Ricoh MET-C1 Field Service Manual page 506

5. Troubleshooting
SC No.
SC542-02
SC542-03
SC No.
SC543-00
504
Level Error Name/Error Condition/Major Cause/Solution
A Fusing central thermopile does not reload
(T21) degrees C not reached after heater 1 ON for (t3) seconds
A Fusing central thermopile does not reload
Heating central reload permission temperature not reached after heater 1
ON for (t311) seconds.
• Thermopile lens dirt
• Thermopile modification/float
• Outside input voltage guarantee
• After excessive temperature rise prevention unit operation
• Replace the thermopile
• Check that the input voltage is within acceptable limits
Level Error Name/Error Condition/Major Cause/Solution
A Fusing central thermopile high temperature detection (software)
Above (T3) degrees C detected for (t4) seconds continuously.
Detection period 100ms, detection count: 10 times or more.
• Triac short-circuit
• IOB board defective
• BCU board defective
• Replace the IOB board
• Replace the BCU board
• Replace the fusing unit