Specifications

Preliminary Information 42PQ30

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

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

Remember, the Voltage Label MUST be followed,

it is specific to the panel’s needs.

All label references are from a specific panel.

They are not the same for every panel encountered.

-VY

Z_BIAS

Panel

“Rear View”

Manufacturer

Bar Code

Set-

Vscan

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