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Phaser 8400
Xerox Phaser 8400 Service Manual
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3-54
Phaser 8400/8500
/8550 Color Printer
T
rou
bleshooting Procedure fo
r Power Supply
Step
Question
s and Actions
Y
es
No
1
1.
Run the
Vo
l
t
a
g
e
s
check test.
2.
Did the test pass?
Go to Step 2.
Replace the
electronics
module.
2
1.
Check the printhead power cab
le.
2.
Is the wiring damaged or not connected?
Reseat or
replace the
wiring.
Replace the
wave am
p.
119
121
Table of Contents
Default Chapter
1
Service Manual
1
User Safety Summary
3
Regulatory Specifications
5
Electrostatic Discharge (ESD) Precautions
7
Table of Contents
9
General Information
15
Printer Introduction and Overview
16
Printer Configurations
17
Control Panel Configuration
19
LED Indicators
19
Control Panel Feature Descriptions
19
Menu Maps
20
Control Panel Shortcuts
20
Parts of the Printer
21
Front View
21
Right Side View with Printer Interfaces
21
Rear View
22
Routine Maintenance Items and Consumables
23
Printer Specifications
24
Physical Dimensions and Clearances
24
Functional Specifications
25
Electrical Specifications
25
Environmental Specifications
25
Media and Tray Specifications
26
Theory of Operation
29
Main Printer Subsystems
30
Printer Subsystem Overview
30
Process Drive
32
Media Path Drive
33
Ink Loader
34
Printhead
35
Theory of Operation
37
Printhead Tilt
38
Drum Maintenance System
41
Purge System
42
Drum Assembly and Transfix System
44
Electronics Module
47
Power Supply
48
I/O Board
50
Print Process
51
Drum Preparation
52
Printing
52
Paper Pick for Tray 1
53
Paper Pick for Trays 2 - 4
54
Transfixing and Exiting
55
Duplex Printing
58
Transfix and Print Speeds
59
Printer Self-Maintenance
61
Printhead Maintenance Cycle (Eliminate Light Stripes)
61
Paper Preheater Cleaning (Remove Print Smears)
62
Transfix Roller Oiling
62
Drum Cleaning - Chase Page
62
Configuration Card Personality Parameters
63
Error Messages and Codes
67
Introduction
68
Power-Up Error Messages and LED Codes
69
BIST Error Reporting
69
POST Error Reporting
70
PEST Error Reporting
74
Fault Code Error Message Troubleshooting
75
Fault Code Error Reporting
75
Interpreting Fault Codes
75
1,000.4X Error - 525-Sheet Feeder Faults
76
2,0Xx.4X Error - I/O Circuit Board Fault
77
3,0Xx.6X - IPC Program Faults
78
4,0Xx.4X Errors - Process Control System Fault
79
5,0Xx.4X Errors - Y-Axis Sub-System Fault
82
6,0Xx.4X Errors - X-Axis Fault
84
7,0Xx.4X Errors - Process Motor Gearbox Faults
85
8,0Xx.XX Error - Wiper/Media Path Gearbox Faults
90
9,0Xx.XX Errors - Ink Loader Faults
92
11,0Xx.XX Errors - Electronics Module Interface Fault
93
13,0Xx.XX Errors - Thermal Faults
95
19,0Xx.XX Errors - Printhead Calibration Faults
102
31,0Xx.4X Errors - Mechanical Initialization Jam
103
33,0Xx.XX Errors - Tray Manager Device Faults
105
34,0Xx.XX Errors - Printhead NVRAM Faults
105
36,000.40 Errors - Drum Maintenance Faults
106
37,0Xx.XX Errors - PEST Faults
107
Jam Codes
121
Jam Code Definition Table
123
General Troubleshooting
141
Introduction
142
Hidden Service Menu
142
Service Diagnostics
144
Service Diagnostics Mode Menu
145
Service Diagnostics Menu Map
146
Check Menu Definition Tables
152
Check / Activators Menu
153
Drum Heater Relay
155
Check Shafts Menu
157
Deskew Shaft
157
Check Paper Path Menu
160
Wiper Shaft
160
Check Drive Menu
175
Check Drum Menu
182
Y-Axis Geometry
183
Y-Axis Drive
184
Check Motors Menu
188
X-Axis Motor
188
Media Path Motor
190
Check Misc Menu
193
Drum Maint/Transfix Home
198
Electronics Troubleshooting
199
Printer Power-Up Sequence
199
Mechanical Initialization (8400)
200
Mechanical Initialization (8500/8550)
202
Miscellaneous Electrical Troubleshooting
205
Verifying Power Supply Operation
215
Measuring AC Power Supply Voltages
215
Measuring DC Power Supply Voltages
216
Ensuring Ground Integrity
217
Testing Motor and Solenoid Resistances
218
Paper Path and Media-Based Problems
219
Media-Based Problems
219
Paper-Pick Errors - Trays 2, 3, and 4
219
Paper-Pick Errors - Tray 1
220
Preheater and Transfix Jams
220
Checking the Process and Media Path Drive
221
Media Skews Passing through the Paper Path
221
Operating System and Application Problems
222
Testing Communications Ports
222
Network Problems
224
