Ricoh D146 Service Manual page 557

SC No. Level
SC584-00 A
SM
Error Name/Error Condition/Major Cause/Solution
Pressurized Expanded Edge Thermistor High Temperature
Detection (hardware)
Above (T4) degrees C detected
§
Triac short-circuit
§
IOB controller defective
§
BCU controller defective
§
Fusing control: out of control
§
Replace the IOB
§
Replace the BCU
§
Replace the fusing unit
5-83
Service Call 501-584
D146/D147/D148/D149/D150