3.2Circuit Configuration

This scanner uses CCD image sensor scanning system. This scanner consists of following sections;

f Optical system (including fluorescent lamp, and lenses)

f Video circuit (including CCD sensor, amplifier, and A/D converter) f Scanner driver (including stepping motor and motor driver circuit) f Control circuit (MPU circuit)

f Power section

Figure 3.2 is the function block diagram of this scanner.

Controller

 

 

Control circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

Mechanism

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Video circuit

 

 

 

 

 

section

 

 

 

(MPU circuit)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Flatbed ADF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Image processing

Power section

circuit ¬ (option)

100 to 120 VAC

 

 

 

 

 

 

Power switch

 

 

 

Motor driver

 

 

 

 

 

 

220 to 240 VAC

 

 

 

circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operator panel

Figure 3.2 Function block diagram

50FH5037E>02

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