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Confidential
4.9.3 Main motor failure
4.9.4 Front cover open
Front cover opened
4.9.5 Back cover open
Back cover opened
Step Cause Remedy
1
Flat cable connection failure of the
main motor
Check the flat cable connection of the
main motor, and reconnect it.
2 Main motor failure Replace the main motor.
3
Low voltage power supply PCB
ASSY failure
Replace the low voltage power supply
PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
User Check
• Check if the front cover is closed certainly.
Step Cause Remedy
1
Harness connection failure of high
voltage power supply PCB ASSY
(Front cover sensor is mounted in
high voltage power supply PCB
ASSY.)
Check the harness connection of the high
voltage power supply PCB ASSY, and
reconnect it.
2
Part pressing the front cover sensor
is broken, which is provided at
inside of front cover
Replace the front cover ASSY.
3
Front cover sensor failure Check the registration front sensor and
registration rear sensor performance
following the procedure in "Operational
Check of Sensors" (Chapter 5).
If any problem occurs, replace the high
voltage power supply PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
User Check
• Check if the back cover is closed certainly.
• Install the duplex tray certainly.
Step Cause Remedy
1
Harness connection failure of paper
eject sensor PCB ASSY
Check the harness connection of the
paper eject sensor PCB ASSY, and
reconnect it.
2
Part pressing the back cover sensor
is broken, which is provided at
inside of back cover
Replace the back cover ASSY.
3
Part pressing the back cover sensor
is broken, which is provided at
inside of duplex tray
Replace the duplex tray.
4
Back cover sensor failure Replace the paper eject sensor PCB
ASSY.
5 Main PCB failure Replace the main PCB ASSY.
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