2-67
Confidential
Error code 7B01
The MX jam lower sensor does not detect paper pass within the specified time after the eject
sensor detected paper pass.
Error code 7B02
The MX 1bin stack sensor does not detect paper pass within the specified time after the MX
jam lower sensor detected paper pass.
<User Check>
• Remove the jammed paper.
• Close the back cover correctly.
Step Cause Remedy
1
Foreign object in the rear of the
machine
Remove the foreign object.
2 MX flapper attachment failure Reattach the MX flapper.
3
Connection failure of the MX
jam lower sensor harness
Reconnect the MX jam lower sensor harness.
4
Connection failure of the MX
motor harness
Reconnect the MX motor harness.
5 MX switching solenoid failure Replace the MX switching solenoid.
6 MX motor failure Replace the MX motor.
7 MX control PCB failure Replace the MX control PCB ASSY.
8 Main PCB failure Replace the main PCB ASSY.
<User Check>
• Remove the jammed paper.
• Close the MX back cover correctly.
Step Cause Remedy
1
Foreign object in the rear of the
machine
Remove the foreign object.
2 MX flapper 1 attachment failure Reattach the MX flapper 1.
3
MX 1bin stack actuator
attachment failure
Reattach the MX 1bin stack actuator.
4
Connection failure of the MX
flapper 1 solenoid harness
Reconnect the MX flapper 1 solenoid harness.
5
Connection failure of the MX
1bin stack sensor harness
Reconnect the MX 1bin stack sensor harness.
6
Connection failure of the MX
relay PCB harness
Reconnect the MX relay PCB harness.
7 MX 1bin stack sensor failure Replace the MX 1bin stack sensor.
8 MX flapper 1 solenoid failure Replace the MX flapper 1 solenoid.
9 MX relay PCB failure Replace the MX relay PCB ASSY.
10 MX control PCB failure Replace the MX control PCB ASSY.
11 Main PCB failure Replace the main PCB ASSY.