Pressure Roller Thermistor (Full-Bleed Edge) Error (Sc58*-**) - Ricoh MP C3004 Field Service Manual

6. Troubleshooting
SC No.
SC574-00

Pressure Roller Thermistor (Full-Bleed Edge) Error (SC58*-**)

SC No.
SC581-01
SC581-05
934
Type Error Name/Error Condition/Major Cause/Solution
A Pressure Roller Thermistor (edge) High Temperature Detection (hardware)
Above (T4) degrees C detected
• Triac short-circuit
• IOB defective
• BCU defective
• Fusing control: out of control
1. Reconnect the connector between the fusing unit and BCU.
2. Replace the Pressure Roller Thermistor (Edge).
3. Replace the harness between the fusing unit and BCU.
4. Replace the BCU.
5. Replace the Paper Transport IOB.
Type Error Name/Error Condition/Major Cause/Solution
A Pressure Roller Thermistor (Full-Bleed Edge) Thermistor Disconnection
Below 0 degree C (or above 3F9) detected for specified time (sec.)
continuously.
Detection period: 100ms, detection count: 10 times or more.
D Pressure Roller Thermistor (Full-Bleed Edge) Disconnection (Low Power)
-
• Thermistor disconnection
• Connector disconnected
1. Check the power supply voltage and reconnect the cable to the
outlet. (-05 only)
2. Replace the Pressure Roller Thermistor (Full-Bleed Edge).
3. Replace the harness between the fusing unit and BCU.
4. Replace the fusing unit.
5. Replace the BCU, or PSU (AC Controller Board).