Brother MFC-7450

1-58
Confidential
■ Pickup function of paper tray does not work.
■ A new toner cannot be detected.
Step Cause Remedy
1
Link arm not operating smoothly or
catching.
Make sure correct movemet of the link arm.
2
Pickup roller holder ASSY not
operating smoothly or catching.
Make sure correct movement of the pickup
roller holder ASSY.
3 Roller holder ASSY failure Replace the roller holder ASSY.
4 Main motor failure Replace the main motor.
5 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1
New toner actuator does not
operate smoothly or is catching.
Make sure correct movement of the new
toner actuator.
2 New toner actuator damaged Replace the new toner actuator.
3 Main PCB failure Replace the main PCB ASSY.
4
New toner sensor harness ASSY
failure
Replace the new toner sensor harness
ASSY.