Ricoh M281 Series - Page 480

Service Call 501-582
D255/D256/M281/M282 6-42 SM
SC No. Type Error Name/Error Condition/Major Cause/Solution
 Connector pin defective
If the I/F connector pins of the fuser unit and the main unit
are deformed owing to foreign materials, replace the
connectors or the units including the connectors.
 Triac defective
Disconnect the power cord and check that the resistance
between terminals T1 and T2 of the triac TRA31 and triac
TRA41 on the PSU are several Mega-Ohms and not
shorted. If failed, replace the PSU.
 Fusing thermistor defective
Replace the fusing unit.
 IOB defective
Replace the IOB.
SC No. Type Error Name/Error Condition/Major Cause/Solution
SC581-00 C Temperature Sensor Disconnected Error
 The average of the output from the temperature sensor is
1019 or more for 160 ms.
 The average of the output from the temperature sensor is
930 or more for 5 seconds.
 Temperature sensor defective
 IOB defective