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(I-13) Image distortion
Possible cause
Step
Laser unit
1
installation
Scanner LD
2
emission
failure
Scanner motor
rotation
failure
Scanner
3
connection
failure
(I-14) Faint print
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Possible cause
Step
Dirt on the
1
ADF glass or
document
glass
Machine
2
installation
Toner
3
cartridge
Scanner
4
window dirty
Laser unit
5
failure
Check
Is the laser unit secured to
the frame incorrectly?
(Check if there is any
play.)
Is the laser diode or the
scanner motor defective?
Is the scanner harness
connected properly?
(Check if it is coming
loose.)
Check
Is the ADF glass or
document glass dirt?
Is the machine placed
horizontally?
Does the problem happen
immediately after replacing
the toner cartridge with a
new one?
Is the scanner window
dirty?
Is the problem solved by
replacing the laser unit?
9-38
Remedy
Result
Yes
Secure the unit correctly and
tighten the screws.
Yes
Replace the laser unit.
No
Connect the harness correctly.
Remedy
Result
Yes
Clean the ADF glass or document
glass.
No
Place the machine on a flat
surface.
Yes
Remove and carefully shake the
toner cartridge horizontally.
Yes
Clean the scanner window with a
soft dry cloth.
Yes
Replace the laser unit.
Confidential
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Troubleshooting
