Service manual

FO-IS125N

5 – 10

2.1.4 Scanner I/F block

1) CIS I/F block

The CIS is controlled by Fax Engine (IC100), and the output video sig-

nal from CIS is input into AFE block of Fax Engine (IC100). CIS LED is

controlled through LED driving circuit (Q600) by Fax Engine (IC100).

2) Scanner Motor control

A3967SLBTR-T (IC600): pin-24 (Scanner Motor Driver)

The scanner motor is driven by this Motor Driver which is the constant

current motor driver with bipolar, chopper system the rotation speed

and its timing of the scanner motor are controlled by Fax Engine

(IC100).

CIS

Fax Engine

(IC100)

Image sensor

LED

LED Driving

circuit Q600

Video signal

AFE

BLOCK

CLK

Fig. 2

Fax Engine

(IC100)

Motor Driver

(

IC12)IC12

)

Scanner

Motor

Motor Driver

(IC600)

Fig. 3