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C746n
Lexmark C746n User Manual
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n
4-4
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5026
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Outp
ut bin extension cover remova
l
See
“Out
put bi
n ext
ension
cover” o
n page
7-3
f
or the part num
ber.
1.
Turn th
e pri
nter
around, s
o the bac
k is t
oward y
ou.
2.
Rotate t
he out
put
bin ex
tension c
over towar
d the
fro
nt of t
he print
er.
3.
Use a f
l
athea
d scre
wdriver
to ease t
he post
s
fr
om
the holes
on on
e side
.
290
292
Table of Contents
Default Chapter
3
Table of Contents
3
Notices and Safety Information
9
Laser Notice
9
Aviso sobre O Laser
10
Lithium Warning
15
Safety Information
15
Preface
18
Conventions
18
Connector Locations
18
Navigation Buttons
19
General Information
21
Models
21
Options
21
Media Options
22
Memory Options
22
Printer Specifications
23
Dimensions
23
Clearances
24
Memory
24
Expansion Opportunities
25
Resolution
25
Data Streams
25
Environment Specifications
25
Electrical and Power Specifications
26
Acoustic Specifications
27
Media Specifications
28
Input and Output Capacities
30
Input and Output Sizes and Types
31
Paper Guidelines
33
Tools Required for Service
35
Acronyms
36
Diagnostic Information
37
Start
37
Operator Panel and Menus
38
C746X Operator Panel
38
C746X Buttons and Light Descriptions
38
C748X Operator Panel
39
C748X Buttons and Light Descriptions
39
Administrative Menus
44
Power-On Self Test (POST) Sequence
45
Symptom Tables
45
Printer Symptom Table
45
Print Quality Symptom Table
46
User Status and Attendance Messages
47
Error Codes and Messages
57
Service Checks
81
XX-Cartridge Errors Service Check
81
XX-Mirror Motor Service Check
81
XX, 112.XX, 113.XX, and 114.XX-Printhead Error Service Check
82
XX-Fuser Error Service Check
83
XX, 920.02-Autocomp (Tray 1) Motor Error Service Check
85
XX, 906.01-906.04-Motor (Fuser) Error Service Check
85
XX-Motor (EP Drive Assembly Top Cartridge 1 Motor) Error Service Check
87
XX-Motor (EP Drive Assembly Middle Cartridge) Error Service Check
88
XX-Motor (EP Drive Assembly Bottom Cartridge) Error Service Check
90
XX, 148.XX-Motor (Mpf/Duplex) Error Service Check
91
XX, 920.01-POST (Power-On Self Test) Aligner Error Service Check
93
XX-Cam Motor Error Service Check
94
XX-COD (Color on Demand) Motor Service Check
96
XX, 161.XX-Motor Error (Option Tray 2) Service Check
96
XX, 163.XX-Motor Error (Option Tray 3) Service Check
97
Next
97
XX, 165.XX-Motor Error (Option Tray 4) Service Check
98
XX, 167.XX-Motor Error (Option Tray 5) Service Check
99
XX-Motor (HCIT Elevator) Error Service Check
100
Go Back
100
250.03-Paper Jam Error Service Check
100
201.08, 201.31-Paper Jam Error Service Check
101
Paper Jam Error Service Check
104
230.05-Paper Jam Error Service Check
106
Paper Jam Service Check
107
242.11-Paper Jam Service Check
108
Paper Jam Service Check
109
Paper Jam Service Check
110
Paper Jam Service Check
111
Paper Jam Service Check
112
Paper Jam Service Check
113
Paper Jam Service Check
114
243.11-Paper Jam Service Check
115
Paper Jam Service Check
116
Paper Jam Service Check
117
Paper Jam Service Check
118
Paper Jam Service Check
119
Paper Jam Service Check
120
244.11-Paper Jam Service Check
121
Paper Jam Service Check
122
Paper Jam Service Check
123
Paper Jam Service Check
124
Paper Jam Service Check
125
245.11-Paper Jam Service Check
126
Paper Jam Service Check
127
Paper Jam Service Check
128
Paper Jam Service Check
129
900.99 (Except 900.05)-System Software Error Service Check
129
Transfer Module Error Service Check
132
Engine Software Error, NVRAM MGR Problem Service Check
132
920.25-Transfer Module Missing or Not Connected Service Check
133
POST (Power-On Self Test) Fuser Motor Not Connected Error Service Check
133
POST (Power-On Self Test) Printhead Motor Not Connected Error Service Check
