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■ Image distortion
Step Cause Check
Result
Remedy
1
Laser unit not
assembled
correctly
Is the laser unit
assembled into the
machine securely?
(Check if there is no
gap.)
Ye s
Assemble the laser unit
correctly and secure the
screw.
2
Incorrect
radiation angle of
scanner diode of
laser unit.
Scanner motor
rotation failure
Is the problem solved
after replacing the laser
unit?
Ye s
Replace the laser unit.
3
Main PCB failure Is the problem solved
after replacing the main
PCB ASSY?
Ye s
Replace the main PCB
ASSY.