LG 50PG20 Training Manual page 29

ADJUSTMENT NOTICE
ADJUSTMENT NOTICE
It is critical that the DC Voltage adjustments be checked when ever;
1) SMPS, Y-SUS or Z-SUS PWB is replaced.
2) Panel is replaced, since the SMPS does not come with new panel
3) A Picture issue is encountered
4) As a general rule of thumb when ever the back is removed
ADJUSTMENT ORDER "IMPORTANT"
DC VOLTAGE ADJUSTMENTS
1) SMPS PWB: Vs Va (Always do SMPS first)
2) Y-SUS PWB: Adjust -Vy, Vscan
3) Z-SUS PWB: Adjust Zbias
WAVEFORM ADJUSTMENTS
1) Y-SUS PWB: Ramp Up, Ramp Down
The Waveform adjustment is only necessary
1) When the Y-SUS PWB is replaced
2) When a "Mal-Discharge" problem is encountered
3) When an abnormal picture issues is encountered
Remember, the Voltage Label
it is specific to the panel's needs.
All label references are from a specific panel.
Set-
Up
They are not the same for every panel encountered.
Plasma Spring 2009
29
MUST be followed,
Ve
50PG20