GRADIENTE _ PLASMA TV _ PLT-4230_PLT-4270_ PL-4280 _ Use the trimpots VR1 (SETUP) and VR2 (SETDN) to correct the signal V-setup.

Use the trimpots VR1 (SETUP) and VR2 (SETDN) to correct the signal Vsetup.

     It is advised that all adjustments are performed with an oscilloscope, but if not possible, perform the following procedure:

• Leave the TV video signal sem (disconnect the antenna cables and video inputs) to the rest of the canvas Sejas driven.

• Using a screwdriver, adjust initially only trimpot VR1 (SETUP - fine tuning) until the screen image of rest be without bright spots or deleted.

• If this adjustment does not correct the abnormality also adjust the trimpot VR2 (SETDN).
• In this case you should switch between the trimpots VR1 and VR2 until the image is perfect and without granulations.
• Switch between screen saver and an image of a DVD disc (dark scenes) and reset the Vsetup if the image is still present imperfections.

If the setting (checked on the oscilloscope) is incorrect, change with a screwdriver to position the trimpots VR1 and VR2 until the signal Vsetup be corrected and the TV display a normal picture.

NORMAL PICTURE

FAULTY SCREEN SHOTS  DUE TO INCORRECT V-SETUP