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IV-8
I-4
All black
Possible cause
Step
Check
Result
Remedy
HV.GND
contacts
(Fig.4-5)
Corona failure
1
Is the corona wire of the drum
unit broken?
Yes
Replace the drum
unit.
2
Are the electric terminal
springs in the printer body and
the electrode on the bottom
face of the drum unit dirty?
Yes
Clean the terminals
in the printer and on
the drum.
➅
Harness
connection
3
Is the scanner unit connected
with the driver PCB correctly?
Yes
Check the harness
connection between
the scanner unit and
the driver PCB.
H.V. power
supply PCB
4
Is the problem solved after
H.V. power supply PCB
replaced?
Yes
Replace the H.V.
power supply PCB.
Ditto
5
Perform the same check as in
step 3.
No
Replace the panel
sensor PCB.
Main PCB
6
Is the problem solved after
main PCB replaced?
Yes
Replace the main
PCB.
Driver PCB
7
Is the problem solved after
driver PCB replaced?
Yes
Replace the driver
PCB.
Download Free Service Manual and Resetter Printer at http://printer1.blogspot.com
Содержание HL-1070
Страница 1: ...Download Free Service Manual and Resetter Printer at http printer1 blogspot com ...
Страница 20: ...II 4 Fig 2 4 Download Free Service Manual and Resetter Printer at http printer1 blogspot com ...
Страница 29: ...II 13 Fig 2 14 Download Free Service Manual and Resetter Printer at http printer1 blogspot com ...
Страница 96: ...CODE UK3958 000 B48K302 1CIR NAME A 3 Appendix 3 Main PCB Circuit Diagram 1 5 ...
Страница 97: ...CODE UK3958 000 B48K302 1CIR NAME A 4 Appendix 4 Main PCB Circuit Diagram 2 5 ...
Страница 98: ...CODE UK3958 000 B48K302 1CIR NAME A 5 Appendix 5 Main PCB Circuit Diagram 3 5 ...
Страница 99: ...CODE UK3958 000 B48K302 1CIR NAME A 6 Appendix 6 Main PCB Circuit Diagram 4 5 ...
Страница 100: ...Appendix 7 Main PCB Circuit Diagram 5 5 CODE UK3958 000 B48K302 1CIR NAME A 7 ...
Страница 101: ...Appendix 8 Driver PCB Circuit Diagram CODE UK3634000 B48K280CIR NAME A 8 ...
Страница 102: ...Appendix 9 Switch Panel Solenoid Bin Relay PCB Circuit Diagram CODE UK3635000 281 282 283 CIR NAME A 9 ...
Страница 106: ...Appendix 13 SR PCB Circuit Diagram CODE UK3653000 B48K284CIR NAME A 13 ...
Страница 107: ...Apr 98 54U011BE0 PARTS REFERENCE LIST MODEL HL 1070 R LASER PRINTER ...
Страница 120: ...1 3 2 1 MODEL HL 1070 54U S03 151 8 DRIVER PCB MODEL HL 1070 54U S03 200 201 9 POWER SUPPLY PCB 11 ...
Страница 241: ...APPENDIX A 11 HP LaserJet 6P EPSON FX 850 IBM Proprinter XL EPSON FX 850 PC 850 ...