KV-AR29T80C - Sony TV Service Manual (repair manual). Page 14

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The following adjustments should be made when a complete

realignment is required or a new picture tube is installed.

•

These adjustments should be performed with rated power

supply voltage unless otherwise noted.

Controls and switches should be set as follows unless otherwise

noted:

PICTURE control ........................................................... normal

BRIGHTNESS control................................................... normal

Perform the adjustments in the following order :

1. Beam Landing

2. Convergence

3. Focus

Note : Test Equipment Required.

1. Color-bar/Pattern Generator

2. Degausser

3. Oscilloscope

...................................................................................................................................................................

•

In order to reduce the influence of geomagnetism on the set’s

picture tube, face it east or west.

•

Switch on the set’s power and degauss with the degausser.

1. Input a white signal with the pattern generator.

Contrast

Brightness

2. Position neck assy as shown in Fig4-1.

3. Set the pattern generator raster signal to a green raster.

4. Move the deflection yoke to the rear and adjust with the purity

control so that the green is at the center and the blue and the

red take up equally sized areas on each side.

(See Figures 4-1 through 4-3.)

5. Move the deflection yoke forward and adjust so that the

entire screen is green. (See Figure 4-2.)

6. Switch the raster signal to blue, then to green and verify the

condition.

7. When the position of the deflection yoke has been decided,

fasten the deflection yoke with the screws and DY spacers.

normal

}

* Put Neck Assy's

   end to rear side
   G3 end

Rear Side

Neck Assy

TOP VIEW

NECK ASSY

11mm

TAPE

Red

Blue

Green

Purity control
corrects this area.

Deflection yoke positioning
corrects these areas.