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SONY KVT21MN8
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SONY KVT21MN8 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 13 (click to view)
KV-T21MN8/T21MN81

SECTION 3 SET-UP ADJUSTMENTS
⢠⢠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. Perform the adjustments in the following order : 1. Beam Landing 2. Convergence 3. Focus 4. White Balance Note : Test Equipment Required. 1. Color-bar/Pattern Generator 2. Degausser 3. Oscilloscope
.................................................................................................................................................................................................................................

RM-870

Controls and switch 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 power and degauss with the degausser.

Purity control

3-1. BEAM LANDING
1. Input a white signal with the pattern generator. Contrast Brightness

}

normal

Fig. 3-2

2. Position neck assy as shown in Figure 3-1. 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 3-1 through 3-3.) 5. Move the deflection yoke forward and adjust so that the entire screen is green. (See Figure 3-1.) 6. Switch the raster signal to blue, then to red and verify the condition. 7. When the position of the deflection yoke has been decided, fasten the deflection yoke with the screw. 8. If the beam does not land correctly in all the corners, use a magnet to adjust it. (See Figure 3-4.)
BLUE RED

GREEN

Fig. 3-3
Purity control corrects this area. b a Disk magnets or rotatable disk magnets correct these areas (a-d).

Neck assy

c

d

Deflection yoke positioning corrects these areas. b

c

G1 G2 G3
a

Fig. 3-1

d

Fig. 3-4

â 13 â

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