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■ Error code 8903
The back cover sensor detected the open state when 2-sided printing is started.
(before the registration of printing in the engine)
Error code 8904
The back cover sensor detected the open state during 2-sided printing.
(after the registration of printing in the engine)
< User Check >
- Close the back cover.
■ Error code 8A01
The registration rear sensor detected that the fed paper was larger or smaller than the
specified size in 2-sided printing.
Error code 8A02
The registration rear sensor detected that the length of the paper is too long and it may hit
within the machine in 2-sided printing.
< User Check >
- Use the Letter to Legal size paper.
2-sided Disabled
Close the Back Cover of the machine.
2-sided Disabled
Close the Back Cover of the machine.
Step Cause Remedy
1 Connection failure of the back
cover sensor harness
Reconnect the back cover sensor
harness.
2 Back cover sensor installation
failure
Re-assemble the back cover sensor.
3 Breakage of boss that presses
the back cover sensor
Replace the back cover.
4 Back cover sensor failure Replace the back cover sensor.
5 Main PCB failure Replace the main PCB ASSY.
Size Error DX
Specify the correct paper and press Go.
2-sided Disabled
Load #S paper and press Go.
Step Cause Remedy
1 Registration rear actuator
caught on some position
Re-assemble the registration rear
actuator.
2 Registration rear sensor failure Replace the registration front/rear sensor
PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
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