2-68
Confidential
Error code 7B03
The MX 2bin 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 MX back cover correctly.
Step Cause Remedy
1
Foreign object in the rear of the
machine
Remove the foreign object.
2
MX flapper 1 or 2 attachment
failure
Reattach the MX flapper 1 or 2.
3
MX 2bin stack actuator
attachment failure
Reattach the MX 2bin stack actuator.
4
Connection failure of the MX
flapper 2 solenoid harness
Reconnect the MX flapper 2 solenoid harness.
5
Connection failure of the MX
2bin stack sensor harness
Reconnect the MX 2bin stack sensor harness.
6
Connection failure of the MX
relay PCB harness
Reconnect the MX relay PCB harness.
7 MX 2bin stack sensor failure Replace the MX 2bin stack sensor.
8
MX flapper 1 or 2 solenoid
failure
Replace the MX flapper 1 or 2 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.
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