Ricoh G035 Service Manual page 505

Rev. 08/2000
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SC390-2: TD Sensor Error 2
Definition [B]
The TD sensor output voltage is less than 1.8 V or more than 4.8 V during TD
sensor initial setting.
Possible Causes
• TD sensor abnormal
• No developer in the development unit
SC391: Development Bias Leak
Definition [B]
A development bias leak signal is detected.
Possible Causes
• Poor connection between dev. bias terminal and high voltage supply bd.
• High voltage supply board defective
SC401: Transfer Roller Error
Definition [B]
The transfer roller current feedback signal is not detected or the transfer roller
current leak signal is detected.
Possible Causes
• High voltage supply board defective
• Poor connection between dev. bias terminal and high voltage supply bd.
• Poor PCU connection
SC403: Transfer Belt Position Sensor Error
Definition [B]
The transfer belt position sensor does not activate even if the transfer belt
clutch has rotated once.
Possible Causes
• Main motor/drive malfunction
• Transfer belt position sensor defective
• Poor transfer belt position sensor connection
SC405: Transfer Belt Error
Definition [B]
The transfer belt does not move away from the drum during ID sensor pattern
checking.
Possible Causes
• Main motor/drive malfunction
• Transfer belt position sensor defective
• Poor transfer belt position sensor connection
SM
SERVICE CALL CONDITIONS
7-7 G035