Ricoh Gestetner LANIER SAVIN G071 Service Manual page 87

No.
Definition
300 D Charge corona unit electrical leak
The charge corona unit keeps outputting; the unit is
operating at the minimum PWM duty value. → 4.5 Volt
(or more) is returning for 60 milliseconds.
301 D Charge corona unit disconnection
The charge corona unit keeps outputting. → The unit is
operating at the maximum PWM duty value for 60
milliseconds.
302 D Charge grid electrical leak
The charge grid keeps outputting. → The returning
voltage exceeds the target by 0.5 Volt or more for 120
milliseconds.
305 D Charge corona unit cleaner error
• Cleaning starts. → The lock signal is not detected
within 30 seconds.
• Cleaning starts. → The cleaner turns. → The lock
signal is detected within 6 seconds.
• The lock signal is detected while the unit is moving
away from the HP. → The next lock signal is detected
within 6 seconds after the unit has turned toward the
HP.
350 D Development error 1 (K/Y)
A development process starts. → The returning voltage
exceeds the target by 0.5 Volt or more for 60
milliseconds.
351 D Development error 2 (C/M)
A development process starts. → The returning voltage
exceeds the target by 0.5 Volt or more for 60
milliseconds.
352 D Development motor error
• The development motor starts or changes speed. →
The motor does not detect a 1-second lock signal
within 3 seconds.
• The development motor starts. → The lock signal is
detected during normal operation. → The lock signal
is interrupted for 1 second or more.
SM
CÓPIA NÃO CONTROLADA
Symptom
4-3
CÓPIA NÃO CONTROLADA
SERVICE CALL
Possible Cause
• Short circuit in the
charge corona unit
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Defective PCU
installation
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Short circuit in the
charge grid
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Defective cleaner
• Short circuit in the
development unit
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Short circuit in the
development unit
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Defective
development motor
G071