Apc(Auto Power Control) Control; Apc Control - Canon imageRUNNER ADVANCE C3500 III Series Service Manual

Table of Contents

2. The Y/M Laser Driver PCB controls the Scanner Motor rotation speed to be constant by referring to the Scanner Motor rotation

speed signal (FG signal).

(From when the Scanner Motor starts rotation until it reaches the target revolutions and the machine starts image formation

3. When the laser beams are emitted at image formation, the BD Sensor of the C/Bk Laser Driver PCB detects the BD signal

and inputs it to the Y/M Laser Driver PCB.

4. The Y/M Laser Driver PCB controls the Scanner Motor control signals (acceleration signal: ACC, deceleration signal: DEC)

based on the input timing of the BD signal to control the Scanner Motor rotation speed.

Related error code

• E100-0001: BD error

• E110-0001: Scanner Motor error (FG lock error at startup)

• E110-0002: Scanner Motor error (BD speed lock error at startup)

• E110-0003: Scanner Motor error (BD phase lock error at startup)

APC(Auto Power Control) control

Ensures constant laser beam light intensity for each line.

Execution Timing

For each line (before writing the image)

Control description

1. The Y/M Laser Driver PCB outputs the APC signal to the Laser Driver IC on each Laser Driver PCB.

2. Technology