Originally Posted by
Prints Charming
I believe the problem could be one of these.
1. The Main Finisher Controller PCB. You replaced the Saddle Controller PCB which is unrelated and does not communicate with the transport unit MXRB20 or your shop MXRB11. The Transport Unit is powered and controlled by the finisher Main Controller PCB. An earth or timing problem within the controller will cause an issue that can be replicated on the same job or counter. Ensure the bottom metal rail is fitted to help with earthing. The Main controller has had a few part updates over time.
2. The PDPPD2 sensor spring is weak. After running several sheets, the timing becomes incorrect due to the poor sensor return speed. Add an extra turn to the spring to make it faster response timing.
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