Acer S2W 3300U Service Manual - Page 21

6 parts : ASIC Scanner Controller, Analog Circuits, CCD Module, Regulator and Inverter, and other Elements (including line motor, Lamp...etc). They are all shown in Figure 5-1. 5.1.1 Functional Overview The Scanner 3300U system can be divided into 3 main modules as shown in figure 5-2. The scan module is composed of the CCD board, inverter and Lamp. The main module is composed of the main board and the regulator board. This module is located at the bottom of Scanner 4300U. The I/O module is the USB and the line motor. Scanner 4300U System Block Diagram CCD Board Main Board USB port Inverter & Lamp Regulator Part Line Motor Scan Module Main Module Figure 5-2 I/O Module Figure 5-3 illustrates the operation of the Scanner 3300U. The light source