Sony KV-T29SN81 service manual Focus Adjustment, G2 Screen and White Balance Adjustments

Models: KV-T29SN81

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KV-T29SN81

RM-870

3-3. FOCUS ADJUSTMENT

Adjust FOCUS control on the flyback transformer for the best

focus.

Focus

Note: Screen VR is not use.

a. AN ITEM OF ADJUSTMENT

Item

Adjustment

Initial DATA

Note

number

item

 

 

09

RDR

25

WHITE POINT R

0A

GDR

20

WHITE POINT G

0B

BDR

20

WHITE POINT B

b.METHOD OF CANCELLATION FROM SERVICE MODE

Set the standby condition (Press [POWER] button on the commander) and then press [POWER] button again, hereupon it becomes TV

mode.

c. METHOD OF WRITE FOR MEMORY

1)Set to Service Mode.

2)Press 1(UP) and 4(DOWN) to select an item of adjustments.

3)Press [MUTING] button and it will indicate WRITE on screen.

4)Press - button to write into memory.

d. MEMORY WRITE CONFIRMATION METHOD

1)After adjustment, pull out the plug from AC outlet, and then plug into AC outlet again.

2)Turn the power switch ON and set to Service Mode.

3)Call the adjusted items again, confirm they were adjusted.

DATA

09 RDR 1 F SERVICE

Adjustment Item

Item number

09 RDR 1 F

WRITE

 

 

MUTING

 

0

Executes the writing

3-4. G2 (SCREEN) AND WHITE BALANCE

ADJUSTMENTS

1. G2 (SCREEN) ADJUSTMENT (RV701)

1)Set the PICTURE and BRIGHTNESS to normal.

2)Put to VIDEO input mode without signals.

3)Connect R, G, and B of the C board cathode to the oscilloscope.

4)Adjust G2 (RV701) volume to the value below.

180 V DC

0 V

2. WHITE BALANCE ADJUSTMENTS

1)Set the Service Mode.

2)Input an entire white signal.

3)Set the PICTURE to maximum.

4)Select RDR(09) with 1 and 4 , and then set the level to 25 with 3 and 6 .

5)

Select GDR(0A) and BDR(0B) with 1 and 4 and adjust

 

the level with 3 and 6 for the best white balance.

6)

Write into the memory by pressing [MUTING] → then - .

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Sony KV-T29SN81 service manual Focus Adjustment, G2 Screen and White Balance Adjustments