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Confidential
3.11 Troubleshooting of the Control Panel
3.11.1 Nothing is displayed on the LCD
<User Check>
- Verify if the power switch is turned off.
3.11.2 The control panel does not work
<User Check>
- Check whether the function lock is not set.
Step
Cause
Remedy
1
AC cord failure
Replace the AC cord.
2
Connection between main
PCB and panel PCB
Connect the connector between the main
PCB ASSY and panel PCB ASSY correctly.
3
Connection between main
PCB and low-voltage power
supply PCB
Connect the connector between the main
PCB ASSY and low-voltage power supply
PCB ASSY correctly.
4
Power switch holder failure
Replace the power switch holder.
5
LCD or LCD unit failure
Replace the LCD or LCD unit.
6
Panel PCB failure
Replace the panel PCB ASSY.
7
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
8
Low-voltage power supply
PCB failure
Replace the low-voltage power supply PCB
ASSY.
9
Main PCB failure
Replace the main PCB ASSY.
Step
Cause
Remedy
1
Key sticking
Re-assemble the panel unit.
2
Connection between main
PCB and panel PCB
Connect the connector between the main
PCB ASSY and panel PCB ASSY correctly.
3
Fine adjustment of touch
panel misalignment (for
models with a touch panel)
Perform the fine adjustment of touch panel.
(
4
Panel PCB failure
Replace the panel PCB ASSY.
5
Main PCB failure
Replace the main PCB ASSY.
Содержание DCP-9055CDN
Страница 21: ...Confidential CHAPTER 1 SPECIFICATIONS ...
Страница 36: ...Confidential CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 46: ...2 8 Confidential ADF part A4 model Fig 2 6 Left side Right side Document feed path Face up ...
Страница 47: ...2 9 Confidential ADF part Legal model Fig 2 7 Left side Right side Document feed path Face up ...
Страница 178: ...Confidential CHAPTER 3 DISASSEMBLY AND ASSEMBLY ...
Страница 206: ...3 25 Confidential 8 DISASSEMBLY FLOW Disassembly Re Assembly second ...
Страница 207: ...3 26 Confidential Disassembly Re Assembly second 5 ...
Страница 270: ...3 89 Confidential 10 Disconnect the Connector from the ADF motor Fig 3 112 Drive frame ASSY ADF motor Connector ...
Страница 280: ...3 99 Confidential 3 Remove the LCD from the Back light module Fig 3 128 Back light module LCD 3a 3b ...
Страница 359: ...3 178 Confidential 3 Disconnect the Connector from the Waste toner sensor Fig 3 262 Connector Waste toner sensor ...
Страница 381: ...Confidential CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 397: ...Confidential CHAPTER 5 SERVICE FUNCTIONS ...
Страница 405: ...5 6 Confidential Black and white scanning First side Fig 5 1 ...
Страница 406: ...5 7 Confidential Black and white scanning Second side Fig 5 2 ...
Страница 407: ...5 8 Confidential Color scanning First side Fig 5 3 ...
Страница 408: ...5 9 Confidential Color scanning Second side Fig 5 4 ...
Страница 433: ...5 34 Confidential Cover page sample Fig 5 17 End page sample Fig 5 18 ...
Страница 440: ...5 41 Confidential Inter color position alignment adjustment chart Fig 5 22 ...
Страница 447: ...5 48 Confidential Fig 5 25 ...
Страница 450: ...5 51 Confidential Color test pattern Fig 5 27 MCYK Y C K M YCMK_ _A ...
Страница 470: ...Confidential CHAPTER 6 CIRCUIT DIAGRAMS WIRING DIAGRAM ...
Страница 472: ...6 1 Confidential 1 CIRCUIT DIAGRAMS High voltage Power Supply PCB Circuit Diagram 1 3 ...
Страница 473: ...6 2 Confidential High voltage Power Supply PCB Circuit Diagram 2 3 ...
Страница 474: ...6 3 Confidential High voltage Power Supply PCB Circuit Diagram 3 3 ...
Страница 475: ...6 4 Confidential Low voltage Power Supply PCB Circuit Diagram 100V ...
Страница 476: ...6 5 Confidential Low voltage Power Supply PCB Circuit Diagram 200V ...
Страница 477: ...6 6 Confidential NCU PCB Circuit Diagram U S A Canada ...
Страница 478: ...6 7 Confidential NCU PCB Circuit Diagram Europe Oceania ...
Страница 479: ...6 8 Confidential NCU PCB Circuit Diagram China Asia South Africa Gulf ...
Страница 481: ...Confidential CHAPTER 7 PERIODICAL MAINTENANCE ...
Страница 523: ...Confidential APPENDIX 1 SERIAL NUMBERING SYSTEM ...
Страница 527: ...Confidential APPENDIX 3 INSTALLING THE MAINTENANCE DRIVER ...
Страница 531: ...App 3 4 Confidential 10 Alert warning message appears click Continue Anyway to proceed ...