Ricoh B064 Service Manual page 374

B140 SERIES AND G126 SERVICE MODE
SC No.
The end thermistor (contact type)
was less than 0C (32F) for more
than 7 seconds.
552 A Fusing thermistor error 2
The end thermistor (contact type)
could not detect:
• 100°C 25 seconds after the start
of the warmup cycle.
• A change in temperature more
than than 16 degrees for 5
seconds.
• The reload temperature with 56
seconds after the start of the
fusing temperature control cycle.
553 A Fusing thermistor error 3
The end thermistor (contact type)
was at 240°C (464°F) for more than
1 second.
555 A Fusing lamp error
After the start of the warmup cycle,
a fusing lamp was at full power for
1.8 seconds but the hot roller did
not turn.
569 D Fusing pressure release motor error
During copying, the HP sensor
could not detect the actuator, tried
again 3 times and could not detect.
590 D Toner collection motor error
The toner collection motor sensor
output does not change for 3
seconds while the toner collection
motor is on.
599 D 1-bin Exit Motor Error (Japan Only)
The transport lock sensor output
does not change within 300 ms
after the motor switches on.
B064 Series/B140 Series/G126
Symptom
4-50
Possible Cause
• Thermistor disconnected
• Thermistor connector defective
• Fusing lamp disconnected
• Thermistor bent, damaged
• Thermistor position incorrect
• PSU defective
• IOB control board defective
• BICU control board defective
• Thermistor bent, out of position
• Fusing lamp disconnected
• Circuit breaker opened
• Motor lock because of too much load
• Motor driver defective
• HP sensor defective, disconnected,
connector defective, harness damaged
• Motor lock due to obstruction
• Motor driver board defective
• Motor connection loose, defective
• Toner collection motor sensor
disconnected, sensor defective
• Rotational transmission shaft (φ6 x 30)
missing
• Motor overload
• Motor driver defective
SM