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LG CRD-8483B Service Manual page 17

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• IC201 (M63021FP) : Drive IC (Spindle/Servo Actuator)
Rotates the Spindle Motor by receiving MDP signal from IC501.
Generates the signal to drive Focus Actuator Coil, Tracking Actuator Coil, Sled Motor, and Stepping
Motor by Control Signal input from DSP and u-COM.
Block Diagram
FG
FG
HU+
HU-
HV+
HV-
HW+
HW-
Hall Bias
HB
SPIN
REF
SL1IN
SL2IN
FOIN
TOIN
5Vcc
Pin Description
Pin No.
Symbol
1
SL1IN
Slide control voltage input 1
2
SL2IN
Slide control voltage input 2
3
VM2
Motor Power Supply 3 (for Slide)
4
RSL2
Slide current sense 2
5
SL2+
Slide non-inverted output 2
6
SL2-
Slide inverted output 2
7
GND
GND
8
RSL1
Slide current sense 1
9
SL1+
Slide non-inverted output 1
10
SL1-
Slide inverted output 1
11
GND
GND
12
W
Motor drive output W
13
V
Motor drive output V
14
U
Motor drive output U
15
RSP
Spindle current sensie
16
HW-
HW- sensor amp. input
17
HW+
HW+ sensor amp. input
18
HV-
HV- sensor amp. input
19
HV+
HV+ sensor amp. input
20
HU-
HU- sensor amp. input
21
HU+
HU+ sensor amp. input
S
S
Reverse
Detect
120ß
MATRIX
Current
CTL
comp
amp
Direction
comp
x12
Description
S
Logic
CTL
Current
amp
comp
Direction
comp
Regulator
Reg
x12
Pin No.
Symbol
22
VM1
23
HB
24
FG
25
REF
26
SPIN
27
FOIN
28
TOIN
29
GND
30
5VCC
31
TO-
32
TO+
33
GND
34
FO+
35
FO-
36
LO+
37
LO-
38
BRS
39
VM3
40
LOIN+
41
MU1
42
OSC
S
Logic
Current
CTL
TSD
amp
comp
Direction
BIAS
comp
Frequency
generator
VM1
x8
Description
Motor Power Supply 1 (for Spindle)
Bias for Hall Sensor
Frequency generator output
Refernce voltage input
Spindle control voltage input
Focus control voltage input
Tracking control voltage input
GND
5V Power Supply (for FS, TS)
Tracking inverted output
Tracking non-inverted output
GND
Focus non-inverted output
Focus inverted output
Loading non-inverted output
Loading inverted output
Brake select control terminal
Motor power supply 3.(for Loading)
Loading control input( +)
Mute 1
PWM carrier oscilation set
MU1
OSC
BRS
LOIN+
VM3
LO-
LO+
15

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