Xerox WorkCentre 7655

This RAP is used to troubleshoot extremely light or white parts of the image. These defects appear over an extensive area in this process direction.

Initial Actions

• Check the Fuser for damage and contamination.
• Ensure that the Platen Glass is clean and without damage.

Procedure

	Procedure	Yes	No
1	The problem occurs in both Copy mode and Print mode.	6	2
2	The problem only occurs in Copy mode.	3	Go to Call Flow.
3	Go to BSD 5.15 - Copy/Scan Image Input Processing (1 of 3). Check that the IIT/IPS PWB connectors are fully seated and free from damage. Turn the power OFF and ON. The defect reoccurs.	4	Go to Call Flow.
4	Check the mirrors on the Full Rate and Half Rate Carriages for alignment and contamination. The mirrors are OK.	5	Clean and/or reposition the mirrors as required.
5	Replace the IIT/IPS PWB (PL 13.8). If the problem continues, replace the Lens Assembly (PL 13.6).
6	Enter dC612. Make a print of Test Pattern 10. Open the Front Door about seven seconds into the Job. Extend the IBT Drawer. The image on the Belt is defect free.	7	Check the following: • Check the IBT Belt for damage and/or contamination • Ensure that there is nothing in contact with the belt. Clean or replace as required • Check the Developer Housings and Drum Cartridges for toner clumping, damage and contamination • Go to IQ21 1st BTR Checkout RAP to check the 1st BTR Bias • Check the ROS Window for damage or contamination and that the connectors are fully seated. Clean and/or replace as required (PL 5.1)
7	Check the IBT Cleaner Assembly; check for toner buildup on the top side of the Cleaner Blade that contacts the IBT Belt. Replace the IBT Cleaner Assembly as required (PL 7.3). The defect is still present.	8	Go to Call Flow.
8	Replace the MCU PWB (PL 11.1). The defect is still present.	9	Go to Call Flow.
9	Replace the CCM PWB (PL 11.7). The defect is still present.	10	Go to Call Flow.
10	Check the 2nd BTR for damage and/or contamination. The 2nd BTR is OK.	11	Replace the 2nd BTR (PL 7.8).
11	Go to BSD 9.26 - 2nd Transfer and Cleaning (1 of 3) and check that the connectors on the 2nd BTR HVPS are fully seated and check the wires for damage. The defect is still present.	12	Go to Call Flow.
12	Replace the ROS Unit (C, K) or ROS Unit (Y, M) (PL 5.1). If the defect is still present, replace the 2nd BTR HVPS (PL 11.3). I If the problem continues, replace the MCU PWB (PL 11.1). If the problem persists, replace the CCM PWB (PL 11.7).