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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 CB 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.  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 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

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.

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.

4

10

6

3

5

7

2

  9

8

1

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)

 5.  White 

Balance

Test Equipment Required:
 

1. 

Color Bar Pattern Generator

 2.  Degausser
 

3. 

DC Power Supply

 4.  Digital 

Multimeter

Preparation:
•  Degauss the entire screen.

•  Feed in the white pattern signal.

1.  Input a raster signal with the pattern generator.

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

to the center as shown below:

Purity Control

3.  Turn the raster signal of the pattern generator to green.

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.

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

the center of the screen (Vertical movement adjust V.STAT RV to 
converge).

B

G

R

Center dot

V.STAT magnet

RV701 V.STAT

R   G   B

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

close the V. STAT magnet.

 

When the V. STAT magnet is moved in the direction of arrows 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

If the blue dot does not converge with the red and green dots, perform 
the following:

1  Move BMC magnet (a) to correct insuffi cient H.Static convergence.

2.  Rotate BMC magnet (b) to correct insuffi cient V.Static convergence.

3.  After adjusting the BMC magnet, repeat Beam Landing.

b

BMC magnet

BMC MA

GNET

PURITY

V-STAT

Before performing this adjustment, perform Horizontal and Vertical Static 
Convergence Adjustments.

Preparation:
1.  Slightly loosen defl ection yoke screw.

2.  Remove defl ection yoke spacers.

3.  Move the defl ection yoke for best convergence as shown:

R G B

B G R

R
G

B

R

G

B

B G R R G B

R G B

R

R

R

G

B

G

B

G

B

R G B

B G R

4  Tighten the defl ection yoke screw.

5.  Install the defl ection yoke spacers.

Preparation:
1.  Input crosshatch pattern.

2.  Adjust PICTURE QUALITY to standard, PICTURE and BRIGHTNESS 

to 50%, and OTHER to standard.

3.  Adjust the Horizontal Convergence of red and blue dots by tilting the 

TLH plate on the defl ection yoke.

TLH+
TLH-

  B R
(R)(B)

  R B
(B)(R)

4.  Adjust XCV core to balance X axis.

5.  Adjust YCH VR to balance Y axis.

1.  Affi x a permalloy assembly corresponding to the misconverged areas. 

b

a

c

d

a

b

a-d: screen-corner

misconvergence

c

d

1.  Adjust FOCUS control for best picture.

Focus (FV)

Screen (G2)

1.   Input dot pattern from the pattern generator.

2.   Set the PICTURE and BRIGHTNESS controls at minimum and 

COLOR control at normal.

3.  Adjust SBRT , GCUT, BCUT in service mode with an oscilloscope as 

shown below so that voltages on the red, green, and blue cathodes 
are 170 VDC.

pedestal

GND

170Vdc

 170 + 4.0 Vdc

4.  Observe the screen and adjust SCREEN (G2) VR in FBT to obtain the 

faintly visible background of dot signal.