Audio Block Diagram (Vhs) - JVC SR-VS20E Service Manual

AUDIO BLOCK DIAGRAM (VHS)

4.39
TO 0 3 MAIN ( VIDEO/AUDIO, AUDIO I/O, CONNECTION )
TUNER
R
DEMOD(R)
DEMOD(L)
TU_AUDIO
3 6 A J CK
NOT
USED
FRONT IN
CN7507
CN7002
5
FRONT_A(R)
2
J7003
9 9
3
FRONT_A(L)
R_IN
1 8 8
2
J7004
3
L_IN
1
NOT
USED
TO DV MAIN
(AUDIO AD/DA)
CN3701
CN2601
R
DV_A_PB(R) 2
L
DV_A_PB(L) 4
DV_A_REC(R) 6
DV_A_REC(L)
8
DV_A.MUTE(H)
4
7
R
5
L
BIL_SEL/DEC(H)
OUT2_D(H)
3
0 6 TERMINAL
J7104
AV2 IN/DECODER
6
A.IN(L)
4
A.GND
3
A.OUT(L)
2
A.IN(R)
1
A.OUT(R)
J7102
2
AV1 IN/OUT
5 3 IC2608
6
AMP
A.IN (L)
7 1
4
A.GND
3
(L)
A.OUT
2
A.IN (R)
1
A.OUT(R)
REAR OUT CN7104 CN7504
J7105
11
4
A.OUT(R) 10
3
9
8
1 7
2
6
A.OUT(L)
1 5
4
3
2
Note : For the waveforms in this block diagram, refer to page 4-71.
A B
L
5 3 IC2605
IC2606
15
AMP
11
13
7 1
R
14
12
+ 77
5
78 TU
R
1 79 FR
3
L
80 L1
4 R
9
81 L2
2 10
FRONT(H)
WF1 DEC(R)
68
IC2610
DEC(L)
2
67
15
1
MIX
57
12 NOT
MIX
14
USED
13
NA IN
53
9,10,11
WF2
LINE OUT(R)
IC2609
62
11 R
64
9
NOT
LINE OUT(L)
USED
8
61
L
1
63
NOT
3
USED NA REC
52
4 NORMAL
INPUT
WF3
OUT1_D(H) SELECT
LOG(L)
IC2607
65
9
NOT
11
USED
10
12 LOG(R)
13 66
14
NOT
15 82
USED NA EXT IN
5
71
TU
L
4 NOT
72
FR
3 USED
1
73 L1
L
2 74 L2
75
INPUT_SEL_A
INPUT_SEL_B +
11
12
13
14
15 NOT
USED
50
5
4
48
3
1
9
2 NOT
10
USED WF4
IC2601
IC2602
3 1
AMP
5 7
IC2603
11 NOT
USED
12
13
14
15
5
NOT
4
3
USED
1
9
2
10
D_VHS(H)
D_TU(H)
L
R
C
IC1
( VIDEO & AUDIO SIGNAL PROCESSOR )
INPUT
SELECT
( R-CH )
LOGIC
REC/PB
MON
NOISE
REDUCTION
EVR
( R-CH )
NA PB
R CH
HIFI
R CH
OUTPUT
FM
SELECT
L CH
L CH
NOISE
EVR REDUCTION
( L-CH )
SP
DET
INPUT P
SELECT
( L-CH )
R
PRE
VCA
REC ON
HIFI
INPUT
SELECT
HIFI
EP(LP) ON
REC
EQ
D E
4-83 4-84
92
A.MUTE (H)
93
A.FF
60
DA A T
59
CLK
ENV DET
94
+
NOR DET
TP2253
A.PB_FM
Q403- POWER
87
Q405 SW
SW
Q2251
Q2252
Q401
PRE/REC AMP WF7
AMP
Q402
98
CH1
97
COMMON
96
CH2
WF6
POWER
Q2062
SW
Q2061
OSC
ON
6
115
TRANS 4
116 FIL TER
-
T2052
+
POWER Q2052-
AMP
Q2054
SW
+
117 Q2051
OSC
118 5
TRANS 6
T2051
119
FIL TER
WF5
F
A.MUTE(H)
A.FF
I2C_DATA_A/V
I2C_CLK_A/V
A.ENV/ND(L)
H.REC_ST(H) TO
PAL_PB(H) SYSCON
FULL_E_ON(L)
N.REC_ST(H)
N.REC(L)
FLY_ON(H)
FLY_REC(H)
FL YING
U.DRUM
ERASE HEAD
12 13 13
FL .E Y
13 14 14
9 9
9
FMA_CH1
10 10
10
11 11
FMA_CH2
11
12 12
A UDIO HEAD
FULL ERASE HEAD
CN2002
2
. F ERASE
1
1 2
A/C HEAD
CN2001 CN1
4 4
A. ERASE
3 5
2 6
REC/PB
1 7
G H