Toshiba 14C3E1 Service Manual page 11

ITEM
WHITE BALANCE
ADJUSTMENT
• CUTOFF ADJUSTMENT
(RCUT)
(GCUT)
(BCUT)
• DRIVE ADJUSTMENT
(GDRV)
(BDRV)
NOTE: It is released built-in test pattern by changing the adjustment item for some model.
In this case, select the adjustment item with CH s/t button first and then select the built-in test pattern with
button.
ADJUSTMENT PROCEDURE
1. Set Contrast to 40, and brightness to +20 by picture control.
2. Set the TV in service mode, and get the inside W/B adjusting signal with a button.
3. Select RCUT, GCUT and BCUT with CH s/t buttons, to set individual values to
Initial reference data, and to set GDRV and BDRV to Initial reference data with
; – /+ buttons.
4. Press button on the remote control and rotate Screen VR to get one slight
horizontal line on screen.
Note: Every pressing of
picture alternately.
5. Press button to release horizontal line picture, and select the two other colors
which did not light in the above step with CH s/t buttons. Then tap ; – /+ buttons
so that three colors slightly light in the same level.
X To correct white balance in light area,
select GDRV and BDRV with CH s/t
buttons to adjust.
X To correct white balance in dark area,
perform fine adjustment of RCUT, GCUT
and BCUT.
– 11 –
button provides Horizontal line picture and Normal
Light area check
(to show white)
Dark area check
(to show black)