Ricoh MP 7503SP Field Service Manual page 792

4. Replacement and Adjustment
3. Disconnect the rear end of the machine, and then pull it out.
Tray 1, 2, 3 PFU
The remaining steps for PFU removal are basically the same for all PFUs. Each PFU has three connectors
and one lock screw at the front.
1. Free the harnesses in front of the PFU that you want to remove.
2. Disconnect the PFU.
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