DTR-7.2
SCHEMATIC DIAGRAM 8-2
Video section
U37
A
1
2
3
5
B
C
D
T O N A A R - 7 2 6 7 ( S C H - 9 - 1 )
P 2 5 0 5 B
C
Y
P 2 5 0 1
M O N I T O R
O U T
Y = 1 V P - P
C = 0 . 2 8 V P - P
P 2 5 0 6 A
Y
C
C
Y
P 2 5 0 3
Y
C
C
Y
P 2 5 0 4
Y
Y
Y
C
C
C
P 2 5 0 2
Q 2 0 0 7
R N 1 4 0 4
L 2 5 0 9 0 5 6 J
L 2 5 0 8 0 2 2 J
L 2 6 0 8
0 2 2 J
L 2 6 0 9
0 5 6 J
J
Q 2 5 2 2
R N 1 4 4 4
Q 2 6 2 2
R N 1 4 4 4
Q 2 4 1 4
Q 2 4 1 1
Q 2 4 1 2
Q 2 4 1 3
Q 2 4 1 0
Q 2 4 0 7
Q 2 4 0 8
Q 2 4 0 2
Q 2 4 0 3
Q 2 4 0 9
Q 2 4 0 4
Q 2 4 0 5
Q 2 4 0 6
Q 2 4 0 1
Q 2 5 0 2
T K 1 5 4 2 0 M
3
8
2
4
1
Q 2 6 0 2
T K 1 5 4 2 0 M
3
8
2
4
1
D2504
1SS352
D2503
1SS352
D2506
1SS352
D2505
1SS352
C 2 5 7 5
1 0 0 / 6 . 3
C 2 5 7 3
1 0 0 / 6 . 3
C 2 4 2 8
1 0 0 / 6 . 3
C2604
1
00/6.3
C 2 4 2 4
1 0 0 / 6 . 3
C 2 4 2 6
1 0 0 / 6 . 3
C 2 4 3 2
1 0 0 / 6 . 3
C 2 4 2 2
1 0 0 / 6 . 3
C2606
100/6.3
C2506
100/6.3
C2504
100/6.3
Q2504
2 S A 1 1 6 2 G R
Q 2 5 0 6
2 S A 1 1 6 2 G R
Q2503
2SC2712GR
Q 2 5 0 5
2 S C 2 7 1 2 G R
Q 2 5 0 2
T K 1 5 4 2 0 M
5
6
7
Q 2 6 0 2
T K 1 5 4 2 0 M
5
6
7
C 2 5 7 4
1 0 4 Z
C 2 4 2 7
1 0 4 Z
C 2 4 2 5
1 0 4 Z
C 2 4 2 3
1 0 4 Z
C 2 4 2 1
1 0 4 Z
C 2 4 3 1
1 0 4 Z
C2603
1
04Z
471J
C 2 5 0 8 1 0 2 J
C 2 5 0 9 2 2 1 J
C 2 6 0 8
1 0 2 J
C 2 6 0 9
2 2 1 J
C 2 4 3 3
1 0 4 Z
C 2 4 3 5
1 0 4 Z
C 2 4 3 4
1 0 4 Z
C 2 4 3 6
1 0 4 Z
C2505
104Z
C 2 6 1 2
1 0 4 Z
C 2 5 1 1
1 0 4 Z
C 2 6 0 2
1 0 4 Z
C 2 5 1 2
1 0 4 Z
C 2 5 0 2
1 0 4 Z
C 2 5 0 1
1 0 4 Z
C 2 6 0 1
1 0 4 Z
C 2 6 1 1
1 0 4 Z
C2605
104Z
C2503
104Z
R 2 6 2 6 2 7 0
R 2 6 2 5 1 0 0
R 2 6 2 2 1 0 0
R 2 6 2 4 2 7 0
R2623
10K
R 2 5 1 3
1 . 8 K
R2515
15K
R2514
1.8K
R 2 4 0 3 7 5
R 2 4 0 1 7 5
R2516
220
22
R2506
220
R2
509
1K
R 2 5 0 3
1 . 8 K
R2608
100K
R2609
100K
R2512
10K
R2511
100
R2523
10K
R2522
10K
R 2 0 4 7
1 0 K
R2402
10K
R2404
10K
R2427
75
R2428
75
R2425
75
R2426
75
R2423
75
R2424
75
R2410
10K
R 2 4 0 9
7 5
R 2 4 1 1
7 5
R2412
10K
R2421
75
R2422
75
R 2 4 0 5
7 5
R 2 4 0 7
7 5
R2406
10K
R2408
10K
R2432
75
R2431
75
R2604
1.8K
R2605
12K
R 2 6 1 1
1 0 0
R 2 6 1 3
1 . 8 K
R2612
10K
R2616
220
R2614
1.8K
R2615
15K
R2601
100
R2502
10K
R2501
100
R2510
4.7
