Brother IntelliFax-3550 Service Manual page 152

Trouble
(9) Faulty image registration
(Leading edge of image starts
too late on paper)
(10) Image distortion or improper
image alignment
Action to be taken
At the printer side
• Instruct the user not to load paper exceeding the limit
mark on the multi-purpose sheet feeder.
• Instruct the user to use the recommended types of paper.
• Replace the multi-purpose sheet feeder.
• Replace the gear drive unit.
In communications
Check the following components:
- Error code displayed. (Refer to Section 1, "ERROR
INDICATION" in this chapter.)
- NCU PCB
- Main PCB
At the scanner
Check the following components:
- Separator roller and its related sections
- Document feed rollers and their related gears
- Scanner motor and its harness
- Main PCB
At the printer side
• Check that the laser unit is secured with the screws
without looseness.
• Check the connection of the polygon motor flat cable on
the relay PCB.
• Replace the laser unit.
VI – 18