3-5. DEFLECTION YOKE TILT ADJUSTMENT

1.Set to receive the Monoscope signal.

2.Set in service mode.

3.Use VP on the service mode menu to show only the green color.

4.Loosen the deflection yoke set screw and align the tilt of the Deflection Yoke so that the bars at the center of the monoscope pattern are horizontal.

5.After aligning the deflection yoke, fasten it securely to the funnel-shaped portion (neck) of the CRT.

6.The tilt of the deflection yoke for red is aligned with RG-RH on the service mode menu, and the tilt on the deflection yoke for biue is aligned with RG-BH on the service menu, is aligned the same as was done for green.

 

4-pole magnet

2-pole magnet

Deflection yoke

Neck Assy

Anode cap

Fig. 3-6

3-6. 2-POLE MAGNET ADJUSTMENT

1.Set in service mode.

2.Set to receive the Dot signal.

3.Place the caps on the red and blue lens so that only the green color is shown.

4.Turn the green VR on the focus block to the right and set to overfocus to enlarge the spot.

5.Now align the 2-Pole Magnet so that the enlarged spot is in the center of the Just Focus spot.

6.Align the green focus VR and set for just (precise) focus.

7.Perform the same alignment for red and blue.

Use the center dot

Fig. 3-7

3-7. 4-POLE MAGNET ADJUSTMENT

1.Set in service mode.

2.Set to receive the Dot signal.

3.Remove CN302 connector for A board

4.Place the caps on the red and blue lens so that only the green color is shown.

5.Turn the green VR on the focus block to the left and set to underfocus to enlarge the spot.

6.Now align the 4-Pole Magnet so that the enlarged spot be- comes a perfect circle.

7.Perform the same alignment for red and blue.

Use the center dot

 

x

/

y

 

x : y = 1:1

Fig. 3-8

3-8. DEFOCUS ADJUSTMENT (Blue)

1.Receive the crosshatch signal

2.Adjust the FOCUS knob so that the crosshatch pattern verti- cal line width is as in the figure on the right.

3.Blue only defocus Adjustment.

[Focus adjustment point]

41” : 9–11mm

53” : 13–16mm

61” : 13–16mm

Fig. 3-9

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Sony KP-41T65C service manual Deflection Yoke Tilt Adjustment, Pole Magnet Adjustment, Defocus Adjustment Blue