134
Input Sensor Service Check
135
POST (Power-On Self Test)-Narrow Media Sensor Error Service Check
135
Exit Sensor Service Check
136
POST (Power-On Self Test)-Four Toner Sensors Not Connected Error Service Check
138
POST-Three Toner Sensors Not Connected Error Service Check
139
POST (Power-On Self Test)-Two Toner Sensors Not Connected Error Service Check
140
POST (Power-On Self Test)-One Toner Sensor Not Connected Error Service Check
141
POST (Power-On Self Test) Cartridge Motor 1 Not Connected Error Service Check
142
POST (Power-On Self Test)-Cartridge Motor 2 Not Connected Error Service Check
143
POST (Power-On Self Test)-Bad Printhead NVRAM Data Error Service Check
144
POST (Power-On Self Test)-Output bin Cable Not Connected Error Service Check
145
POST (Power-On Self Test)-Cartridge Motor 3 Not Connected Error Service Check
146
Next
146
POST (Power-On Self Test)-Transfer Module Stepper Motor Not Connected Error Service Check
146
POST (Power-On Self Test)-24 V Power Supply Failure Error Service Check
148
Go Back
148
POST (Power-On Self Test)-Duplex Motor Not Connected Error Service Check
149
920.28, 920.29-POST (Power on Self Test) Option Tray Error Service Check
150
MPF Paper Present Sensor Not Connected Service Check
150
925.03, 925.05-Fan Error Service Check
150
Cartridge Cooling Fan Error Service Check
151
XX, 947.XX-Transfer Roll Error Service Check
152
950.29-EPROM Mismatch Failure
154
XX-System Board Failure Service Check
155
Interlock Switch Service Check
156
V Interlock Switch Service Check
157
Bubble Sensor Service Check
158
Dead Printer Service Check
160
Networking Service Check
160
Operator Panel Service Check
163
Print Quality Service Check
164
Tray 1 Missing Service Check
171
Tray Linking Service Check
172
Diagnostic Aids
173
Accessing Test and Diagnostic Procedure Menus
173
Diagnostics Menu
173
Diagnostics Menu Structure
174
Available Tests
174
Registration
177
Alignment
180
Motor Tests
182
Print Tests
184
Input Source Tests
184
Hardware Tests
186
Panel Test
186
Dram Test
186
Serial 1 Wrap
186
Duplex Tests
188
Print Test (Duplex)
189
Top Margin (Duplex)
190
Left Margin (Duplex)
190
Sensor Test
191
Printhead Tests
192
Mirror Motor Test
192
Servo Laser Test
192
Device Tests
192
Printer Setup
194
Flash Test
194
Serial Number
195
Model Name
195
EP Setup
196
Ep Defaults
196
Reports
197
Event Log
197
Exit Diagnostics
198
Clear Log
198
500 D
196
Configuration Menu (CONFIG MENU)
199
Available Tests
199
Reset Fuser Cnt
200
Color Lock out
200
Print Quality
200
Reports
201
Color Trapping
201
Tray Insert Msg
201
Panel Menus
201
PPDS Emulation
202
Download Emuls
202
Demo Mode
202
Factory Defaults
202
Energy Conserve
202
Automatic Color Adjust
203
Auto Align Adj
203
Color Adj State
203
Enforce Color Order
203
Color Alignment
203
Motor Calibration
204
Paper Prompts
204
Envelope Prompts
204
Action for Prompts
204
Jobs on Disk
204
Disk Encryption
205
Wipe Disk
205
Wipe All Settings
205
Duplex Gloss
206
Font Sharpening
206
Require Standby
206
UI Automation
206
Key Repeat Initial Delay
206
Key Repeat Rate
206
Clear Custom Status
206
USB Speed
206
Automatically Display Error Screens
207
Exit Config
207
Front Cover Locked in Place
208
Printhead Verification
211
Paper Jams
214
Error Jam Locations
214
Clearing Jams
215
Paper Jam
218
Theory of Operation
223
Paper Path
223
Electrophotographic (EP) Process
235
Main Components
235
Electrical Interlock
245
Repair Information
247
Safety Information
247
Data Security Notice
247
Handling ESD-Sensitive Parts
248
Handing the Photoconductor Unit
248
Transportation/Storage
248
Handling
248
Parts Not to be Touched
248
Screw and Retainer Identification Table
249
Adjustments
254
Printhead Alignment
254
Printer Removal Procedures
274
Precautions to Take before Maintenance Work
274
Cover Removals
275
Front Access Cover Assembly Removal
275
Left Cover Removal
277
Operator Panel Assembly Removal (C746)
