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HL-5130/5140/5150D/5170DN SERVICE MANUAL
6-37
I-16 Black
spots
Possible cause
Step
Check
Result
Remedy
Ground
contacts
Drum unit
1
Are the spots at 94mm
intervals?
(The problem is not solved
after printing a few pages.)
Yes
1) If toner or glue
remains stuck, wipe it
off gently with a
cotton swab. (Refer
to
NOTE
in the
previous page.)
2) If the photosensitive
drum is scratched or
deteriorated
(exposed), replace
the drum unit.
Drum
connection
failure
2
Is the contact between the
drum unit and printer body
connected correctly?
No
Clean contact electrode
both on the drum unit
and in the printer body.
(8)
Fixing unit
3
Are the spots at 79mm
intervals?
(The problem is not solved
after printing a few pages.)
Yes
1) Check and clean the
heat roller with a
cloth dampened with
alcohol.
2) Replace the fixing
unit.
High-voltage
power supply
PCB failure
4
Is the problem solved after
replacing the high-voltage
power supply PCB?
Yes
Replace the high-
voltage power supply
PCB.
User Check
(1) If the problem is not solved after printing a few pages, the drum unit may have
glue from label stock on the photosensitive drum surface. Refer to Step 1 in the
table below and
NOTE
in the previous page.
(2) The drum unit may be damaged. Install a new drum unit.
Содержание HL-5130
Страница 114: ...HL 5130 5140 5150D 5150DN Service Manual 4 13 24 Remove the paper rear guide Fig 4 20 Paper tray Paper rear guide 2 1 1 ...
Страница 271: ...APPENDIX A 9 Appendix 9 Engine PCB Circuit Diagram 1 2 NAME CODE B512153CIR 1 2 LJ923001 A 9 ...
Страница 272: ...APPENDIX A 10 Appendix 10 Engine PCB Circuit Diagram 2 2 NAME CODE B512153CIR 2 2 LJ923001 A 10 ...
Страница 273: ...APPENDIX A 11 Appendix 11 Low voltage Power Supply PCB Circuit Diagram 120V NAME Low voltage PS Circuit 120V A 11 ...
Страница 274: ...APPENDIX A 12 Appendix 12 Low voltage Power Supply PCB Circuit Diagram 230V NAME Low voltage PS Circuit 230V A 12 ...
Страница 275: ...APPENDIX A 13 Appendix 13 High voltage Power Supply PCB Circuit Diagram NAME High voltage PS Circuit A 13 ...