Ic Block Diagram & Description - Sanyo DC-DA370 Service Manual

IC BLOCK DIAGRAM & DESCRIPTION
IC101 LA9241M (Servo Signal Processor)
Vcc1 LDS LDD BH1 PH1
64 63 62 61 60
APC
RF DET
FIN2 1
VCA
2
FIN1
I/V
3
E
BAL VCA
4
F
5
TB
TE
TE- 6
7
TE
8
TESI
T.SERVO & T.LOGICK
9
SCI
10
TH
11
TA
TD- 12
F.SERVO & F.LOGICK
TD 13
14
JP
15
TO
FD 16
17 18 19
FD- FA FA-
IC440 AN7348K ( Play/Rec Pre Amp)
24 23 22 21
A/Rec
Mute
B
PB Amp(L)
PB Amp(R)
A/Rec
Mute
B
2 4
1 3
g
LF2 VR REF1 Vcc2 FSS DRF CE DAT CL CLK
59 58 57 56 55 54 53 52 51 50
REF
-com
INTER FACE
RF Amp
SPINDLE SERVO
SLED SERVO
20 21 22 23 24 25 26 27 28 29 30
FE FE- AGND SP SPI SPG SP- SPD SLEQ SLD SL-
20 19 18 17 16
P
ALC
P
R
Rec
Amp(L)
Rec
Amp(R)
R
P
Logic
A/B
Logic
Rec/PB
5 6 7 8 9
IC103 LA6541 (Pick-up Actuator & Motor Driver)
Vcc Vref VIN4
DEF
24 23 22
49
11k
48
NC
Level
Sift
47 TBC
46 FSC
Level
DGND
45
Sift
44 SLI
11k
SLC
43
SLC
1 2 3
Vcc Mute VIN1
42 RFS-
41 RFSM
IC104 TA7291S( Bridge Driver)
40 CV+
39 CV- Vcc
SLOF 2
38
37 HFL
TES
36
35 TOFF
TGL
34
33
JP+
Protective Circuit
(Heat Interception)
31 32
SL+ JP-
9
IN1
IC443 BA7755A (Head Switch)
15 14 13
R
Nor/Cro
& Hi/Lo
Logic
Ripple
VCC
Rejection
10 11 12
- 14 -
VG4 Vo8 Vo7 GND Vo6
21 20 19 18
Vcc
BTL
Driver
BTL
Driver
4 5 6 7
VG1 Vo1 Vo2 GND Vo3
Vref
8
REG
1 5
IN2 GND
1 2 3
HEAD
CTRL2
GND
SWITCH
Vo5 VG3 VIN3 CD RES
17 16 15 14 13
11k
BTL Level
RESET
Driver Sift
BTL Level
Regulator
Driver Sift
11k
8 9 10 11 12
Vo4 VG2 VIN2 Reg OUT Reg IN
6 Vs
OUT1
7
3 OUT2
5
4
CTRL1