Toshiba 51HX93, Руководство по обслуживанию

Страница: 12 / 65

– 12 –
GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
VERTICAL LINEARITY
(VLIN)
(FULL mode only) 1. Receive cross-hatch pattern.
2. Call up the adjustment mode display, then select the item
VLIN .
3. Press the VOLUME
s
or
t
button to obtain the
picture of the best linearity.
4. Then readjust the item HIT.
HEIGHT
(HIT) 1. Receive NTSC signal.
2. Select the "FULL" mode by PIC SIZE button on Remote Control.
3. Call up the adjustment mode display and select the item HIT.
4. Press the VOLUME
s
or
t
button to get the picture so that top and bottom of video signal
begin to lack.
5. Press the VOLUME
s
button to advance the data by 8 steps.
Note: Check the vertical picture position is correct.
Adjust the data of height after vertical linearty.
WHITE BALANCE
(RCUT)
(GCUT)
(BCUT)
(RDRV)
(BDRV) 1. Press RESET button on TV or remote hand set.
2. Call up the adjustment mode display, then adjust the data of items
RCUT , GCUT and BCUT
to “80”.
3. Press TV (ANT)/VIDEO button on TV.
4. Gradually rotate R, G and B SCREEN volume of FOCUS PAC (page 9) clockwise or
counterclockwise until the raster appears slightly on the CRT through the each lens, and
leave them.
(Look into the lens in order to check the raster.)
5. Press TV (ANT)/VIDEO button on TV again.
6. Exit from service mode.
7. Receive white laster pattern signal, and adjust the contrast to the minimum to make white
picture to low light.
8. Adjust the data of items RCUT , GCUT and BCUT for low light area.
9. Adjust the contrast to the maximum to make white picture to high light.
10. Adjust the data of items RDRV and BDRV Controls for proper white-balanced picture in high
light area.
11. Check the white balance in both low and high light areas. If necessary, perform again steps
from 7 to 9.
SUB-BRIGHTNESS
(BRTC)
WIDTH
(WID)
1. Receive the air signal or aux Video signal.
2. Enter sports mode on user menu.
3. Enter the service mode, then select “
BRTC ” register.
4. Adjust the data to set dark area of picture to proper level.
1. Receive NTSC signal.
2. Select the "FULL" mode by PIC SIZE button on Remote Control.
3. Call up the adjustment mode display, then select the item WID.
4. Press the VOLUME
s
or
t
button to get the picture so that left and right eddes of video
signal begin to lack.
5. Press the VOLUME
s
button to advance the data by 8 steps.
NOTE: Check the horizontal picture position is correct.
ELECTRICAL ADJUSTMENT
ITEM ADJUSTMENT PROCEDURE
VERTICAL POSITION
(VPSI) 1. Receive NTSC signal.
2. Connect he probe of digital voltmeter to TP-V and TP-G on SIGNAL Board.
3. Call up the adjustment mode display, then select the item VCEN.
4. Press the VOLUME
s
or
t
button to get the voltage 0
±
10 mV.