Audio Block Diagram (Vr620/77, Vr625/77) - Philips VR407/77 Service Manual

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AUDIO BLOCK DIAGRAM [VR620/77 , VR625/77]
4.19
0 3
J1
REAR1 IN
6
A UDIO ( R )
5
4
AUDIO ( L )
3
5
1
J7101
FRONT IN
6
A UDIO ( R )
5
4
UDIO ( L )
A 3
1
J2
Q2201- Q2204
REAR OUT
6
R
4
AUDIO ( R )
MUTE
4
CONTROL
L
AUDIO ( L )
1
TO
TUNER
3
COMP
2
1
Note : For the waveforms in this block diagram , refer to page 4-25.
A
MAIN ( VIDEO/AUDIO , FMA/DEMOD )
10
R
EXT2 IN ( R )
WF1
15
L
EXT2 IN ( L )
22
9
CH1
R EXT1 IN ( R )
21
COM
24
14
CH2
L EXT1 IN ( L )
30
WF2
PB FM IN
53
R LINE OUT ( R ) 42
CLK
43
57
DATA
L
LINE OUT ( L )
36
MUTE CTL
48
SIF IN
62
61
NORMAL OUT
NORMAL IN
IC2201
WF5 WF6
53
DET
VCA
REC
EQ
IC1
( VIDEO/N.AUDIO SIGNAL PROCESSOR )
B C
TP2253
WF4
A.PB.FM
WF3
Q2251 , Q2252
SW
NOT
USED
63 62 61 78
A.MUTE
SP ON
95
R
FILTER
96
-
+
P
PRE AMP
97
+
REC ON
98
EP ( LP ) ON
99
FILTER
WF7
D 4-35 4-36 E
U.DRUM
CN1
9 9 9
10 10
10
11 11 11
12 12
TO
SYSCON
H.REC ST ( H )
I2C CLK
I2C D ATA
A.MUTE ( H )
N.REC ST ( H )
N.REC ( H )
POWER
Q2052-Q2055
SW
OSC
Q2051
FULL ERASE HEAD
CN2002
5
2
TRANS 6
1
T2051
1 2
A/C HEAD
CN2001 CN1
4 4
5
3
2 6
7
1
F G
( Sanwa ) -V14C1/D1
AUDIO HEAD
FMA CH1
FMA CH2
F. ERASE
A. ERASE
REC/PB
H