2-115
Confidential
■
Completely blank
■
Image distortion
<User Check>
- Replace the belt unit with a new one.
- Replace the toner cartridge or drum unit with a new one.
Step
Cause
Remedy
1
Developing bias voltage
conduction failure
Clean the electrodes of the drum unit and
main body. (Refer to
and
2
Dirt on developer roller
electrode
Clean the electrodes of the developer roller
and main body. (Refer to
and
3
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
4
Laser unit failure
Replace the laser unit.
5
Main PCB failure
Replace the main PCB ASSY.
<User Check>
- Replace the belt unit with a new one.
Step
Cause
Remedy
1
Laser unit assembling failure
Re-assemble the laser unit.
2
Main PCB failure
Replace the main PCB ASSY.
Summary of Contents for DCP-9055CDN
Page 21: ...Confidential CHAPTER 1 SPECIFICATIONS ...
Page 36: ...Confidential CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING ...
Page 46: ...2 8 Confidential ADF part A4 model Fig 2 6 Left side Right side Document feed path Face up ...
Page 47: ...2 9 Confidential ADF part Legal model Fig 2 7 Left side Right side Document feed path Face up ...
Page 178: ...Confidential CHAPTER 3 DISASSEMBLY AND ASSEMBLY ...
Page 206: ...3 25 Confidential 8 DISASSEMBLY FLOW Disassembly Re Assembly second ...
Page 207: ...3 26 Confidential Disassembly Re Assembly second 5 ...
Page 381: ...Confidential CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 397: ...Confidential CHAPTER 5 SERVICE FUNCTIONS ...
Page 405: ...5 6 Confidential Black and white scanning First side Fig 5 1 ...
Page 406: ...5 7 Confidential Black and white scanning Second side Fig 5 2 ...
Page 407: ...5 8 Confidential Color scanning First side Fig 5 3 ...
Page 408: ...5 9 Confidential Color scanning Second side Fig 5 4 ...
Page 433: ...5 34 Confidential Cover page sample Fig 5 17 End page sample Fig 5 18 ...
Page 440: ...5 41 Confidential Inter color position alignment adjustment chart Fig 5 22 ...
Page 447: ...5 48 Confidential Fig 5 25 ...
Page 450: ...5 51 Confidential Color test pattern Fig 5 27 MCYK Y C K M YCMK_ _A ...
Page 470: ...Confidential CHAPTER 6 CIRCUIT DIAGRAMS WIRING DIAGRAM ...
Page 472: ...6 1 Confidential 1 CIRCUIT DIAGRAMS High voltage Power Supply PCB Circuit Diagram 1 3 ...
Page 473: ...6 2 Confidential High voltage Power Supply PCB Circuit Diagram 2 3 ...
Page 474: ...6 3 Confidential High voltage Power Supply PCB Circuit Diagram 3 3 ...
Page 475: ...6 4 Confidential Low voltage Power Supply PCB Circuit Diagram 100V ...
Page 476: ...6 5 Confidential Low voltage Power Supply PCB Circuit Diagram 200V ...
Page 477: ...6 6 Confidential NCU PCB Circuit Diagram U S A Canada ...
Page 478: ...6 7 Confidential NCU PCB Circuit Diagram Europe Oceania ...
Page 479: ...6 8 Confidential NCU PCB Circuit Diagram China Asia South Africa Gulf ...
Page 481: ...Confidential CHAPTER 7 PERIODICAL MAINTENANCE ...
Page 523: ...Confidential APPENDIX 1 SERIAL NUMBERING SYSTEM ...
Page 527: ...Confidential APPENDIX 3 INSTALLING THE MAINTENANCE DRIVER ...
Page 531: ...App 3 4 Confidential 10 Alert warning message appears click Continue Anyway to proceed ...