Ricoh M281 Series Service Manual page 496

Service Call 700
6.8 SERVICE CALL 700
6.8.1 SC700 (ENGINE: PERIPHERALS) (MP 501/601 ONLY)
SC No. Type
SC700-00 C
D255/D256/M281/M282
Error Name/Error Condition/Major Cause/Solution
ARDF Inverter Motor Error
The home position cannot be detected even if the machine
reties 3 times consecutively.
* Conditions to detect the home position: When the home
position is detected by driving the ARDF inverter motor one
rotation.

ARDF inverter motor defective

ARDF position sensor defective

IOB defective

ARDF inverter motor defective
1. Disconnect the power cord, and wait 5 seconds.
Reconnect the power cord, and then turn the main
power ON.
2. Confirm that the connector of ARDF inverter motor is
firmly connected. If necessary, connect the connector
all the way in.
3. Reconnect the following connector.

ARDF Inverter Motor – IOB connector
4. If the connector is broken, shorted, or grounded,
replace the connector. If the connector pin is deformed,
replace the connector.
5. Replace the ARDF inverter motor.
6-58 SM