DOWNLOAD Sony KV-29FS140 (serv.man2) Service Manual ↓ Size: 7.89 MB | Pages: 57 in PDF or view online for FREE

1  12 screws +BVTP2 4X16

2  Rear cover

1

1  Release AC Power Cord

2  Release wires from 

  3 wire holders

2  Rotate A Board and

 H2 Board

CV Board

 A Board 

H2 Board

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 CV 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].

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 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 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.

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  .

a

b

Anode Button

c

4

1

10

9

8

7

2

3

5

6

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:
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.  Feed in the white pattern signal.

2.  In order to reduce the geomagnetism on the set’s picture tube, face 

it east or west.

1.  Input a raster signal with the pattern generator.

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

control to the center as shown below:

Purity control

3.  Position the VM coil as shown below:

VM coil

G2

G1

G3

Align the edge of
the VM coil with
the edge of the G3 grid.

G4

4.  Set the raster signal of the pattern generator to green.

5.  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. 

Red

Blue

Green

6.  Move the defl ection yoke forward, and adjust so that the entire 

screen becomes green. 

7.  Switch over the raster signal to red, then blue and confi rm the 

condition.

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

with the defl ection yoke mounting screw.

9.  If landing at the corner is not right, adjust by using the disk 

magnets. 

a

b

b

c

c

d

d

a

Purity control
corrects this area.

Disc magnets or rotatable
disc magnets correct these
areas (a-d).

Deflection yoke positioning
corrects these areas.

 5. 

Oscilloscope

 6. 

Landing 

Checker

 7. 

XCV 

Adjuster