Ricoh B064 - Page 374

B140 SERIES AND G126 SERVICE MODE
B064 Series/B140 Series/G126 4-50 SM
SC No. Symptom Possible Cause
The end thermistor (contact type)
was less than 0C (32F) for more
than 7 seconds.
• Thermistor disconnected
• Thermistor connector defective
Fusing thermistor error 2 552 A
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.
• Fusing lamp disconnected
• Thermistor bent, damaged
• Thermistor position incorrect
Fusing thermistor error 3 553 A
The end thermistor (contact type)
was at 240°C (464°F) for more than
1 second.
• PSU defective
• IOB control board defective
• BICU control board defective
Fusing lamp error 555 A
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.
• Thermistor bent, out of position
• Fusing lamp disconnected
• Circuit breaker opened
Fusing pressure release motor error 569 D
During copying, the HP sensor
could not detect the actuator, tried
again 3 times and could not detect.
• Motor lock because of too much load
• Motor driver defective
• HP sensor defective, disconnected,
connector defective, harness damaged
Toner collection motor error 590 D
The toner collection motor sensor
output does not change for 3
seconds while the toner collection
motor is on.
• 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
1-bin Exit Motor Error (Japan Only) 599 D
The transport lock sensor output
does not change within 300 ms
after the motor switches on.
• Motor overload
• Motor driver defective