Sony KV-27V40 service manual Convergence, Stat magnet, BMC magnet

KV-27V40 / 27V45 / 27V65 / 29VL40 / 29VL65A / 29VL65C / 29VL85 / 29VL95

3-2. CONVERGENCE

Preparation:

•Before starting, perform FOCUS, V. LIN and V. SIZE adjustments.

•Set BRIGHTNESS control to minimum.

•Feed in dot pattern.

(1)Vertical Static Convergence

V. STAT magnet

Fig. 5

1.Adjust V. STAT magnet to converge red, green and blue dots in the center of the screen. (Vertical movement)

Tilt the V. STAT magnet and adjust static convergence to open or close the V. STAT magnet.

2.When the V. STAT magnet is moved in the direction of arrow a and b, red, green, and blue dots move as shown below:

If the blue dot does not converge with red and green dots, perform the following steps:

•Move BMC magnet (a) to correct insufficient H. Static convergence.

•Rotate BMC magnet (b) to correct insufficient V. Static convergence.

In either case, repeat Beam Landing Adjustment.

BMC magnet

Fig. 6

Fig. 7

( 2 ) Dynamic Convergence Adjustment

Preparation:

•Before starting, perform Horizontal and Vertical Static Convergence Adjustment.

1.Slightly loosen deflection yoke screw.

2.Remove deflection yoke spacers.

3.Move the deflection yoke for best convergence as shown below. ( Fig. 8)

4.Tighten the deflection yoke screw.

5.Install the deflection yoke spacers.

Fig. 8

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