LG 42PQ30 Training Manual page 83

Control LVDS Signals
Control LVDS Signals
Pins are close together,
Use Main PWB side.
P1002 on Main Board
Connector P1002 Configuration
- indicates signal pins.
2 1
4 3
6 5
7
8
10 9
12 11
13
14
16 15
18 17
19
20
21
22
24 23
26 25
LVDS
Video Signals from the Main Board to the Control Board are referred to as Low
Voltage Differential Signals or LVDS. Their presence can be confirmed with the
Oscilloscope by monitoring the LVDS signals with no input signal selected while
pressing the Menu Button "on" and "off" with the Remote Control or Keypad.
Loss of these Signals would confirm the failure is on the Main Board!
Pin
Main PWB P1002
Example of Normal Signals measured at 200mv/cm at 5µs/cm.
Menu Off
Preliminary Information 42PQ30
83
LVDS Cable
P121 on Control PWB shown.
Press two outside tabs inward
to release.
Menu ON