3-16
Confidential
■ Error code 56
Back cover opened
■ Error code 57
Paper jam (Duplex tray)
Cover is Open
Close the Fuser Cover which can be found behind the Back Cover up
the machine.
User Check
• Close the back cover.
• Install the DX unit.
Step Cause Remedy
1
Harness connection failure of relay
rear PCB ASSY.
Check the harness connection of the relay
rear PCB ASSY and reconnect it.
2 Relay rear PCB ASSY failure Replace the relay rear PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
Jam Duplex
Pull out the Duplex Tray at the back of the machine and remove the
jammed paper.
Step Cause Remedy
1 DX feed ASSY failure Replace the X feed ASSY.
2 Main PCB failure Replace the main PCB ASSY.
3 Plate gear damaged Replace the main frame L unit.
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