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1

  Discharge the anode of the CRT and remove the anode cap.

2

  Unplug all interconnecting leads from the defl ection yoke, neck 

assembly, degaussing coils and CRT grounding strap.

3

  Remove the C Board from the CRT.

4

  Remove the chassis assembly.

5

  Loosen the neck assembly fi xing screw and remove.

6

  Loosen the defl ection yoke fi xing screw and remove.

7

  Remove (2) screws from the degaussing coil holder assemblies to 

release the CRT grounding strap.

8

  Place the set with the CRT face down on a cushion and remove 

the degaussing coil holders.

9

  Remove the CRT supports (on both left and right sides) by lifting 

up on the clip and gently sliding it up and out.

10

  Remove (4) screws holding in the Spacer -36 at the top of the 

cabinet and remove, making sure to remove the degaussing coil 
holders with it.

Coated

Earth

Ground

Strap

1

2

3

4

5

6

7

8

9

10

11

12

13

14

11

  Remove the degaussing coil.

12

  Remove the CRT grounding strap and tension springs.

13

  Unscrew the four CRT fi xing screws [located on each CRT corner] 

and remove the CRT  [Take care not to handle the CRT by the 
neck assembly.]

 

14

  IMPORTANT:  When replacing the CRT, care must be taken in 

replacing the CRT spacers into the cabinet.  The spacer must be 
completely reset prior to re-inserting the CRT screws (see fi gure 
above for proper setting of CRT spacer).

 

1

1

  Leaving the boards intact in the Main 

Bracket, pull up and rotate both the A and 
D boards in order to service the unit.

WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT before attempting to remove 
the anode cap. Short between the anode and CRT coated earth ground strap.

NOTE:  After removing the anode cap, short circuit to either the metal chassis, CRT shield, or carbon painted on the CRT. 

Turn up one side of the rubber cap in the 

direction indicated by arrow  a  .

Use your thumb to pull the rubber cap fi rmly

in the direction indicated by arrow 

b

.

When one side of the rubber cap separates 

from the anode button, the anode cap can
be removed by turning the rubber cap and

pulling it in the direction of arrow  c .

1.  Do not use sharp objects which may cause damage to the surface of the anode 

cap. 

2.  To avoid damaging the anode cap, do not squeeze the rubber covering too hard. 

A material fi tting called a shatter-hook terminalis built into the rubber. 

3.  Do not force turn the foot of the rubber cover. This may cause the shatter-hook 

terminal to protrude and damage the rubber.

Location of ring magnets for adjustment:

Purity Magnet

BMC Magnet

V. STAT Magnet

PURITY MAGNETS
Adjust the purity magnets so that the adjusting tabs are straight up.

Purity
Magnets

V-STAT MAGNETS
Adjust the V-Stat Magnets so that the adjustment tabs are approximately 
± 45° from 0° (a total of 90° between each tab)

( 1 ) on the edges of each tab should be 

V-STAT
Magnet

0˚

+45˚

-

 

45˚

1

BMC MAGNETS
Adjust the BMC Magnets so that the adjustment tabs are approximately 
± 40° from 90°.

NOTE:  The rounded points ( 1 ) on the edges of each tab should 

Make sure that the following items are checked and adjusted  
whenever the CRT or Defl ection Yoke have been replaced.

BMC
Magnet

1

90˚

130˚

50˚

1.  The left and right sides of the neck assembly must be straight up 

and down.

2.  Make sure that the rear edge of the plastic fl ange on the neck 

assembly is positioned directly above the edge of the CRT pin 
electrodes that are soldered to G1 within the neck of the CRT (see 

1  below)

G1

Neck Ass'y
Flange

Flange Too

Far Foreward

Flange Too

Far Rearward

Electrodes

CRT Neck

Neck
Ass'y
Flange

1

REQUIRED EQUIPMENT:
 

NTSC Video Pattern Generator (into VIDEO-1 input)

 

Landing Magnets (for correcting mislanding in the corners of the set)

SET-UP CONDITION:
 DISPLAY 

MODE: 

FULL

 VIDEO 

SOURCE: 

VIDEO-1

 

PICTURE MODE: STANDARD  (select the STANDARD mode from 
the menu, then press the RESET button on the remote control to set 
the STANDARD settings to the factory settings.)

 

TILT CORRECTION: Set to 0 (Zero)

 

VERTICAL CORRECTION: Set to 0 (Zero)

 

PICTURE TUBE POSITION: Face in an East or West Direction**

PROCEDURE:
1.  Turn on power to the set and make sure that the degauss circuit is in 

working order (a brief hum will sound from the degauss coils).

2.  Loosen the defl ection yoke mounting screw, and set  the purity 

magnet adjustment tabs to the center as shown below:

Purity Magnet Adjustment Tabs

3.  Input a green raster from the pattern generator.

4.  Move the defl ection yoke backwards, and adjust the purity ring 

magnets so that the center of the screen is green, and the red and 
blue areas on either side of the screen are approximately the same 
size as shown in the fi gure below: 

Blue

Red

Green

5.  Move the defl ection yoke forward until the entire screen becomes 

green. 

6.  Confi rm the purity for both the red and blue rasters.

7.  Tighten the defl ection yoke mounting screw just enough to keep the 

yoke from moving forward or backward, but not too tight as to keep 
it from rotating.

8.  Input a crosshatch pattern from the generator.  Rotate the yoke so 

that the crosshatch’s top and bottom lines are as even with the 
bezel as possible.  Secure the defl ection yoke by fully tightening the 
mounting screw.

9.  Use a DY Spacer (p/n: 4-053-005-01) between the defl ection yoke 

and the CRT in order to maintain the yoke position in each axis.

10. Add disk magnets (p/n: 1-452-032-00) to the back of the CRT as 

necessary to correct mislanding in the corners of the screen.

b

d

a

c

Purity control

corrects this area

Deflection yoke positioning

corrects these areas

Disk magnets

or rotatable disk

magnets correct

these areas (a-d)