MPC 4500 power on jams

[Hunts_bear]

What could cause power on jams if the customer has an MPC 4500 with out a bridge unit? It had 75 power on jams in logging data but the last recorded jam is from OCT 20th.

[cosmic18]

black guide plate above reg roller will be full of paper dust causing faulse reading remove guide plate clean

[teebee1234]

Power on jams occur when a door is opened during operation, technically not a paper jam. I would check all covers, try giving a shake to each one while it's printing. Most likely too much play between the interlock and an actuator or a flaky interlock itself.

[Fearless V K]

Replace the right side door switch.

[Hunts_bear]

Fearless, when you say right side door switch do you mean the front door switch on the right side or the switch for the right side door?

[Fearless V K]

The switch for the right side door, the large door that opens to access the paper path, fuser, etc.

[Shadow1]

I have more problems with the finisher door interlock switches anyway - now, the MP4500 (no C) is going to be the right side door switches. Another possibility is the customer not clearing a jam completely - some machines register that as a power on jam when they close the door instead of continuing with the old jam code.

[serpico]

Hello,
Replace the switches (2) on the bridge unit

[teebee1234]

I guess you missed the part where he says there is no bridge unit. As a side note, I wish those that post their problems would follow up with what actually fixed the issue. Many do, but most don't.

[spaceman99]

Replace the 2 switches in the bridge unit. There is a RTB MOD out for this fault.