Iq11 Poor Fusing Rap; Iq12 Partial Blank Image (Not Periodic) Rap - Xerox WorkCentre M20 Service Manual

IQ11 Poor Fusing RAP

Use this RAP when the image is improperly fused.
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.
WARNING
Do not touch the fuser while it is hot.
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. Ensure that the paper tray settings match the paper or media size in the trays. Also
ensure the media is within specification, refer to GP 22 Paper and Media Specifications.
2. Refer to Wiring Diagram 3. Measure the voltage across the thermistor at CN7 on the PBA
main. The voltage measured should be 2.3V±5%.
3. Examine the ELA - HOU fuser assembly and ensure the thermistor is in good contact with
the heat roll and is clean. If necessary, go to the 10.1 Low Heat Error RAP or the 10.2
Open Heat Error RAP.
4. Ensure the machine is being operated in the correct environmental conditions. Refer to
GP 11 Machine Specifications.
5. If the machine has been standing in a low temperature environment for a long time, try to
bring the environment up to a warmer temperature before re-trying the machine.
Work Centre M20 Family

IQ12 Partial Blank Image (Not Periodic) RAP

Use this RAP when the printed sheets have blank areas, not forming a regular pattern.
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.
Perform the following:
1. 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.
March 2004
3-9
WARNING
Image Quality
IQ11, IQ12