JVC HV-29LPZ/HK PURITY, Convergence Adjustment, Purity Adjustment, Magnets, Purity Magnet

HV- 29LPZ

PURITY, CONVERGENCE ADJUSTMENT

PURITY ADJUSTMENT

1.	Demagnetize CRT with the demagnetizer.
2.	Loosen the retainer screw of the deflection yoke.

WEDGE

DYNAMIC CONVERGENCE ADJUSTMENT

3.	Remove the wedges.
4.	Input a green raster signal from the signal generator, and turn
	the screen to green raster.
5.	Move the deflection yoke backward.

CRT

DEF. YOKE

PURITY MAGNET(P)

4 6

CRT SOCKET PWB

P / C MAGNETS

6.	Bring the long lug of the purity magnets on the short lug and
	position them horizontally. (Fig.2)
7.	Adjust the gap between two lugs so that the GREEN RASTER
	will come into the center of the screen. (Fig.3)
8.	Move the deflection yoke forward, and fix the position of the
	deflection yoke so that the whole screen will become green.
9.	Insert the wedge to the top side of the deflection yoke so that it
	will not move.
10.	Input a crosshatch signal.
11.	Verify that the screen is horizontal.
12.	Input red and blue raster signals, and make sure that purity is
	properly adjusted.

P/C MAGNETS

P : PURITY MAGNET

4 : 4 POLES (convergence magnets)

6 : 6 POLES (convergence magnets)

Fig.1

PURITYMAGNETS

Short lug

Longugl

Bring the long lug over the short lug and position th em horizontally.

Fig.2

(FRONT VIEW) GREEN RASTER

CENTER

Fig.3

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