SERVICE CALL CONDITIONS17 May, 1999
SC502: 2nd Tray Lift Malfunction
SC503: 3rd Tray Lift Malfunction
Definition: [C]
The paper lift sensor is not activated after the tray lift motor has been on for 13
seconds.
Possible Causes:
? Tray upper lift sensor defective
? Tray lift motor defective
? Poor tray lift motor connection
? Too much load on the drive mechanism
SC506: Paper Tray Motor Lock (Optional Paper Tray Unit Only)
Definition: [C]
A motor lock signal is not detected for more than 1.5 s after the motor starts
rotation, or the lock signal is not detected for more than 1.0 s after the last lock
signal detection.
Possible Causes:
? Paper tray motor defective
? Too much load on the drive mechanism
SC542: Fusing Temperature Warm-up Error
Definition: [A]
After the main switch is turned on, the fusing temperature either does not reach
130°C within 50 seconds, or does not reach the printing temperature within 70
seconds.
Possible Causes:
? Fusing thermistor defective or out of position
? Fusing lamp open
? Fusing thermofuse open
? Power supply unit defective
? Poor connection of the fusing unit
SC543: Fusing Overheat Error
Definition: [A]
A fusing temperature of ov°C iers 231 detected for 1 second by the fusing
thermistor.
Possible Causes:
? Fusing thermistor defective
? Power supply unit defective
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ACEC
