LG 50PG20 Training Manual page 99

Advanced single scan troubleshooting
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Control PWB Plug P121
Control PWB Plug P121
P121 CONNECTOR Odd Pins "Control PWB" to P302 "Main PWB"
Pin
STBY
1
Gnd
3
0V
5
0V
7
0V
9
0V
11
0V
13
Gnd
15
0V
17
0V
19
Gnd
21
0V
23
0V
25
0V
27
0V
29
0.89V
31
Gnd
Diode Mode readings taken with all connectors removed.
"
LVDS Plug
"
"
LVDS Plug
"
Run
Diode Mode
Gnd
Gnd
0V
1.10V
1.19V
1.10V
1.26V
1.10V
0V
1.10V
1.15V
1.10V
Gnd
Gnd
0V
1.10V
0V
1.10V
Gnd
Gnd
0V
1.10V
5.29V
1.10V
1.2V
1.10V
3.29V
1.37V
3.29V
OL
Gnd
Gnd
Voltage and Resistance Readings
Voltage and Resistance Readings
P121 CONNECTOR Even Pins "Control PWB" to P302 "Main PWB"
Pin
STBY
2
0V
4
0V
6
Gnd
8
0V
10
0V
12
0V
14
Gnd
16
0V
18
0V
20
0V
22
0.89V
24
0V
26
Gnd
28
0.89V
30
0V
Plasma Spring 2009
99
Run
Diode Mode
0V
1.10V
1.26V
1.10V
Gnd
Gnd
1.19V
1.10V
0V
1.10V
1.26V
1.10V
Gnd
Gnd
0V
1.10V
0V
1.10V
0.21V
1.10V
0.56V
1.10V
1.26V
1.10V
Gnd
Gnd
3.29V
OL
0V
OL
50PG20

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