page
Page
Page
Page
100
Duplex Option System Card And Motor Removal
B
A
Connector Locations 101
Connector Locations
This chapter shows the locations of major printer assemblies, gears, connectors, and ground straps.
Major Assembly Locations
Page
Page
Page
Page
Page
Connector Locations 107
System Board Connectors 10R/12R/12C/12L
Page
Connector Locations 109
System Board 16L
Page
Connector Locations 111
System Board 10P
Page
Connector Locations 113
Mirror Motor Cable/Fan Cable
Printhead Cable Pin Laser Hsync
Page
Page
116
Connector Locations 117
Printer Ground Straps
Page
Preventive Maintenance
Page
Page
Page
Page
Parts Catalog
Parts Catalog 125
Assembly 1: Covers
126
Parts Catalog 127
Assembly 1: Covers (Continued)
128
5 10
4A
4
130
5 10
4A
4
132
Page
134
Page
136
Page
138
Parts Catalog 139
Assembly 5: Paper Feed
140
Parts Catalog 141
Assembly 5: Paper Feed (Continued)
142
Page
144
Parts Catalog 145
Assembly 7: Paper Feed Drive
146
Page
148
Page
150
Page
152
Page
154
Parts Catalog 155
Assembly 12: Fuser
156
Parts Catalog 157
Assembly 12: Fuser (Continued)
158
Page
160
Page
162
Page
164
Page
166
Page
168
Parts Catalog 169
Assembly 17: Options
170
Assembly 18: Miscellaneous
Index
Numerics
A
B
C
172
G
H
I
L
P
Q
R
S
174
T
U
V
W
Parts Catalog 157