Xerox WorkCentre Pro 412 Service Manual page 213

Maintenance & Troubleshooting
Faulty CCD image quality
Normal image quality
Figure 1 Image quality examples
7-7-9 Document Continuously Jammed in the ADF Paper Path (WCP 412 Only)
Operational Groups:
All
Problem:
The ADF paper path becomes blocked and in some cases the paper path sensors become dislodged. This
creates a paper jam in the ADF when the next job is fed.
Cause:
When paper becomes jammed in the ADF paper path, it has been found that users will remove the paper
using a great deal of force in an incorrect fashion. This has caused small pieces of paper to be left in the
paper path or for the sensors to be dislodged and no longer function correctly.
Solution:
In some cases the customer is able to remove the paper blockage and the machine will function correctly.
In other cases an engineer has to be called out to re-seat the sensors in the ADF feed assembly or clear
the blockage. The corrective action is to advise the customer on the correct way to clear paper jams in the
printer and ADF. For further information the customer should be shown the WCP412 User Manual's trou-
bleshooting guide located on the User Manual CD-ROM supplied with the machine.
7-7-10 ADF Paper Feed Problem (WCP 412 Only)
Operational Groups:
All
Problem:
The ADF pick-up roller fails to engage the clutch and paper will not be drawn into the ADF paper path.
Cause:
The cause has been diagnosed as a problem, with some of the grease on the shaft migrating into the
clutch. This will prevent the clutch engaging the pick-up roller and feeding paper into the ADF paper path.
Solution:
The proposed solution involves cleaning the gear and clutch assembly. This procedure is described below.
WorkCentre Pro 412, FaxCentre F12 & 3/03 7-43
WorkCentre M15/M15i