Description: LD error
An LD error continues for 0.5 seconds. (After an LD error is detected, an LD error release is written to the GAVD chip during monitoring.)
Causes: • Defective LD unit
Code: 280
Description: Image transfer belt mark detection error
• An imaging process starts. → No belt mark is detected within 1 revolution. • A color imaging process starts. → A mono color image is transferred. → FGATE becomes active. → No belt mark is detected within 1 revolution. • Thick paper or OHP film is used. → The belt slows down. → No belt mark is detected within 1 revolution.
Causes: • Defective BICU • Poor electrical connection between sensor and BICU
Code: 282
Description: GAVD communication error
Data is transferred. → The CPU does not detect the communication signal from GAVD.
Causes: • Defective BICU
Code: 300
Description: Charge corona unit electrical leak
The supply to the charge corona unit is continuously output, and the unit is operating at the minimum PWM duty value. → 4.5 Volts (or more) returns for 60 milliseconds.
Causes: • Short circuit in the charge corona unit • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)
Code: 301
Description: Charge corona unit disconnection
The supply to the charge corona unit is continuously output. → The unit operates at the maximum PWM duty value for 60 milliseconds
Causes: • Defective PCU installation (OPC belt) • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)
Code: 302
Description: Charge grid electrical leak
The supply to the charge grid is continuously output. → The returning voltage exceeds the target by 0.5 Volt or more for 120 milliseconds.
Causes: • Defective PCU installation (OPC belt) • Short circuit in the charge grid • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)