Ricoh Gestetner LANIER SAVIN G071 Service Manual page 89

No.
Definition
420 D Discharge error (fusing bias)
The discharge circuit is operating at the maximum PWM
duty value for 60 milliseconds.
421 D Discharge plate error
During discharging, the leakage detection signal is low
for 60 milliseconds.
430 D Transfer belt cleaning error
Cleaning is operating at the maximum PWM duty value
for 60 milliseconds.
440 D Main motor error
• The main motor starts or changes speed. → The lock
signal does not continue for 1 second within 3
seconds.
• The main motor starts. → The lock signal is detected
and operation proceeds normally. → The lock signal
is interrupted for 1 second.
460 D Temperature sensor error
The output is 4.5 V (or higher) or 0.3 V (or lower) for 12
seconds.
461 D Humidity sensor error
The output is 4.5 V (or higher) or 0.3 V (or lower) for 12
seconds.
480 D ID sensor error
The ID sensor is being calibrated (process control, step
1) → While the LED is off, the output voltage is 0.5 V or
lower.
481 D Transfer belt mark detection error
The main motor is operating; and the lock signal is
detected. → The belt mark sensor signal does not
change for 120 milliseconds.
502 B 2nd tray error
• The tray lift motor turns on. → The top of the paper
stack is not detected for 13 seconds.
• The tray is set. → The top of the paper stack is
detected. → The bottom plate is lowered. → The
stack detection is not cleared within 5 seconds. →
These steps are repeated 4 times.
SM
CÓPIA NÃO CONTROLADA
Symptom
4-5
CÓPIA NÃO CONTROLADA
SERVICE CALL
Possible Cause
• Discharge pin short
circuit
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Scratched fusing belt
• Short circuit in the
discharge plate
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Short circuit in the
transfer belt cleaning
unit
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Defective main motor
• Short circuit in the
temperature sensor
• Defective circuit
• Defective connector
• Short circuit in the
humidity sensor
• Defective circuit
• Defective connector
• Defective ID sensor
• Defective connector
• Defective main motor
• Image transfer belt
out of position
• Belt mark blurred or
absent
• Defective paper
height sensor
• Defective tray lift
motor
G071