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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 CA and VA 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

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

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.

10

1

9

8

7

6

5

4

3

2

a

b

Anode Button

c

Turn up one side of the rubber cap 
inthe direction indicated by arrow  a  .

1

Use your thumb to pull the rubber
cap fi rmly in the direction indicated
by arrow  b  .

2

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  .

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.

Set the controls as follows unless otherwise noted:
VIDEO MODE: Standard
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

Note Test Equipment Required:
 

1. 

Color Bar Pattern Generator

 

2. 

Degausser

 

3. 

DC Power Supply

 

4. 

Digital Multimeter

Before beginning adjustment procedure:

1.  Degauss the entire screen.

2.  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.  If 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

Before starting convergence adjustments:

1  Perform FOCUS, VLIN and VSIZE adjustments.

2.  Set BRIGHTNESS control to minimum.

3.  Feed in 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 RV701 to 
converge).

B

G

R

Center dot

V.STAT magnet

RV701

V.STAT

B

G

R

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 arrow a and b, 
red, green, and blue dots move as shown below:

B

R

G

B

R

G

R

G B

B

G R

1

2

b

b

b

b

b

b

b

a

a

b

a

a

a

a

3

R

G

B

B

G

R

If the blue dot does not converge with the red and green dots, peform 
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 Adjustment.

BMC MAGNET

PURITY

V.STAT

b

BMC magnet

a

Before performing this adjustment, perform Horizontal  and Vertical Static 
Convergence Adjustment.
1.  Slightly loosen defl ection yoke screw.

2.  Remove defl ection yoke spacers.

3.  Move the defl ection yoke for best convergence as  

 

shown below:

B

G

R

G

B

R

G

B

R

R

R

G

B

G

B

G

B

R

B

G

R

G

B

G

B

R

R

G

B

G

G

B

R B

R

R

4.  Tighten the defl ection yoke screw.

5.  Install the defl ection yoke spacers.

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.

(TLV)

YCH

XCV

TLV

CA
Board

VA
Board

RV701

 V.STAT

TLH Plate

  B R      R B
(R)(B)  (B)(R)

TLH+
TLH-

4.  Adjust XCV core to balance X axis.

5.  Adjust YCH VR to balance Y axis.

6.  Adjust vertical red and blue convergence with V.TILT (TLV VR.) 

 

Note: Perform adjustment 3-6 while tracking items 1 and 2.

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

b

a

c

d

a

b

d

a-d: screen-corner

misconvergence

c

1.  Adjust FOCUS control for best pictures.

1.  Input a dot pattern.

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 ± 2VDC.

Pedestal

170 ± 2VDC

Ground

Focus (FV)

Screen (G2)