CHAPTER IV -6
I-2
Dark
Possible cause
Step
Check
Result
Remedy
HV.GND
contacts
(Fig.4-5)
Density dial
1
Is the density dial at the center
click position?
No
Set it to the center
click position or
reasonable position.
Corona failure
(soiled wire)
2
Is the corona wire dirty?
Yes
Clean the corona wire
by using the wire
cleaner.
j
Corona failure
(contact failure)
3
Are the corona electrodes
between the printer body and
drum unit dirty?
No
Clean both electrodes.
h
Drum unit failure
4
Is the problem solved when the
drum unit is replaced?
Yes
Replace the drum unit
with a new one.
H.V. power
supply PCB
5
Are there any disconnected
connectors?
No
Replace the H.V.
power supply.
Main PCB
6
Are there any disconnected
connectors?
No
Replace the main
PCB.
Driver PCB
7
Are there any disconnected
connectors?
No
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 ...
