Audio Block Diagram - JVC HR-J580EK Service Manual

4.17 AUDIO BLOCK DIA GRAM
MAIN ( VIDEO/A UDIO , TERMINAL )
0 3
5
TO
TUNER
R
DEMOD (R)
L
DEMOD (L)
RF A UDIO
TU A UDIO
J7105
FR ONT IN
8
A.IN (R)
7
6
5
A.IN (L)
4
3
4
ONLY USED FOR
HR-J780EU
FILTER
A.OUT(R)
1
A.IN(R)
2
A.OUT(L)
FILTER
3
A.GND
4
A.IN(L)
3
6
J7102
26 22 14 8 12 6 23
AV2(L-2) IN/DECODER
10 16 21 25 27
IC7101
FILTER
A.OUT(R)
1
A.IN(R)
2
2
R
A.OUT(L)
FILTER
3 L
A.GND
4
A.IN(L)
6
J7101
J7103
AV1 (L-1 ) IN/OUT
REAR OUT
4
R
A.OUT (R)
2
L
A.OUT (L)
1
1
Note : F or the w avefor ms in this b loc k diag ram , ref er to page 4-24.
A B
IC1
( VIDEO & AUDIO SIGNAL PROCESSOR )
WF1
77
+
78 TU
R
79 FR
INPUT
L1 SELECT
R
(R-CH)
80
L2
81
DEC (R)
NOT
68
USED
DEC(L)
67
MIX
57
MIX
NA IN
53 NA PB
WF2
LINE OUT (R)
62 R CH
R
64
NOT
OUTPUT R CH
USED LINE OUT (L )
SELECT
61 L CH
L
63
NOT
L CH
USED
NA REC
52
NORMAL
INPUT
WF3 SELECT
LOG(L)
65
NOT
LOG(R)
USED
66
82
NA EXT IN
71 TU
L
72
FR
INPUT
73 SELECT
L1
L
(L-CH)
74
L2
NOT
USED
75
+
HIFI
INPUT
SELECT L
HIFI
50
48
WF4
C D 4-31
92
A.MUTE(H)
93
A.FF
60
DATA
LOGIC 59
CLK
ENV DET
94
+
REC/PB
NOR DET
MON
NOISE
R 87
EVR REDUCTION
R
(R-CH)
PRE/REC AMP
HIFI
98
FM CH1
97
COMMON
96
CH2
NOISE
L
EVR REDUCTION
L
(L-CH)
SP ON
DET
115
116
P
-
+
R
PRE AMP
VCA
117
REC ON
118
EP(LP) ON
119
REC
EQ
4-32 E
A.MUTE (H)
A.FF
I2C D ATA
I2C CLK
WF6
A.ENV/ND (L)
Q2251
TP2253
Q2252
A.PB .FM
SW H.REC ST (H)
PAL PB (H)
N.REC (H)
N.REC ST (H)
FULL E.ON (H)
WF5
CN1
9 9
10 10
11 11
HR-J780EU
POWER
Q2062, Q2063
SW
Q2061
OSC
POWER
Q2052-Q2055
SW
6
TRANS 4
Q2051
OSC
T2052
FULL ERASE HEAD
CN2002
FILTER
5
1
TRANS
6
B2051
2
T2051
HR-J680EK/EU,J785EK
SW Q2001-Q2003
CN2001 CN1
4 4
3 5
2 6
FILTER 1 7
F G
( Sanwa ) -V14D1/D15/D1
E. & O. E. No. 82847
TO
SYSCON
U.DRUM
AUDIO HEAD
9
FMA CH1
10
FMA CH2
11
F. ERASE
1 2
A/C HEAD
A. ERASE
REC/PB
H