Set-Up Adjustments; Beam Landing - Sony Trinitron KV-AR29T80C Service Manual

KV-AR29T80C/AR29X80C
RM-W104
• 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.

4-1. BEAM LANDING

1. Input a white signal with the pattern generator.
Contrast
}
normal
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 pu-
rity 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.
Neck assy
Behind the G2 edge
G1 G2
Fig. 4-1
RM-W104
SECTION 4

SET-UP ADJUSTMENTS

G3
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
Deflection yoke positioning
corrects these areas.
– 14 –
Fig. 4-2
Blue
Red
Green
Fig. 4-3
Purity control
corrects this area.
Fig. 4-4