Sharp FO IS125N - B/W Laser - All-in-One Service Manual page 101

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).
CIS
Image sensor
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).
Scanner
Motor
LED Driving
circuit Q600
LED
Video signal
Fig. 2
Motor Driver Motor Driver
(IC600)
(IC12)IC12 )
Fig. 3
5 – 10
52
Fax Engine
(IC100)
37
CLK
SI 53
47
AFE
BLOCK
Fax Engine
(IC100)
FO-IS125N