LG CRD-8402B Service Manual page 17

• IC201 (M63020FP) : 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
CTL
amp
SPIN
REF
SL1IN
SL2IN
FOIN
TOIN
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
120˚
MATRIX
Current
amp
comp
Direction
comp
X8
Description
S
Logic
CTL Current
comp
Direction
comp
Regulator
Reg
X12
Pin No. Symbol
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39 LOIN+
40
41
42
S
Logic
Current
CTL
TSD
amp comp
Direction
BIAS
comp
Frequency
generator
VM1
5V power supply
X5
Description
VM1 Motor Power Supply 1 (for Spindle)
HB Bias for Hall Sensor
FG Frequency generator output
REF Refernce voltage input
SPIN Spindle control voltage input
FOIN Focus control voltage input
TOIN Tracking control voltage input
GND GND
5VCC 5V Power Supply (for FS, TS, LO)
TO- Tracking inverted output
TO+ Tracking non-inverted output
GND GND
FO+ Focus non-inverted output
FO- Focus inverted output
LO+ Loading non-inverted output
LO- Loading inverted output
BRS Brake select control terminal
Loading control input(+)
LOIN- Loading control input( - )
MU1 Mute 1
OSC PWM carrier oscilation set
MU1
OSC
BRS
LOIN-
LOIN+
5VCC
LO-
LO+
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