Obtaining Serial Back Channel Trace
225
Print-Quality Troubleshooting
227
Print-Quality Problems Overview
228
Random Light Stripes
229
Predominate Light Stripes
231
Smudges or Smears
232
Printing too Light or too Dark
233
Not Printing
233
Color Is Uneven or Color Is Wrong
235
Streaks or Lines down the Print
237
Scratches or Marks Parallel to the Long Axis of Printing, Particularly with Film
239
White Portion of Print Is Colored
241
Fuzzy Text
243
Poor Primary Color Fills
245
Ghosting
246
Poor Small Text Resolution
248
Vertical Lines Appear Wavy
249
Oil Streaks on Print
250
Incomplete Image Transfer to Paper
252
Ink Smears on First Printed Side of Duplex Print
254
Repeating Print Defects on Print
255
White Stripes (Pinstripes)
256
Wrinkling
257
Image Is Offset or Cut-Off
258
Poor Ink Adhesion, Poor Image Durability
258
Analyzing Service Test Prints
259
Test Print Examples
259
Reverse Text
261
Big Bands Ohp
262
Ymckrgb Solid Fills
264
Drum Seal
264
Ohp Color Bands
266
Primary Solid Fills 10X
267
Cleaning Page
270
Adjustments and Calibrations
271
Adjustments
272
Wiper Alignment Procedure
272
Printer Component Homing Positions and Indicators
274
Wiper Assembly Positions
274
Homing the Head Tilt Gear
275
Homing the Process Gear Drive Train
278
Drum Maintenance
279
Printer Calibrations
280
Wiper Alignment
280
Jet Substitution Mode
280
Enabling Jet Substitution Mode (8400)
281
Enabling Jet Substitution Mode (8500/8550)
281
Disabling Jet Substitution Mode (8400)
282
Disabling Jet Substitution Mode (8500/8550)
282
Resetting NVRAM
282
Cleaning and Maintenance
283
Service Cleaning Maintenance Procedure
284
Cleaning
284
Media Jams
285
Pick Roller Cleaning Method
286
Maintenance
287
Maintenance Kit
287
Lubrication
288
Inspection
288
Service Parts Disassembly
289
Overview
290
Standard Orientation of the Printer
290
General Notes on Disassembly
291
Covers
292
Front Door (Tray 1) Assembly
293
Control Panel Cover
294
Front (Control) Panel
294
Right Side Cover
294
Left Side Cover
295
Exit Cover
295
Ink Loader Assembly and Door
296
Imaging
297
Y-Axis Belt, Y-Axis Tension Spring, and Y-Axis Motor Assembly
297
Replacement Notes
299
Printhead Assembly, Right and Left Printhead Restraints
300
Head Tilt Solenoid
306
X-Axis Bias Spring
307
Printhead Wiper
308
Replacement Note
309
Media Release Blade Carriage Assembly and Transfix Roller
310
Paper Preheater and Deskew Assembly
311
Duplex Roller
313
Transfix Load Module
314
Transfix Camshaft Assembly
319
Drum Maintenance Camshaft Assembly
320
Drum Maintenance Pivot Plate Assembly
321
Drum Assembly
322
Purge Pressure Pump
327
Paper Path
328
Exit Module Assembly
328
Paper Guides
329
Take Away Roller
332
Pick Assembly
333
Media Tray Lift Motor
335
Motors, Gears, Solenoids, Clutches, and Fans
336
Media Drive Gearbox with Two Clutches and Solenoid
336
Tray 1 Pick Solenoid
337
Preheater Lift Solenoid
338
Process Drive Motor and Gearbox
339
X-Axis Motor Assembly
341
Head Tilt Compound Gear
342
Electronics
343
Electronics Module
343
Wave Amp Board
344
I/O Board
345
Drum Heater Relay Board
346
NVRAM Replacement
347
DIMM Replacement
348
Hard Drive Replacement
349
Parts Lists
351
Serial Number Format
352
Using the Parts List
353
Covers
354
Imaging
356
Paper Path
358
Motors, Gears, Solenoids, Clutches, and Fans
360
Circuit Boards
362
Sensors and Flags (Actuators)
364
Xerox Supplies
366
Wiring Diagrams
371
Main Wiring Diagram
372
Main Wiring Diagram (Continued)
373
Right-Side Wiring Diagram
374
Right-Side Wiring Diagram (Continued)
375
Left-Side Wiring Diagram
376
Left-Side Wiring Diagram (Continued)
377
Inside Front Wiring Diagram
378
Inside Top Wiring Diagram
379
Inside Top - Printhead Wiring Diagram
380
Appendix
381
Menu Map (8400
381
Menu Map (8500/8550
381
Paper Weight Equivalence Table
381
Menu Map (8500/8550)
384
On-Site Printhead Troubleshooting Checklist (8400
388
On-Site Printhead Troubleshooting Checklist (8500/8550
393
Other manuals for Xerox Phaser 8400
Manual
14 pages
Quick Start Guide
6 pages
Reference Guide
210 pages
Quick Reference Guide
10 pages
Installation Guide
5 pages
5
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Xerox Phaser 8400 Specifications
General
Brand
Xerox
Model
Phaser 8400
Category
Printer
Language
English
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