Ricoh G035 Service Manual page 278

SERVICE CALL CONDITIONS
SC440: Main Motor Lock
Definition [B]
The main motor lock signal is longer than 2 seconds while the main motor turns
on.
Possible Causes
• Too much load on the drive mechanism
• Main motor defective
⇒
SC442: PCU New Unit Detection Error
Definition [B]
After the main motor turns on, the PCU new unit detection sensor remains ON
for 2 or more seconds.
Possible Causes
• New unit detection sensor defective
• PCU defective
SC490: Exhaust Fan Motor Lock
Definition [B]
An exhaust fan motor lock signal is not detected within 5 seconds after the
exhaust fan motor turns on.
Possible Causes
• Too much load on the drive mechanism
• Exhaust fan motor defective
• Poor fan motor connector connection
SC492: Cooling Fan Motor Lock
Definition [B]
A cooling fan motor lock signal is not detected within 5 seconds after the
cooling fan motor turns on.
Possible Causes
• Too much load on the drive mechanism
• Cooling fan motor defective
• Poor fan motor connector connection
SC493: Bridge Unit Cooling Fan Lock
Definition [B]
A bridge unit cooling fan motor lock signal is not detected within 5 seconds
after the bridge unit cooling fan motor turns on.
Possible Causes
• Too much load on the drive mechanism
• Bridge unit cooling fan motor defective
• Poor fan motor connector connection
G035
NOTE: SC442 can be cleared by
turning the Main Swicth OFF
and ON, it will reoccur if the
defective components are not
replaced or repaired.
7-8
Rev. 11/2000
SM