LG CRD-8161B Service Manual page 13

IC203 (M56759FP) : Servo Actuator Drive IC
Generates the signal to rotate Focus Actuator Coil,Tracking Actuator Coil and Sied Motor by PWM
Error Signal input from DSP.
Block Diagram
16
10k
5k
+
10k
5k
+
R2
5k
+
C1
10k
10k 12.5k 5k
12.5k
+
5V
5k
12.5k
+
5k
10k
12.5k
5k
10k
C2
+
5k
R4
+
5k
10k
+
5k
10k
+
M56759FP
+
10k 10k
+
+
4k
25k
12.5k
2.5k
+
12.5k
2.5k
12.5k
2.5k
+
12V
12.5k
2.5k
2.5k
12.5k
+
2.5k
12.5k
2.5k
12.5k
+
2.5k 12.5k
+
12V
+
10k 10k
+