LG 42PG20 Training Manual page 60

CIRCUIT DeSCRIPTIONS
4
Pin Label STBY
1 15V
3 Gnd
2
5 NC
7 Gnd
9 5V
P
11 5V
13 Gnd
15 Gnd
G
17 5_V Det .15V
19 RL_On
2
21 M5V_ 3.27V 3.24V
0
Resistance Readings with the board Disconnected. DVM in the Diode mode.
60
PDP Training - Fall 2008
P701 "Main" to P813 "SMPS"
Run Diode Check
0V 16.5V 3.8V
Gnd Gnd Gnd
NC NC Open
Gnd Gnd Gnd
5V 5V 0.75V
5V 5V 0.75V
Gnd Gnd Gnd
Gnd Gnd Gnd
5V 3.25V
0V 3.73V Open
1.22V
CN701 "Main" to "Speakers"
Pin Stby
1 0V
2 0V
3 0V
4 0V
P303 "MAIN" to "Front Keys"
Pin STBY
1 5V
2 Gnd
3 0V
4 Gnd
5 0V
6 Gnd
7 5V
8 Gnd
9 0V
10 Gnd
11 0V
12 Gnd
Pin Label
2 15V
4 Gnd
6 NC
8 Gnd
10 5V
12 5V
14 Gnd
16 Gnd
18 AC Det
20 Vs_On
22 AUTO
Run Diode Check
8V 2.58V
8V 2.58V
8V 2.58V
8V 2.58V
Run Diode Check
5V 2.99V
Gnd
3.29V 1.18V
Gnd
3.29V 1.18V
Gnd
5V 0.75V
Gnd
0V 1.12V
Gnd
3.84V 1.03V
Gnd
STBY Run Diode Check
0V 16.5V 2.82V
Gnd Gnd
NC NC Open
Gnd Gnd
5V 5V 0.75V
5V 5V 0.75V
Gnd Gnd
Gnd Gnd
5V 5V Open
0V 3.2V 1.22V
Gnd Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd