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Panasonic TX-28F250A-AUSTRALIA Service Manual page 12

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4. Adjust Red and Blue with Green line at center of the screen by
rotating (RB)-G static convergence magnet.
5. Lock convergence magnets with silicone sealer.
6. Remove the DY wedges and slightly tilt the Deflection Yoke
vertically.
7. Fix the Deflection Yoke by re-inserting the DY wedges.
8. If purity error is found, repeat "Colour Purity" adjustment.
4.4. White Balance (Market Mode CHK 4)
Preparation
1. Receive a colour bar signal with colour "OFF", and operate the TV
set for more than 30 minutes.
2. Set the picture menu to "DYNAMIC NORMAL" and the AI to off.
3. Connect an oscilloscope to TPL5 with DC mode.
4. Set the TV set to Market Mode : white balance adjustment (CHK 4).
5. Screen VR : Min.
6. Set the data level of RGB CUT OFF / DRIVE and SUB BRIGHT.
Display : Data Level
R-CUT OFF : 63
G-CUT OFF : 128
B-CUT OFF : 63
R-DRIVE : 128
B-DRIVE : 128
SUB BRIGHT : 63
Adjustment
1. Select G-CUTOFF adjustment mode and collapse vertical scan.
12

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