Iq6 Vertical White Lines Rap; Iq7 Light Image Rap - Xerox WorkCentre M20 Service Manual

IQ6 Vertical White Lines RAP

Use this RAP when there are white lines along the process direction, as shown in Figure 1.
Figure 1 Vertical white lines
Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com-
monly recognised part names.
1. Remove the ELA - toner unit set, PL 9.10 Item 2 and the ELA Unit - OPC drum set, PL
9.10 Item 1. Ensure there are no obstructions that block the unit - LSU from imaging the
ELA Unit - OPC drum set.
2. Go to GP 1. Engine Test Mode Entry. Perform the Toner State test (test 4). If necessary,
install a new ELA - toner unit set, PL 9.10 Item 2.
3. Refer to REP 6.1. Lift out the unit - LSU. Clean the unit - LSU window using a clean, lint-
free cloth. If necessary, install a new unit - LSU, PL 6.10 Item 1.
WorkCentre M20, 4118, FaxCentre 2218 Family

IQ7 Light Image RAP

Use this RAP when the machine produces light images in all modes, as shown in Figure 1.
Procedure
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com-
monly recognised part names.
NOTE: For solid print area specifications, refer to IQS 1 Solid Area Density.
Perform the following:
1. Ensure that the paper tray settings match the paper or media size in the trays.
2. Ensure that the scanner lock, PL 14.11 Item 20 is completely unlocked.
3. Go to GP 1. Engine Test Mode Entry. Perform the Toner State test (test 4). If necessary,
install a new ELA - toner unit set, PL 9.10 Item 2.
4. Examine the ELA - toner unit set, PL 9.10 Item 2 and the ELA Unit - OPC drum set, PL
9.10 Item 1. Ensure they are free from all packing or sealing material.
5. Go to GP 3, Service Mode Entry. Scroll to System Admin Tools/Maintenance. Perform the
Adjust Shading procedure. If the shading test fails, install new components as necessary:
NOTE: Refer to GP 6 Maintenance for additional information about the shading test.
• ELA HOU - CCD module, PL 14.11 Item 16.
• CBF signal - CCD FFC, PL 14.11 Item 17.
• ELA HOU - scanner assembly, PL 14.10 Item 1.
December 2006
3-11
Figure 1 Light image
WARNING
Image Quality
IQ6, IQ7