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Sound like 3way unit ( upper right door ) problem , no power or short circuit

In panic mode , my problem gone n never comeback by clear Mncon / option / mmi

I think you must cek JAM code , not error code

In my case , customer used after market toner .... when i replace with genuine toner , problem gone

When used after market toner (black ) error 020-491 generated ... I supply ( manual ) genue toner to Dev unit n problem clear

1. Set fix temp to 1 or 2 ....2. Use fuser oil ( silicon oil ) not grease

I used cheap metal polisher - brasso , maybe canon not recommended but very powerful

Replace bearing lower (press) roll

I ever have similar problem in ir 2270 .. . Solved with replace main board

Err 001 sub 002 about resistance subthermistor ... short or dc board misread the resistance from subthermistor

Fix e 310 !!!!
Replace DC board

No tolerance for intolerace

- You must clearing drum area ( blade , corotron , dev unit )
- Rotate position your broken drum n try make some copy ... & see if something wrong

Hello Lee ... im ex Xerox CE n now stay in Batam
Are u have sm dc 5065 ? hehe