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Confidential
 Error code 8A01
The registration rear sensor detected that the paper fed was smaller or larger than the 
specified size in duplex printing mode.
 Error code 8C00
There is no paper set in the manual feed slot on the manual feed slot fix mode.
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.
Manual Feed
Load paper.
<User Check>
• Set paper in the manual feed slot.
Step Cause Remedy
1
Registration front actuator 
caught in some sections of the 
machine
Reattach the registration front actuator.
2
Connection failure of the 
registration rear sensor harness
Reconnect the registration front/rear sensor 
PCB harness.
3
Connection failure of the HVPS 
flat cable
Reconnect the HVPS flat cable.
4
HVPS flat cable breakage Replace the HVPS flat cable.
5
Registration rear sensor failure Replace the registration front/rear actuator 
holder ASSY.
6
High-voltage power supply PCB 
failure
Replace the high-voltage power supply PCB 
ASSY.
7
Main PCB failure Replace the main PCB ASSY.