2-69
Confidential
Error code 7B04
The MX 3bin stack sensor does not detect paper pass within the specified time after the MX
jam upper 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 3 attachment failure Reattach the MX flapper 3.
3
MX 3bin stack actuator
attachment failure
Reattach the MX 3bin stack actuator.
4
Connection failure of the MX
flapper 3 solenoid harness
Reconnect the MX flapper 3 solenoid harness.
5
Connection failure of the MX
3bin stack sensor harness
Reconnect the MX 3bin stack sensor harness.
6
Connection failure of the MX
relay PCB harness
Reconnect the MX relay PCB harness.
7 MX 3bin stack sensor failure Replace the MX 3bin stack sensor.
8 MX flapper 3 solenoid failure Replace the MX flapper 3 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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