Sony KV-AR252M61 Trinitron, Руководство по обслуживанию

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KV-AR252M61
RM-W102
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 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
Note : Test Equipment Required.
1. Pattern Generator
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.
• 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. Position neck assy as shown in Fig 2-1.
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.)
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.
8. If the beam does not land correctly in all the corners,
use a magnet to adjust it.
(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.
Disk magnets or rotatable
disk magnets correct these
areas (a-d).
Deflection yoke positioning
corrects these areas.
Purity control
Neck assy
G2 G1 G3
Align the edge of
the neck assy with
the edge of the G2 grid.
normal
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