BenQ 2720S Service Guide - Page 23
Electrical Systems
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Chapter 5 Electrical Systems 5.1 Overview The overview of electrical systems of film scanner is shown in Figure 5-1. Power Board Host Computer SCSI Interface Cable MainBoard ASIC Scanner Controller Analog Circuits ICE Function CCD module CCD,Inverter,Lamp, Home Sensor Elements (Line motor) Figure 5-1 Electrical Systems Overview The 2740S scanner is composed of 7 PCB boards: Power board, Main board, CCD board, Inverter board., LED board, Panel board and Sensor board . Through functional partitions, the whole scanner system can be divided into 6 parts : ASIC Scanner Controller, Analog Circuits, CCD Module, Power supply and Inverter,, ICE Function and other Elements (including line motor, home sensor, Lamp...etc). They are all shown in figure 5-1. 5.1.1 Functional Overview The whole scanner system can be divided into 3 main modules as shown in figure 5-2. The scan module is composed of the CCD board and Lamp. Electrical Systems API Confidential 5-1 No Copy/Reproduction allowed