Daewoo PF2720 Service Manual page 25

Chassis no. ch-16cd
Table of Contents

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30
Decoupling sound demodulator or SIF input 2
31
Ground 2 for TV processor
32
Narrow band PLL filter or AGC sound IF
Automatic Volume Levelling / sound IF input /
33
subcarrier reference output / audio
34
Deemphasis
35
Horizontal output
36
Flyback input/sandcastle output
37
External audio output / QSS intercarrier out
38
EHT/overvoltage protection input
39
IF-PLL loop filter
40
IF video output / selected CVBS output
41
Supply voltage TV processor
42
CVBS/Y input
43
C input
Audio output/AM audio output
44
(volume controlled)
45
2nd RGB / YUV insertion input
46
2nd R input / V (R-Y) input / PR input
47
2nd G input / Y input
48
2nd B input / U (B-Y) input / PB input
49
Beam current limiter input
50
Black current input / V-guard input
51
Red output
52
Green output
53
Blue output
Analog supply of Teletext decoder and digital
54
supply of TV-processor (3.3 V)
55
OTP programming voltage
56
Digital supply to core (3.3 V)
57
Oscillator ground supply
58
Crystal oscillator input
59
Crystal oscillator output
60
Reset
61
Digital supply to periphery (+3.3 V)
62
Port 1.0 or external interrupt 1 input
63
Port 1.1 or Counter/Timer 0 input
64
Port 1.2 or external interrupt 0 input
SERVICE MANUAL
0
2.32
0
3.1
0.75
2.60
1.47
2.43
2.75
8.1
4
0
3.9
1.55
4.44
1.67
2.5
2.5
2.5
1.87
5.8
2.63
2.47
2.69
3.27
0
3.28
0
1.58
1.67
0
3.28
0
0
4.59
23
0
11.2
10.9
9.8
9.75
1.2
1.35
0
3.1
3.0
3.1
3.0
3.1
3.0
0.67
0.65
0
0.67
0.65
0
0
0.67
0.65
12.9
11.9
7.3
7.1
18.7
18.8
0
0
0
0
0

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