Ricoh B064 - Page 372

B140 SERIES AND G126 SERVICE MODE
B064 Series/B140 Series/G126 4-48 SM
SC No. Symptom Possible Cause
LCT tray malfunction 510 B
One of the following conditions is
detected:
• When the bottom plate is lifted,
the upper limit sensor does not
come on for 18 s.
• When the bottom plate is
lowered, the lower limit sensor
does not come on for 18 s.
• After lift begins, the upper limit
sensor does not switch on before
the pick-up solenoid switches on.
• The paper end sensor switches
on during lift and the upper limit
sensor does not switch on for 2.5
s, and a message prompts user
to reset paper.
• Tray lift motor defective or connector
disconnected
• Lift sensor defective or disconnected
• Pick-up solenoid defective or
disconnected
• Paper end sensor defective
Tandem rear fence motor error 515 B
One of the conditions is detected:
• The return sensor does not
switch on within 10 sec. after the
rear fence motor switches on.
• The HP sensor does not switch
on 10 sec. after the rear fence
motor switches on.
• The HP sensor and return sensor
switch on at the same time.
• Rear fence motor defective or poor
connection
• Paper or other obstacle interfering with
operation of the sensors
• Paper or other obstacle trapped between
tray and motor
• Motor mechanical overload due to
obstruction
• Return sensor or HP sensor defective or
dirty
Duplex jogger motor error 1 520 C
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 C
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 exit motor error 531 D
The PLL lock signal was low for 2
seconds during motor operation.
• Motor lock caused by too much load
• Motor driver defective
Fusing thermistor open 541 A
The fusing temperature detected by
the center thermistor was below
0°C for 7 sec.
• Thermistor open
• Thermistor connector defective
• Thermistor damaged, or out of position
Fusing temperature –15% less than the
standard input voltage
542 A Fusing temperature warm-up error