Sony KV-2199M5J Service Manual ▷ View online
– 9 –
1
Turn up one side of the rubber cap in
the direction indicated by the arrow
the direction indicated by the arrow
a
.
2
Using a thumb, pull up the rubber
cap firmly in the direction indicated
by the arrow
cap firmly in the direction indicated
by the arrow
b
.
1
Don’t hurt the surface of anode-caps with
sharp shaped objects!
sharp shaped objects!
2
Don’t press the rubber too hard so as not to
damage the inside of anode-caps!
A material fitting called the shatter-hook
terminal is built into the rubber.
damage the inside of anode-caps!
A material fitting called the shatter-hook
terminal is built into the rubber.
3
Don’t turn the foot of rubber over too hard!
The shatter-hook terminal will stick out or
damage the rubber.
The shatter-hook terminal will stick out or
damage the rubber.
•
HOW TO HANDLE AN ANODE-CAP
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
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
.
•
REMOVAL OF ANODE-CAP
NOTE : Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or carbon paint on the
CRT, after removing the anode.
•
REMOVING PROCEDURES
2-5. DEMAGNETIZATION COIL AND PICTURE TUBE REMOVAL
a
b
b
c
a
Anode button
2
A board
3
C board
5
Deflection yoke
Cushion
6
Four screws
(Tapping screws)
1
Anode cap
9
Picture tube
4
VM board
8
Spring
7
Demagnetization
coil
– 10 –
•
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 switch should be set as follows unless otherwise noted:
PICTURE control ........................................................... normal
BRIGHTNESS control ................................................... normal
SECTION 3
SET-UP ADJUSTMENTS
Fig. 3-1
Preparations :
•
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 the white raster signal with the pattern generator.
Contrast
Brightness
2. Set the pattern generator raster signal to green.
3. 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 3-3.)
4. Move the deflection yoke forward and adjust so that the entire
screen is green. (See Figure 3-1.)
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.
7. If the beam does not land correctly in all the corners, use a
magnet to adjust it.
(See Figure 3-4.)
Perform the adjustments in order as follows :
1. Beam Landing
2. Convergence
3. Focus
4. White Balance
Note : Test Equipment Required.
1. Color-bar/Pattern Generator
2. Degausser
3. Oscilloscope
Fig. 3-2
Fig. 3-4
}
normal
.................................................................................................................................................................................................................................
Fig. 3-3
Purity control
GREEN
BLUE RED
Deflection yoke positioning
corrects these areas.
Purity control corrects
this area.
Disk magnets or rotatable
disk magnets correct
these areas (a-d).
disk magnets correct
these areas (a-d).
b
c
a
d
– 11 –
3-2. CONVERGENCE
Preparation :
•
Before starting this adjustment, adjust the focus, horizontal size,
and vertical size.
•
Minimize the brightness setting.
•
Provide dot pattern.
(1)
Horizontal and Vertical Static Convergence
If the V.STAT magnet is moved in the direction of the a and b
arrows, the red, green, and blue points move as shown below.
1. (Moving vertically), adjust the V.STAT magnet so that the red,
green, and blue points are on top of each other at the center of
the screen.
2. (Moving horizontally), adjust the V.STAT magnet so that the
red, green, and blue points are on top of each other at the center
of the screen.
3. Tilt the V.STAT magnet and adjust the static convergence by
opening or closing the V.STAT magnet.
R G B
G
R
B
Center dot
V.STAT Magnet
C board
RV 701
SCREEN (G2)
B
R
B
R
a
b
b
b
a
b
a
b
a
R
G
B
b
B
G
R
b
b
a
a
1
2
3
G
G
B G R
R G B
V.STAT
Purity
– 12 –
(2) Dynamic Convergence Adjustment
Preparation :
•
Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence.
1. Slightly loosen the deflection yoke screws.
2. Remove the deflection yoke spacer.
3. Move the deflection yoke as shown in the figure below and
optimize the convergence.
4. Tighten the deflection yoke screws.
5. Install the deflection yoke spacer.
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
R
G
B
(3) Screen-corner Convergence
a-d : screen-corner
misconvergence
misconvergence
b
a
c
d
Affix a Convergence correct
piece corresponding to the
misconverged areas
piece corresponding to the
misconverged areas
Convergence correct piece
a
b
c
d
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