3-21
Confidential
■
Error code 76
Rapid temperature rising failure (center thermistor)
Error code 78
Rapid temperature falling failure (center thermistor)
■
Error code 7A
No detection of main motor synchronous signal
■
Error code 7D
Dirt on corona wire (detect discharge error)
Print Unable 76
Turn the power off and then back on again.
Print Unable 78
Turn the power off and then back on again.
Step
Cause
Remedy
1
Fuser unit failure
Replace the fuser unit.
2
Main PCB failure
Replace the main PCB ASSY.
Print Unable 7A
See Troubleshooting and routine maintenance chapter in User's
Guide.
Step
Cause
Remedy
1
Motor failure
Replace the main motor.
2
Main PCB failure
Replace the main PCB ASSY.
Drum Error
Open the Front Cover and slide the blue tab across the Drum Unit
several times.
<User Check>
• Clean the corona wire in the drum unit.
• Replace the drum unit with a new one.
Step
Cause
Remedy
1
Dirt or dust on drum unit
electrodes
Clean the electrodes of the main body and
the drum unit. (
Refer to Fig. 3-3
2
Charge HVPS PCB failure
Replace the charge HVPS PCB ASSY.
3
Main PCB failure
Replace the main PCB ASSY.
Summary of Contents for DCP 8085DN
Page 13: ...CHAPTER 1 SPECIFICATIONS ...
Page 52: ...Confidential CHAPTER 2 THEORY OF OPERATION ...
Page 69: ...2 16 Confidential 3 3 Paper Feeding Fig 2 18 LT path DX path MP path Paper tray path ...
Page 89: ...CHAPTER 3 ERROR INDICATION AND TROUBLESHOOTING ...
Page 178: ...Confidential CHAPTER 4 PERIODICAL MAINTENANCE ...
Page 248: ...CHAPTER 5 DISASSEMBLY REASSEMBLY ...
Page 265: ...5 12 Confidential Fig 5 7 EM2 4 places Separation pad ASSY ...
Page 501: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 507: ...6 5 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Page 516: ...CHAPTER 7 SERVICE MODE ...
Page 525: ...7 7 Confidential For color scanning Fig 7 2 ...
Page 527: ...7 9 Confidential For white and black scanning Fig 7 3 ...
Page 528: ...7 10 Confidential For color scanning Fig 7 4 ...
Page 567: ...Confidential CHAPTER 8 CIRCUIT DIAGRAMS WIRING DIAGRAM ...
Page 569: ...8 1 Confidential 1 CIRCUIT DIAGRAMS High voltage Power Supply PCB Circuit Diagram Fig 8 1 ...
Page 570: ...8 2 Confidential LVPS PCB Circuit Diagram 230V Fig 8 2 ...
Page 571: ...8 3 Confidential LVPS PCB Circuit Diagram 115V Fig 8 3 ...