Toshiba 19A20 Manual de servicio - Página 13

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1. Circuit Block Diagram

ITEM

WHITE BALANCE

RCUT

GCUT

BCUT

GDRV

BDRV

ADJUSTMENT PROCEDURE

1. Adjust the CONTRAST control to the center, and BRIGHTNESS control to the

maximum.

2. Call up the adjustment mode display, and press the TV/VIDEO button until the

white and black pattern appears on the screen.

3. Adjust the following address with the CHANNEL s/t and VOLUME s/t

buttons.

Item :

RCUT

Data : 30H

Item :

GCUT

Data : 30H

Item :

BCUT

Data : 30H

4. Press "100" button on the Remote Control to display a single horizontal line on

the screen.

5. Turn the SCREEN control (FBT) fully counterclockwise and gradually rotate

clockwise until the first horizontal line appears slightly on the screen.

6. Press "100" button to display the normal picture.

7. Adjust the remaining two "?CUT" Item (CHANNEL s/t → 100 → VOLUME s/t

in order) to obtain the slightly lighted horizontal line in the same levels of three

(red, green, blue) colors. The line should be white if the adjustments are proper.

– 13 –

Item :

GDRV

Item :

BDRV

Bright area

Adjust "GDRV" or "BDRV" to be white.

Dark area

Fine adjust "RCUT", "GCUT" or "BCUT" to be black.

Data : 80H