2-90
Confidential
Paper jams in LT path
<User Check>
• Check that the paper is set in each LT correctly.
• Flip over the paper in each LT or rotate the paper 180°.
• Adjust each paper guide according to the paper size.
• Check that there is not too much paper set in each LT.
• Check that the thickness of the paper is 60 to 120 g/m
2
for paper tray 2 to 4.
• Flip through the paper and reset it in each LT.
• Install the latest main firmware.
Step Cause Remedy
1 Foreign object around an LT Remove the foreign object.
2
A paper dust cleaning roller
attachment failure
Reattach the appropriate paper dust cleaning
roller.
3
An LT paper feed actuator
coming off
Reattach the appropriate LT paper feed
actuator.
4
Registration front actuator
coming off
Reattach the registration front actuator.
5
Connection failure of an LT
paper feed sensor harness
Reconnect the appropriate LT paper feed
sensor harness.
6
Connection failure of an LT
release clutch harness
Reconnect the appropriate LT release clutch
harness.
7
Connection failure of an LT
control PCB harness
Reconnect the appropriate LT control PCB
harness.
8 An LT paper feed sensor failure Replace the appropriate LT paper feed sensor.
9 An LT release clutch failure Replace the appropriate LT release clutch.
10 Paper feed motor failure Replace the paper feed motor.
11 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
12
Damaged LT drive gear system
of the machine
Replace the main frame L ASSY.
13 Damaged fuser unit Replace the fuser unit.
14 Main PCB failure Replace the main PCB ASSY.