Gestetner A294 Service Manual page 467

Rev.9/2001
SC337: Polygonal Mirror Motor Error 3
Definition [B]
The polygonal mirror motor status is changed even though no signal is sent
from the SICU.
Possible Causes
• Polygonal mirror motor defective
• Electrical noise
• Polygonal mirror motor drive board defective
• SICU board defective
SC338: Polygonal Mirror Motor Error 4
Definition [B]
1) The polygonal mirror motor operating speed does not become stable for 20
seconds after the polygonal mirror motor is turned on, or the polygonal mirror
motor speed is changed.
2) The stop signal from the polygonal mirror motor does not become stable for
20 seconds after the polygonal mirror motor is turned off.
Possible Causes
• Polygonal mirror motor defective
• Poor connection between the polygonal mirror motor drive board and the
SICU board
• Polygonal mirror motor drive board defective
• SICU board defective
SC340: TD Sensor Error 1
Definition [B]
The TD sensor output voltage is less than 0.5 V or more than 4.0 V 10 times
consecutively during copying.
Possible Causes
• TD sensor defective
• Poor connection between the TD sensor and the BCU
• BCU defective
• Toner supply defective
SM
CÓPIA NÃO CONTROLADA
7-9
CÓPIA NÃO CONTROLADA
SERVICE CALL CONDITIONS
A294/A295