TOSHIBA DW56X91
Manual de Servicio

WARNING : BEFORE SERVICING THIS CHASSIS, READ THE �X-RAY RADIATION PRECAUTION�, �SAFETY PRECAUTION� AND �PRODUCT SAFETY NOTICE� ON PAGE 3 OF THIS MANUAL.

PICTURE TUBE COMPONENTS ADJUSTMENT
DESCRIPTION OF NECK COMPONENTS
Pole 2 magnet Pole 4, 6 magnet

Deflection yoke and convergence yoke The position on the neck is required most front (CRT funnel side) and the screw is fastened after rotating yoke adjusting picture tilt. Centering magnet After adjusting picture tilt, picture position is finally fixed by this magnet. In order to get maximum margin of user convergence control for center of screen, this magnet have to be used for center convergence adjustment. PREPARATION Operate the receiver for at least 5 minutes. R, G, B CUTOFF (SCREEN VR) ADJUSTMENT 1. Adjust before replacing the SCREEN assembly. 2. Press RESET button on TV or remote hand set. 3. Call up the adjustment mode display, then adjust the data of items RCUT, GCUT and BCUT to �40�. 4. Press TV (ANT)/VIDEO button on TV. 5. Gradually rotate R, G and B SCREEN volume of FOCUS PAC (page 8) 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.) 6. Press TV (ANT)/VIDEO button on TV again. RGB ALIGNMENT & ASTIGMATISM ADJUSTMENT 1. Set the knobs of the pole 2, 4, 6 magnets of the SVM coil so that their magnetic fields override each other.
Pole 6 Pole 4

SPECIFIC INFORMATIONS GENERAL ADJUSTMENTS

2. Enter the adjustment mode (see page 11). 3. Adjust the centering magnets for the RED, GREEN, and BLUE colors. (See CENTERING ADJUSTMENT.) 4. Press the TV/VIDEO button on the remote controller to display the internally-generated white cross dots. (White cross dots on black background. Refer to TEST SIGNAL SELECTION on page 12.) 5. Adjust the alignment and astigmatism of the projection tube for RED. (See steps (1) to (6) below. Cover the projection tubes for the other two colors with lens caps, etc.) (1) Slightly turn the focus VR of RED to the left. (2) Adjust the pole 2 magnet so that the bright section of the dot falls on the center of the dark section (flare).
Dark section (flare)

Bright section

(3) Readjust the centering magnets for the RED colors. (4) Slightly turn the focus VR of RED to the right for the sharp focus. (5) Adjust the pole 4 magnet to the desired degree so that the blurred dot becomes rectangular. (The shape should become basically same when turning the focus VR to both the left and right.)

Pole 2

�6