Samsung CS21A9W2QS/MUR, Service Manual

Page: 9 / 40

Alignment and Adjustments
4-6 Samsung Electronics
4-6 MICOM
4-6-1 UOC IC 1-CHIP Part Pin Port Function
Pin No
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Pin No
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
FUNCTION
Analog GND of TV
Secam PLL decoupling
2nd supply voltage(8V)
Supply voltage of digital circuit
Phase-2 filter
Phase-1 filter
GND 3 for TV
Bandgap decoupling
Automatic Volume Leveling(90’ ver)
Vertical drive B out
Vertical drive A out
IF input 1
IF input 2
Reference current input
Vertical sawtooth cap
Tuner AGC out
Audio deemphasis
Decoupling sound demodulator
GND 2 for TV
Narrow band PLL filter
Sound IF input/ AM output
FUNCTION
B out
G out
R out
Black current in/V-guard in
Beam current limiter in
B-in/Pb-in
G-in/Y-in
R-in/Pr-in
F/B in
Audio output(volume controlled)
GND
EXT CVBS in
GND for TV
Internal CVBS input
Main supply voltage TV(8V)
IF Video out
IF-PLL loop filter
EHT/over voltage protection in
External audio out/AM output
Flyback in/sandcastle out
Horizontal out
MICOM
PART
1-CHIP
UOC-IC
PART
1
.
.
.
11
64
.
.
.
54
12
.
.
.
.
.
.
.
.
32
53
.
.
.
.
.
.
.
.
33