3.3 Image Quality Troubleshooting
WorkCentre Pro 423/428
3-23
CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING
C - 21
Residual image (ghost)
Copy sample
j0hn3024
Symptom
Residual image (ghost)
(Toner images incompletely cleaned from drum or heat roller and reproduced on next
copy.)
Cause
Corrective action
Drum (At 94mm intervals)
•
Poor cleaning of Drum
•
Replace
CRU.
Drum (At 94mm intervals)
•
Contamination, quality change
and deterioration of Drum
•
Replace
CRU.
Fuser (At 94mm intervals)
•
Contamination, quality change
and deterioration of
Heat/Pressure Roller
•
Clean or replace Heat/Pressure Roller.
Fuser (At 94mm intervals)
•
Faulty setting of Fuser
temperature
•
Check
NVM
setup
data.
(Diag: [20-100 to 106])
Toner (At 55mm intervals)
•
Mag
Roller
failure
•
Replace
CRU.
C - 22
Finger Mark
Copy sample
j0hn3025
Symptom
Finger Mark
(Represents copies with toner spilled on the lead and trail edges.)
Cause
Corrective action
Faulty DTS
•
Replace
DTS.
•
Replace
HVPS.
Deterioration of Toner
•
Replace
CRU.
Summary of Contents for WorkCentre Pro 423
Page 2: ......
Page 3: ...WorkCentre Pro 423 428 6HUYLFH 0DQXDO...
Page 6: ......
Page 8: ......
Page 9: ...INTRODUCTION...
Page 10: ......
Page 24: ...WorkCentre 423 428 03 02 INTRODUCTION 14 7 Translation of Warnings...
Page 25: ...CHAPTER 1 SERVICE CALL PROCEDURE...
Page 26: ......
Page 28: ...WorkCentre Pro 423 428 1 2 CHAPTER 1 SERVICE CALL PROCEDURE 03 02 1 1 Trimming...
Page 31: ...CHAPTER 2 TROUBLESHOOTING...
Page 32: ......
Page 76: ...WorkCentre Pro 423 428 2 44 CHAPTER 2 TROUBLESHOOTING 03 02 2 3 Level 2 Troubleshooting...
Page 243: ...CHAPTER 3 IMAGE QUALITY TROUBLESHOOTING...
Page 244: ......
Page 273: ...CHAPTER 4 DISASSEMBLY ASSEMBLY AND ADJUSTMENT...
Page 274: ......
Page 329: ...CHAPTER 5 PARTS LIST...
Page 330: ......
Page 415: ...03 02 5 2 Parts List WorkCentre Pro 423 428 5 85 CHAPTER 5 PARTS LIST...
Page 416: ...CHAPTER 6 GENERAL...
Page 417: ......
Page 456: ...CHAPTER 7 ELECTRICAL WIRING DIAGRAMS...
Page 457: ......
Page 476: ...CHAPTER 8 ACCESSORIES...
Page 477: ......
Page 535: ...WorkCentre Pro 423 428 8 58 CHAPTER 8 ACCESSORIES 03 02 8 22 Stamp Kit Red...
Page 536: ...CHAPTER 9 BSD Block Schematic Diagram...
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