Ricoh B132 Service Manual page 452

SERVICE CALL CONDITIONS
SC554 A Pressure roller thermistor error 4: Hardware - High temperature
The thermistor detected a
temperature over 230°C.
Do SP5810 to cancel the SC fusing code.
SC555 A Pressure roller thermistor error 5: Lamp remains on
After hot roller reaches warmup
temperature, the pressure roller
fusing lamp remains for 6 sec.
while the hot roller is not
rotating.
Do SP5810 to cancel the SC fusing code.
SC556 A Heating roller thermistor 2 error 5: Lamp remains on
After hot roller reaches warmup
temperature, the pressure roller
fusing lamp remains for 6 sec.
while the hot roller is not rotating.
SC561 A Hot roller thermistor error 1: Thermistor disconnected
The temperature measured by the hot roller
thermistor does not reach the prescribed
warm-up temperature within 100 sec.
Hot roller thermistor error 2: Failure to reach warmup temperature
SC562 A
After the main switch is turned on or the
cover is closed, the heating roller
temperature does not reach the ready
temperature within 2 sec. after the heater
switches on.
-or-
If the roller was below 45°C, the heating
roller did not reach the ready temperature 2
sec. after reaching 45°C.
Note: Thermistor 2 stops monitoring the
temperature once Thermistor 1 detects
ready temperature.
Do SP5810 to cancel the SC fusing code.
B132/B200
• TRIAC short
• IOB defective
• BICU defective
• Fusing temperature control is erratic
• Thermistor damaged, or out of position
• Fusing lamp disconnected, broken
• Thermistor damaged, or out of position
• Fusing lamp disconnected, broken
• Loose connection of the hot
roller thermistor
• Defective hot roller
thermistor
• Defective BCU
• Hot roller fusing lamp broken
• Defective hot roller
thermistor
• Defective BCU
4-52 SM