TV-20F242
TV-20F242
No.51768
No.51768
!
2-23
2-24
[SYSCON PCB HIFI CIRCUIT DIAGRAM]
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
IC5501
AN3662FBP
HIFI AUDIO/H.AMP/DEM
1
10
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
28
29
3
30
31
32
33
34
35
36
37
38
39
4
40
41
42
43
44
45
46
47
48
49
5
50
51
52
53
54
55
56
57
58
59
6
60
61
62
63
64
7
8
9
D5501
1SS133
L5503
82uH
C5552
10
16V
KA
C5518
3.3
50V
KA
C5526
4.7
25V
KA
C5525
10
16V
KA
C5535
1
50V
KA
C5527
10
16V
TT
+-10%
C5528
1
50V
KA
C5529
1
50V
KA
C5532
4.7
25V
KA
C5533
1
50V
KA
C5537
1
50V
KA
C5539
33
6.3V
KA
C5550
47
6.3V
KA
C5531
47
6.3V
KA
C5509
2.2
50V
KA
C5516
10
16V
KA
C5501
47
6.3V
KA
C5512
10
16V
KA
C5510
47
16V
KA
C5515
0.022
B
C5524
0.1
B
C5557
0.0015
B
C5558
0.0015
B
C5559
820P
B
C5556
0.0022 B
C5551
0.01 B
C5562
0.0022
B
C5554
470PCH
C5553
470PCH
C5544 0.01 B
C5543 0.01 B
C5506
0.1 B
C5507
0.1 B
C5508
0.1 B
C5530
0.1
B
C5522
24P
CH
C5514
0.33 B
C5502
0.1
B
C5519
1F
C5561
100P
CH
C5560
100P
CH
C5513
0.1 B
C5546 0.015 B
C5545 0.1 B
C5542 0.1 B
C5549 0.1 B
C5541 0.22 B
C5540 0.015 B
R5526
2.2K
R5525
2.2K
R5516
6.8K
R5508
6.8K
R5511
6.8K
R5505
6.8K
R5502
5.6K
R5501
15K 1/4W
R5510
33K
R5504
1K
R5519
1.5K
R5521
220
R5520
220
R5503
10M
R5512
2.7M
R5514
33K
1/4W
R5507
33K
1/4W
R5513
100
R5517
1K
R5506
33K
R5515
33K
C5523
4.7
50V
KA
C5547
10
16V
KA
C5548
10
16V
KA
C5538
10
16V
KA
C5536
10
16V
KA
C5534
33
16V
KA
W843
W953
W855_1
W930
W948
L5505
22uH
0305
L5504
22uH
0305
L5501
100uH
L5506
100uH
TP5501
HIFI ENV
TP5502
HIFI_H.SW
DURING PLAYBACK
MEASURED WITH THE DIGITAL TESTER
NOTE:
THE DC VOLTAGE AT EACH PART WAS
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
AUDIO SIGNAL(REC)
AUDIO SIGNAL(PB)
FSC
SDA
SCL
P.CON+5V
P.CON+5V
TU2_AUDIO
VCR_A_MUTE
FRONT_AUDIO_IN_R
FRONT_AUDIO_IN_L
REAR_AUDIO_IN_R
REAR_AUDIO_IN_L
AUDIO_OUT_R
AUDIO_OUT_L
AUDIO_OUT_L
AUDIO_OUT_R
V.REC_ST_H
TU2_AUDIO
TU1_AUDIO_A
AUDIO_OUT_R
HIFI_ENV
HIFI_H.SW
ST_SELECT
AUDIO_OUT_L
HF1
FSC
P.CON+9V
Y/C_AUDIO
HF2
HF_COM
NORMAL_A
NORMAL_A
Y/C_AUDIO
GND
P.CON+5V
P.CON+9V
GND
V.REC_ST_H
HIFI_ENV
HIFI_H.SW
SCL
SDA
ST_SELECT
VCR_A_MUTE
FRONT_AUDIO_IN_R
FRONT_AUDIO_IN_L
REAR_AUDIO_IN_R
REAR_AUDIO_IN_L
FROM/TO I/O
FROM/TO CHROMA/IF
NC
NC
NC
NC
2.6
2.6
NC
2.1
FROM/TO SOUND AMP
FROM/TO MICON
0
0.4
2.0
4.6
2.9
5.4
3.8
3.9
2.2
3.9
0
2.4
1.8
0.3
0
5.2
0
0
1.8
0
2.6
0.7
2.6
2.6
2.6
2.0
2.0
3.9
3.5
0
5.3
0
0
0.7
0
2.7
2.6
2.6
0.7
2.6
0.1
0
2.6
2.2
0
0.1
0
0.4
2.0
2.6
2.2
0.1
0.1
AMP
SW2
PNR LCH
DBX
NOISE REDUCTION
MUTE
DE-EMPH
75uS
SAP
SW22
R
MIX
L
SWITCH
(L.R)/SAP
LPF
DEMOD
SAP
DEMOD
L.R
PLL
SL
DET
PILOT
MATRIX
FILTER
STEREO
VCA
INPUT
-
-
+
AGC
HIFI
MIX
SW16
R
R
FROM 3PIN
FROM 1PIN
CURR
AMP
HA2
HA1
SW21
SW9
SW12
PB
REC
S/N
S/N
TIMING
HOLD
SW
LINER
BS
BS
HIFI
MIX
NORMAL
SW18
L
L
L
R
MUTE
SW19
SW17
R
L
SW4
SW10
SW14
SW13
L
H
SW11
SW15
DET
NOISE
HPF
DET
REC LPF
MIX
LCH VCO
REC LPF
VCO
RCH
SW NOISE
FM UM
LIMIT
AUDIO
LIMIT
AUDIO
PB LPF
PB LPF
PC
RCH BPF
LCH BPF
PC
SW NOISE
PNR RCH
CTL
ZZ-PROM
LOGIC
ADJ
VCO-F0
MUTE
LOGIC
VREF1
INPUT_SW(L)
INPUT_SW(R)
DEM_BLK
NC
1.8
0.7
1.1
2.6
0.2
4.6
9.0
4.5
AMP
DET
RFC
VMX188
PCB010
34
35
(SYSCON PCB)
HIFI SCHEMATIC DIAGRAM
FROM/TO POWER
FROM/TO
Y/C/A/H.AMP