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July 30th, 1996
7.3. SERVICE CALL CONDITIONS
If the Call Service indicator is lit, one of the following conditions has occurred.
Symptom
Laser diode failure
Fusing unit failure
Mirror motor error
Fusing unit fan motor error
Unexpected printer error
(Printer Ready signal is not detected.)
Unexpected printer error
(Valid signal is not received.)
To find out which problem has occurred, either:
•
See the Auto Service Call report that was sent to the service station by
the machine. The sub-code is stored at RAM addresses 8002DC(H)
and 8002F9(H).
•
Check the error code history using service function 03.
•
Try to clear the service call condition (for failures which are not related
to the fusing unit): switch the power off, wait 10 seconds, then switch
back on.
•
An SC Code is displayed on the LCD panel when the error occurs.
If the problem remains, work through the appropriate troubleshooting proce-
dure from the following pages.
After each troubleshooting attempt, reset the machine and try to operate it. If
the machine still does not work, continue troubleshooting.
Symptom: LD Failure (Error Code 9-20)
This error occurs in the following condition:
• The laser power is out of the specified range (sub-code 22).
Action:
Check that all the laser optic components are aligned correctly and clean them if
necessary.
Check the connection between the MCB (CN5) and the LDDR.
Check that the square mirror and LDDR are correctly positioned.
If the problem still remains, replace the LDDR, MCB or FCU.
SERVICE CALL CONDITIONS
Error Code Sub-code
9-20
9-22
9-23
9-34
9-35
9-35
7-19
TROUBLESHOOTING
SC Code
22
2-22
02
0-02
31
3-31
51
5-51
61
6-61
62
6-62
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