Ricoh M160 Service Manual page 258

Service Call
SC No. Level
SC532-00 D
SC No. Level
SC541-00 A
SC No. Level
SC542-01 A
M160/M161
Error Name/Error Condition/Major Cause/Solution
PSU Cooling fan error
The fan motor lock (rotating state) signal is sampled at 100 ms
intervals and the machine fails to receive the lock signal 50
times in succession.

Failed fan motor

Disconnected connector

Replace the fan motor.

Check the connector.

Replace the harness.

Replace the IOB.
Error Name/Error Condition/Major Cause/Solution
Broken fusing (Center) thermistor wire
The condition whereby the temperature is -20 deg C or less for 5
seconds has been detected 10 times or more.

Broken thermistor wire

Bad connector contact

Clear the SP: fusing SC.

Check the connector connection.

Replace the fusing (Center) thermistor.
Error Name/Error Condition/Major Cause/Solution
Fusing lamp (Center) thermistor not reloaded 1
The heater thermistor has increased by less than 2.0 degrees in
1.5 seconds 5 times in a row.

Deformed or floating thermistor

Input voltage out of range

Clear the SP: fusing SC.

Replace the thermistor.
6-14 SM