Panasonic SC-AK48, Service Manual

Page: 54 / 104

11
20
12
13
14
15
16
17
18
19
2
1
3
4
5
6
7
8
9
10
CD Lch
A.GND
CD Rch
D.GND
+B(2)
P.GND
+B(4)
MIC
M.GND
CHG AD1
CP605
TX
+B(1)
SD
SER3
/CD
MUTEA
P.CONT
LVL1
CHG AD2
SER5
11
12
13
14
15
16
17
18
19
2
1
3
4
5
6
7
8
9
10
+B
SPEANA
SW5V
CHG PLGR
VREF+
PLL DA
PLL CE
CHG HALF
CHG CCW
CHG CW
CP604
DC DET
PLL CK
ST.DO
LVL2
GND
-VP
HP.GND
HP.Rch
SER4
SW1
26
20
21
22
23
24
25
a
F
E
D
C
B
L
N
M
K
J
d
a
b
E
R962
2.7K
R984
1K
R953 2.7K
R921
5.6K
D
f
C
B
A
S
Q
I
H
G
R
Y
A
O
Z
HP.Lch
HP.SW
SW2
2
1
3
4
5
SYNC
FL1
FL2
SYS6V
ECONO
H601
6
U
T
A B C
D.GND
IC603
M62457FPE1
SPE.ANALYZER AMP
16
1
15
2
14
3
13
4
12
5
11 10 9
6 7 8
GND2
B
Vcc/2
VREF
IREF DIF
OUT
C
OUT
CN
F
A
OUT
ANF
A
Vcc
C
PHOUT
GND1
ENB
R942 100K R969 100K
C649
16V10
C648
50V0.1
R912 100K
C669
50V0.1
C668
50V0.1
C650
0.01
C667
0.01
C671
0.1
P V X W
FL600(RSL0295- F)
1 2 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 46 47
FL DISPLAY
3 44 45 48 49 51 52 53 5
C612
35V22
C660
50V3.3
R922
68
R925
68
L605
100 H
D636
MA4020LTA
R907 100K
R701
330
A B C D E F G H I J K L M N O P Q R S T U V W A B C D E F G H I J K L M N O P Q R S T X U V
C653
10V330
C634
35V22
R914
100K
L604
100
H
D637
1SS291T
A
A
B
C
Q605,606
KTC3199GRTA
FL DRIVE
Q605 Q606
R699
220
R901
220
R903
220
R905
220
R906
220
R908
150
R909
220
R698
330
R913
330
R952
330
R915
330
R664 100K
R665 100K
R666 100K
R667 100K
R668 100K
R669 100K
R670 100K
R671 100K
R672 100K
R673 100K
R674 100K
R675 100K
R676 100K
To MAIN(DSC)
CIRCUIT
(CN303)
on SCHEMATIC
DIAGRAM-9
E
SCHEMATIC DIAGRAM-15
To MAIN(DSC)
CIRCUIT
(CN302)
on SCHEMATIC
DIAGRAM-10
E
To POWER
TRANSFORMER
CIRCUIT(CN502)
on SCHEMATIC
DIAGRAM-18
M
R643
4.7K
C607
100P
C605
1000P
C603
50V1
R632
8.2K
R637 330K
C608
1000P C610
10V100
R620
330K
C602
0.047
R628
47
Q600
2SC1740SSTA
MIC AMP
Q601
KTC3199GRTA
MIC AMP
Y
X
C600
50V0.33
R963
560
C686
0.01
R619
220
C609
50V1
VR601
(MIC VOLUME)
R651
100
5V
5V
5V
0V
(0.3V)
2.5V 1.5V 2.5V 2.5V 2.5V 2.5V 2.5V
5V 2.4V 2.4V 2.4V 5V
-27.7V 4.2V
-28.2V
-27.7V 4.2V
-28.2V
:NEGATIVE VOLTAGE LINE
:POSITIVE VOLTAGE LINE
5.8V
8.5V
:CD PLAYBACK SIGNAL LINE
0.7V
1.4V
0V
5.5V
7.3V
5.1V
:MIC SIGNAL LINE
SA-AK48
54