Beam Landing; Adjustment Procedure; Section 2: Set-Up Adjustments - Sony TRINITRON KV-21FA210 Manual De Servicio

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 as follows unless otherwise noted:
VIDEO MODE: Standard
PICTURE CONTROL: Normal
BRIGHTNESS CONTROL: Normal

2-1. BEAM LANDING

Before beginning adjustment procedure:
1. Degauss the entire screen.
2. Feed in the white pattern signal.

ADJUSTMENT PROCEDURE

1. Input a raster signal with the pattern generator.
2. Loosen the deflection yoke mounting screw, and set the purity
control to the center as shown below:
Purity Control
3. Turn the raster signal of the pattern generator to green.
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 2: SET-UP ADJUSTMENTS

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Perform the adjustments in order as follows:
1. Beam Landing
2. Convergence
3. Focus
4. Screen (G2)
5. 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. If landing at the corner is not right, adjust by using the disk magnets.
Disk magnets
or rotatable disk
magnets correct
these areas (a-d).
d
— 11 —
Purity control
corrects this area.
a b
c d
Deflection yoke positioning
corrects these areas.
b
c
KV-21FA210
a