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Confidential
Error code 8400
The eject sensor remains ON (paper pass detected) for more than the specified time even
after the registration rear sensor detected the end of paper pass.
Error code 8500
The T1 paper feed sensor detected that paper tray 1 was not set.
Jam Rear
<User Check>
• Remove the paper jammed in the rear section of the machine.
Step Cause Remedy
1
Foreign object in the rear of the
machine
Remove the foreign object.
2
Eject actuator caught in some
sections of the machine
Reattach the eject actuator.
3
Eject sensor failure Refer to "1.3.8 Check sensor operation
(function code: 32)" in Chapter 5 to check the
sensor operation. If the sensor operation is
faulty, replace the eject sensor PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
CAUTION:
• Do not use a sharp tool such as tweezers or screwdriver to remove the jammed paper.
No Tray
<User Check>
• Set paper tray 1 correctly.
Step Cause Remedy
1
T1 paper feed actuator caught
in some sections of the machine
Reattach the T1 paper feed actuator.
2
T1 paper feed sensor PCB
failure
Refer to "1.3.8 Check sensor operation
(function code: 32)" in Chapter 5 to check the
sensor operation. If the sensor operation is
faulty, replace the T1 paper feed sensor PCB
ASSY.
3
High-voltage power supply PCB
failure
Replace the high-voltage power supply PCB
ASSY.
4 Main PCB failure Replace the main PCB ASSY.
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