6.3. SERVICE CALL CONDITIONS
If the Call Service indicator is lit, one of the following conditions has occurred.
•
Mirror Motor Locked (hexagonal mirror motor lock failure)
•
Hot Roller Down (fusing lamp failure)
•
LD Power Control Failure (laser diode power control failure)
•
Main Motor Locked (main motor lock failure)
•
Charger Leak (transfer corona charge leak)
To find out which problem has occurred, either:
•
See the Auto Service Call report that was sent to the service station for
the problem with the machine. This report lists a sub-code, as well as
the error message; this sub-code may help you find the problem.
•
Check the error code history using function 93.
•
Try to clear the service call condition: switch the power off, wait 10 sec-
onds, then switch back on.
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: Charger Leak (Error Code 9-17)
This error occurs if FCU CN27-3 stays high for 3 s or more while the transfer corona is on
(sub-code 31)
Check
Action if Yes
Action if No
Clean the transfer corona wire and unit.
Check that the FCU outputs the power and trigger signals to the power pack. If not,
replace the FCU.
Replace the FCU, power pack or transfer corona unit if the problem still occurs.
Symptom: LD Power Control Failure (Error Code 9-20)
This error occurs in either of the following conditions:
•
Error in the Laser Interface (LIF) chip on the FCU (sub-code 41 or 42)
•
Laser power failure (sub-code 43)
Check
Action if Yes
Action if No
1. Do the front cover
interlock switch and front
cover microswitch both
pass + 5V?
Replace the FCU or laser
diode drive board.
Replace the defective switch
or actuator mechanism.
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TROUBLESHOOTING
1st August, 1994
SERVICE CALL CONDITIONS
6-19