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Lexmark
Printer
W812
Service Manual
Page 162 (Upper Card Cage Cover Removal)
Lexmark W812 - Upper Card Cage Cover Removal
236 pages
Manual
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4-44
Ser
vice Manual
4022-XX
X
Upper Card
Cage C
o
ver Remov
al
1.
Open the top cover assembly
.
2.
Remov
e the
righ
t cov
e
r
.
3.
Pull up
the r
ight fus
er latc
h.
4.
Remov
e the
two screws secur
ing th
e uppe
r card
cage cover
.
5.
Remov
e the
upper ca
rd c
age cover
.
161
163
Table of Contents
Main Page
Default Chapter
3
Table of Contents
3
Laser Notices
9
Laser Advisory Label
9
Safety Information
17
Preface
20
General Information
21
Maintenance Approach
21
Tools Required
21
Acronyms
22
Preparing for Shipping
23
Principles of Operation
24
Overview of Print Process
24
Paper Transfer
28
Generating Print Image
29
Transmission of Driving Power
30
Service Manual
32
Driving Power Transmission to Paper Feeder
33
Driving Power Transmission to Roll Registration Metal and Rubber
34
Driving Power Transmission to Drum and Transfer Roller
35
Driving Power Transmission to Fuser Assembly
36
Driving Power Transmission to Roll Assembly
37
Printer Component Function
37
250-Sheet Paper Tray/Cassette Assembly
37
Paper Pick/Feed
39
Fuser
44
Frame and Drive
47
Xerographics
50
Electrical
52
Diagnostic Information
57
Start
57
Operator Panel Messages
57
Status Screen
58
Ready
58
Status Messages
58
User Error Messages
58
Service Messages
58
User Error Messages
59
Service Error Code Table
64
Service Check Table
66
Service Checks Flowchart
67
How to Use the Service Checks Flowchart
67
How to Follow a Service Check
67
Notes on Using Service Checks
68
Symptom Service Checks
69
Inoperative Printer Service Check
70
Erratic Printer Operation Service Check
71
Blank, Erratic, or Inoperative Operator Panel Service Check
72
Paper Feed Service Check
73
Print Quality Service Checks
74
Using Diagnostic Test Print
74
Light (Undertoned) Prints Service Check
74
Blank Prints Service Check
76
Black Prints Service Check
77
Vertical Band Deletions Service Check
78
Horizontal Band Deletions Service Check
80
Vertical Streaks Service Check
81
Horizontal Streaks Service Check
82
Spot Deletions Service Check
83
Background Service Check
84
Toner on Back of Print Service Check
85
Skewed Image Service Check
87
Damaged Prints Service Check
88
Unfused Image or Image Easily Rubs off of Page Service Check
89
Repetitive Marks on each Page Service Check
90
Lead Edge Registration Is Not Correct Service Check
91
Side-To-Side Registration Is Not Correct Service Check
92
Electrical Interference
93
Diagnostic Aids
95
Using the Operator Panel Diagnostics Menu
95
Entering Diagnostic Mode
95
Exiting Diagnostic Mode
95
Print Tests
98
Print Quality Pages
100
Hardware Tests
101
LCD Hardware Test
101
Button Test
101
DRAM Memory Test
101
DRAM Error
102
ROM Memory Test
102
Parallel Wrap Test
102
Serial Wrap Test
104
Duplex Tests
106
Duplex Quick Test
106
Duplex Sensor Test
106
Input Tray Tests
107
Input Tray Feed Test
107
Base Sensor Test
108
Storage Device Tests
109
Quick Disk Test
109
Disk Test/Clean
109
Flash Test
110
Printer Setup
111
Defaults
111
Setting the Page Count
111
Viewing the Permanent Page Count
111
Serial Number
111
Configuration ID
112
Error Log
113
Viewing the Error Log
113
Clearing the Error Log
114
Configuration Mode
114
Viewing and Resetting the Maintenance Page Count
116
Setting Printer Registration
117
Repair Information
119
Removals
119
Notations in the Removals and Replacement Procedures
119
Front Cover Assembly Removal
121
Left Cover Assembly Removal
122
Rear Cover Removal
123
Right Cover Removal
124
Top Cover Assembly Removal
125
Card Cage Cover Removal
126
Duplex Output Feed Roller Assembly and Clutch Removal
127
Engine Card Removal
128
Fan Removal
129
Fuser Assembly Removal
130
HVPS Removal
131
HVPS Cover Removal
132
Left Cartridge Guide Assembly Removal
133
Lower Duplex out Guide Assembly Removal
134
LVPS Removal
135
Main Drive Assembly Removal
136
MPF Input Paper Feed Assembly Removal
137
MPF Paper Present Flag Removal
138
MPF Pick Roll Removal
139
MPF Pick Roll Assembly Removal
140
MPF Separator Pad Assembly Removal
141
MPF Solenoid Removal
142
MPF Tray Assembly Removal
143
Operator Panel Removal
144
Optional 250-Sheet Pick Roller Removal
145
Optional 500-Sheet Pick Roller Removal
145
Optional 500-Sheet Separator Pad/Lift Plate Assembly Removal
146
Paper Size Dial and Card Assembly Removal
148
Paper Tray Lift Plate Removal
149
Printhead Assembly Removal
150
Rear Plate Removal
151
Right Cartridge Guide Assembly Removal
152
RIP Controller Card Removal
152
Toner Sensor Removal
153
Transfer Guide Assembly Removal
154
Transfer Roller Removal
156
Tray 1 Present Switch Removal
157
Tray 1 Pick Roll Removal
158
Tray 1 Pick Roller Assembly Removal
159
Tray 1 Solenoid Removal
160
Upper Duplex out Guide Assembly Removal
161
Upper Card Cage Cover Removal
162
250-Sheet Separator Pad Assembly Removal
163
Connector Locations
165
P/J Location Table
165
Harness Route Diagram
174
Printer Wiring Diagrams
179
Wiring Diagram Notations
179
General Wiring Diagram
180
Engine Board <-> LVPS <-> Interlock SW and Fan (1/3)
182
Engine Board <-> LVPS <-> Interlock SW and Fan (1/3)
183
Engine Board <-> LVPS <-> Interlock SW and Fan (3/3)
184
Engine Board <-> Printhead and Toner Cartridge (1/3)
186
Engine Board <-> Printhead and Toner Cartridge (3/3)
188
And Detack Saw (3/3)
190
Turn, and SW D2X (1/3)
192
Turn, and SW D2X (3/3)
194
Engine Board <-> LVPS <-> Main Motor (1/1)
195
Engine Board <-> Sensor Toner (1/1)
196
Preventive Maintenance
197
Safety Inspection Guide
197
Scheduled Maintenance
197
Parts Catalog
199
Index
199
Index
201
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User Reference Guide
197 pages
Setup Guide
54 pages
Clearing Paper Jams
2 pages
Quick Reference
2 pages
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