Panasonic SC-HC20GA, Service Manual

Page: 87 / 115

87
17.3. MAIN CIRCUIT (2/4)
15 1 6 1 7 18 19 2 0 2 1 22 2 3 2 4 2 5 26 27 2 8
A
B
D
E
F
H
G
C
TO M A IN
S ECTION (1/4)
P1
TO
HE
A DPHONE/
A U X CIRCUIT
(P908) IN
S CHEM A TIC
DI A GR A M - 7
TO M A IN
S ECTION (4/4)
S C-HC 2 0G A /GN M A IN CIRCUIT 3/4 4/4
1/4 2 /4
TO
BRIDGE
2
CIRCUIT
(P90
6 ) IN
S CHEM A TIC
DI A GR A M - 8
S CHEM A TIC DI A GR A M - 3
M A IN CIRCUIT
1
2
3
4
5
6
8
7
: +B S IGN A L LINE : A UDIO OUTPUT S IGN A L LINE : CD A UDIO INPUT S IGN A L LINE : A M/FM S IGN A L LINE : iPod/iPhone/ A U X A UDIO INPUT S IGN A L LINE
R5 R8
R4
18K
R3
8. 2 K
C1 2
S WITCH
Q R 2
B1GBCF JJ 0051
L4
L 2
C1 6
C 2 1
C9
C11
C15
D A MP_BP
C10
D A MP_ S TB Y
4 7 K
R10
C5
V CC_GND
C1 1
22 K
R11
0.1
C 2 4
C3 1
C 2 1
C 6
R1 2
100K
R9
J 0 JY B0000013
C4 1
MUTE_ A MP
Q R4
B1GBCF JJ 0051
Q R4~ Q R5
0
R 2
C18
R1
Q R5
RCH
LCH
PDET 2
R 6
R 7
R4 6 0
B1 A BCF0001 76
Q 104
R449
C4 67 C4 66
0.33
R451
4 7 K 4. 7 K
R45 2
RCH
L10 7
27 K
R4 6 4
R450
5 6 0
C 26
1000p
C4 6 8
0.1 2
R 2 5 2
4. 7 K
R 26 5
4. 7 K
4 7 K
R 2 51
2 . 2 K
R1 2 5
1000p
C1 2 0
C1 2 1
1000p
L10 6
A MPLIFIER
A MPLIFIER
4. 7 K
R1 26 C119
22
C 267
0.33
Q 103
B1 A BCF0001 76
C 266
0.33
R 2 49
LCH
5 6 0
R 2 50
L105
27 K
R 26 4
4 7 0P
C 26 9
4 7 0P
C4 6 9
C 2 5
1000p
C 26 8
0.1 2
R4 6 5
4. 7 K
R 26 0
HP_L
HP_GND
MPORT_L
V CC_GND
MPORT_ S W
MPORT_R
R
26
3
1K
R1 2 4
3
2 5
4
1 6
Q 10 2
B1GFGC AA 0001
HP_ S W
R4
6
3
HP_R
C 26 5
C4 6 5
33
R4 6 1
1K
R1 2 1
1K
R1
2
3
1K
R1
22
R4 62
33
3
2 5
4
1 6
Q 101
B1GFGC AA 0001
33
R 26 1
R 262
MUTING S WITCH
MUTING S WITCH
33
HP_L
HP_R
5
6
1
3
4
2
8
7
P10 2
HP_GND
L108
V CC_D A MP
V CC
V CC_GND L1
L1
G0 A22 0G A 000 2
C55 C54 C53 C
6
3
0.01 0.01 0.01 0.01
L 7
J 0 J KB00000 2 0
2
4 3
1
G0B9R5K0000 7
L5
2
1
4
3
P 2
C19
C14
C 2 0
2
4 3
1
L 6
G0B9R5K0000 7
C 2 3
0.01
C 22
0.01
C1 7
C
7
C8
C13
L3
G0 A22 0G A 000 2
0.4 7
2 3
22 2 1
2 0
2 5
2 8
2 9
30
31
3 2
33
35
3 6
3 7
38
39
40
41
4 2
34
27
26
2 4
10
11
5
3
1
2
4
9
8
6
7
18
19
1 6
14
1 2
13
15
1 7
IC1
IC1
C1 A B00003 2 8 2
Rch LO-
Lch LO+
Rch LO+
Lch LO-
0.4 7
0.4 7
10
10
0.4 7
7 4 . 0
33K
100K
V D A 1
1 6V22 00
HB A2
NC
0.4 7
0.4 7
10
1K 4 7 K
0.4 7
V D
S UB
HBB1
OUTB 2
S UB
HBB 2
V DB 2
CLK
RREF
VS B 2
TE S T1
G A IN1
G A IN 2
V DB1
RO S C
D V DD
RLMT
VS B1
TE S T 2
OUTB1
S UB
NC
HB A 1
S UB
0.4
7
0.4
7
OUT A2
0.4 7
OUT A 1 V D A2
J 0 JY B0000013
MUTEL
1K
V REF
PROT S TB Y L
GND
POWER A MPLIFIER
IN V ERTER
HP_ S W
A GND
HP_L
HP_R
HP_GND
MPORT_L
MPORT_R
MPORT_ S W
AV CC
0.1
IN A2 IN A 1
INB 2
INB1
100K
100K
0.01
0.01
100K
J 0 JY B0000013
100K
VSA 1 VSA2
J 0 JY B0000013
L105
J 0 JY B0000013
0.33
L10 7 ,L108
J 0 JY B0000013
L4
G0 A22 0G A 000 2
0.4 7
L 2
G0 A22 0G A 000 2
K 6 ...G A
0
K5...GN
0