Xerox M20 - WorkCentre B/W Laser, Service Manual

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December 2006
3-20 WorkCentre M20, 4118, FaxCentre 2218 Family
IQ20, IQ21
Image Quality
IQ20 Poor Side Edge Registration RAP
Use this RAP when the printed image side edge registration is incorrect.
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.
Perform the following:
1. (M20F/2218) Remove the DADF, refer to REP 5.1. Check the DADF hinges for damage. If
necessary, install a new MEA unit - hinge assembly, PL 5.14 Item 11.
2. (4118 with ADF) Remove the ADF, refer to REP 5.2. Check the ADF hinges for damage.
If necessary, install a new MEA unit hinge PL 5.20 Item 8.
3. Check that the paper guides in all trays are correctly positioned.
4. Adjust the DADF or ADF side edge registration. Go to the relevant procedure:
• ADJ 5.1 DADF Side Edge Registration Adjustment (M20F/2218)
• ADJ 5.2 ADF Side Edge Registration Adjustment (4118)
IQ21 Spots or Marks RAP
Use this RAP when the printed image has spots or marks.
Procedure
Spots or marks on the printed image can be caused by waste toner contamination. Go to the
OF5 Waste Toner Contamination RAP.