Section 2: Set-Up Adjustments; Beam Landing - Sony TRINITRON KV-29FS150 Service Manual

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:
Picture control NORMAL
Brightness control NORMAL

2-1. BEAM LANDING

Before beginning adjustment procedure:
1. Feed in the white pattern signal.
2. In order to reduce the geomagnetism on the set's picture tube, face
it east or west.
Adjustment Procedure
1. Input a raster signal with the pattern generator.
2. Loosen the defl ection yoke (DY) mounting screw, and set the purity
control to the center as shown below:
Purity control
3. Position the VM coil as shown below:
VM coil
G1 G2
4. Set the raster signal of the pattern generator to green.
5. Move the defl ection yoke backward, and adjust with the purity
control so that green is in the center and red and blue are even on
both sides.
KV-29FS150

SECTION 2: SET-UP ADJUSTMENTS

Align the edge of
the VM coil with
the edge of the G3 grid.
G3 G4
Blue
Red
Green
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. Move the defl ection yoke forward, and adjust so that the entire
screen becomes green.
7. Switch over the raster signal to red, then blue and confi rm the
condition.
8. When the position of the defl ection yoke is determined, tighten it
with the defl ection yoke mounting screw.
9. If landing at the corner is not right, adjust by using the disk
magnets.
Purity control
corrects this area.
a
b
d
c
Deflection yoke positioning
corrects these areas.
a
d
KV-29FS150
5. Oscilloscope
6. Landing Checker
7. XCV Adjuster
Disc magnets or rotatable
disc magnets correct these
areas (a-d).
b
c
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