Ricoh MP 7503SP Field Service Manual page 1296

7. Troubleshooting
SC540-03
SC540-04
SC541-00
1294
A Fusing web motor error 2
SC540-02 has occurred three times and the machine has shut down
automatically due to failure of the web motor.
• Web motor harness loose, broken, defective
• Web motor disconnected
• Web motor defective
• Inspect harness connection
• Inspect motor harness, connector, and replace if damaged.
• Replace motor
A Fusing web motor error 3
SC540-02 has occurred at total of 10 times and the machine has shut down
automatically due to failure of the web motor.
• Web motor harness loose, broken, defective
• Web motor disconnected
• Web motor defective
• Inspect harness connection
• Inspect motor harness, connector, and replace if damaged.
• Replace motor
A Fusing center thermistor error
The fusing temperature detected by the center NC sensor (thermistor) was
below 0°C for 7 s.
• Thermistor connector defective
• Thermistor damaged, or out of position
• Pull fusing unit out of machine.
• At the front of the fusing unit, inspect the connection of the NC
thermistor.
• Inspect the installation of the NC thermistor and confirm that it is not out
of position.
• Replace NC thermistor.