Xerox WorkCentre M20 Service Manual page 59

8.7 No Paper Add Paper RAP
The machine does not detect paper in the paper 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 the following:
• (M20F) Wiring Diagram 3
• (4118/2218) Wiring Diagram 8
Perform the following:
1. Add paper to the paper tray.
2. If necessary, enter GP 1 Engine Test Mode Entry and check FE. This is the paper empty
sensor, part of the PBA SUB - feed & P.EMP SEN, PL 8.25 Item 12.
3. (M20F) Check the wiring between the PBA feed sensor and CN24 on the PBA main.
4. (4118/2218) Check the wiring between the PBA feed sensor and CN5 on the HVPS.
5. Install new components as necessary:
• PBA main (M20F), PL 1.10 Item 4.
• HVPS (4118), PL 1.15 Item 10.
• HVPS (2218), PL 1.20 Item 10.
WorkCentre M20, 4118, FaxCentre 2218 Family
8.8 Tray 2 Not Detected RAP
The machine does not detect the second paper tray.
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.
Go to the relevant procedure:
• M20F Checkout
• 4118/2218 Checkout
M20F Checkout
Refer to Wiring Diagram 4 and Wiring Diagram 6. Perform the following:
1. Check the CBF - harness - SCF, PL 4.10 Item 22. Make sure that the harness is routed
through the opening in the bottom of the shield - P main lower, PL 1.10 Item 6. Make sure
the harness is securely connected to CN33 on the PBA main. If necessary, install a new
CBF - harness - SCF, PL 4.10 Item 22.
2. Check that the bulkhead connector is fully seated in the CBF harness - SCF, PL 7.16 Item
4.
3. Remove the machine from the ELA unit SCF. Check that the ground connectors, PL 7.16
Item 6 on the ELA unit SCF are clean and undamaged. Install new components as neces-
sary, PL 7.16.
4. Remove the PMO - cover top SCF, PL 7.15 Item 2. Check the CBF harness - SCF, PL
7.16 Item 4. make sure the harness is securely connected to CN9 on the PBA SCF. If
necessary, install a new CBF harness - SCF, PL 7.16 Item 4.
5. Install new components as necessary:
• PBA SCF, PL 7.16 Item 3.
• PBA main, PL 1.10 Item 4.
4118/2218 Checkout
Refer to the following:
• (4118) Wiring Diagram 6 and Wiring Diagram 11
• (2218) Wiring Diagram 6 and Wiring Diagram 16
Perform the following:
1. (4118) Check the CBF - harness - SCF, PL 4.10 Item 22. Make sure the harness is
securely connected to CN18 on the PBA main. If necessary, install a new CBF - harness -
SCF, PL 4.10 Item 22.
2. (2218) Check the CBF - harness - SCF, PL 4.10 Item 22. Make sure the harness is
securely connected to CN21 on the PBA main. If necessary, install a new CBF - harness -
SCF, PL 4.10 Item 22.
3. Check that the bulkhead connector is fully seated in the CBF harness - SCF, PL 7.16 Item
4.
4. Remove the machine from the ELA unit SCF. Check that the ground connectors, PL 7.16
Item 6 on the ELA unit SCF are clean and undamaged. Install new components as neces-
sary, PL 7.16.
December 2006
2-13
WARNING
Status Indicator RAPs
8.7, 8.8