CHAPTER 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.
h
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.
Summary of Contents for HL HL-1060
Page 1: ...SERVICE MANUAL MODEL HL 1060 R LASER PRINTER ...
Page 24: ...CHAPTER II 8 1 3 5 DRAM Four 4Mbit DRAM x 8bit are used as the printer memory Fig 2 7 ...
Page 28: ...CHAPTER II 12 1 3 11 Engine I O Fig 2 13 shows the engine interface circuit Fig 2 13 ...
Page 96: ...Appendix 3 Main PCB Circuit Diagram 1 4 CODE UK3400000 B48K246CIR NAME V 3 ...
Page 97: ...Appendix 4 Main PCB Circuit Diagram 2 4 CODE UK3400000 B48K246CIR NAME V 4 ...
Page 98: ...Appendix 5 Main PCB Circuit Diagram 3 4 CODE UK3400000 B48K246CIR NAME V 5 ...
Page 99: ...Appendix 6 Main PCB Circuit Diagram 4 4 CODE UK3400000 B48K246CIR NAME V 6 ...
Page 100: ...Appendix 7 Driver PCB Circuit Diagram CODE UK3634000 B48K280CIR NAME V 7 ...
Page 105: ...Appendix 12 SR PCB Circuit Diagram CODE UK3653000 B48K284CIR NAME V 12 ...
