Fusing Sleeve (Edge) Error - Ricoh MP C2504 Field Service Manual

Fusing Sleeve (Edge) Error (SC55*-**)
SC No. Type
SC551-01 A
SC551-02 A
Error Name/Error Condition/Major Cause/Solution
Thermopile (Edge) Disconnection
Below -50 degrees C (or below CB) is detected for 0.1 sec continuously.
• Thermopile disconnection
• Connector disconnected
• Harness disconnection between the fusing unit and the BCU
• BCU defective
1. Reconnect the connectors (main machine side, BCU side).
2. Replace the thermopile (edge).
3. Replace the harness between the fusing unit and the BCU.
4. Replace the BCU.
Non-contact Thermistor (Edge) Disconnection
Above 3F6 is detected for 1 sec continuously (NC sensor center:
detection & compensation NC sensor edge: detection & compensation).
Detection period: 0.1 sec, detection frequency: 10 times or more.
• Non-contact thermistor disconnection
• Connector disconnected
• Harness disconnection in the fusing unit
• Harness disconnection between the fusing unit and the BCU
• BCU defective
1. Reconnect the connectors (between the fusing unit and the BCU).
2. Replace the non-contact thermistor with the harness.
3. Replace the fusing unit.
4. Replace the harness between the fusing unit and the BCU.
5. Replace the BCU.
Service Call 501-584
831