280
Operator Panel Assembly Removal (C748)
283
Operator Panel Bezel Removal
287
Operator Panel Buttons Removal (C746)
287
Operator Panel Buttons Removal (C748)
289
Output bin Extension Cover Removal
291
Paper Tray Dust Cover Removal
292
Rear Frame Cover Removal
293
Rear Left Cover Removal
294
Rear Right Cover Removal
295
Rear Upper Cover Removal
296
Right Cover Removal
297
Top Access Cover Assembly Removal
300
Top Cover Assembly Removal
304
Printer Removals
307
Interlock Switch Cable Removal
307
Interlock Switch Removal
309
Bin Full Sensor Flag Removal
311
Go Back
311
Bin Full Sensor Removal
311
Cartridge Cooling Fan Removal
312
Cartridge Motor 1/Fuser Cable Removal
313
Cartridge Motor 2/3 Cable Removal
315
Color on Demand Assembly Removal
316
Contact Springs Kit Removal
321
Cooling Fan Removal
331
Cooling Fan Filter Removal
332
Duplex Reference Edge Guide Assembly Removal
333
Electrophotographic (EP) Drive Assembly Removal
336
Front Door Assembly Removal
346
Front Door Assembly Front Cable (Left) Removal
349
Front Door Assembly Front Cable (Right) Removal
353
Fuser Removal
356
Fuser AC Cable Removal
358
Fuser DC Cable Removal
359
Hard Drive Assembly Removal
360
High-Voltage Power Supply (HVPS) Removal
361
High-Voltage Power Supply (HVPS) Cable Removal
363
Left Bell Crank Assembly Removal
364
Low-Voltage Power Supply (LVPS) Removal
365
Motor Driver Card Removal
367
Motor Driver Cable Removal
368
Multipurpose Feeder (Mpf)/Duplex Gear and Housing Removal
369
Multipurpose Feeder (Mpf)/Duplex Motor Assembly Removal
371
Multipurpose Feeder (Mpf)/Duplex Motor Cable Removal
374
Multipurpose Feeder (MPF) Paper Present Sensor
375
MPF Pick Removal
377
Operator Panel Cable Removal
378
Operator Panel Ground Cable Removal
379
Operator Panel USB Connector Cable Removal
380
Option Cable Removal
381
Paper Pick Mechanism Assembly Removal
383
Photoconductor Unit Removal
388
Pick Arm Roll Removal and Replacement
389
Printer Pad Removal
390
Printhead Removal, Installation, and Adjustment
391
Right Bell Crank Assembly Removal
400
Speaker Removal
401
System Board Removal
401
System Board Support Shield Removal
406
Toner Level Sensor Removal
409
Top Cover Camshaft Assembly Removal
411
Transfer Module Removal
417
Transport Cable Removal
419
Transport Motor Cable Removal
421
Waste Toner Assembly Removal
422
Waste Toner HV Contact Assembly Removal
423
Wireless Network Antenna Removal
436
Wireless Network Card Removal
437
Option Removals
439
HCIT Front Tray Cover Removal
440
HCIT Rear Cover Removal
441
HCIT Right Cover Removal
442
HCIT Left Cover Removal
443
Feed with Bushing Roller Removal
444
HCIT Controller Board Assembly Removal
445
HCIT Drawer Slide Assembly Removal
446
HCIT Elevator Motor with Sensor Removal
446
HCIT Pick Arm Roll Removal
448
HCIT Slide Assembly with Spring Removal
449
Photointerrupter Sensor with Cable Assembly Removal
451
Top Plate Assembly Removal
452
Connector Locations
455
Locations
455
Connectors
456
System Board Diagram
456
Preventive Maintenance
459
Safety Inspection Guide
459
Lubrication Specifications
459
Maintaining the Printer
459
Cleaning the Exterior of the Printer
459
Cleaning the Printhead Lenses
460
Moving the Printer
460
Parts Catalog
461
How to Use this Parts Catalog
461
Assembly 1: Covers (C746)
462
Assembly 2: Covers (C748)
464
Assembly 3: Front
466
Assembly 4: Right
468
Assembly 5: Rear
470
Assembly 6: Left
472
Assembly 7: Top
474
Assembly 8: Cable Parts Packet
475
Assembly 9: Optional 550-Sheet Media Drawer and Tray
476
Assembly 10: Optional Special Media Tray Assembly
477
Assembly 11: Optional High-Capacity Input Option (HCIT)
478
Assembly 12: Options and Features
480
Index
481
Part Number Index
487
4
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Lexmark C746n Specifications
General
Brand
Lexmark
Model
C746n
Category
Printer
Language
English
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