Xerox M20 - WorkCentre B/W Laser, Service Manual

Page: 53 / 314

December 2006
2-7 WorkCentre M20, 4118, FaxCentre 2218 Family
6.1
Status Indicator RAPs
6.1 LSU Error RAP
The machine has detected that the LSU unit has not come to the ready state at the expected
time.
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
Avoid exposure to laser beam. Invisible laser radiation.
NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com-
monly recognised part names.
Refer to the following:
• (M20F) Wiring Diagram 3.
• (4118) Wiring Diagram 9.
• (2218) Wiring Diagram 14.
Perform the following:
1. Switch off the machine. Switch on the machine.
2. The CBF - harness; switch - micro, PL 4.17 Item 2, controls the +5V supply to the unit -
LSU. Enter GP 1 Engine Test Mode Entry. Use the sensor test to check the CBF - har-
ness; switch - micro. If necessary, install a new CBF - harness; switch - micro, PL 4.17
Item 2.
3. (M20F) Check the wiring between the unit - LSU and CN3 on the PBA main. If necessary,
install a CBF harness - LSU, PL 6.10 Item 2.
4. (4118) Check the wiring between the unit - LSU and CN4 on the PBA main. If necessary,
install a CBF harness - LSU, PL 6.10 Item 2.
5. (2218) Check the wiring between the unit - LSU and CN4 on the PBA main. If necessary,
install a CBF harness - LSU, PL 6.10 Item 2.
6. Enter GP 1 Engine Test Mode Entry. Use the LSU motor test to check the operation of the
LSU motor.
7. Install new components as necessary:
• Unit - LSU, PL 6.10 Item 1.
• PBA main (M20F), PL 1.10 Item 4.
• PBA main (4118), PL 1.15 Item 9.
• PBA main (2218), PL 1.20 Item 9.