Block Diagram - Cd Charger Section - Panasonic SA-AK78 Service Manual

SA-AK78
13 Block Diagram
CD CHANGER SECTION
•
OPTICAL PICKUP
SEMICONDUCTOR
LASER
+B2
PHOTO DETECTOR
E E
D C
A B
D
C
F F
FOCUS COIL
F+
F-
TRACKING COIL
T+
T-
M
M701
TRAVERSE
MOTOR
M
M702
SPINDLE
MOTOR
AN8839NSBE2
IC701
SERVO AMP
6
LPD
Q701
Laser
7
LD
power
drive
+B2
4
PDA
13
LDON
5 PDB
1 PDE
E
Vref.
2 PDF
F
Vref.
AN8739SBE2
IC703
FOCUS COIL / TRACKING
COIL / TRAVERSE MOTOR /
SPINDLE MOTOR DRIVE
17 D4+
16 D4-
15 D3+
14 D3-
TRV+
11 D1+
TRV- 10 D1-
13 D2+
SP+
12 D2-
SP-
8
PGND1
19
PGND2
(RF)
TJ701
8 9
RF RFIN
Vref.
Vref.
Vref.
A Ach
Vref.
VCBA
B Bch
Vref.
Vref.
Vref.
Ech
VCBA
Vref.
Fch
27 28
22
VREF
FOCUS
24
IN3
COIL
DRIVE
TRACKING
IN4 23
COIL
DRIVE
TRAVERSE
IN1 6
MOTOR
DRIVE
3
IN2
SPINDLE
MOTOR
DRIVE
4
PC2
RESET
7
SIGNAL
PVcc1
GENERATOR
20
PVcc2
/RST
1
16
+B2 +B2
10 11
CSBRT CEA
3
OFTR
TENV
DET.
BDO
DET.
RF
DET.
SUBTRACTER
Vref.
Vref.
SUBTRACTER
Vref.
Vref.
22 16 23
+B1
ENV
19
RFENV
OFTR
17
OFT
BDO 12
BDO
/RFDET
15
/RFDET
FE IN 25
FE OUT 24
FE
V 3
CC
+B2
VREF 26
VREF
GND 14
VREF
(VREF)
TJ702
TRD
FOD
TVD
ECS
ECM
PC