Ricoh B264 Service Manual page 235

402 D Transfer roller open error
The transfer roller current feedback
signal is not detected.
403 D Transfer belt position sensor error
The transfer belt position sensor does
not activate even if the transfer belt
contact clutch has been switched on
twice and rotated once.
405 D Transfer belt error
The transfer belt does not move away
from the drum during ID sensor pattern
checking.
440 D Main motor lock
A main motor lock signal is not
detected within 2 seconds after the
main motor turns on.
450 D Feed Development Motor Error
The PLL lock signal remains LOW for 2
s while the feed development motor is
operating.
490 D Exhaust fan motor lock
An exhaust fan motor lock signal is not
detected within 5 seconds after the
exhaust fan motor turns on.
492 D Cooling fan motor lock
A cooling fan motor lock signal is not
detected within 5 seconds after the
cooling fan motor turns on.
501 B 1st tray lift malfunction
The paper height sensor is not activated after the tray lift motor has been on for 10
seconds. If the main power switch is turned on when the paper is already at the
feed height, the paper height position is detected again. At this time, the paper
height sensor should de-activate within 5 seconds after the paper bottom plate
starts to drop. If it does not deactivate within 5 s four times consecutively, a
message will prompt the user to reset Tray 1. After two attempts to release the
error by re-setting the paper tray, if this does not solve the problem then this SC is
displayed.
• Lift motor malfunction or disconnected
• Height sensor abnormal, or connector loose
• Loose paper or object between the tray and motor
• Pick-up arm malfunction
SM
SERVICE CALL CONDITIONS
• High voltage supply board defective
• Transfer connector cable defective
• Transfer connector defective
• Poor PCU connection
• Main motor/drive malfunction
• Transfer belt contact clutch defective
• Transfer belt position sensor
defective
• Harness disconnected
• Main motor/drive malfunction
• Transfer belt position sensor
defective
• Poor transfer belt position sensor
connection
• Transfer belt contact clutch defective
• Too much load on the drive
mechanism
• Main motor defective
• Motor lock caused by overload.
• Motor driver defective.
• Too much load on the drive
mechanism
• Exhaust fan motor defective or a
loose object is interfering with the fan
• Poor fan motor connector connection
• Too much load on the drive
mechanism
• Cooling fan motor defective or a
loose object is interfering with the fan
• Poor fan motor connector connection
4-7 B264/B265