Set-Up Adjustments; Beam Landing; Convergence - Sony KV-21FE13 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:
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 defl ection 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 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.
5. Move the defl ection yoke forward, and adjust so that the entire screen
becomes green.
SECTION 2: SET-UP ADJUSTMENTS
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. Switch over the raster signal to red and blue and confi rm the
condition.
7. When the position of the defl ection yoke is determined, tighten it with
the defl ection 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)
Deflection yoke positioning
b
d
— 10 —
KV-21FE13 / 21FE13C / 21FM13 / 21FM13C
Purity control
corrects this area
a b
c d
corrects these areas
a
c