Bizhub C360 - Persistent Paper Jam (Jams 20cm before exit) - Sensors respond in Service Mode but issue remains
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Hi everyone,
I’m struggling with a Konica Minolta Bizhub C360 that keeps jamming. The paper travels almost the entire path but stops about 20-30cm before fully exiting the machine (it sticks out about 5-10cm from the exit tray).
What I've checked so far:
Sensor Monitor: In Service Mode, I’ve tracked the sensors. Specifically, Paper Exit, Fusing Loop Detect, and Sensor in front of tim. roller all show "0" in their rest state.
Manual Testing: When I manually actuate these sensors (moving the flags), they toggle between 0 and 1 on the screen. This suggests the photo-interrupters and wiring are electrically functional.
Fuser: I’ve already replaced the Fuser Pressure sensor (Roller Retraction), but it didn't solve the timing issue.
The Problem: Even though the sensors respond to manual movement, the machine still jams at the exit. It seems like the logic isn't "clearing" the jam or there is a timing mismatch I can't pin down.
The Jam Symptoms:
The paper reaches the exit rollers, passes the fuser, and then the machine just stops. There is no specific J-code displayed on the main screen, just the jam animation pointing to areas 2, 11, and 13.
Questions:
Is it normal for these sensors to be at "0" state at rest on this specific model?
Could a dirty/weak clutch or a specific gear (like the 29T in the fuser) cause this even if the sensors seem to "see" the paper?
Is there a specific exit sensor (PS3) that might be failing only under the heat/speed of actual operation?
Any advice from Konica techs would be greatly appreciated!