Sony KV-AR292M50 Service Manual ▷ View online
– 6 –
KV-AR292M50/AR292M81
RM-W102
1 Two screws
(+BVTP 4 × 16)
2 Two screws
(Washer Head)
(+P4 × 16)
(+P4 × 16)
1 Two hooks
4 One screw
(+BVTP 3 x 12)
2 F Board
3 BC Board
1 One screw
(+BVTP 3 × 12
Type2 IT-3)
2 Two hooks
6 One screw
(+BVTP 3 × 12
Type2 IT-3)
7 J1 board
5 Terminal bracket
3 One screw
(+BVTP 4 × 12
Type2 IT-3)
4 Two screws
(+BVTP 3 × 12
Type2 IT-3)
1 Nine screws
(+BVTP 4 × 16
Type2 IT-3)
2 Rear cover
SECTION 1
DISASSEMBLY
1-1.
REAR COVER REMOVAL
1-2.
SPEAKER REMOVAL
1-5.
TERMINAL BRACKET AND J1 BOARD
REMOVAL
1-6.
F AND BC BOARDS REMOVAL
1-3.
CHASSIS ASSY REMOVAL
1-4.
SERVICE POSITION
– 7 –
KV-AR292M50/AR292M81
RM-W102
1 Four screws
(+BVTAP 3 × 12)
(+BVTAP 3 × 12)
4 Two screws (Washer head)
(+BVTP 3 × 12)
(+BVTP 3 × 12)
3 Four Hooks
2 A Board
2 Five Hooks
5 Three Hooks
3 Cover, H
4 H2 Board
1
H1 Board
1-9.
H1 AND H2 BOARDS REMOVAL
1-10. A BOARD REMOVAL
1-7.
D3 BOARD REMOVAL
2 D3 Board
1 Three Hooks
1-8.
B BOARD REMOVAL
1 Five Hooks
2 B
Board
– 8 –
KV-AR292M50/AR292M81
RM-W102
• 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 direc-
tion 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.
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.
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.
the rubber.
a
a
b
b
c
anode button
1-11. PICTURE TUBE REMOVAL
Note:
•
Please make sure the TV set is not in standing position before removing necessary CRT support located on bottom
right and left.
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 inter connecting leads from the Deflection Yoke, Neck assy, Degaussing Coil.
2) Remove the rear cover.
3) Unplug all inter connecting leads from the Deflection Yoke, Neck assy, Degaussing Coil.
6
Earth Coating Assy
4 Anode Cap Removal
5 Band, DGC Removal
8 C Board Removal
9 Chassis Assy Removal
0
VM Board Removal
qd
Holder, DGC(2) Removal
qs
Spring Tension(2) Removal
qg
Screw Tapping 7+
Crown Washer
qf
Degaussing Coil
7 Loosen the Neck Assembly
fixing screw and removal
fixing screw and removal
qa
Loosen the Deflection Yoke
fixing screw and remove
– 9 –
KV-AR292M50/AR292M81
RM-W102
The following adjustments should be made when a
complete realignment is required or a new picture tube is
installed.
complete realignment is required or a new picture tube is
installed.
Set the controls as follows unless otherwise noted:
VIDEO MODE: .................................................... Standard
PICTURE CONTROL: ......................................... Normal
BRIGHTNESS CONTROL: ................................. Normal
VIDEO MODE: .................................................... 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
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
2. Degausser
3. DC Power Supply
4. Digital Multimeter
5. Oscilloscope
SECTION 2
SET-UP ADJUSTMENTS
Preparation :
•
•
In order to reduce the influence of geomagnetism on
the set's picture tube, face it east or west.
the set's picture tube, face it east or west.
•
Switch on the set's power and degauss with the
degausser.
degausser.
2-1. BEAM LANDING
PICTURE MODE: DYNAMIC
1. Input a white signal with the pattern generator.
Contrast
Brightness
Brightness
2. Position neck assy as shown in Fig 2-1.
3. Set the pattern generator raster signal to a green
3. Set the pattern generator raster signal to a green
raster.
4. 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. (Figures 2-2 through 2-4.)
blue and the red take up equally sized areas on each
side. (Figures 2-2 through 2-4.)
5. Move the deflection yoke forward and adjust so that the
entire screen is green. (Figure 2-2.)
6. Switch the raster signal to blue, then to red and verify
the condition.
7. When the position of the deflection yoke have been
decided, fasten the deflection yoke with the screws and
DY spacers.
DY spacers.
8. If the beam does not land correctly in all the corners,
use a magnet to adjust it.
(Figure 2-5.)
(Figure 2-5.)
Fig. 2-1
Fig. 2-2
Fig. 2-5
Fig. 2-4
Fig. 2-3
Red
Blue
Green
a
b
b
c
c
d
d
a
Purity control
corrects this area.
corrects this area.
Disk magnets or rotatable
disk magnets correct these
areas (a-d).
disk magnets correct these
areas (a-d).
Deflection yoke positioning
corrects these areas.
corrects these areas.
Purity control
Neck assy
G2
G1
G3
Align the edge of
the neck assy with
the edge of the G2 grid.
the neck assy with
the edge of the G2 grid.
normal
}
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