Ricoh Gestetner LANIER SAVIN G071 Service Manual page 88

SERVICE CALL
No.
Definition
400 D 1st transfer (image transfer) electric leakage (+)
Image transfer starts. → The process operates at the
minimum PWM duty value. The returned current
exceeds 1.8 V for 180 milliseconds.
401 D 1st transfer (image transfer) electric leakage (–)
Image transfer starts. → The negative (–) output is at the
maximum PWM duty value for 60 milliseconds.
410 D 2nd transfer (paper transfer) electric leakage (+)
Paper transfer starts. → The positive (+) output is at the
minimum PWM duty value. → The returning voltage
stays at 2.7 V or more for 60 milliseconds.
411 D 2nd transfer (paper transfer) electric leakage (–)
Paper transfer starts. → The negative (–) output is at the
minimum PWM duty value. → The returning voltage
stays at 4.5 V or more for 60 milliseconds.
412 D 2nd transfer (paper transfer) disconnection (+)
Paper transfer starts. → The positive (+) output is at the
maximum PWM duty value for 60 milliseconds.
413 D 2nd transfer (paper transfer) disconnection (–)
Paper transfer starts. → The negative (–) output is at the
maximum PWM duty value for 60 milliseconds.
G071
CÓPIA NÃO CONTROLADA
Symptom
4-4
CÓPIA NÃO CONTROLADA
Possible Cause
• Short circuit in the
image transfer unit
• Defective image
transfer belt
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Short circuit in the
image transfer belt
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Short circuit in the
paper transfer unit
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Short circuit in the
paper transfer unit
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Right cover not
closed
• Defective transfer
roller contact
mechanism
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
• Right cover not
closed
• Defective transfer
roller contact
mechanism
• Defective high
voltage supply board
• Defective harness
(BCU - high voltage
supply board)
SM