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A Board

GK Board

C Board

Chassis Assembly

Rear Cover

6 Screws 

+BVTP 4 x 16 

4 Screws

+BVTP 4 x 16 

4 Screws 

+BVTP 4 x 16

1.  Discharge the anode of the CRT and remove the anode cap.
2.  Unplug all interconnecting leads from the deflection 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 fixing screw and remove.
6.  Loosen the deflection yoke fixing screw and remove.
7.  Place the set with the CRT face down on a cushion and 

remove the degaussing coil holders.

8.  Remove the degaussing coils.
9.  Remove the CRT grounding strap and spring tension devices.
10. Unscrew the four CRT fixing screws [located on each CRT 

corner] and remove the CRT  [Take care not to handle the 

CRT by the neck].

Coated

Earth

Ground

Strap

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

NOTE: After removing the anode cap, short circuit the anode of the picture tube and the anode cap 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 firmly 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 fitting called a shatter-hook terminal is 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.

4

10

6

9

8

1

3

5

7

2

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.

The controls and switch should be set as follows unless otherwise 

noted:

PICTURE CONTROL: normal

BRIGHTNESS CONTROL: normal

  1. 

Beam Landing

  2. 

Convergence

  3. 

Focus

  4. 

Screen (G2)/White Balance

  1. 

Color Bar Pattern Generator

  2. 

Degausser

  3. 

DC Power Supply

  4. 

Digital Multimeter

  5. 

Oscilloscope

  6. 

CRT Analyzer

•  Input a white pattern signal.
•  Face the picture tube in an East or West direction to reduce the 

influence of geomagnetism.

1.  Input white pattern from pattern generator.
2.  Loosen the deflection yoke mounting screw, and set  the purity control 

to the center as shown below:

Purity Control

3.  Input green pattern from pattern generator.
4.  Move the deflection yoke backward, and adjust with the purity control 

so that green is in the center and red and blue are even on both sides. 

Blue

Red

Green

5.  Move the deflection yoke forward, and adjust so that the entire screen 

becomes green. 

6.  Switch over the raster signal to red and blue and confirm the 

condition.

7.  When the position of the deflection yoke is determined, tighten it with 

the deflection yoke mounting screw.

8.  When landing at the corner is not right, adjust by using the disk 

magnets. 

a

c

b

d

b

a

c

d

Purity control

corrects this area

Disk magnets

or rotatable disk
magnets correct

these areas (a-d)

Deflection yoke positioning

corrects these areas

•  Perform FOCUS, V. LIN and V. SIZE adjustments.
•  Set BRIGHTNESS control to minimum.
•  Input dot pattern.

B

G

R

Center dot

V.STAT magnet

RV701 V.STAT

R   G   B

1.  Adjust V. STAT magnet to converge red, green and blue dots in the 

center of the screen (Vertical movement).

  Tilt the V. STAT magnet and adjust static convergence to open or 

close the V. STAT magnet.

2.  When the V. STAT magnet is moved in the direction of arrow a and b, 

red, green, and blue dots move as shown below:

B

R

G

B

R

G

R G

B

G

R

B

G

B

R

B G

R

1

2

3

a

b

a

b

b

b

a

a

b

b

a

b

a

b

The respective dot positions resulting from moving each magnet interact, 

so perform adjustment while tracking.

1  Use the V.STAT tabs to adjust the red, green, and blue dots so they 

line up at the center of the screen (move the dots in a horizontal 

direction).

R G

B

R G B

R

G B

R G B

R G B

R G B

1.  Input cross-hatch pattern, adjust PICTURE to minimum and 

BRIGHTNESS to normal.

2.  Adjust the deflection yoke upright so it touches the CRT.
3.  Adjust so that the Y separation axis correction magnet on the neck 

assembly is symmetrical from top to bottom (open state).

BMC MA

GNET

PURITY

V.STAT

4.  Return the deflection yoke to its original position.