Gestetner A294 Service Manual page 481

Rev.9/2001
SC542: Fusing Temperature Warming-up Error
Definition [A]
The fusing temperature does not reach the fusing standby temperature within 6
minutes after the main power switch is turned on, or after the front doors are
closed.
Possible Causes
• Fusing thermistor defective or out of position
• Fusing lamp open
• Fusing thermofuse open
• BCU defective
• AC drive board defective
• Poor fusing unit connection
SC543: Fusing Overheat Error 1
Definition [A]
A fusing temperature of over 220°C is detected for 5 seconds by the fusing
thermistor.
Possible Causes
• Fusing thermistor defective
• BCU defective
SC544: Fusing Overheat Error 2
Definition [A]
The fusing temperature monitoring circuit defects abnormal fusing temperature.
Possible Causes
• Fusing thermistor defective
• BCU defective
SC545: Fusing Overheat Error 3
Definition [A]
The fusing lamp stays on at full power for 45 seconds while in the stand-by
condition after warming-up is completed.
Possible Causes
• Fusing thermistor out of position
SM
CÓPIA NÃO CONTROLADA
7-23
CÓPIA NÃO CONTROLADA
SERVICE CALL CONDITIONS
A294/A295