8
7
SCHEMATIC DIAGRAM-2 (AUDIO/ VIDEO SECTION)
1
2
3
4
5
GND
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85 GND
Vcc
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
63
62
61
60
59
58
57
56
55
54
53
52
51
SW1
EP
ON
REC
EQ
BAND
GAP
SW6
SW40
SP
ON
PRE
AMP
SW3
REC
ON
SW2
P
R
VCA
SW5
SW4
From
ME
SECAM
DET
DET
SW39
SW38
SW37
SW36
SW35
SW34
SW33
SW32
SP2
SP1
SP2
SP1
SP1
SP2
SP1
SP2
VCA
SW31
SW30
CH2
CH2
SP
SP
SW29
CH1
CH1
REC
MUTE
P
R
629
TRAP
FM AGC
DET
P
EQ
Quasi-S
DL
SQPB
SQPB
SW8
G
EQ
DLIM
DEMO
Sub LPF
Main
De-emph
1M HPF
7M LPF
LAG READ
LPF
FM MOD
fo/Dev ADJ
S-DET
Main Emph
carrier Offset
W.C/DC
SW9
Y-LPF
P
P
R
R
SW10
SW11
FBC/ALC
N.L.
Emph
N.L.
De-emph
R
SQPB
SQPB
P
SW13
SW42
D.E.
N.C.
Edge.
Enhancer
REC
AGC Det
PB ALC
Video
AGC
YNR
SQPB EQ
SW14
DO
DO/
REC
Clamp
SW12
R
P
SW15
P
R
Clamp
LPF
ATT
(-10dB)
ATT
(-10dB)
ATT
(-10dB)
SW16
CCD-VCC
Mode
Control
SW17
P
R
Pulse
Gen.
Clock
Driver
Feed Back
Clamp
Video ALC
SQUELCH
White
Limiter
CLEAR
SYNC
Sync.Sep.
C.K
N P
B.D
C-SQUELCH
6db AMP
6db AMP
CCD
LPF
CCD-
CONT
LEVEL Det1
VCA
Serial Cont
Interface
LEVEL Det2
CLPF
Main
Conv2
Main
Conv1
P
R
SW24
CLPF
Delay
R
DL
SW25
SW41
P
R
SW26
SW23
R
P
R
P
SW22
P
R
BPF
SW21
4phase Gen
C-CCD
Y
-CCD
DO
Det
Edge
Delay
B.E
C.K
MIX
LEVEL
ADJ
TRAP
HPF
ACC
CTL TRAP
fH HPF
APC
SW
ACC
Det
1/2
Phase SW
DOWN
Conv.
REC
AFC
REC
APC
PB
APC
Color Killer
ID Det.
fH Sync
Control
2fsc
VCO
CR Det.
2fsc
CLOCK
LC VCO
C GND
C VCC
X-tal
VCO/OSC
PB/REC
Discri
ME
SECAM
DET
1/2
2FL VCO
P
R
SW20
SEP
COMP
SW19
R
P
SW18
TANK
KILLER
DET OUT
HEAD
SW1
HEAD
SW2
Control
ENV DET
HPF
COMP
LPF
SW27
L-SECAM
L-SECAM
2M LPF
SW28
DET
DET
SW7
CCD
1
2
3
4
NC
PB CH A
REC
PB CH B
Hi-Fi PB B
Hi-Fi REC
Hi-Fi PB A
5
6
7
SP PB CH1
SP REC
SP PB CH2
1
2
CTL(+)
CTL(-)
3
4
A/E(-)
A/E(+)
5
6
A.REC
A.PB
8
9
10
EP PB CH1
EP REC
EP PB CH2
8H
7H
9H
1
2
GND
FULL ERASE
6
5
4
1
2
3
1K
1K
2K
2K
R
R
11K
10K
9K
8K
7K
6K
1F
1F
2F
2F
6H
5H
4H
3H
2H
1H
1H
6H
12K
13K
5K
4K
3K
1C
3C
5.1VA
2C
5.1VD
GND
V.H/SW30
A.MUTE "H"
D-V SYNC
IIC CLOCK
IIC DATA
C.SYNC
V.ENV.
