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3-53
Confidential
■
All black
Step
Cause
Check
Result
Remedy
1
Corona wire
failure
Are the electrodes on
the drum unit and
machine body dirty?
Yes
Clean both electrodes.
)
2
Is the corona wire
damaged?
Yes
Replace the drum unit.
3
Scanner harness
of the laser unit
connection
failure
Is the scanner harness
of the laser unit
connected securely?
No
Reconnect the scanner
harness of the laser unit.
4
FG harness
ASSY connection
failure
Is the FG harness ASSY
between the laser unit
and main PCB ASSY
connected securely?
No
Reconnect the FG harness
ASSY between the laser
unit and main PCB ASSY
securely.
5
HVPS PCB
failure
Is the problem solved
after replacing the
HVPS PCB ASSY?
Yes
Replace the HVPS PCB
ASSY.
6
Main PCB failure Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
7
Laser unit failure
Is the problem solved
after replacing the laser
unit?
Yes
Replace the laser unit.
Содержание DCP 8085DN
Страница 13: ...CHAPTER 1 SPECIFICATIONS ...
Страница 52: ...Confidential CHAPTER 2 THEORY OF OPERATION ...
Страница 69: ...2 16 Confidential 3 3 Paper Feeding Fig 2 18 LT path DX path MP path Paper tray path ...
Страница 89: ...CHAPTER 3 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 178: ...Confidential CHAPTER 4 PERIODICAL MAINTENANCE ...
Страница 204: ...4 25 Confidential 23 Secure the Fuser unit with the pan B M4x20 Taptite screw Fig 4 37 Taptite pan B M4x20 Fuser unit ...
Страница 248: ...CHAPTER 5 DISASSEMBLY REASSEMBLY ...
Страница 265: ...5 12 Confidential Fig 5 7 EM2 4 places Separation pad ASSY ...
Страница 291: ...5 38 Confidential 38 Driver PCB Battery CIS model Main PCB Battery harness Drive PCB Battery Driver harness ...
Страница 400: ...5 147 Confidential 9 11 3 Printed Rubber Key 1 Remove the Printed rubber key Fig 5 170 Printed rubber key Panel cover ...
Страница 452: ...5 199 Confidential 9 33 Thermistor ASSY 1 Remove the Thermistor ASSY from the Frame L Fig 5 242 Frame L Thermistor ASSY ...
Страница 501: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 507: ...6 5 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Страница 516: ...CHAPTER 7 SERVICE MODE ...
Страница 525: ...7 7 Confidential For color scanning Fig 7 2 ...
Страница 527: ...7 9 Confidential For white and black scanning Fig 7 3 ...
Страница 528: ...7 10 Confidential For color scanning Fig 7 4 ...
Страница 567: ...Confidential CHAPTER 8 CIRCUIT DIAGRAMS WIRING DIAGRAM ...
Страница 569: ...8 1 Confidential 1 CIRCUIT DIAGRAMS High voltage Power Supply PCB Circuit Diagram Fig 8 1 ...
Страница 570: ...8 2 Confidential LVPS PCB Circuit Diagram 230V Fig 8 2 ...
Страница 571: ...8 3 Confidential LVPS PCB Circuit Diagram 115V Fig 8 3 ...