Panasonic TC-21Z99R, Service Manual

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1. Apply a crosshatch pattern signal and Normalize Contrast
control to the maximum positions.
2. Adjust Brightness until the grey position of the crosshatch
pattern just becomes black.
3. Adjust the Red and Blue line at the centre of the screen by
rotating the R-B static.
Fig. 8
4. Adjust Red and Blue with Green line at centre of the screen
by rotating (RB)-G static convergence magnetic rings.
5. Lock convergence magnets with silicone sealer.
6. Remove the DY wedges and slightly tilt the Deflection Yoke
vertically and horizontally to obtain the good overall
convergence.
Fig. 9
7. Fix the Deflection Yoke by reinserting the DY wedges. Refer
to Fig. 10.
8. If purity error is found, repeat “Colour Purity” adjustment.
Convergence
2.11. White Balance Adjustment
Preparation:
1. Receive the white balance pattern and aging should have been performed over 30 minutes.
2. Set the picture menu to DYNAMIC NORMAL.
3. Degausse the CRT face.
4. Fix the CRT colour analyzer receiver unit to CRT face.
Adjustment of Low Light.
1. Adjustment Sub Bright, so that Y = 6.3 ± 1.0 nit.
2. Adjustment R-CUT OFF, so that X = 0.235 ± 0.010 nit.
3. Adjustment G-CUT OFF, so that Y = 0.235 ± 0.010 nit.
Adjustment of High Light
1. Adjustment Sub Bright, so that Y = 270 nit.
2. Adjustment R-Drive, so that X = 0.265 ± 0.010 nit.
3. Adjustment B-Drive, so that Y = 0.265 ± 0.010 nit.
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TC-21Z99R