REC "H"
VIDEO
VIDEO(L2)
VIDEO(TU)
VIDEO(LINE)
JK301
VIDEO
OUT
IN
AUDIO-R(L1)
N.AUDIO
N.AUDIO
AUDIO(R)
AUDIO(L)
AUDIO-L(L1)
To
Hi-Fi
SECTION
To
TUNER/IF
SECTION
,
1C
3C
To
POWER
SECTION
To
SYSCON/
SERVO
SECTION
3K
13K
7H
9H
To
Hi-Fi
SECTION
CTL(-)
CTL(+)
To
SYSCON/
SERVO
SECTION
,
CTL
HEAD
AUDIO
ERASE
HEAD
FULL
ERASE
HEAD
AUDIO
HEAD
P3D02
P3D03
P3D01
To
CYL.HEADS
V.H/SW.30
84 V.ENV.
81
TP
(RF)
TP
(H/SW.30)
C357
0.033
C360
0.01
C361
0.01
C362
0.01
C363
0.01
C365
47/16
C364
0.01
C366
0.01
C367
0.01
C368
0.01
C369
0.01
C370
10/16
R328
2.2M
R307
10K
C301
0.01
R301
330K
R302
12K
C302
22/16
R303
220
C306
4.7/50
R306
22K
Q305
KTC3199
Q306
KTC3199
C310
0.1
C312
4.7/50
C311
22/16
R330
82K
R322
6.8K
C318
150P
R325
1.5K
R327
3.3K
C322
0.1
C324
10/16
C326
0.1
C328
10/16
C3F1
1/50
C319
0.1
R324
3.3K
C323
0.1
C325
0.1
C327
3.3/50
C330
2.2/50
C331
1/50
C332
0.1/50
C333
330P
C334
0.047
C335
220/6.3
L304
100u
C316
0.01
C317
47/16
L302
100u
C321
47P
L303
270u
C307
10/16
R314
4.7K
R315
2.7K
R341
2.2
R340
2.2
C314
0.033
C313
0.01
L301
100u
C315
47/16
VR301
100K
C329
270P
R339
10
R342
1.5K
R311
4.7K
R310
2.7K
R312
47K
C320
10/16
R313
12K
Q304
KTA1267
Q307
KRA103M
Q302
KTA1273
Q303
KRC103M
C354
0.022
FL301
OSC
R309
1.5K
R308
47
Q301
KTC3205
REC BIAS OSC
C303
330P
C305
2200P
C304
4.7/50
R304
47K
C355
0.01
C359
47/16
L310
100u
L309 100u
C358
3.3/50
C336
0.01
C337
0.1
C339
0.1
C343
0.01
L305
22u
R329
1.5K
C338
0.01
R338
270
C340
0.01
C341
0.01
C344
0.022
R332
4.7K
C345
4.7/50
C349
0.022
C348
0.1
C353
0.01
R336
1K
C372
18P
C378
1/50
C352
2.2/50
R334
1K
C351
4700P
R333
5.6K
C350
1/50
C347
4.7/50
L311
100u
C342
47/16
C346
5P
X301
3.579690MHz
C371
680P
L306
12u
R323
75
R326
75
R3F1
75
A MAIN (AUDIO/VIDEO SECTION)C.B
99 A.MUTE
DATA
CLOCK
51
D-V SYNC
50
C.SYNC
81
99
51
62
63
50
84
IC301
HA118217NF
AUDIO/VIDEO PROCESS
D1-D18
CONTROL
AUDIO(L)
OUT
IN
AUDIO(R)
OUT
IN
REC BIAS ADJ
VR301
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
5.0
1.6
(2.1)
1.6
2.3
(2.1)
(2.4)
1.8
2.1
2.8
2.8
2.1
2.2
2.8
2.1
1.4
2.1
0
0
0
0
2.7
5.1
5.1
2.7
5.1
5.1
1.7
5.1
2.5
0
0
0
0
1.9
-
-
-
2.8
1.9
2.1
2.8
-
2.8
2.8
2.8
5.0
-
-
-
2.3
(-)
5.0
5.0
0
2.5
2.5
2.1
2.2
2.1
-
(2.7)
2.1
-
-
2.8
2.1
(-)
-
2.8
1.9
2.8
-
-
(-)
-
(0)
2.8
0
0
-
1.1
-
-(0)
0
2.1(2.3)
2.1(2.3)
2.1(2.3)
2.1(2.3)
5.1
2.1(2.3)
2.1(2.3)
2.1(2.3)
2.1(2.3)
0(1.4)
2.1(2.3)
-
-
-
2.5
1
2
3
3
3
4
5
6
7
8
9
9
10
11
12
12
13
13
O N E V O L T A G E : P B O R R E C M O D E
T W O V O L T A G E S : P B A N D ( R E C ) M O D E
:REC AUDIO SIGNAL
:PB AUDIO SIGNAL
:REC VIDEO SIGNAL
:PB VIDEO SIGNAL
0
0
5.3
*
: WAVEFORMS No.
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