Block Diagram - Panasonic SA-AK18 Service Manual

14 Block Diagram

OPTICAL PICKUP
SEMICONDUCTOR
LASER
POWER DRIVE
+B
PHOTO DETECTOR
E E
D C
A B
D C
F F
TRACKING FOCUS
COIL COIL
T+ T- F+ F-
IC703
AN8739SBE2
FOCUS COIL/
TRACKING COIL/
TRAVERSE MOTOR/
SPINDLE MOTOR
DRIVE
D4+
18
D4-
17
16
D3+
15
D3-
D1+
12
_ M
TRAVERSE
MOTOR 11 D1-
14 D2+
_ M
SPINDLE
13 D2-
MOTOR
9
PGND1
20
PGND2
IC701
AN8839NSBE2
SERVO AMP
6
+B
LPD
Q701
+B
7
LD +
LASER
-
+B
+B
4
PDA
+B
13
LDON
+B
PDB
+B
1
PDE
-
+
+B
+B
2
PDF
-
F
+
+B
47
ARF
IC702
DSL
44
MN662790RSC
SERVO PROCESSOR
/DIGITAL SIGNAL
SYNCHRONIZING
PROCESSOR PROTECTION
/DIGITAL FILTER
/D/A CONVERTER
BDO 39 BDO
SERVO
INPUT
/RFDET 38 /RF DET
PORT
RFENV 34 RF ENV
FE 32 FE
TE 33 TE
OFT 36 OFT
37 TRCRS
35 VDET
VREF 29 VREF
TBAL 31 TBAL
FBAL 30 FBAL
41 PLLF2
D/A
43 WVEL
CONVERTER
42 DSLF2
LDON 40 LDON
/RST 1
27 28 22
RESET
SIGNAL
VREF 24
GEN.
+B
FOCUS
IN3 26
COIL
DRIVE
TRACKING
25
IN4
COIL
DRIVE
6
IN1
TRAVERSE
MOTOR
DRIVE
IN2 3
SPINDLE
MOTOR
PC2 4
DRIVE
8
PVCC1 +B
21
PVCC2
23
VCC
+B
10
8 9
RF RFIN CSBRT
OFTR
DET.
-
RF
+
DET.
-
Ach
A
+
VCBA Subtracter
-
B Bch
+
+B
Vref
+B
Subtracter
Ech
-
+
VCBA +B
+B
+B
Fch
27 28 22 16
+B
+B
48 4 80 50 60 72
SYNDROME
CALCULATION
PHASE FREQUENCY
COMPARATOR COMPARATOR CIRC
DECODER
VCO
INTERPOLATION
EFM
/SOFT MUTING
DATA
/DIGITAL
DEMODULATOR
ATTENUATION
SYNCHRONIZING
16K
INTERPOLATION
SRAM
PROTECTION
PEAK
RAM
DETECTOR/
ADDRESS
AUTO CUE
GENERATOR
SUB-CODE
CLV
DEMODULATOR
SERVO
CRCC
CHECK
SERVO
CPU
CRCC
CHECK
SERVO OUTPUT
PORT
25 26 21 24 23 10 11 12 18 13 14 15
25
RF
+B
11
CEA
19
ENV
3 ENV
TENV
17
OFTR
OFTR
12
BDO BDO
BDO
DET.
/RFDET 15
/RFDET
FEN 25
FEOUT 24
- FE
+
VCC 3
+B
VREF 26
-
+B
+
14
GND
+B
-
+ N.C. 18
-
+
23 21
TX 6
DIGITAL AUDIO
INTERFACE
DMUTE
16
-B
X2 59
X701
S/P
CONVERTER
X1 58
TIMING
GENERATOR SMCK 19
DIGITAL DE-EMPHASIS
/PITCH
CONTROL
RSEL 76
+B
DIGITAL FILTER
VREF 29
+B
OUTL 73
+
CD SIGNAL
-
OUTR 75
+
R CH
-
(CD SIGNAL)
SUBC 55
56
SBCK
5
DVSS1
MIRCOMPUTER
20
INTERFACE
CSEL
78
PSEL
79
NSEL
62
/CLDCK
17 8 7 9
+B
S701(RESET)
E
SA-AK18