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7. Fix the Deflection Yoke by re-inserting the DY wedges.
8. If purity error is found, repeat "Colour Purity" adjustment.
5.10. WHITE BALANCE (MARKET MODE CHK 3)
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 TPL7 with DC mode.
4. Set the TV set to Market Mode : white balance adjustment (CHK 3).
5. Screen VR : Min.
6. Set the data level of RGB CUT OFF / DRIVE and SUB BRIGHT.
Display
R-CUT OFF
G-CUT OFF
B-CUT OFF
R-DRIVE
B-DRIVE
SUB BRIGHT
Adjustment
1. Select G-CUTOFF adjustment mode and collapse vertical scan.
2. Adjust G-CUTOFF control to become the DC=0 V to video level at
180 V as shown in Fig. 1.
Data Level
63
128
63
128
128
63
Fig. 1
13
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