Toshiba 32HFX72 Convergence Adjustments Center Convergence Adjustment, Blu Red Red/Blue Grn

CONVERGENCE ADJUSTMENTS

NOTE: Before attempting any convergence adjustments, the receiver should be operated for at least fifteen minutes.

■CENTER CONVERGENCE ADJUSTMENT

1.Display built-in cross-dot pattern using the TEST SIG- NAL SELECTION function.

2.Adjust the BRIGHTNESS and CONTRAST Controls for well defined pattern.

3.Loosen the tightening ring and adjust two tabs of the 4-Pole Magnets to change the angle between them (See figure 4.) and superimpose red and blue vertical lines in the center area of the picture screen.

(See figure 3.)

4.Turn the both tabs at the same time keeping the con- stant angle to superimpose red and blue horizontal lines at the centre of the screen. (See figure 3.)

5.Adjust two tabs of 6-Pole Magnets to superimpose red/ blue line with green one. Adjusting the angle affects the vertical lines and rotating both magnets affects the horizontal lines.

6.Repeat adjustments 3, 4, 5 keeping in mind red, green and blue movement, because 4-Pole Magnets and 6- Pole magnets interact and make dot movement com- plex.

7.After completing the “CENTER CONVERGENCE AD- JUSTMENT” tighten the tightening ring to fix the mag- nets.

4-POLE

MAGNETS

6-POLE MAGNETS

PURITY

MAGNETS

PURITY/CONVERGENCE

MAGNETS

ADJUST THE ANGLE

(VERTICAL LINES)

FIXED

ROTATE TWO TABS AT THE SAME TIME (HORIZONTAL LINES)

ADJUSTMENT OF MAGNETS

SPECIFIC INFORMATIONS GENERAL ADJUSTMENTS

BLU RED

BLU

RED

RED/BLUE GRN

RED/BLUE

GRN

Figure 4.

■SCREEN-CORNER CONVERGENCE

When the misconvergence is still evident on corners even though the above adjustment is done, use the ferrite sheet

4-POLE MAGNETS	6-POLE MAGNETS
MOVEMENT	MOVEMENT

Center Convergence by Convergence Magnets

Figure 3.

■Xv COIL ADJUSTMENT

Adjust the Xv coil (on the deflection yoke) to correct misconvergence at both sides on screen.

Use a hexagonal tip stick (plastic) to adjust the core of coil.

(Part No. 23993622) to correct misconvergence.

1.Put ferrite sheets into the space under the yoke. Decide such position that misconvergence becomes minimum, watching picture screen. (See figure below.)

2.Remove cover paper of ferrite sheet to stick it in the place on the tube. Put adhesive tapes on ferrite sheets to fix.

ClockwiseAdjustment Counterclockwiserclockwise Adjustmentent

RB

BR

BR

RB

Ferrite	Ferrite
Sheets	Sheets

A

For correcting misconvergence on the position A

XvV Crross Pattern View

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