Set-Up Adjustments; Beam Landing - Sony TRINITRON KV-XF29M50 Service Manual

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Service manual (110 pages)

Table Of Contents

Table of Contents

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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

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

Preparation :

•

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.

3-1. BEAM LANDING

1. Input a white signal with the pattern generator.

Contrast

}

normal

Brightness

2. Position neck assy as shown in Fig3-2.

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

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

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

take up equally sized areas on each side.

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

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

screen is red. (See Figure 3-1.)

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.

8. If the beam does not land correctly in all the corners, use a

magnet to adjust it.

(See Figure 3-4.)

Fig. 3-1

SECTION 3