Bypass Jam Rap; Duplex Jam Rap - Xerox WorkCentre M20 Service Manual

8.2 Bypass Jam RAP

The machine has detected a failure to feed from the bypass tray.
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.
Refer to Wiring Diagram 4. Perform the following:
1. Check that the area at the bypass tray is clean and that the PMO actuator MP moves
freely, PL 8.20 Item 12.
2. Enter GP 1 Engine Test Mode Entry. Use the sensor test to check the (ME) PBA sub MP
sensor.
3. If necessary, install new components
• PBA SUB - MP SEN, PL 8.20 Item 24.
• PBA main, PL 1.10 Item 9.
Status Indicator RAPs
8.2, 8.3

8.3 Duplex Jam RAP

The machine has detected the paper jam during duplex printing.
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 3. Perform the following:
1. Open the right hand cover. Remove all jammed paper.
2. Check that the paper path is clear and undamaged.
3. Enter GP 1 Engine Test Mode Entry. Use the sensor test to check the following sensors.
Install new components as necessary:
• FD. This is the feed sensor, part of the PBA SUB - feed & P.EMP SEN, PL 8.25 Item
12.
• EX. This is the PBA SUB - exit sensor, PL 4.15 Item 22.
• OB. This is the PBA SUB - bin full sensor, PL 10.10 Item 20.
4. Enter GP 1 Engine Test Mode Entry and check that the motor step - MCK2 (main) and the
motor DC - MCK2 (BLDC) run. Install new components as necessary, PL 4.20.
5. Rotate the duplex drive gears at the rear of the machine to remove any paper. The gears
should rotate freely. Install new components as necessary, PL 8.10 and PL 8.11.
6. Disconnect the power cord from the machine and remove the rear cover. Manually rotate,
in a counter clockwise direction, the motor DC - MCK2 (BLDC), PL 4.20 Item 4. Observe
the PMO - roller feed, PL 8.15 Item 10. Check that the PMO - roller feed rotates when the
motor is rotated. Install new components as necessary.
7. Manually rotate, in a counter clockwise direction, the motor step - MCK2 (main), PL 4.20
Item 2. Observe the PM - roller FD F, PL 10.10 Item 16. Check that the PM - roller FD F
rotate when the motor is rotated. Install new components as necessary.
8. If necessary, install a new PBA main, PL 1.10 Item 9.
March 2004
2-6
WARNING
Work Centre M20 Family