[A]: Surface

[B]: Reverse side

 

FU No.

Fuse

Function

Symptom, Cause, Action

FU1

Microfuse

Overcurrent protection for DF Clutch

Symptom

  • DF Unit does not turn on.

Cause

  • There is a short in the Controller Board, or a fuse blows caused by a GND short in the harness.

Action

  • Replace the Controller Board.
FU2MicrofuseOvercurrent protection for Controller Board

Symptom

  • MFP does not turn on.

Cause

  • There is a short in the CTL PCB, or a fuse blows caused by a GND short in the harness.

Action

  • Replace the Controller Board.
FU3Microfuse

Overcurrent protection for Scanner CIS LED.

Symptom

  • Scanner Unit does not turn on.

Cause

  • There is a short in the CTL PCB, or a fuse blows caused by a GND short in the harness.

Action

  • Replace the Controller Board.
FU5Microfuse

Overcurrent protection for DF CIS LED.

Symptom

  • DF Unit does not turn on.

Cause

  • There is a short in the Controller Board, or a fuse blows caused by a GND short in the harness.

Action

  • Replace the Controller Board.
FU8MicrofuseOvercurrent protection for OPU.

Symptom

  • OPU does not turn on.

Cause

  • There is a short in the Controller Board, or a fuse blows caused by a GND short in the harness.

Action

  • Replace the Controller Board.
FU10Microfuse

Overcurrent protection for DF & Scanner CIS power.

Symptom

  • DF Unit and Scanner Unit do not turn on.

Cause

  • There is a short in the Controller Board, or a fuse blows caused by a GND short in the harness.

Action

  • Replace the Controller Board.