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2-1
Confidential
1.
INTRODUCTION
Troubleshooting is the countermeasure procedures that the service personnel should follow if
an error or malfunction occurs with the machine. It is impossible to anticipate all of the
possible troubles which may occur in future and determine the troubleshooting procedures, so
this chapter covers some sample troubles. However, those samples will help the service
personnel pinpoint and repair other defective elements.
1.1 Precautions
Be sure to observe and follow all the precautions to prevent any secondary problems from
happening during troubleshooting.
(1) Always turn off the power and unplug the power cable before removing any covers or
PCBs, adjusting the machine and so on. If you need to take voltage measurements with
the power switched on, take the greatest of care not to receive an electric shock.
(2) When connecting or disconnecting cable connectors, make sure that you hold the
connector body and not the cables.
(3) Static electricity charged in your body may damage electronic parts.
Before handling the PCBs, touch a metal portion of the machine to discharge static
electricity charged in your body. When transporting PCBs, be sure to wrap them in
conductive sheets.
When replacing the PCBs, put on a grounding wrist band and perform the job on a static
mat. Also take care not to touch the conductor sections on the flat cables.
(4) Follow the warning by all means.
(5) Verify again that the repaired portion works properly.
WARNING
The fuser unit becomes extremely hot during operation. Wait until it has cooled down
sufficiently before replacing consumable items. DO NOT remove or damage the
caution label located on or around the fuser.
WARNING
DO NOT
use flammable substances, any type of spray or any organic solvent/liquids
contains alcohol or ammonia to clean the inside or outside of the machine. Doing this
may cause a fire or electrical shock.
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 ...