CHAPTER 6 TROUBLESHOOTING
6-28
I-5
Dirt on the back of paper
Possible cause
Step
Check
Result
Remedy
Fixing unit dirty
1
Is the pressure roller dirty?
Is any other area in the printer
dirty?
Yes
Clean the pressure roller
referring to
the following
procedure
.
Dirt in the drum
unit
2
Is the transfer roller dirty?
Is the problem solved after
replacing the drum unit?
Yes
Replace the drum unit
No
Replace the high-voltage power
supply PCB.
NOTE:
•
This problem may disappear after printing approximately 10 pages of completely blank
sheets.
•
The dirt on the back of paper as shown at the right is
caused by toner on the star wheel hooks in the fixing
unit. This problem may disappear after printing a few
pages.
Fig. 6-6
How to clean the pressure roller
Clean the pressure roller as follows;
(1) Set three or more sheets of paper in the paper cassette.
(2) Open the front cover, and turn on the power switch while holding down the control panel
button.
(3) Release the panel button when the Drum LED is on.
(4) Close the front cover.
(5) Hold down the panel button until the Ready LED is on, then release the button. Three
patterns; grid, zip and solid black are printed.
(6) Turn off the power switch with the front cover closed.
(7) Set paper in the manual feed slot with the solid black side down.
(8) Turn on the power switch while holding down the control panel button.
(9) Release the panel button when the Drum LED is on.
(10) Press the panel button again and release it immediately. A page of test pattern is printed
while cleaning the pressure roller.
Summary of Contents for HL-1030
Page 51: ...CHAPTER 3 THEORY OF OPERATION 3 9 Fig 3 8 ...
Page 53: ...CHAPTER 3 THEORY OF OPERATION 3 11 Two 32 Mbits ROMs x 16 bit are fitted Fig 3 11 HL 1270N ...
Page 122: ...CHAPTER 5 PERIODIC MAINTENANCE 5 8 ...
Page 198: ...CODE UK4352000 B512040CIR 1 2 A 20 NAME Appendix 11 Main PCB Circuit Diagram HL 1030 1240 1 2 ...
Page 199: ...Appendix 12 Main PCB Circuit Diagram HL 1030 1240 2 2 CODE UK4352000 B512040CIR 2 2 A 21 NAME ...
Page 202: ...CODE UK4361000 B512049CIR A 24 NAME Appendix 15 Main PCB Circuit Diagram HL 1250 1270N 3 5 ...
Page 205: ...Appendix 18A Engine PCB Circuit Diagram OLD CODE UK4444000 B512059CIR A 27 NAME ...
Page 206: ...Appendix 18B Engine PCB Circuit Diagram NEW CODE UK4444000 B512059CIR A 28 NAME ...
Page 207: ...Appendix 19 Network Board Circuit Diagram HL 1270N CODE LJ8107000 B512058CIR A 29 NAME ...
Page 218: ...INDEX vi ...