JVC HR-J271MS Service Manual page 136

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AUDIO BLOCK DIAGRAM [HR-J677MS , HR-J777MS]
4.28
MAIN (VIDEO/AUDIO , TERMINAL)
0 3
5
TO
TUNER
DEMOD (R)
DEMOD (L)
TU AUDIO
RF AUDIO
J7105
FRONT IN
8
AUDIO(R) 7
6
J7105
FRONT IN
5
4
AUDIO(L) 4
3
J7104
REAR IN
6
AUDIO(R) 5
4
AUDIO(L) 3
1
3
TO
SYSCON
IND(L)
IND(R)
2
J7103
REAR OUT
6
AUDIO(R)
4
AUDIO(L)
1
1
A
IC1
( VIDEO & AUDIO SIGNAL PROCESSOR )
+ 77
78 TU
79 FR
INPUT
80 SELECT
L1
NOT
USED (R-CH)
81
L2
DEC(R)
68
NOT
DEC(L)
USED
67
MIX
57
MIX
NA IN
53
LINE OUT(R)
62
64
OUTPUT
LINE OUT(L)
SELECT
61
63
NA REC
52
NORMAL
INPUT
LOG(L) SELECT
65
LOG(R)
66
82
NA EXT IN
71
TU
72 FR
INPUT
SELECT
73 L1
NOT
USED (L-CH)
74 L2
75
+
INPUT
SELECT
50
48
B C
A.MUTE(H)
A.FF
DATA
LOGIC
CLK
ENV DET
REC/PB
+
MON
NOR DET
NOISE
EVR REDUCTION
(R-CH)
NA PB
PRE/REC AMP
R CH
HIFI
CH1
R CH
FM
COMMON
L CH
CH2
L CH
NOISE
EVR REDUCTION
(L-CH)
SP ON
DET
P
-
+
R PRE AMP
VCA
REC ON
HIFI
HIFI
EP(LP) ON
REC
EQ
Digitized in Heiloo Netherland
D 4-55 4-56 E
92
A. MUTE(H)
93
A. FF
60
I2C DATA
59
I2C CLK
94
A. ENV/ND (L)
TP2253
Q2251
A.PB.FM
Q2252
87
SW
H. REC ST(H)
N. REC ST(H)
PAL PB(H)
N.REC(H)
CN1
98
9
97
10
96
11
POWER
Q2052-Q2055
SW
OSC Q2051
R2013-R2015
C2006,C2007
115
FULL ERASE HEAD
FILTER CN2002
116
5
2
TRANS 6
1
T2051
117
118
CN2001
4
3
R2017,C2011
2
119
FILTER 1
F G
E. & O. E. No.82811
4/5/2017
TO
SYSCON
U.DRUM
AUDIO HEAD
9 9
FMA CH1
10 10
11 11
FMA CH2
12 12
F. ERASE
1 2
A/C HEAD
CN1
4
A. ERASE
5
6
REC/PB
7
H
( Sanwa ) -V13A1/C1/D1/D15