3-39
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.
(Refer to
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 HL 5370DW
Страница 12: ...CHAPTER 1 SPECIFICATIONS ...
Страница 32: ...Confidential CHAPTER 2 THEORY OF OPERATION ...
Страница 57: ...Confidential CHAPTER 3 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 109: ...Confidential CHAPTER 4 PERIODIC MAINTENANCE ...
Страница 129: ...4 19 Confidential 14 Secure the Fuser unit with the pan B M4x20 Taptite screw Fig 4 27 Taptite pan B M4x20 Fuser unit ...
Страница 145: ...CHAPTER 5 DISASSEMBLY REASSEMBLY ...
Страница 153: ...5 6 Confidential Fig 5 3 EM D110 4 places Separation pad ASSY ...
Страница 154: ...5 7 Confidential 5 GEAR LAYOUT DRAWING Fig 5 4 ...
Страница 187: ...5 40 Confidential 2 Remove the SW key B from the Top cover printed ASSY Fig 5 41 SW key B Top cover printed ASSY ...
Страница 200: ...5 53 Confidential 8 13 Main Shield Plate ASSY 1 Remove the Insulation sheet Fig 5 63 Insulation sheet Frame L ...
Страница 212: ...5 65 Confidential 8 24 Gear 17 20 23 1 Remove the Gear 23 Fig 5 84 2 Remove the Gear 20 Fig 5 85 ...
Страница 213: ...5 66 Confidential 3 Remove the Gear 17 black Fig 5 86 4 Remove the Gear 17 white Fig 5 87 ...
Страница 261: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 276: ...Confidential CHAPTER 7 SERVICE MODE ...
Страница 308: ...App 1 1 Confidential FIRMWARE SWITCHES WSW There is not function of the firmware switch in this machine ...