Xerox WorkCentre M20 Service Manual page 74

OF3 Use Auxiliary Access RAP
The machine has detected that there is no credit in the foreign device.
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 2
• (4118) Wiring Diagram 10
• (2218) Wiring Diagram 16
Perform the following:
1. If there is credit in the foreign device, check the wiring between the foreign device and the
PBA foreign device interface.
2. (M20F) Check the wiring between the PBA foreign device interface and CN38 on the PBA
main.
3. (4118) Check the wiring between the PBA foreign device interface and CN17 on the PBA
main.
4. (2218) Check the wiring between the PBA foreign device interface and CN20 on the PBA
main.
5. If necessary, install a new PBA foreign device interface harness, PL 1.10 Item 11.
6. If necessary, install a new PBA foreign device interface, PL 1.10 Item 10.
7. Install new components as necessary:
• PBA main (M20F), PL 1.10 Item 4.
• PBA main (4118), PL 1.15 Item 9.
• PBA main (2218), PL 1.20 Item 9.
Status Indicator RAPs
OF3, OF4
OF4 Audible Noise RAP
To isolate and identify the source of unusual noises.
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.
Ask the customer if there are any specific machine functions that are noisy. Identify the source
of the noise by exercising the machine in all modes
To isolate the noise within an assembly perform the following:
• To run the motor step - MCK2 (main), PL 4.20 Item 2, enter GP 1 Engine Test Mode. Per-
form the fuser motor test.
• (M20F) To run the motor DC - MCK2 (BLDC), PL 4.20 Item 4, enter GP 1 Engine Test
Mode. Perform the BLDC motor test.
• (4118/2218) To run the motor step (BLDC), PL 4.20 Item 29, enter GP 1 Engine Test
Mode. Perform the BLDC motor test.
• To run the unit LSU motor, enter GP 1 Engine Test Mode. Perform the LSU motor test.
NOTE: If tray 1 is removed, the noise from the LSU motor will be amplified by the tray
cavity.
• (4118) To run the ADF motor step-scan, PL 5.24 Item 11, enter GP 3 Service Mode Entry.
Scroll to System Admin Tools/Maintenance/ADF Test. Select the motor forward test.
• (2218) To run the motor step - DADF, PL 5.11 Item 15, enter GP 25 DADF Test. Perform
the scan motor test.
• (2218) To run the motor step - duplex, PL 5.11 Item 26, enter GP 25 DADF Test. Perform
the duplex CW test.
• To run the motor step - SCF, enter GP 1 Engine Test Mode. Perform the SCF motor test.
The following are possible causes and potential solutions. Go to the relevant procedure:
• Squeaks.
• Unusual Noise from the ELA HOU Scanner Assembly.
• Grinding Noise from the Exit Assembly.
• Clicking Noise from the Front of the Machine.
Squeaks
Possible causes are:
• Contamination of the bearings, bushes and drive shafts.
Solution:
– Clean the components.
– Plastic bushes should be cleaned and lubricated.
– Install new components as necessary.
• Bearing in cooling fans
December 2006
2-28
WARNING
WorkCentre M20, 4118, FaxCentre 2218 Family