LG 42PQ30 Training Manual page 30

ADJUSTMENT NOTICE
ADJUSTMENT NOTICE
It is critical that the DC Voltage adjustments be checked when;
1) SMPS, Y-SUS or Z-SUS PWB is replaced.
2) Panel is replaced, Check Va/Vs 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: Va Vs (Always do SMPS first)
2) Y-SUS PWB: Adjust –Vy, Vscan,
3) Z-SUS PWB: Adjust ZBias
WAVEFORM ADJUSTMENTS
1) Y-SUS PWB: Set-Up, Set-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 MUST be followed,
it is specific to the panel's needs.
-VY Vscan Z_BIAS
Set-
Ve
Up
All label references are from a specific panel.
They are not the same for every panel encountered.
Preliminary Information 42PQ30
30
Manufacturer
Bar Code
Panel
"Rear View"