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Item/Preparation
1. Apply 3.58MHz NTSC Rainbow pattern.
2. Connect an oscilloscope to TPA36 or TPL1 (R OUT).
3. Connect a short jumper to FBT pin 3 or TPA34 and TPA5.
4. Set control :
Picture menu.......................DYNAMIC CONTROL
Channel Colour Set...........STD
Before Colour Purity, Convergence and White Balance adjustments are attempted, V. Center, V. Height,
Width, H. Center and Focus adjustments must be completed.
5.8. COLOUR PURITY
1. Set Bright and Contrast controls to their maximum positions.
2. Operate the TV set over 60 minutes.
3. Full degauss the picture tube by using an external degaussing
coil. By rotating R-B static convergence magnet.
4. Apply a crosshatch pattern signal and adjust roughly the static
convergence magnets.
5. Apply a green pattern signal.
6. Loosen a clamp screw for the Deflection Yoke and move the
Deflection Yoke as close to the purity magnet as possible.
7. Adjust the purity magnet so that a vertical green field is obtained
at the center of the screen.
8. Slowly press the Deflection Yoke and set it where a uniform green
field is obtained.
9. Adjust roughly the Low Light controls and make sure that a
uniform white field is obtained.
1. Adjust Bright Control.
a = 2.3 ± 0.2Vp-p
2. Connect the waveform.
b = 1.3 ± 0.5Vp-p
11
Adjustment Procedure
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