34
2. PIN DESCRIPTION
PIN NO .
PIN N AM E
S TA ND AR D D C VO LT
PIN N O .
P IN N AM E
S TA ND AR D DC VO LT
1
A.R E C .O U T
2.3V
41
Y C C D D R IVE
2
A-G N D
0V
42
Y C C D D R IVE
3
A.A U TO BIA S IN
2.3V
43
N T S C H O U T
2F S C O U T
N T SC M O D E : 3.2V
E X .N T S C M O D E : O V
4
A.E Q -SW 2
2.3V
44
P B A PC 2
R E C : 0V P B : 1.7V
5
A.A U TO BIA S C
R E C : C O N TR O L VO LT
P B : 5V
45
P B C IN
1.75V
6
A.A U TO BIA S B
R E C : 0.7V, P B : 0V
46
P B C O U T
R E C : 3.9V, P B : 2.45V
7
A.E Q -IN
2.3V
47
C -V C C
5V
8
A.E Q -N F B
2.3V
48
C C C D D R IVE 2
R E C : 2.4V, P B : 2.4V
9
A.E Q -SW 1
2.3V
49
S LD FIL
R E C: 3.8V, P B : 3.8V
10
A.E Q -O U T
2.3V
50
C C C D D R IVE 1
R E C : 2.4V, P B : 2.4V
11
A.LIN E P B IN
51
A F C /AP C F IL.
R E C: 3.8V, P B : 3.8V
12
AG C -T C 1
carrier leak bal.
R E C : 2.3V
P B : 2.3V
52
C C C D IN
R E C : 3.25V
P B : 3.25V
13
AC C F ILTE R
R E C : 1.9V, P B : 1.9V
53
PA S TO P TR S W
0V
1 4
R E C -C -O U T
R E C : 2 .7 V, P B : 0 V
5 4
R E C AP C F IL.
R E C : 2 .1 V
15
PB Y F M /C IN
R E C : 0V, PB : 3.2V
55
V X 01/X01 IN
V X O : 3.9V, X 0 : 3.8V
16
EQ -F ILT ER
R E C : 2.6V, P B : 2.7V
56
V X 01/X01 O U T
V X O : 2.5V, X 0 : 2.3V
17
PB E Q O U T
R E C : 5V, PB : 2.4V
57
C G N D
0V
18
RE C Y FM O U T
R E C 2.2V
58
V X O 2/X 02 O U T 1
or P B H O U T
V X O :2.5V X0:2.3V
P B H O U T : 3 .4 V
19
R E C H O U T
R E C : 4V
R E C PAU S E : 2V
59
V X O 2/X 02 O U T 2
V X O : 2.7V 3.58N T:0V
X O : 2.4V 3.58N T:0V
20
PB Y F M IN
R E C ,PB : 3V
60
V X O 2/X O 2 IN
V X O :3.9V 3.58N T:O V
X O : 3.8V 3.58N T:0V
21
TR IC K H O U T
T R IC K M O DE 4.2V
61
K ILL-FILTE R
C O LO U R :1.9V K IL:3.1V
22
AG C -T C 2
R E C : 1.6V PB : 1.5V
62
A C K /SLD O U T
23
PB E -P EA K IN G
R E C : 0V P B : 1.4V
63
S E R IAL C LK IN
24
M A IN EM P H F.
R E C : 2.1V PB : 1.8V
64
S . D ATA IN
25
RE C -Y
R E C : 2.2V
65
S E C AM D E T/
S -D E T O U T
M A IN EM P O U T
P B : 2.2V
26
CLA M P IN
R E C :2.8V P B : 2.8V
66
C -R O T P U L-IN
27
Y-G N D
0V
67
H /S W P U L-IN
28
VID E O IN 1
S Y N C T IP :1.5V P B :0V
68
S E C AM D E T
LP F
P IN 65'H '=4V
P IN 65 'L '= 2V
29
FB C LAM P F IL.
R E C : 2.75V PB : 2.7V
69
S E C AM D E T A D J
2.5V
30
VID E O IN 2
S Y N C T IP :1.5V P B :0V
31
RE G
R E C : 4V P B : 4V
70
A .M U TE O N /O F F
0V
32
VID E O IN 3
S Y N C T IP :1.5V P B :0V
71
A .LIN E IN 1
2.3V
33
Q V,Q H -IN S ER T
C H A R .-IN S E R T
T H R O U G H : 0-0.8V
C H A R A C T ER : 1-2.2V
Q H IN : 2.5-3.2V
Q V IN : 3.8-VC C
72
A .A LC D E T
0V
73
A .LIN E IN 2
2.3V
34
VP S O U T
S Y N C T IP :1.5V P B :0V
74
A .V R EF F IL.
2.3V
35
VID E O A G C IN
R E C : 3.1V, P B : 4.2V
75
A .LIN E IN 3
2.3V
36
Y-V C C
5V
76
A -V C C
5V
37
SY N C -O U T
77
A .LIN E O U T
2.3V
38
VID E O O U T
78
A .A LC D E T IN
2.3V
39
VC A F ILT ER
R E C : 2.9V, P B : 2.9V
79
A . R E C IN
2.3V
40
VC A IN (C LA M P )
R E C : 2.8V, P B : 2.8V
80
A .H S W O U T
R E C :5V, P B : 0V
Summary of Contents for MV1421
Page 1: ...SERVICE MANUAL MV1421 1422 4822 34cm 48cm Televideo Effective December 1999 MV4822SERV ...
Page 6: ...4 3 BLOCK DIAGRAM 3 1 Audio Signal Flow ...
Page 7: ...5 3 2 Video Signal Flow ...
Page 8: ...6 3 3 TV and monitor power switching ...
Page 22: ...20 3 Block Diagram ...
Page 53: ......
Page 54: ......
Page 55: ......
Page 117: ...2 Main PCB Assy Circuit Diagram SECTION BEFORE AFTER MAIN TUNER ...
Page 118: ...3 SECTION BEFORE AFTER SUB TUNER ...
Page 125: ...10 Exploded View MV1421 model ...
Page 126: ...11 Exploded View MV1422 model ...
Page 127: ...12 Exploded View MV4822 model ...
Page 128: ...13 Exploded View DVT 20F9 model ...
Page 129: ...14 Exploded View DVT 21F1 model ...
Page 130: ...15 Exploded View DVT 21F2 model ...