ELECTRICAL ADJUSTMENTS
3.PURITY AND CONVERGENCE3-3: STATIC CONVERGENCE
ADJUSTMENTSNOTE
Adjust after performing adjustments in section 3-2.
NOTE
1.Receive the crosshatch pattern from the color bar
1.Turn the unit on and let it warm up for at least 30
generator.
minutes before performing the following adjustments.
2.Combine red and blue of the 3 color crosshatch pattern
2.Place the CRT surface facing east or west to reduce the
on the center of the screen by adjusting the pair of
terrestrial magnetism.
4 pole magnets.
3.Turn ON the unit and demagnetize with a Degauss Coil.
3.Combine red/blue (magenta) and green by adjusting the
3-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT)pair of 6 pole magnets.
1.Tighten the screw for the magnet. Refer to the adjusted3-4: DYNAMIC CONVERGENCE
CRT for the position. (Refer to Fig. 3-1)
NOTE
If the deflection yoke and magnet are in one body,
untighten the screw for the body.Adjust after performing adjustments in section 3-3.
2.Receive the green raster pattern from the color bar
1.Adjust the differences around the screen by moving
generator.
the deflection yoke upward/downward and right/left.
3.Slide the deflection yoke until it touches the funnel
(Refer to Fig. 3-2-a)
side of the CRT.
2.Insert three wedges between the deflection yoke and
4.Adjust center of screen to green, with red and blue on the
CRT funnel to fix the deflection yoke.
sides, using the pair of purity magnets.
(Refer to Fig. 3-2-b)
5.Switch the color bar generator from the green raster
pattern to the crosshatch pattern.
R G B
R G B
6.Combine red and blue of the 3 color crosshatch pattern
on the center of the screen by adjusting the pair of
4 pole magnets.
R
7.Combine red/blue (magenta) and green by adjusting the
G
pair of 6 pole magnets.
B
8.Adjust the crosshatch pattern to change to whiteR
G
by repeating steps 6 and 7.
B
3-2: PURITY
UPWARD/DOWNWARD SLANT RIGHT/LEFT SLANT
NOTE
Fig. 3-2-a
Adjust after performing adjustments in section 3-1.
1.Receive the green raster pattern from color bar
generator.
2.Adjust the pair of 2-Y pole magnets so the magnets is at
just down position.
3.Adjust the pair of 2-X pole magnets to center the
WEDGE
color on the screen.WEDGE
Adjust the pair of 2-X pole magnets so the color at the
ends are equally wide.
4.Move the deflection yoke backward (to neck side)
slowly, and stop it at the position when the whole
screen is green.
WEDGE
5.Confirm red and blue colors.
6.Adjust the slant of the deflection yoke while watching the
WEDGE POSITION
screen, then tighten the fixing screw.
Fig. 3-2-b
DEFLECTION YOKE
DEFLECTION YOKE SCREW
6 POLE MAGNETS
4 POLE MAGNETS
2-Y POLE MAGNETS
2-X POLE MAGNETS
Fig. 3-1 |
ACEC
