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Rear Cover

Claw

Chassis Assembly

A Board

GK Board

7 Screws 
+BVTP 4 x 16 

C Board

4 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 defl ection yoke, 

neck assembly, degaussing coils and CRT grounding strap.

3.  Remove the Sub-Woofer Assemblies.

4.  Remove the C Board from the CRT.

5.  Remove the chassis assembly.

6.  Loosen the neck assembly fi xing screw and remove.

7.  Loosen the defl ection yoke fi xing screw and remove.

8.  Place the set with the CRT face down on a cushion and 

remove the degaussing coil holders.

9.  Remove the degaussing coils.

10. Remove the CRT grounding strap and spring tension devices.

11. 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].

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 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 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.

11

1

2

4

5

6

7

8

9

10

3

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

Perform the adjustments in order as follows:
 1.  Beam 

Landing

 2.  Convergence
 3.  Focus
 

4. 

Screen (G2)/White Balance

Test Equipment Required:
 

1. 

Color Bar Pattern Generator

 2.  Degausser
 

3. 

DC Power Supply

 4.  Digital 

Multimeter

 5.  Oscilloscope
 6.  CRT 

Analyzer

Preparation:
•  Input a white pattern signal.

•  Face the picture tube in an East or West direction to reduce the 

infl uence of geomagnetism.

1.  Input white pattern from pattern generator.

2.  Loosen the defl ection 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 defl ection 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 defl ection yoke forward, and adjust so that the entire screen 

becomes green. 

6.  Switch over the raster signal to red and blue and confi rm the 

condition.

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

the defl ection 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

Preparation:
•  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 defl ection 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 defl ection yoke to its original position.