LG 50PS80 Series, Руководство по обучению

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August 2009 Plasma 50PS80
Y Y - - SUS (Y Drive Waveform Set SUS (Y Drive Waveform Set - - Up and Set Up and Set - - Down Adjustments) Down Adjustments)
PROCEDURE: (See figure to the right for locations)
Oscilloscope TP on the “Waveform” TPs on the Y-Drive PWB.
3) SET-UP ADJUSTMENT VR602:
Adjust VR602 while observing area ( A ) and set the flat portion to
10uSec ± 5uSec. While observing only the peak of the waveform,
turning the pot CW which cause the peak to dome to the left of the
flat portion. CCW will cause the peak to decrease in amplitude.
Turn CW until the dome appears, then back off CCW.
4) SET-DOWN ADJUSTMENT VR601:
Adjust VR601 while observing
area (
B ) and set to
160uSec ± 5uSec.
1) Pre-Heat unit for at least 10 Minutes before making adjustments.
Vs, Va, -Vy and VSC adjustments should be completed.
2) Place unit into White Wash from the Customer’s Menu for all adjustments.
Lower Center Of PWB
V Set-Up Adj
VR602
V Set-Dn Adj
VR601