DOWNLOAD Sony KV-HA21M80 (serv.man3) Service Manual ↓ Size: 2.75 MB | Pages: 47 in PDF or view online for FREE

– 10 –

Press SPACE SOUND.

“ON”

listen to monaural sound with a stereo-like effect.

“OFF”

turn off space sound mode.

Note
• You can also turn space sound on or off using the SELECT and + or – buttons.

– 11 –

 Do not take out CRT support block while TV set in

standing position.

 Undress necessary wires that creates tension while

placing the chassis into Service Position.

1 Eight screws
     (+BVTP 4 

× 16)

1 Two screws
     (+BVTP 4 

× 16)

2 Rear cover

1

 Two screws washer head

2

 Speaker 

     Bracket

3

 Speaker

(+P 4 

× 16)

A board

Terminal board bracket

One screw
(+BVTP 4 

× 16)

For replacements of light guide,unscrew them,
exchange with new parts and fix them with
screws respectively.

One screw
(+BVTP 3 

× 12)

1 Push the claw to direction 
     of arrow and remove

2 Spring compression

3 Power Button

–

 12 

–

•REMOVAL OF ANODE-CAP

NOTE : After removing the anode, short circuit the anode of the picture tube and

the anode cap to the metal chassis, CRT shield or carbon paint on the
CRT.

•REMOVING PROCEDURES

1 Turn up one side of the rubber cap in the direction indicated by the arrow a.

2 Using a thumb pull up the rubber cap firmly in the direction indicated by the arrow b.

3 When one side of the rubber cap is separated from the anode button,  the anode-cap

can be removed by turning up the rubber cap and pulling it up in the direction of the
arrow c.

• HOW TO HANDLE AN ANODE-CAP

1 Do not damage the surface of anode-caps with sharp shaped objects.
2 Do not press the rubber too hard so as not to damage the inside of anode-cap.

3 Do not turn the foot of rubber over too hard.

a

a

b

b

c

 Anode Button

Demagnetic coil

!º

Two screws 
(washer head)
(+P 4 

× 16)

2

Two screws
(Tapping 7+
Crown Washer)

!¡

Speaker
(15 

× 6.5cm)

!¤

Speaker
(15 

× 6.5cm)

4 Tension

spring

!£

Chassis assy

5 Deflection

yoke

6

CV board

3

Anode cap

Coating earth assy

7

Picture tube

8 Cushion

1 Two screws

(Tapping 7+
Crown Washer)

9 Two screws 

(washer head)
(+P 4 

× 16)

Holder DGC

Screw Location

Beznet Hook

PWB Bracket

CRT Support Block

CRT Support Block

•

Please make sure the TV set is not in standing position before removing necessary
CRT support located on bottom right and left.

– 13 –

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

4. White Balance

Note :  Test Equipment Required.

1. Pattern Generator

2. Degausser

3. Oscilloscope

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

normal

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. Set the pattern generator raster signal to a green raster.
3. 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 3-4.)

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

entire screen is green. (See Figure 3-1.)

5. Switch the raster signal to blue, then to red and verify the

condition.

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

fasten the deflection yoke with the screws and DY spacers.

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

magnet to adjust it.
(See Figure 3-4.)

}

Purity control

Red

Blue

Green

Deflection yoke positioning

corrects these areas.

Purity control corrects

this area.

Disk magnets or rotatable
disk magnets correct
these areas (a-d).

b  

c

a

d

b

a

c

d