LG 42LH20 Series, Service Manual

Page: 46 / 74

February 2009 42LH20
46
T T - - CON PWB Connector CN5 to Main PWB Voltage and Diode Check CON PWB Connector CN5 to Main PWB Voltage and Diode Check
Diode Mode values taken with all Connectors Removed
CN5 CONNECTOR "T-CON PWB“ to P801 "Main"
*Pin 29 PWM-DIM 3.15V (Max 100%) to 0.6V (Min 0%)
Customer’s Menu Backlight setting. But is Not Used by
T-CON.
1.1V 1.2V 0V
TXA1- 16
Gnd Gnd Gnd
Gnd 15
0.8V 1.1V 0V
TXA0+ 14
1.1V 1.2V 0V
TXA0- 13
Gnd Gnd Gnd
Gnd 12
1.1V 0V 0V
OPC-EN 11
Open 0V 0V
LVDS-SEL 10
Gnd Gnd Gnd
Gnd 9
Gnd Gnd Gnd
Gnd 8
Gnd Gnd Gnd
Gnd 7
Gnd Gnd Gnd
Gnd 6
1.6V 12.1V 0V
LVDS 12V 5
1.6V 12.1V 0V
LVDS 12V 4
1.6V 12.1V 0V
LVDS 12V 3
1.6V 12.1V 0V
LVDS 12V 2
Gnd Gnd Gnd
Gnd 1
Gnd Gnd Gnd
Gnd 32
Gnd Gnd Gnd
Gnd 31
Gnd Gnd Gnd
Gnd 30
1.1V 3.1V 0V
*PWM-DIM 29
Open 3.3V 0V
OPC-OUT 28
Gnd Gnd Gnd
Gnd 27
1.1V 1.2V 0V
TXA3+ 26
1.1V 1.2V 0V
TXA3- 25
Gnd Gnd Gnd
Gnd 24
1.1V 1.2V 0V
TXAC+ 23
1.1V 1.1V 0V
TXAC- 22
Gnd Gnd Gnd
Gnd 21
1.1V 1.1V 0V
TXA2+ 20
1.1V 1.2V 0V
TXA2- 19
Gnd Gnd Gnd
Gnd 18
1.1V 1.1V
Gnd TXA1+ 17
NOTE: The outside pins on each side are actually not
counted, they are both ground. But they are counted in
the table. (See arrow on the T-CON PWB CN5)