Ricoh A229 Service Manual page 436

SC440: Drum motor lock
-Definition- [B]
The drum motor lock signal is longer than 2 seconds while the drum motor is on.
- Possible causes -
• Too much load on the drive mechanism
• Drum motor defective
• Poor drum motor connector connection
• Interface board defective
SC441: Development motor lock
-Definition- [B]
The development motor lock signal is longer than 2 seconds while the
development motor is on.
- Possible causes -
• Too much load on the drive mechanism
• Development motor defective
• Poor drum motor connector connection
• Interface board defective
SC491: Polygonal mirror cooling fan motor lock
-Definition- [B]
The polygonal mirror cooling fan motor lock signal is longer than 5 seconds
while the polygonal mirror cooling fan motor is on.
- Possible causes -
• Too much load on the drive mechanism
• Polygonal mirror cooling fan motor defective
• Poor drum motor connector connection
SC495: Toner recycling unit error
-Definition- [B]
The toner recycling sensor output signal does not change within 500 ms when
the drum motor turns on.
- Possible causes -
• Too much load on the drive mechanism
• Toner recycling clutch defective
• Toner recycling clutch connector connection
• Toner recycling sensor connector connection
SM
SERVICE CALL CONDITIONS
6-13 A229