Philips VR1200/39 - Audio Block Diagram

4-53 4-54
AUDIO BLOCK DIAGRAM
HGFEDCBA
4
5
3
2
1
4.26
SELECT
OUTPUT
4
66
AV2 IN/DECODER
)
A.OUT
A.GND
R
A.OUT
A.GND
A.OUT
R
A.OUT
J902
(
A.IN
2
4
A.IN L
(
6
2
A.OUT
(
L
)
J912
REAR
A.OUT
(
R
)
1
2
1
J913
REAR
A.IN
(
2
1
)
R
1
()
L
(
3
)
CN907
6
3
2
5
4
CN917
7
8
)(
R
)
L
(
)
1
3
IN
48
50
+
74
75
73
72
L2
L1
FR
71
82
NA EXT
TU
SELECT
INPUT
SELECT
(L-CH)
INPUT
TERMINAL
)
2
DISPLAY
A.IN L
(
6
06
(
(
AUDIO
AUDIO
FRONT
J7191
9
)
L
)
R
5
4
6
7
IN
8
AV1 IN/OUT
J901
SYSCON
TO
IND
(
L
)
IND
(
R
)
F.AUDIO
(
L
)
F.AUDIO
(
R
)
5
7
8
CN7191
3
1
CN902
TUNER
TO
DEMOD
(
L
)
TU_AUDIO
DEMOD
(
R
)
67
L
R
64
52
LOG
65
RLOG
()
L
()
63
61
RECNA
LINE OUT
(
53
62
LINE OUT
(
57
MIX
INNA
NORMAL
INPUT
SELECT
)
)
MIX
77
+
81
L2
68
LDEC
()
RDEC
()
80
79
78
L1
FR
TU
(R-CH)
SELECT
INPUT
IC1
(
VIDEO
MAIN (VIDEO/AUDIO
,
CONNECTION)03
3
CN2002
EQ
REC
HIFI
HIFI
VCA
)
DET
L-CH
(
EP
(
LP
)
ON
ONREC
R
P
AMP
+
-
PRE
ONSP
TRANS
+
FILTER
119
117
118
FILTER
116
115
Q2061
T2052
4
6
OSC
A/C
1
2
1
4
3
6
7
4
5
CN2001 CN1
HEAD
2
TRANS
ERASEFULL
2
1
4
5
HEAD
T2051
A.ERASE
REC/PB
F.ERASE
CN2051
A.MUTE
AMP
RCH
EVR
LCH
LCH
REDUCTION
NOISE
NA PB
RCH
EVR
REDUCTION
NOISE
)
R-CH
(
HIFI
CH1
FM
CH2
COMMON
MON
PRE/REC
NOR DET
PROCESSORSIGNALAUDIO&
REC/PB
DATA
ENV
LOGIC
DET
+
CLK
)
POWER
Q2251
97
96
Q2062
A.FM
TP2253
98
87
SW
POWER
SW
POWER
SW
SW
Q2052-
Q2054
59
94
60
93
92
A.FF
9
AUDIO ERASE
12
11
10
2
1
6
64
11
10
Q2051
OSC
12
11
10
9
U.DRUM
9
14 14
13
13
12 13
FMA_
F LY. E
FMA_
HEADAUDIO
CH2
CH1
I2C_CLK_A/V
N.REC_ST
(
H
)
H.REC_ST
(
H
)
A.ENV/ND
(
L
)
FULL_E_ON
(
L
)
N.REC
(
L
)
FLY_REC
(
H
)
FLY_ON(H)
SYSCON
TO
I2C_DATA_A/V
A.FF
A.MUTE
(
H
)
NOT
USED
AMP
CN1
FLYING
ERASE
Q403-
Q405
Q401,
Q402
(Sanwa)-V14S1
R
L
R
R
L
L
L
R
R
L
L
R
L
R
R
L
L
R
R
L
R
L
L
L
R
L
R
L
R
R
L
L
L
L
R
R
R
R
WF1
WF2
WF3
WF4
WF7
WF6
WF5
Note : For the waveforms in this block diagram, refer to page 4-42.
www.freeservicemanuals.info
3/3/2019
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