LCD DV
32LH30
66
Spring 2009
MAIN PWB
Main PWB LVDS P800 Video Output Check
Main PWB LVDS P800 Video Output Check
P800
Location
To confirm that the Main PWB is outputting Picture Content signals, check P800 (LVDS) cable for
output. Check pins 11-14,16-17, 19-24, 27-30, 32-33 and 35-40. Pins 35-36 carry the clock for TA
and 19-20 carry the clock for TB. These signals vary from each other, but looking for signals like
the ones shown below on any of these pins will confirm the output of video content. This signal is
using standard SMTE Color Bar output from a generator as the input source.
Pin 1
Pin 39
This is just a sample of two pins on the LVDS.
There are 8 pins on P801 carrying video.
2uS
500nS
2uS
500nS
Pin 51
Pin 1, 2, 3, 4 (LVDS 12V)
P800
Pin 11
