![background image](http://html.mh-extra.com/html/haier/htx21s31/htx21s31_service-manual_138159024.webp)
23
2
).
N101 LA76812
Pin
No.
function
voltage V
Pin
No.
function
voltage
V
1
Audio output
2.23
28
FBT input
1.06
2
FM output
2.23
29
VCO IREF
1.69
3
IF AGC filter
2.22
30
Clock output
0.002
4 RF
AGC 2.59
31 VCC 0.002
5
PIF AMP input
1.30
32
OSD gain control
3.05
6
PIF AMP input
2.83
33
Gnd
0
7
IF ground
2.83
34
X-ray pretect
0.06
8
IF VVcc
0
35
ACC killer filter
0.39
9
FM filter
4.94
36
APC2 filter
3.49
10 AFT
output 1.90
37
FSCout 0.54
11 Bus
data 2.77
38 XTAL 2.87
12 Bus
clock 4.85
39 APC1
filter 3.2
13
ABL
4.76
40
Selected video output
2.43
14
R-input
3.92
41
Video chroma deflection
0
15
G-input
0.14
42
Ext video input
2.55
16 B-input 0.15
43 Power 5
17
Fast blanking input
0.08
44
Int . video input
2.77
18
RGB Vcc
7.94
45
Black stretch filter
2.6
19 R-output 2.21
46 Video
input 2.12
20 G-output 2.36
47 APC
filter 3.5
21 B-output 2.28
48 VCO
coil 4.3
22
H-synchronize output
0
49
VCO coil
4.3
23
Vertical output
2.47
50
FLL filter
2.24
24
Vertical ramp ALC filter
2.65
51
Ext audio input
2.12
25 Power 5.10
52
SIF
output
1.95
26
AFC filter
2.49
53
APC filter
2.38
27
Horizontal output
0.63
54
SIF input
3.14
Circuit Explanation
Summary of Contents for HTX21S31
Page 12: ...11 6 Net dimension Haier Net dimension ...
Page 19: ...18 11 Circuit Diagram Circuit Diagram ...
Page 22: ...21 PCB ...