Toshiba 24W33B, Service Manual

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In order to enter the geometry menu, press the green button on the remote control :
REGISTER PARAMETER NOTE
VSIZ Vertical Size ADJUST VERTICAL SIZE (50 HZ)
VPOS Vertical Position ADJUST VERTICAL POSITION (50 HZ)
VSCO Vertical S Correction. ADJUST VERTICAL S CORRECTION (50HZ)
VCCO Vertical C Correction. ADJUST VERTICAL C CORRECTION (50HZ)
HSIZ Horizontal Size ADJUST HORIZANTAL SIZE (50 HZ)
HPOS Horizontal Position. ADJUST HORIZANTAL POSITION (50 HZ)
HPCO Horizontal Pincushion Correction for ADJUST HORIZANTAL PINCUSHION CORRECTION (50 HZ)
HCCO Horizontal Corner Correction. ADJUST HORIZANTAL CORNER CORRECTION (50HZ)
HTCO Horizontal Trap Correction. ADJUST HORIZANTAL TRAP CORRECTION (50HZ)
VZSZ Zoom Vertical Size. ADJUST VERTICAL SIZE FOR ZOOM MODE (50HZ)
USING REMOTE CONTROL BUTTONS
RED BUTTON (For Stereo models only): It switches the AVL to ON or OFF mode on service menu.
AVL word is visible on service menu when AVL is on.
GREEN BUTTON : It is used to enter the geometry menu.
YELLOW BUTTON : It switches to VERTICAL SCAN DISABLE mode on service menu. It is usefull to adjust screen
voltage. It is also used as Program Down button on geometry menu.
BLUE BUTTON : It is used to adjust AGC and IF automatically on service menu.It is also used as Program Up button
on geometry menu.
TTX UPDATE BUTTON : It is used to change the picture mode on geometry menu.
WHITE BALANCE ADJUSTMENT
The following three parameters are used to make white balance adjustment. To do this, use a Colour Analyser. Using
WR (White point adjust for RED), WG (White point adjust for GREEN), WB (White point adjust for BLUE) parameters,
insert the + sign in the square which is in the middle of the screen.
The suggested values for these parameters are given on the table above.
AGC ADJUSTMENT
In order to do AGC adjustment, enter a 60dBmV RF signal level from channel C-12 (224.25 MHz)
Select AGC parameter from service menu. Press BLUE (INSTALL) button from remote controller. The adjustment will be
done automatically by software. See the AGC indicator on service menu, it must be 1. Check that picture is normal at
90dBmV signal level.
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IF NEGATIVE ADJUSTMENT (WITHOUT L’ SYSTEMS)
Set the video pattern to a PAL colour bar pattern with frequency 38.9 MHz . Apply this IF signal to PIN-10 and PIN-11
of tuner. Press PROG-1 and after that BLUE (INSTALL)button from remote controller. Select the standart as BG or I .
(if BG is not available) Enter service menu. Select IF1 parameter from service menu and press BLUE (INSTALL) button
from remote controller. IF adjustment will be done automatically by software. See the IF indicator on service menu, it
must be like on FIGURE-1 shown above.
IF POSITIVE ADJUSTMENT (WITH L’ SYSTEMS)
Set the video pattern to a SECAM-L colour bar pattern with frequency 33.9 MHz . Apply this IF signal to PIN-10 and
PIN-11 of tuner. Press PROG-1 and after that BLUE (INSTALL)button from remote controller. Select the BAND VHF-1
(S1 – S4 for PLL tuners) and standard as L’ . Enter service menu. Select IF1 parameter from service menu and press
BLUE (INSTALL) button from remote controller. IF adjustment will be done automatically by software. See the IF indicator
on service menu, it must be like on FIGURE-1 shown above.