KP-FR53M96 - Sony TV Service Manual (repair manual). Page 11

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1. Receive the Monoscope signal.
2. Set 50% BRIGHTNESS and minimum PICTURE.
3. Turn the red VR on the focus pack 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.

1. Turn on the power of the set.
2. Select VIDEO1 and make no signal input.
3. Supply DC (177.5 0.5V) from external power supply to

KR. (Fig. 3-2)

4. Turn red of G2 VR clockwise, then retrace line appear.
5. Turn G2 VR counter clockwise and set retrace line just

disappear. (Fig. 3-3)

6. Add DC voltage DC (174 0.5V) to KR.
7. Confirm if retrace can be seen.
8. Adjust green and blue at the same method.

B

R

G

B

R

G

SCREEN

FOCUS

Focus Pack

+

–

Dummy Resister

3k ohm 20W

Power

Supply

Test signal

This adjustment item must be ending the G2 adjustment.

1. Input the HD (1080i/60Hz Black) signal into component

in terminal.

2. Set PICTURE 100%, others are normal,

DRC 1250/60Hz.

3. Adjust with SLN so that the blue reference pulse peak

voltage of B terminal (CN1504) enters into standard.

4. Write the adjustment value in the NVM area of

widezoom mode after the adjustment.

1. Connect VIDEO-1 terminal.
2. Receive video dot hatch pattern.
3. Use lens-cover to red and blue.
4. Adjust electric focus. (roughly)
5. Rotate the green lens and adjust to obtain the best lens

focus.

6. Rotate the green focus volume on the focus pack and

adjust to obtain best electrical focus.

7. If focus is not good, repeat 4 process.
8. Repeat above process for red and blue lenses and

electric focus.

9. Fix lens screw.

V

0.05V

2.15

GND (0V)

BLUE REFERENCE PULSE

(UG board CN1504 B5 B)

Item: DE F2 03 SLN

Lens

A

B

Minimize both A and B.

Scanning line visible.