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4.35
AUDIO BLOCK DIAGRAM (VHS)
0
3
MAIN ( VIDEO/AUDIO, AUDIO I/O, CONNECTION )
TO
TUNER
TU_AUDIO
3
DEMOD(R)
IC2601
5
AMP
DEMOD(L)
2 8
SW
FRONT IN
DISP
J7192
CN7191
CN7510
AUDIO(L) IN
F.AUDIO(L)
2
7
7
3
F.AUDIO(R)
8
1
8
J7193
AUDIO(R) IN
2
3
1
CN2601
DV_A_PB(R)
2
TO DV MAIN
DV_A_PB(L)
4
(AUDIO AD/DA)
CN3701
DV_A_REC(R)
6
DV_A_REC(L)
8
VHS_DUB(H)
INSEL_B
TO SYSCOM
INSEL_A
OUTSEL_B
OUTSEL_A
1
0 6
TERMINAL(I/O)
J901
AV2 IN/DECODER
1
7
A.OUT(R)
2
A.IN(R)
3
A.OUT(L)
4
A.GND
6
A.IN(L)
TRUTH TABLE OF
2
IC2602/IC2604/IC2606
J904
1
A.OUT(R)
LOW
HIGH
2
J903
LOW
1
A.OUT(L)
HIGH
J902
AV1 IN/OUT
CN901
CN7507
DEC_OUT(R)
9
1
A.OUT
1
DEC_OUT(L)
(R)
8
2
A.IN2(R)
2
7
3
A.IN2(L)
A.IN(R)
6
4
LINE_OUT(R)
3
5
5
LINE_OUT(L)
4
A.OUT(L)
4
6
A.IN1(R)
R
A.GND
3
7
A.IN1(L)
L
6
2
8
A.IN(L)
Note : For the waveforms in this block diagram, refer to page 4-56.
1
R
7
L
IC2602
12
11
13
5
82
1
NA EXT IN
14
15
IC2603
78
TU
R
AMP
1
7
WF1
4
79
FR
3
3
5
80
L1
2
R
9
A
+
77
10
B
R
81
L2
L
IC2606
1
WF2
LINE OUT(R)
5
62
R
3
R
2
4
LINE OUT(L)
61
L
12
WF3
14
13
NA REC
L
52
11
10
B
15
NOT
9
A
USED
MIX
57
MIX
64
63
65
LOG (L)
66
LOG(R)
IC2604
11
71
TU
L
72
15
FR
5
13
73
L1
L
14
74
L2
12
IC2605
75
AMP
4
+
2
3
3
5
9
A
1
10
B
50
SW
A.MUTE(H)
Q2602
67
DEC(L)
SW
Q2601
68
DEC(R)
A
B
ON SWITCH PIN No.
1, 12
LOW
LOW
5, 14
HIGH
2, 15
HIGH
4, 11
R
L
IC1
( VIDEO & AUDIO SIGNAL PROCESSOR )
INPUT
SELECT
( R-CH )
REC/PB
MON
NOISE
R
EVR
REDUCTION
( R-CH )
R
R
R
CH
R
R CH
HIFI
OUTPUT
FM
L
CH
SELECT
L
L
CH
L
L
NORMAL
NA PB
INPUT
SELECT
NOISE
L
EVR
REDUCTION
( L-CH )
DET
INPUT
P
SELECT
( L-CH )
R
VCA
HIFI
INPUT
SELECT
HIFI
REC
EQ
4-67
4-68
92
A.MUTE (H)
93
A.FF
60
DA A
T
LOGIC
59
CLK
ENV
DET
94
+
TP2253
NOR DET
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
SP
ON
6
115
TRANS
4
116 FIL
TER
-
T2052
+
Q2052-
POWER
PRE
AMP
Q2054
SW
+
117
Q2051
REC ON
OSC
118
5
TRANS
6
EP(LP) ON
T2051
119
FIL
TER
WF5
48
53
NA IN
WF4
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
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