DOWNLOAD Sony KV-XG29N90 Service Manual ↓ Size: 2.74 MB | Pages: 53 in PDF or view online for FREE

Model
KV-XG29N90
Pages
53
Size
2.74 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-xg29n90.pdf
Date

Sony KV-XG29N90 Service Manual ▷ View online

 20 
KV
-XG29N90
RM-915
2-7. TERMINAL BRACKET REMOVAL
2-5-2. REPLACEMENT OF LIGHT GUIDE
2-5. REPLACEMENT OF PARTS
For replacement of the Control Button and Light Guide, unscrew them, exchange
with the new parts, and fix them with screws (+BVTP) respectively.
2-5-1. REPLACEMENT OF CONTROL BUTTON
2-6. D3 BOARD REMOVAL
Control button
Two screws
(+BVTP 3 
× 12)
One screw
(+BVTP 3 
× 12)
1 Three connectors
2 One claw
3 D3 board
3 Two claws
4 Terminal bracket
1 Two screws
     (+ BVTP 3 
× 12)
2 One screw
     (+ BVTP 4 
× 16)
 21 
KV
-XG29N90
RM-915
2-9. A AND B6 BOARDS REMOVAL
2-8. H2 BOARD REMOVAL
3 Two connectors
4 One screw (+BVTAP 3 
× 12)
1 Two connectors
4 Four claws
5 H2 Board
2 Two connectors
4 B6 Board  
5 A Board
1 Two screws
     (+BVTAP 3 
× 12)
2 Two screws
     (+BVTAP 3 
× 12)
2-10 PICTURE TUBE  REMOVAL
Note: The picture tube for New Zealand model is upside down,
and the position for anode cap and tension spring are changed
accordingly.
! Four DGC clips
!ª Degaussing coil
0 Four claws
1 Four screws 
(+BVTP 3 
× 16)
2 Speaker Bracket
assy (L)
5 Speaker Bracket
assy (R)
!¢ Two screws
(Tapping)
6 Chassis assy
9 Deflection
yoke
8 Neck assy
7 C6 board
5 Anode cap
! Picture tube
Cushion
!¢ Two screws
(Tapping)
!£ Tension
spring
3 Eight screws 
(+BVTP 4 
× 16)
4 Eight screws 
(+BVTP 4 
× 16)
6 Four screws 
(+BVTP 3 
× 16)
DGC holder
DGC holder
Cushion (50 
× 550) 
DGC
Cushion (50 
× 550) 
DGC
 22 
KV
-XG29N90
RM-915
REMOVAL OF ANODE-CAP
NOTE : After removing the anode, short circuit the anode of the picture tube and
the anode cap to the metal chassis, CRT shield or carbon paint on the
CRT.
REMOVING PROCEDURES
Do not damage the surface of anode-caps with sharp shaped objects.
Do not press the rubber too hard so as not to damage the inside of anode-cap.
A metal fitting called the shatter-hook terminal is built into the rubber.
Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage the rubber.
• HOW TO HANDLE AN ANODE-CAP
When one side of the rubber cap is separated from the anode button,  the anode-cap
can be removed by turning up the rubber cap and pulling it up in the direction of the
arrow 
c.
Using a thumb pull up the rubber cap firmly in the direction indicated by the arrow b.
Turn up one side of the rubber cap in the direction indicated by the arrow a.
Anode button
a
a
b
b
c
– 23 –
KV-XG29N90
RM-915
• 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.
Controls and switches should be set as follows unless otherwise noted:
PICTURE control ...........................................................  normal
BRIGHTNESS control ...................................................  normal
Perform the adjustments in the following order :
1. Beam Landing
2. Convergence
3. Focus
4. White Balance
Note :  Test Equipment Required.
1. Color-bar/Pattern Generator
2. Degausser
3. Oscilloscope
SECTION 3
SET-UP ADJUSTMENTS
................................................................................................................................................................................................................................
}
normal
Preparation :
• In order to reduce the influence of geomagnetism on the set's
picture tube, face it east or west.
• Switch on the set's power and degauss with the degausser.
3-1. BEAM LANDING
1. Input a white signal with the pattern generator.
Contrast
Brightness
2. Position neck assy as shown in Fig3-2.
3. Set the pattern generator raster signal to a green raster.
4. Move the deflection yoke to the rear and adjust with the  purity
control so that the green is at the center and the blue and the red
take up equally sized areas on each side.
(See Figures 3-1 through 3-4.)
5. Move the deflection yoke forward and adjust so that the entire
screen is green. (See Figure 3-2.)
6. Switch the raster signal to blue, then to red and verify the
condition.
7. When the position of the deflection yoke has been decided,
fasten the deflection yoke with the screws and DY spacers.
8. If the beam does not land correctly in all the corners, use a
magnet to adjust it.
(See Figure 3-5.)
Fig. 3-1
Neck assy
G2
G1
G3
Behind the G2 edge
Fig. 3-2
Fig. 3-3
Purity control
Fig. 3-4
Red
Blue
Green
Fig. 3-5
Purity control
corrects this area.
Disk magnets or rotatable
disk magnets correct these
areas (a-d).
Deflection yoke positioning
corrects these areas.
a
b
b
c
c
d
d
a
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