Toshiba 36A43 Service Manual page 11

ITEM
HORIZONTAL POSITION
(HPOS)
VERTICAL POSITION
(VPOS)
HEIGHT
(HIT)
WHITE BALANCE
(RCUT)
(GCUT)
(BCUT)
(GDRV)
(BDRV)
MTS ADJUSTMENT
No. ITEM
ATTENUATOR
1
(ATT)
STEREO SEPARATION
2
(WBAN)
(SPEC)
ADJUSTMENT PROCEDURE
1. Call up the adjustment mode display, then select the item HPOS or VPOS.
2. Press the TV/VIDEO button on Remote until the
white cross-bar or black cross-bar pattern appears
on the screen.
3. Adjust the HORIZONTAL and VERTICAL position
alternately by pressing the VOLUME s or t but-
ton for proper picture position.
4. Check the picture with off-air signal.
1. Call up the adjustment mode display, then select the item HIT.
2. Press the VOLUME s or t button to get the picture so the top of raster begins to
lack.
3. Press the VOLUME s button to advance the data by 9 steps.
Note : Check the vertical picture position is correct.
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 on Remote
until the white and black pattern appears on the screen.
3. Adjust the following items with the CHANNEL s/t and VOLUME s/t buttons.
Item : RCUT
Data : 40H
Item : GCUT
Data : 40H
Item : BCUT
Data : 40H
4. Press the TV/VIDEO button on TV to display a single horizontal line on the screen.
5. Turn the SCREEN control (FBT) fully counterclockwise and gradually rotate clock-
wise until the first horizontal line appears slightly on the screen.
6. Press the TV/VIDEO button to display the normal picture.
7. Adjust the remaining two "?CUT" items (CHANNEL s/t → TV/VIDEO → VOL-
UME 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.
INPUT SIGNAL
• 1kHz 30% mod. → ANT
terminal
• STEREO 300Hz (30% mod.)
R-channel only → ANT
• STEREO 3kHz (30% mod.)
R-channel only → ANT
– 11 –
Item :
GDRV
Item :
BDRV
Bright area
Adjust "GDRV" or "BDRV" to be white.
Dark area
Fine adjust "RCUT", "GCUT" or "BCUT" to be black.
ADJUSTMENT PROCEDURE
1. Display item ATT on screen.
2. Connect a millivolt meter to TV OUT L of
Monitor output terminal to observe the
voltage.
3. Change data by VOLUME s/t buttons so
that the reading of meter becomes value
as close as 150mVrms.
1. Display item WBAN on screen.
2. Observe the waveform of TV OUT L of
Monitor output terminal by an oscilloscope.
3. Change data by VOLUME s/t buttons so
that 300Hz element on scope becomes
minimum.
1. Display item SPEC on screen.
2. Observe the waveform of TV OUT L of
Monitor output terminal by an oscilloscope.
3. Change data by VOLUME s/t buttons so
that 3KHz element on scope becomes
minimum.
Make the above adjustments so that the
separation becomes optimum.
Data : 40H
Data : 40H