Video Signals from the Main Board to the Control Board are
referred to as Low Voltage Differential Signals or LVDS. The
LVDS Cable P31 on Control board shown.
Flip up the locking mechanism to unlock.
Control Board LVDS P31 SignalsControl Board LVDS P31 Signals
video is delivered in dual 24 bit LVDS format. Their presence
can be confirmed with the Oscilloscope by monitoring the
LVDS signals with SMPTE Color Bar input. Loss of these
Signals would confirm the failure is on the Main Board or the
a
e
se
.
Example of LVDS Video Signal (613mV p/p)
LVDS
10Msec
2Msec
Example of Normal Signals measured at 100mV per/div
Pins 12~17, 22~25, 28~33, 38~41, 44~49, 60~65, 70~73 are video.
Pins 19~20, 35~36, 51~52, 67~68 are Clock signals for synchronizing.
1
May 2011 50PV450 Plasma
114
Pins are close together.
Pin 79 is active high when the set is placed into 3D mode.
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