FU No.

Fuse

Function

Symptom, Cause, Action

FU1

Microfuse

Overcurrent protection for Toner Supply Solenoid circuit

Symptom

  • Toner is not supplied even though the remaining Toner in the Toner Cartridge is sufficient and supplying is performed.

Cause

  • There is a short in the solenoid, or a Fuse blows caused by the GND short in the Harness.

Action

  • Replace the EGB

FU2

Microfuse

Overcurrent protection for Duplex Inverter Solenoid circuit

Symptom

  • Duplex is not performed properly.

Cause

  • There is a short in the solenoid, or a Fuse blows caused by the GND short in the Harness.

Action

  • Replace the EGB

FU3

Microfuse

Overcurrent protection for LED Power supply

Symptom

  • LED error

Cause

  • Harness (+5V_LED) is shorted to GND.
  • Fuse blows caused by the GND short in the Harness.

Action

  • Replace the Operation Panel or EGB

FU4

Microfuse

Overcurrent protection for Operation Panel

Symptom

  • The Operation Panel does not work even though the power is turned on.

Cause

  • Harness (+5VX_OPU) is shorted to GND.
  • Fuse blows caused by the GND short in the Harness.

Action

  • Replace the Operation Panel or EGB