Over Heat Error Rap; Fax Error Messages Rap - Xerox WorkCentre M20 Service Manual

10.3 Over Heat Error RAP

The fuser temperature has risen above the normal level. Although the fuser unit can return to a
normal operating temperature, the fuser unit may consequently be damaged.
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
Do not touch the fuser while it is hot.
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 Diagram1, Wiring Diagram 2 and Wiring Diagram 3. Perform the following:
1. Switch off the machine. Remove the fuser unit. Examine the ELA HOU - fuser assembly
for heat damage. If necessary, install a new ELA HOU - fuser assembly, PL 9.10 Item 4.
2. Check that the thermistor is connected to the PBA main.
3. Check that the thermistor is clean and in good contact with the fuser roll.
4. Check the wiring from CN5 on the PBA main to CON101 on the SMPS + HVPS.
5. If necessary, install a new PBA main, PL 1.10 Item 9.
6. If necessary, install a new SMPS + HVPS, PL 1.10 Item 4.
Work Centre M20 Family

20.1 Fax Error Messages RAP

This is the set of messages displayed when the machine encounters fax problems. The mes-
sages are listed alphabetically, together with any recommended actions. Please note that the
service actions are limited. If the machine has a fax fault without displaying a message, go to
the 20.3 Fax Faults Without a Message RAP.
Messages
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.
Comm Error
Communication failure has occurred with either Fax transmission or reception. Try re-sending
the Fax.
Group not available
The user has selected a group location where only a single location can be used, or when the
group location is unavailable. Try again, checking for the correct group location.
Incompatible
The remote party does not have the feature the user has requested, for example, polling.
Line Busy
The remote party did not answer. Wait and try again.
Line Error
There is a problem with the phone line, affecting transmission or reception. Try again and if
necessary, wait for the line to clear.
Memory Full
The Fax data memory is full. Delete any unnecessary documents awaiting transmission, or
wait until more memory becomes available, or split the current Fax in to smaller units.
No Answer
It has not been possible to connect to the remote Fax, even after re-dial attempts. Check that
the remote Fax is on line and try again.
No. Not Assigned
No number has been assigned for the speed dial location selected. Assign a number to this
location or dial the number manually.
Power Failure
During a power-off period, the machine has lost its user memory. Check that the backup bat-
tery on the Main PBA is holding its charge of about +3V. If necessary, install a new PBA main,
PL 1.10 Item 9.
March 2004
2-13
WARNING
Status Indicator RAPs
10.3, 20.1