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– 25 –

3

 Beznet assy

2

 Three screws

(Tapping screw 4X20)

1

Twelve screws
(Tapping screw 4X20)

1

 Twenty four screws

(Tapping screw 4X20)

2

 Mirror cover assy

2

 HV cable

turn 90˚

1

 Rubber cap

Hook

Gutter

(1) Remover

(2) Installation

1

 HV cable

1

 Four screws

(Head tapping screws 4X20)

2

 Lens

6

 Four screws

(+BVTP 4X12)

7

 Picture tube (R)

8

 Tension spring

5

 Deflection yoke

4

Neck assy

3

 CR board

Lens

Picture tube

CAUTION:Removing the arrow-marked screws

is strictly inhibited.

If removed, it may cause liquid spill.

– 26 –

Side board (L)
4-057-612-01

Side board (R)
4-057-613-01

Screw (+BVTP 4X12)
7-685-661-14

Chassis stay
4-058-638-01

3

 Two screws

(Tapping screw 4X20)

4

 Shield board

5

 Eight screws

(Head tapping screw 4X20)

7

 Two screws

(+BVTP 4X12)

8

 X-RAY shield (L)

6

 Picture tube

bracket assy

Cabinet assy

0

 X-RAY shield (R)

9

 Two screws

(+BVTP 4X12)

1

 Three screws

(Head tapping screw 4X20)

2

 Chassis assy

1) Remove 

1

 three screws (head tapping screw 4X20) and pull out 

2

 chassis assy from cabinet

assy.

2) Remove 

3

 two screws (tapping screw 4X20) and remove 

4

 shield board.

3) Remove 

5

 eight screws (head tapping screw 4X20) and release 

6

 picture tube bracket assy

from cabinet assy.

4) Remove 

7

 two screws (+BVTP 4X12) and remove 

8

 X-RAY shield (L).

5) Remove 

9

 two screws (+BVTP 4X12) and remove 

0

 X-RAY shield (R).

– 27 –

Picture tube bracket assy

2

 Six screws

(+BVTP 4X12)

Notch

Hook

4

 Six screws

(+BVTP 4X12)

Notch

Hook

1

 Side board (L)

3

 Side board (R)

1) Remove CR board from picture tube.
2) Lift up picture tube bracket assy and fit the hook of 

1

 side board (L) to the notch on the assy.

Then fix then with 

2

 six screws (+BVTP 4X12).

3) Lift up picture tube bracket assy and fit the hook of 

3

 side board (R) to the notch on the assy.

Then fix then with 

4

 six screws (+BVTP 4X12).

Always be sure to remove the picture tube before trying to set the sideboards (R L).
The CR board may be damaged if left in position while setting the sideboards and it may be impossible
to set the sideboards correctly.

2

 HA board

1

 Chassis assy

Chassis stays

1) Put 

1

 chassis assy on chassis stays.

2) Put 

2

 HA board on 

1

 chassis assy

3) Put your hands to side board (L) and (R).
4) You can carry the chassis assy in this condition.

 Make sure that the CR board has been removed before installing the chassis assy.

– 28 –

1. Receive the Monoscope signal.
2. Set 50% BRIGHTNESS and minimum PICTURE.
3. Turn the red VR on the FOCUS block all the way to the left

and then gradually turn it to the right until the point where
you can see the retrace line.

4. Next gradually turn it to the left to the position where the

retrace line disappears.

1. Select VIDEO mode without signals.
2. Connect an oscilloscope to the TP701(KR), TP731(KG) and

TP761(KB) of CR board, CG board and CB board.

3. Adjust  R, G and B screen voltage to 170 – 173V with screen

VR on the focusblock.

4. After adjusting the screen VR on the focus block confirm

that the retrace lines are not visible. If retrace lines are vis-
ible reduce the setting of the screen VR until the retrace lines
are not visible.

R

G

B

SCREEN

R

G

B

FOCUS

FOCUS block

1. Loose the lens screw.
2. Set in service mode.
3. Use VP on the service mode menu to shown only the green

color.

4. Press the Commander Menu button and select FEATURES

and CONVERGENCE to display the test signal (crosshatch)
on the screen.

5. Rotate the green lens and align with the optimal focus point

from the test signal.

6. Use RG-RH from the service mode menu to set to green and

red.

7. Output the test signal and rotate the red lens to obtain the

optimum focus at the point where the red and green spots
overlap.

8. Use RG-BH from the service mode menu to set to red and

blue.

9. Output the test signal and rotate the blue lens to obtain the

optimum focus at the point where the blue and red spots over-
lap.

10. Tighten the lens screw.

Test signal

1. Set in service mode.
2. Use VP on the service mode menu to shown only the green

color.

3. Press the Commander Menu button (convergence) and out-

put the test signal (crosshach).

4. Rotate the green VR on the FOCUS block and align to ob-

tain the optimal focus point.

5. Use RG-RH from the service mode menu to set to green and

red.

6. Output the test signal and rotate the red VR to obtain the

optimum focus at the point where the red and green spots
overlap.

7. Use RG-BH from the service mode menu to set to red and

blue.

8. Output the test signal and rotate the blue VR aligning to ob-

tain the optimum focus at the point where the blue and green
spots overlap.

 

170

}

VDC

pedestal

GND

Scanning line visible.

A

B

Minimize both A and B.

Lens

pedestal

Minimize both A and B.

B

A

Scanning line visible.

170 

– 

173V