Canon LBP351 Series Service Manual page 22

<Execution Timing>
At startup of the Laser Scanner Motor
<Control Description>
1. The DC Controller PCB forcefully rotates the Laser Scanner Motor.
2. Sends acceleration signals (ACC) and deceleration signals (DEC) to the Laser Scanner Motor to control the speed to the
specified speed.
<Related Error Code>
E110-0000: Failure of the Laser Scanner Unit
E110-0001: Error in the initial operation of the Scanner Motor
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2. Technical Explanation (Device)