Motor Driving Circuit - Sanyo PLC-XU40 Service Manual

Chassis Block Diagrams

Motor driving circuit

3
PSCL
147
PSDA
D0-D7
K8S K6S
2
6,7
5
6
FOCUS+,-
3
11,12
3
4
ZOOM+,-
MAIN BOARD
Logic Table of Drive ICs (IC5501,IC5551)
Input
4
H
L
H
L
-38-
K6U
1
IC5551
4,5
FOCUS DRIVE
7
<BA6287>
1
IC5501
4,5
ZOOM DRIVE
7
<BA6287>
POWER BOARD
Output Operation
5 7 1
L L H Forward drive
H H L Reverse drive
H L L Braking Mode
L Open Open Standby Mode
FOCUS
1
M
2
ZOOM
3
M
4
1
1
2