[Jamming] MP C4000 Paper Jamming

[Vioksrall]

An MP C4000 machine keeps jamming in both A3 and A4 trays. In jammed intermittently either in exit unit, fusing unit and registration area. I had replaced fusing unit, paper feed unit in both trays, feed clutch and guide plates but still the same problem. Firmware also is updated. Does anyone has the same experience like this? Thanks in advance.

[Counsel]

Re: MP C4000 Paper Jamming

Check the paper exit sensor there is bullitin on it, also IF you have a bridge unit sometimes the switches can go out, there was a bullitin about the firmware causing the bridge unit to cause jams but you mentioned you did firmware.