Toshiba 19A10 Servis Kılavuzu - Sayfa 13

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ITEM

FOCUS VR ADJ

SUB-BRIGHTNESS

(BRTC)

SUB-COLOR

(COLC)

SUB-TINT

(TNTC)

WIDTH

(WID)

ELECTRICAL ADJUSTMENTS

ADJUSTMENT PROCEDURE

1. Enter the service mode, then select any register item.

2. Press the TV/VIDEO button on the Remote until the black cross-bar pattern ap-

pears on the screen.

3. Adjust the FOCUS control (on T461) for well defined scanning lines on the picture

screen.

1. Constrict the picture height until the

vertical retrace line appears adjusting

the HEIGHT control on the MAIN board.

2. Adjust the CONTRAST to the minimum

and BRIGHTNESS to the center.

3. Enter the service mode, then select

"BRTC" register.

4. Adjust the data value so the belt of

vertical retrace line just disappear.

5. Adjust the CONTRAST for the desired

contrast.

6. Adjust the HEIGHT control.

1. Receive color-bar signal from color-bar generator.

2. Press the RESET button.

3. Connect oscilloscope to base of Q903 on CRT-D board.

4. Enter the service mode, then select "COLC".

5. Adjust the SUB-COLOR by pressing the

VOLUME s or t button to achieve about

of blue bar.

0-p

6. Select "TNTC" register.

7. Adjust the data value to obtain the blue

bar to magenta bar ratio of 3:2 as shown.

8. Select "COLC" register.

9. Adjust the data value to achieve 1.8

of blue bar on scope.

10. Check the picture with off-air signal.

1. Call up the adjustment mode display, then select the item WID.

2. Press the VOLUME s or t button to get the picture so the left and right edges of

raster begins to lack.

3. Press the VOLUME s or t button to advance the data by 7 steps.

Note : Check the horizontal picture position is correct.

– 12 –

Vertical retrace line

Blue

Magenta

0-p

3 (1.8V

)

0-P