Front Led Board Plug J1 To Main Voltage And Diode Checks - LG 42PQ30 Training Manual

Front LED Board Plug J1 to Main Voltage and Diode Checks

Front LED Board Plug J1 to Main Voltage and Diode Checks
Voltage and Diode Mode Measurements for the Main Board
J1 Connector "MAIN Board" to "Front Keys"
Pin
1
2
3
4
*5
6
7
8
9
Stand By 5V
10
11
12
13
14
15
Diode Mode Readings taken with all Connectors Disconnected. DVM in Diode Mode.
Label STBY
IR 5V
Gnd Gnd
Key1 3.29V
Key2 3.29V
P Key 0V *(5V)
Gnd Gnd
EYE-SCL 0V
EYE-SDA 0V
Gnd Gnd
5VST 5V
3.3VST 0V
Gnd Gnd
LED-R 3.3V
LED-W 0V
PWM Gnd
Run Diode Mode
5V 3.2V
Gnd Gnd
3.29V 1.6V
3.29V 1.6V
0V Open
Gnd Gnd
3.28V 2.5V
3.28V 2.5V
Gnd Gnd
5V 1.06V
5.13V 1.1V
Gnd Gnd
0V 3.22V
03.25 Open
Gnd 1V
113 Preliminary Information 42PQ30
J1 Pin
* Pin 5 (Power Key)
This pin is 0V when the
Main Power button is
locked "On" (In) and 5V
when it is locked "Off"
(Out)
* Pin 5 (Power Key)
When this switch is
out, Stand-By 5V turns
off.