Xerox WorkCentre 7655

This RAP troubleshoots hardware-related causes of output images showing image density lower than specification.

Initial Actions

• Perform IQ1 IOT Image Quality Entry RAP first
• Clean the ROS windows
• Replace the paper in use with fresh, dry paper of the correct specification
• Check the 2nd BTR Cam for proper operation

Procedure

	Procedure	Yes	No
1	The problem occurs in both copy and print mode.	4	2
2	The problem occurs in the copy mode only.	3	Go to Call Flow
3	Go to BSD 5.15 - Copy/Scan Image Input Processing (1 of 3). Check that the connectors on the IIT/IPS PWB are seated properly and the wires are undamaged. If the problem continues, replace the IIT/IPS (PL 13.8). If the problem persists, replace the Lens Assembly (PL 13.6).
4	Perform MAX Setup ADJ 9.1. The problem is still present.	5	Return to Call Flow.
5	Enter dC612. Make prints of Test Pattern 17. The Defect is a single color.	8	6
6	Go to dC612. Print Test Pattern 17. Open the Front Door approximately seven seconds into the job. Extend the IBT. There is a good toner image on the Transfer Belt.		7
7	Go to the IQ22 Developer Bias RAP to check the Developer Bias Circuit. If the problem continues, go to the IQ20 2nd BTR Checkout RAP to check the 2st BTR Bias. If the problem persists, check the ROS for contamination or misalignment.
8	Check the 2nd BTR for damage or an incorrect installation. Go to the IQ20 2nd BTR Checkout RAP to check the 2nd BTR. The problem reoccurs.	9	Go to Call Flow
9	Replace the 2nd BTR Assembly (PL 7.8). If the problem continue, replace the Transfer Belt (PL 7.3).
10	Swap the affected Drum Cartridge with an adjacent cartridge. Print Test Pattern 12. The defect moved to the new color.	Replace the Drum Cartridge (PL 6.1).	11
11	Go to IQ22 Developer Bias RAP. Check the Developer Bias. If the problem continues, go to IQ21 1st BTR Checkout RAP, to check the 1st BTR Bias. If the problem persists, replace the Developer for the affected color (PL 6.6).