Set-Up Adjustments; Beam Landing - Sony KV-32XBR200 Service Manual

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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.
Set the controls and switch as follows unless
otherwise noted:
VIDEO MODE: STANDARD
PICTURE control ................. 100%
BRIGHTNESS control ......... 50%

3-1. BEAM LANDING

Preparation:
•
Input a white pattern signal.
•
Face the picture tube in a East or West direction to reduce the influence of geomagnetism.
NOTE: Do not use the hand degausser because it magnetizes the CRT .
1. Input white pattern from pattern generator.
2. Loosen the deflection yoke mounting screw, and set
the purity control to the center as shown below:
3. Input green pattern from pattern generator.
4. Move the deflection yoke backward, and adjust with
the purity control so that green is in the center and
red and blue are even on both sides.
5. Move the deflection yoke forward, and adjust so that
the entire screen becomes green.
SECTION 3

SET-UP ADJUSTMENTS

B R
G
Perform the adjustments in order as follows:
1. Beam Landing
2. Convergence
3. Focus
4. Screen (G2)/White Balance
Note: Test Equipment Required
1. Color Bar Pattern Generator
2. Degausser
3. DC Power Supply
4. Digital Multimeter
6. Switch over the raster signal to red and blue and confirm
the condition.
7. When the position of the deflection yoke is determined,
tighten it with the deflection yoke mounting screw.
8. When landing at the corner is not right, adjust by using
the disk magnets.
Purity control corrects this area.
b
c
Deflection yoke positioning
corrects these areas.
a
d
— 16 —
Disk magnets or
a
rotatable disk magnets
correct these areas
(a-d).
d
b
c