LG 42LV5500 Training Presentation page 50

P202 / P203 Power Supply Connector Voltage and Diode Check
P202 White Plug "SMPS Board" To "Panel LEDs"
Pin Label TP
1 LED+ C256+
2 n/c n/c
3 VC-3A EL70
4 4 VC-3B VC 3B EL71 EL71
5 VC-3C EL72
6 VC-3D EL73
7 VC-4A EL74
8 8 VC 4B VC-4B EL75 EL75
9 VC-4C EL76
10 VC-4D EL77
11 n/c n/c
12 LED+ C256+
*White to Black screen
P203
*The drive signal changes due to the brightness level of the
b backlights. Low indicates "Bright". High indicates "Dim".
Diode Mode values taken with all Connectors Removed
Run Diode Check
45V OL
n/c OL
*1.2V~10.4V OL
*1 2V~10 4V 1.2V~10.4V OL OL
*1.2V~10.4V OL
*1.2V~10.4V OL
*1.2V~10.4V OL
*1 2V 10 4V *1.2V~10.4V OL OL
*1.2V~10.4V OL
*1.2V~10.4V OL
n/c OL
45V OL
45V
1
kli ht L i di t
P203 Black Plug "SMPS Board" To "Panel LEDs"
Pin Label
1 LED+
2 n/c
3 VC-1A
4 4 VC 1B VC-1B
5 VC-1C
6 VC-1D
7 n/c
8 8 VC-2A VC 2A
9 VC-2B
10 VC-2C
11 VC-2D
12 12 n/c /
13 LED+
P202
"B i ht" Hi h i di t
50
TP Run
C256+ 45V
n/a n/c
EL62 *1.2V~10.4V
EL63 EL63 *1 2V~10 4V 1.2V 10.4V
EL64 *1.2V~10.4V
EL65 *1.2V~10.4V
n/a n/c
EL66 EL66 *1.2V~10.4V *1 2V 10 4V
EL67 *1.2V~10.4V
EL68 *1.2V~10.4V
EL69 *1.2V~10.4V
n/a / n/c /
C256+ 45V
*White to Black screen
1
"Di "
May 201 1 LCD TV 42LV5500
Diode Check
OL
OL
OL
OL OL
OL
OL
OL
OL OL
OL
OL
OL
OL OL
OL