Laser Exposure System; Functional Configuration; Failure Detection - Canon MF735C Series Service Manual

Laser Exposure System

Functional Configuration

Overview
The Laser Exposure system irradiates the Photosensitive Drum with a laser to form a latent image on it according to the video
signal sent from the Main Controller.
Description
The Laser Scanner Unit consists of the Laser Unit and the Scanner Motor Unit, and is controlled by the signal input from the DC
Controller.
No.
[1] Laser Unit
[2] BD Sensor
[3] Scanner Mirror
[4] Scanner Motor Unit
[5] Photosensitive Drum (Y)

Failure Detection

Overview
The DC Controller detects the following failures in the Laser Scanner Unit.
• Scanner area failure
• Scanner Motor startup failure
[2]
[1]
[5]
[6]
[7]
Name
[3]
[4]
[8]
[9]
No.
[6] Photosensitive Drum (M)
[7] Photosensitive Drum (C)
[8] Photosensitive Drum (Bk)
[9] DC Controller
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22
2. Technical Explanation (Device)
Name