Description: Charge corona unit cleaner error
• Cleaning starts. → The lock signal is not detected within 30 seconds. • Cleaning starts. → The cleaner starts to turn. → The lock signal is detected within 6 seconds. • The lock signal is detected while the unit is moving away from the home position. → The next lock signal is detected within 6 seconds after the unit has turned toward the home position.
Causes: • Defective PCU installation (OPC belt) • Defective cleaner • Incorrect charge corona unit installation • Toner fallen into the cleaner drive mechanism
Code: 350
Description: Development error 1 (K/Y)
A development process starts. → The returning voltage exceeds the target by 0.5 Volt or more for 60 milliseconds.
Causes: • Short circuit in the development unit • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)
Code: 351
Description: Development error 2 (C/M)
A development process starts. → The returning voltage exceeds the target by 0.5 Volt or more for 60 milliseconds.
Causes: • Short circuit in the development unit • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)
Code: 352
Description: 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.
Causes: • Defective development motor
Code: 400
Description: 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.
Causes: • Short circuit in the image transfer unit • Defective image transfer belt • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)
Code: 401
Description: 1st transfer (image transfer) electric leakage (–)
Image transfer starts. → The negative (–) output is at the maximum PWM duty value for 60 milliseconds.
Causes: • Short circuit in the image transfer belt • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)