CHAPTER 6 TROUBLESHOOTING
6-38
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.
How to clean the pressure roller
Clean the pressure roller as follows;
(1) Set three or more sheets of paper in the paper tray.
(2) Turn off the power switch of the printer.
(3) While holding down the
Go
switch, press
–
switch,
+
switch, and then
Set
switch. The
LCD display shows “TEST MENU”.
(4) Press
the
Set
switch and “SINGLE TEST PRINT” will appear on the LCD display.
(5) Press
the
+
switch and “REPEAT TEST PRINT” will appear on the LCD display.
(6) Press
the
Set
switch and “TEST PRINT NORMAL” will appear on the LCD display.
(7) Press
the
+
switch four times and “TEST PRINT WHITE” will appear on the LCD display.
(8) Press
the
Set
switch and release it immediately. A blank page is printed while cleaning
the pressure roller.
(9) Press
the
Job Cancel
switch after printing three or more pages to stop printing.
