Iq5 Vertical White Lines Rap; Iq6 Light Image Rap - Xerox WorkCentre M20 Service Manual

IQ5 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 - OPC unit set, PL 9.10 Item
1. Ensure there are no obstructions that block the unit - LSU from imaging the ELA - OPC
unit set.
2. Go to GP 1. Engine Test Mode Entry. Perform the Toner State test. 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.
Work Centre M20 Family

IQ6 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. Go to GP 1. Engine Test Mode Entry. Perform the Toner State test. If necessary, install a
new ELA - toner unit set, PL 9.10 Item 2.
3. Examine the ELA - toner unit set, PL 9.10 Item 2 and the ELA - OPC unit set, PL 9.10
Item 1 and ensure they are free from all packing or sealing material.
4. Go to GP 6, Maintenance, and perform the Adjust Shading procedure.
5. 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.
6. Refer to Wiring Diagram 1. Go to GP 1 Engine Test Mode Entry. Perform test number 5 to
check the MHV ADC and THV ADC read values. As necessary perform the following:
• Check the contact springs supplying the voltages to the ELA - OPC unit set and the
wiring to the SMPS + HVPS.
• Install a new ELA - OPC unit set, PL 9.10 Item 1.
March 2004
3-5
Figure 1 Light image
WARNING
Image Quality
IQ5, IQ6