Ricoh Gestetner LANIER SAVIN G071 Service Manual page 91

No.
Definition
546 A Unstable temperature (heating roller)
• The heating roller thermistor detects unstable
temperature increases or decreases within 60
seconds.
551 A Thermistor disconnection (pressure roller)
The pressure roller thermistor detects7°C or lower for 30
seconds.
552 A Warm-up time over (pressure roller)
The main switch is turned on or a cover is closed. →
The fusing pressure roller does not reach the ready
temperature within 200 seconds.
553 A Overheat error (pressure roller)
The pressure roller thermistor detects 220°C for 5
seconds.
554 A Low temperature error (pressure roller)
During standby or operation, the pressure roller
thermistor detects 80°C or less for 5 seconds.
555 A Full power error (pressure roller)
Fusing unit warm-up is complete.→ The fusing pressure
roller stops turning. → The pressure roller lamp keeps
outputting the maximum power for 200 seconds.
556 A Unstable temperature (pressure roller)
• The pressure roller thermistor detects unstable
temperature increases or decreases within 60
seconds.
560 D Zero cross error
The main switch is turned on; the fusing relay turns on.
→ 50 Hz or 60 Hz is not detected within 5 seconds.
670 D No response from BCU at power on
680 D EEPROM error
The main switch is turned on.→ EEPROM is not
connected.
SM
CÓPIA NÃO CONTROLADA
Symptom
4-7
CÓPIA NÃO CONTROLADA
SERVICE CALL
Possible Cause
• Thermistor loose
connection
• Fusing - drawer
loose connection
• Thermistor loose
connection
• Defective harness
• Defective connector
• Defective lamp
(loose connection,
thermostat failure,
PSU, thermostat)
• Incorrect detection
(thermistor loose
connection, fusing -
drawer loose
connection)
• Loose connection
• Defective BCU board
• Defective PSU
• Defective lamp
(loose connection,
thermostat failure,
PSU, thermostat)
• Incorrect detection
(thermistor loose
connection, fusing -
drawer loose
connection)
• Thermistor loose
connection
• Fusing - drawer
loose connection
• Thermistor loose
connection
• Fusing - drawer
loose connection
• Defective relay circuit
• Defective PSU
• Incorrect power
supply
• Loose connection
• Defective controller
• Defective BCU
• Incorrect EEPROM
connection
G071