2-47
Confidential
Error code 8903
The back cover/duplex tray sensor detected that the cover was open when duplex printing is
started. (Before registering printing data to engine)
Error code 8904
The back cover/duplex tray sensor detected that the cover was open during duplex printing.
(After registering printing data to engine)
Error code 8A01
The registration rear sensor detected that the paper fed was smaller or larger than the
specified size in duplex printing mode.
2-sided Disabled
Close the Back Cover of the machine.
2-sided Disabled
Close the Back Cover of the machine.
<User Check>
• Close the back cover correctly.
Step
Cause
Remedy
1
Back cover/duplex tray sensor
attachment failure
Reattach the back cover/duplex tray sensor.
2
Boss to push the back cover/
duplex tray sensor is broken.
Replace the back cover.
3
Back cover/duplex tray sensor
failure
Replace the eject sensor PCB ASSY.
4
Main PCB failure
Replace the main PCB ASSY.
Size Error DX
Specify the correct paper.
<User Check>
• Use appropriate paper (Letter to Legal).
Step
Cause
Remedy
1
Registration rear actuator
caught in some sections of the
machine
Reattach the registration rear actuator.
2
Registration rear sensor failure Replace the registration front/rear actuator
holder ASSY.
3
Main PCB failure
Replace the main PCB ASSY.