LG 42LH20 Series, Service Manual

Page: 59 / 74

LCD or PLASMA 2009 Model
59
0V
0V
0V
0V
Gnd
Gnd
Gnd
Gnd
0V
0V
Gnd
0V
0V
Gnd
0V
SBY
1.6V 12.1V LVDS 12V 30
1.6V 12.1V LVDS 12V 29
1.6V 12.1V LVDS 12V 28
1.6V 12.1V LVDS 12V 27
Gnd Gnd Gnd 26
Gnd Gnd Gnd 25
Gnd Gnd Gnd 24
Gnd Gnd Gnd 23
Open 0V LVDS-SEL 22
1.1V 0V OPC-EN 21
Gnd Gnd Gnd 20
1.1V 1.2V TXA0- 19
0.8V 1.1V TXA0+ 18
Gnd Gnd Gnd 17
1.1V 1.2V TXA1- 16
Diode
Check
Run LABEL Pin
Main PWB Connector P801 to T Main PWB Connector P801 to T - - CON Voltage and Diode Check CON Voltage and Diode Check
Diode Mode values taken with
all Connectors Removed
Gnd
Gnd
0V
0V
Gnd
0V
0V
Gnd
0V
0V
Gnd
0V
0V
Gnd
Gnd
SBY
1.1V 1.1V TXA1+ 15
Gnd Gnd Gnd 14
1.1V 1.2V TXA2- 13
1.1V 1.1V TXA2+ 12
Gnd Gnd Gnd 11
1.1V 1.1V TXAC- 10
1.1V 1.2V TXAC+ 9
Gnd Gnd Gnd 8
1.1V 1.2V TXA3- 7
1.1V 1.2V TXA3+ 6
Gnd Gnd Gnd 5
Open 3.3V OPC-OUT 4
1.1V 3.1V *PWM-DIM 3
Gnd Gnd Gnd 2
Gnd Gnd Gnd 1
Diode Check Run LABEL Pin
P801 CONNECTOR "Main" to CN5 "T-CON PWB"
*Pin 3 PWM-DIM 3.15V (Max 100%) to 0.6V (Min 0%)
Customer’s Menu Backlight setting. But is Not Used on T-CON.