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–

 21 

–

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

2-7-2. Replacement of Power Button

2-7-1. Replacement of Light Guide

1 Push the claw to direction 
     of arrow and remove

2 Spring compression

3 Power Button

One screw
(+BVTP 3 

× 12)

1. Undress necessary wires that creates tension while

placing the chassis into Service Position.

–

 22 

–

•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 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.

• HOW TO HANDLE AN ANODE-CAP

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.

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

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

a

a

b

b

c

 Anode Button

•

Please remove necessary CRT support located on top left, top right, prior to removing
the CRT.

@º

 

@º

!¶

Demagnetic coil

4 Two screws 

(washer head)
(+P 4 

× 16)

!º

Two screws
(Tapping 7+
Crown Washer)

3 Speaker

(13 

× 7cm)

7 Speaker

(15 

× 6.5cm)

!£ Tension

spring

!¡

Chassis assy

!¢ Deflection

yoke

!™

C1 board

!ª

Anode 
cap

Coating earth assy

!∞

Picture tube

!¢ Cushion

9 Two screws

(Tapping 7+
Crown Washer)

8 Two screws 

(washer head)
(+P 4 

× 16)

@ª

Holder DGC

Cushion (50x550) DGC

Cushion (50x550) DGC

– 23 –

• 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

Purity control

Red

Blue

Green

Purity control
corrects this area.

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

Deflection yoke positioning
corrects these areas.

a

b

b

c

c

d

d

a

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.

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.)

}

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

– 24 –

Preparation :
• Before starting this adjustment, adjust the focus, horizontal

size and vertical size.

• Receive dot/hatch signal.
• Pic mode: Personal (Pic 90%, Brightness 50%, Col 50 %,

Hue 50%, Shp 50%).

1. (Moving horizontally), adjust the H.STAT control so that the

red, green and blue dots are on top of each other at the center
of the screen.

2. (Moving vertically), adjust the V.STAT magnet so that the

red, green and blue dots are on top of each other at the center
of the screen.

3. If the H.STAT variable resistor cannot bring the red, green

and blue dots together at the center of the screen, adjust the
horizontal convergence with the H.STAT variable resistor
and the V.STAT magnet in the manner given below.
(In this case, the H.STAT variable resistor and the V.STAT
magnet influence each other, so be sure to perform
adjustments while tracking.)

1

V. STAT

2

H. STAT VR

3

Center dot

R    G    B

R

G

B

H. STAT VR

V. STAT

Magnet

RV702

H. STAT

C1 Board

BMC (Hexapole)

V.STAT

DY pocket

Purity

V.STAT

BMC

Purity

R

R

R

R

G

G

G

G

B

B

B

B

a

a

a

b

b

b

b

R

R

G

G

B

B

a

a

b

b

b