Sony KP-53SV70C, KP-61SV70C Section SET-UP Adjustments, Screen Voltage Adjustment Rough Alignment

KP-43T70C/53SV70C/61SV70C

RM-Y906 RM-Y906 RM-Y906

SECTION 3

SET-UP ADJUSTMENTS

3-1. SCREEN VOLTAGE ADJUSTMENT

(ROUGH ALIGNMENT)

1.Receive the Monoscope signal.

2.Set 50% BRIGHTNESS and minimum PICTURE.

3.Turn the red VR on the FOCUS block all the way to the left and then gradually turn it to the right until the point where you can see the retrace line.

4.Next gradually turn it to the left to the position where the retrace line disappears.

R G B

SCREEN

R G B

FOCUS

FOCUS block

Fig. 3-1

3-2. FOCUS LENS ADJUSTMENT

In this adjustment, use the remote commander in the service mode.

For details of the usage of the service mode and the remote commander, please refer the item 3-9. ELECTRICAL ADJUSTMENT BY REMOTE COMMANDER.

1.Loosen the lens screw.

2.Set to the service mode.

3.Change TV mode to the video input mode.

4.Set to PJE, and press 6 to display the test signal (crosshatch)“ on the screen.

5.Set VPNT 28 RON to “000”, 29 GON to “001” and 30 BON to “000” to show only the green color.

6.Turn the green lens to adjust to the optimum focus point with the test signal.

7.Tighten the lens screw.

8.Set VPNT 28 RON to “001”, 29 GON to “000” and 30 BON to “000” to show only the red color.

9.Adjust red CRT lens just the same as green.

Test signal

Fig. 3-2

10.Set VPNT 28 RON to “000”, 29 GON to “000” and 30 BON to “001” to show only the blue color.

11.Adjust blue CRT lens just the same as green.

*: Every time you press 6, the test signal changes to “crosshatch+video signal” - “dots+video signal” - “crosshach(black)” - “dots(black)” - off.

3-3. SCREEN (G2) ADJUSTMENT

1.Select VIDEO1 mode without signals.

2.Connect an oscilloscope to the TP701(KR), TP732(KG) and TP761(KB) of CR board, CG board and CB board.

3.Adjust R, G and B screen voltage to 170 – 173V with screen VR on the Focus block.

170 – 173V pedestal level

GND

Fig. 3-3

3-4. FOCUS VR ADJUSTMENT

1.Set to the service mode.

2.Change TV mode to the video input mode.

3.Set to PJE, and press 6 to display the test signal (crosshatch) on the screen.

4.Set VPNT 28 RON to “000”, 29 GON to “001” and 30 BON to “000” to show only the green color.

5.Turn the green VR on the focus block to adjust to the optimum focus point with the test signal.

6.Set VPNT 28 RON to “001”, 29 GON to “000” and 30 BON to “000” to show the red color.

7.Turn the red VR on the focus block to adjust to the optimum focus point with the test signal.

8.Set VPNT 28 RON to “000”, 29 GON to “000” and 30 BON to “001” to show the blue color.

9.Turn the blue VR on the focus block to adjust to the optimum focus point with the test signal.

Scanning line visible.

A

Minimize both A and B.

LensB

Center of crosshatch

Fig. 3-4 Fig. 3-5

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