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Insignia
LCD TV
NS-LCD32
Insignia NS-LCD32
40 pages
Manual
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18
5.
M52797SP
A
V switch with I2C bus control
Pin description:
1
V
C
C
9
V
1
7
V
I
D
E
O
O
U
T
2,
4 A
V2
L
R
IN
19,
21 L
R
OUT
2
A
V
2
V
I
D
E
O
I
N
2
0
A
V
C
V
B
S
O
U
T
6
TV
-CVBS
IN
23 TUNER_IN
5,
7 Y
Pr
Pb1
L
R
IN
22,
24 TV
L
R
IN
8,
10 Y
Pr
Pb2
L
R
IN 1
1,
12 SCL,
SDA
19
21
Table of Contents
Main Page
Table of Contents
2
Points for Attention in Servicing of LCD
3
Safety Precautions
3
Points for Attention During Installation
4
Test Equipment
5
The Alignment Flow Chart
5
Unit Adjustment
5
Alignment Instructions
5
Auto Color Adjustment
6
Performance Check
6
VGA Terminal
6
HDMI Terminal
6
Trouble Shooting
7
Ex-Factory Setting of User Menu
7
YPBPR and TV Brightness Check
7
Method of Software Upgrading
10
NTSC Signal Flow
12
ATSC Signal Flow
12
Pc/Yprpb Signal Flow/Hdmi Signal Flow
12
Working Principle Analysis of the Unit
12
Block Diagram
13
IC Block Diagram
14
Pin Configuration of MST9883
17
System Configuration
18
Rs15102
19
M52797SP AV Switch with I2C Bus Control
20
Wiring Diagram
21
Identification Criteria for the Bright Spot and Dark Spot of the LCD Screen
22
Abnormal Picture
23
Troubleshooting Guide
23
No Picture, no Sound
24
With Picture but no Sound
24
With Sound but no Picture
25
S-Video or AV no Picture
25
NTSC Channel no Picture
26
ATSC Channel no Picture
26
No DC Voltage Output
27
No Power Supply
27
Troubleshooting Guide of Power Supply Board
27
Flash and DEMODU Diagram
28
Schematic Diagram
28
DDRRAM Diagram
29
Analog Switch Diagram
30
Video Switch Diagram
31
D-V&LVDS Diagram
32
Power Diagram
33
760P&G Diagram
34
Amp Diagram
35
HDMI Diagram
36
Main Assembly
39
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