DOWNLOAD Sony KV-HW21M50 Service Manual ↓ Size: 40.3 MB | Pages: 127 in PDF or view online for FREE

Model
KV-HW21M50
Pages
127
Size
40.3 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-hw21m50.pdf
Date

Sony KV-HW21M50 Service Manual ▷ View online

– 9 –
KV-HW21M50/M60/M63/M80/M83/P52
   RM-W101
KV-HW21N60
RM-W150
2 Rear cover
1 3D Speaker box assy
(KV-HW21M63/M83 only)
2
 Rear cover
1
Eight screws
(BVTP 4 
× 16)
1
Four screws
(BVTP 4 
× 16)
SECTION 1
DISASSEMBLY
1-2.
REAR COVER REMOVAL
1-3.
SPEAKER REMOVAL
1-4.
CHASSIS ASSY REMOVAL
1-5.
SERVICE POSITION
1-6.
TERMINAL BRACKET REMOVAL
2
 
Terminal 
     bracket
3
 
One screw
      (+BVTP 4x16)
1
 
One screw
      (+BVTP 3x16) 
1-1.
3D SPEAKER REMOVAL
– 10 –
KV-HW21M50/M60/M63/M80/M83/P52
   RM-W101
KV-HW21N60
RM-W150
1
 
Two screws
     (BVTP 3x12)
     (KV-HW21M63/M83 only) 
1-9.
PICTURE TUBE  REMOVAL
Note:
• Pls make sure the TV set is not in standing position before removing necessary CRT support located on bottom
right and left.
1) Place the TV set with the CRT face down on a cushion jig.
2) Remove the rear cover.
3) Unplug all under connecting leads from the Deflection Yoke, Degaussing Coil and CRT grounding strap.
8
 Degaussing Coil
2
 C Board Removal
5
 Chassis Assy Removal
6
 Support, CRT(2) Removal
3
 Loosen the Neck Assembly
fixing screw and removal
7
 Holder, DGC(2) 
Removal
9
 DGC(2) Removal
1
 Spring Tension (2)
Removal
0
 Nut locking, CRT (4)
4
 Loosen the Deflection Yoke
fixing screw and remove
A Board
1-8.
A BOARD REMOVAL
1-7.
J BOARD REMOVAL
(3D MODELS ONLY)
– 11 –
KV-HW21M50/M60/M63/M80/M83/P52
   RM-W101
KV-HW21N60
RM-W150
• 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
1
Turn up one side of the rubber cap in the direction
indicated by the arrow 
A.
2
Using a thumb pull up the rubber cap firmly in the di-
rection indicated by the arrow 
B.
3
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.
• HOW TO HANDLE AN ANODE-CAP
1
Do not damage the surface of anode-caps with
sharp shaped objects.
2
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.
3
Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage
the rubber.
anode button
a
a
b
b
c
– 12 –
KV-HW21M50/M60/M63/M80/M83/P52
   RM-W101
KV-HW21N60
RM-W150
• The following adjustments should be made when a
complete realignment is required or a new picture
tube is installed.
Set the controls as follows unless otherwise noted:
VIDEO model .....................................................  Standard
PICTURE control ..................................................  normal
BRIGHTNESS control ..........................................  normal
Perform the adjustments in the following order :
1. Beam Landing
2. Convergence
3. Focus
4. Screen(G2)
5. White Balance
Note : Test Equipment Required.
1. Pattern Generator
2. Degausser
3. DC Power Supply
4. Digital Multimeter
5. Oscilloscope
SECTION 2
SET-UP ADJUSTMENTS
Fig. 2-1
Fig. 2-4
Fig. 2-3
Fig. 2-2
Purity control
Red
Blue
Green
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
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.
2-1.
BEAM LANDING
Picture Mode: DYNAMIC
1. Input a white signal with the pattern generator.
Contrast
Brightness
2. Set the pattern generator raster signal to a green
raster.
3. Move the deflection yoke to the rear and adjust with
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 2-1 through 2-4.)
4. Move the deflection yoke forward and adjust so that
the entire screen is green. (See Figure 2-1.)
5. Switch the raster signal to blue then to red and verify
the condition.
6. When the position of the deflection yoke has been
decided fasten the deflection yoke with the screws
and DY spacers.
7. If the beam does not land correctly in all the corners,
use a magnet to adjust it. (See Figure 2-4.)
}
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