This code means the paper is not getting to the fuser entrance sensor, the sensor is located in the PTR assy and the complete assy was replaced.
The symptoms are the paper buckles but does not pass the registration sensor. If I look at the reg sensor in input mode, the sensor is off, then when the paper stops, the sensor is on. I then switch to output mode and turn on the reg motor, paper goes all the way thru to the fuser section, then I look at the reg sensor and it is off. This jam happens sometimes on single copy sometimes on 2 copies in multicopy. And the scenario is always the same.
I am thinking a board, but which one, as the motor and sensor always work in test mode.
The reg sw and the entrance sw are on the BCU and the reg motor is on the DRB, but could it be the contoller? Inputs welcome.
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