Lsu Error Rap; Door Open Rap - Xerox WorkCentre M20 Service Manual

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 Wiring Diagram 3. Perform the following:
1. Switch off the machine. Switch on the machine.
2. The CBF - harness; switch - micro, PL 4.15 Item 20, 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 and install a new part as necessary.
3. If the fault persists, check the CBF harness - LSU, PL 6.10 Item 2. Repair or install a new
part as necessary.
4. Enter GP 1 Engine Test Mode Entry. Use the LSU motor test to check the operation of the
LSU motor.
5. Install a new unit - LSU, PL 6.10 Item 1.
6. If necessary, install a new PBA main, PL 1.10 Item 9.
Work Centre M20 Family

8.1 Door Open RAP

The machine has detected that the right hand side cover is open. When the cover is open,
there is no +5V supply to the LSU laser unit and no +24V supply to the main motor, the LSU
laser unit motor or the HVPS.
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.
Refer to Wiring Diagram 4. Perform the following:
1. Close the right hand cover.
2. Enter GP 1 Engine Test Mode Entry. Use the sensor test to check the CBF - harness;
switch - micro.
3. If necessary, install new components
• CBF - harness; switch - micro, PL 4.15 Item 20.
• PBA main, PL 1.10 Item 9.
March 2004
2-5
WARNING
Status Indicator RAPs
6.1, 8.1