Ricoh MT-C1 - Page 410

B064 SERIES SERVICE MODE 15 February 2006
4-22
SC No. Symptom Possible Cause
Tandem rear fence motor error 515
B
One of the conditions is detected:
• The rear fence does not reach
the return position within 10 s
after the rear fence motor
switches on, or does not return to
the HP.
• The HP sensor and return sensor
switch on at the same time.
• Rear fence motor defective or poor
connection
• Paper or other obstacle trapped between
tray and motor
• Motor mechanical overload
• Return sensor or HP sensor defective or
dirty
516 B Tandem side fence motor error
The side fences do not reach the
fully open or closed position within
2 seconds after the side fence
motor switches on.
• Side fence motor defective or poor
connection
• Motor mechanical overload
• Side fence positioning sensor defective
or dirty
Duplex jogger motor error 1 520 D
When the jogger fence moves to
the home position, the jogger HP
sensor does not turn on even if the
jogger fence motor has moved the
jogger fence 153.5 mm.
• Paper or other obstacle has jammed
mechanism
• Sensor connector disconnected or
defective
• Sensor defective
Duplex jogger motor error 2 521 D
When the jogger fence moves from
the home position, the jogger fence
HP sensor does not turn off even if
the jogger motor has moved the
jogger fence 153.5 mm.
• Paper or other obstacle has jammed
mechanism
• Sensor connector disconnected or
defective
• Sensor defective
Fusing thermistor open 541 A
• The fusing temperature detected
by the thermistor is below 7°C for
35 seconds.
• The center thermistor (non-
contact) abnormal.
• Thermistor open
• Thermistor connector defective
• Thermistor damaged or warped
• Fusing temperature –15% less than the
standard input voltage
Fusing temperature warm-up error 542 A
• After power on, or after closing
the front door, the hot roller does
not reach the 80°C control
temperature within 360 s.
• After the fusing lamp
temperature exceeds 80°C,
temperature does not change 2
degrees within 20 s.
• Fusing lamp disconnected
• Thermistor warped or installed incorrectly
• Thermostat operating
Fusing lamp overheat error 1 (software) 543 A
• Central thermistor detected a
temperature of 230°C at the
center of the hot roller.
• End thermistor detected 220°C x
100 ms 5 times at the end of the
hot roller.
• PSU defective
• BCU defective
Fusing lamp overheat error 1 (hardware) 544 A
The BCU detects an overheat error
even if the protection in the
software does not work.
• PSU defective
• BCU defective