R2508
1K
R2521
4.7
R2520
4.7
R2519
1K
R 2 5 1 8
1 K
R2606
220
R 2 6 0 3
1 . 8 K
R2602
10K
R2505
12K
R2504
1.8K
R2524
4.7
VEE
INH
X5
X7
X
X
6
X
4
CB
A
X
3
X
0
X
1
V
D
D
X2
VSS
Q2501
74HC4051
Y
-INP
1
2
3
4
5
6
7
8
9
1
01
11
21
31
41
5
16
VEE
INH
X5
X7
X
X
6
X
4
C
B
A
X
3X
0X
1
V
D
D
X2
VSS
Q2511
74HC4051
C
-INP
1
2
3
4
5
6
7
8
9
1
01
11
21
31
41
5
16
VEE
INH
X5
X7
X
X
6
X
4
CB
A
X
3
X
0
X
1
V
D
D
X2
VSS
Q2611
7
4HC4051
C
-REC
1
2
3
4
5
6
7
8
9
1
01
11
21
31
41
5
16
VEE
INH
X5
X7
X
X
6
X
4
C
B
A
X
3X
0X
1
V
D
D
X2
VSS
Q2601
7
4HC4051
Y-REC
1
2
3
4
5
6
7
8
9
1
01
11
21
31
41
5
16
R S 4
V 2 Y
V 2 C
R S 5
V 3 Y
V 1 Y
V 3 C
V 1 C
R S 6
D V D Y
D V D C
V 4 Y
V 4 C
R S 3
V 5 Y
D V D Y
V 5 C
D V D C
R S 7
V A R
V A R
V B R
V B R
R S 8
V C R
V C R
L S 1
V 1 Y
V 1 C
L S 2
V 2 Y
V 2 C
L S 1
V 3 Y
V 1 Y
V 3 C
V 1 C
L S 2
V 4 Y
V 4 C
L S 3
V 5 Y
D V D Y
V 5 C
D V D C
V 2 Y
V 2 C
V A I
V A I
L S 4
V B I
V B I
L S 3
V C I
V 3 Y
V C I
V 3 C
L S 4
R S 3
R S 3
R S 4
R S 4
V 4 Y
R S 5
R S 5
V 4 C
R S 6
R S 6
R S 7
R S 7
R S 8
R S 8
L S 1
L S 1
L S 2
L S 2
L S 3
L S 3
S W 4
L S 4
L S 4
S W 4
S W 4
V I D E O
V I D E O
G N D
G N D
C V O U T
C V O U T
G N D
G N D
C S I G N A L
C S I G N A L
G N D
G N D
S W 3
Y S I G N A L
Y S I G N A L
V 5 C
V 5 Y
VAI
VBI
VCI
VAR
VBR
VCR
-5V
GND
GND
+5V
GND
V-5
GND
GND
I N
V I D E O - 4
I N
V I D E O - 3
I N
V I D E O - 2
O U T
V I D E O - 2
I N
V I D E O - 1
O U T
V I D E O - 1
D V D I N
V5C
V5Y
V-5
< S D E T >
S D E T
S D E T * ( S I * O S D + < O S D > )
O S D * ( < S D E T > + < S I > )
P A L * ( S D E T * < S I > * O S D + < S D E T > )
R * < R = V 2 >
Z 2 * < I = V 2 >
R * < R = V 1 >
Z 2 * < I = V 1 >
< P A L > * ( S D E T * < S I > * O S D + < S D E T > )
< O S D >
O S D
S W 4
S W 3
S W 2
S W 1
Z O N E 2
P A L * ( S D E T * O S D + < S D E T > )
< P A L > * ( S D E T * O S D + < S D E T > )
S D E T * < O S D >
< S D E T > * < O S D >
R S 9
R S 8
R S 7
R S 6
R S 5
R S 4
R S 3
R S 2
R S 1
L S 4
L S 3
L S 2
L S 1
N A V D - 7 2 6 9
R N 1 4 4 4
Q 2 4 0 1 - Q 2 4 1 4
T O N A A F - 7 2 2 7 ( S C H - 1 . 2 )
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