Ricoh D147 - Page 546

Service Call 501-584
D146/D147/D148/D149/D150 5-72 SM
SC No. Level Error Name/Error Condition/Major Cause/Solution
§ Replace the motor
§ Replace the HP sensor
§ Replace the fusing unit
SC No. Level Error Name/Error Condition/Major Cause/Solution
SC551-01 A Fusing Edge Thermopile Disconnection
Below -50 degrees C (or below CB) is detected for (t11) seconds
continuously.
§ Thermopile disconnection
§ Connector disconnected
§ Replace the thermopile
§ Reset the connector
§ Replace the connector
§ Replace the fusing unit
SC551-02 A Edge NC Sensor Disconnection
3ED - 3FF (FB voltage: 3.243V-3.300V) is detected for (t13)
seconds continuously (NC sensor center: detection &
compensation NC sensor edge: detection & compensation).
Detection period: 100 ms, detection frequency: 10 times or
more.
§ NC sensor disconnection
§ Connector disconnected
§ Replace the NC sensor
§ Reset the connector
§ Replace the connector
§ Replace the fusing unit
SC551-03 A Edge NC Sensor Short-circuit
AD value: 0-13 (FB voltage: 0.000V-0.041V) (*3) is detected for
(t14) seconds continuously.
Detection period: 100 ms, detection frequency: 10 times or
more.