TOSHIBA 50H82
Manual de Servicio

R, G, B FOCUS ADJUSTMENT 1. Before adjusting the R, G, B FOCUS, remove the 4 screws of Lens Assembly which is fixed on the CRT Assembly. (See page 4.) Then turn around the Lens Assembly by 180� to adjust the fastening screw (Fig. a) and fasten the 4 screws to secure Lens Assembly. 2. Select the adjustment mode. (See page 10.) 3. Press �7� button to display the built-in cross-hatch. 4. Press �0� and �RTN� buttons to make the picture a single Red color. 100 button ................ to erase Red color 0 button .................... to erase Green color RTN button .............. to erase Blue color. 5. Loosen the fasten screw and adjust Red lens focus to best focusing point of picture center. Then fasten the screw. (See Fig. a.)

TILT ADJUSTMENT Rotate R, G, B deflection yoke so that picture becomes horizon, then fasten screw. CENTERING ADJUSTMENT 1. Stretch a thread between two center of screen edge (top and bottom, left and right).

2. Receive NTSC. Then select SERVICE MODE. (See Page 10.) 3. Select CONVERGENCE ADJUSTING mode, and press "7" button to display the built-in cross-hatch pattern. Move Cursol and recognize horizontal line indicated Y:4. This line is vertical center. Push "9" button to display the vertical stripes, and recognaize horizontal center.

4. Perform VCEN adjustment. (See page 12.) 5. Adjust G centering magnet so that the cross-bar pattern center comes to screen center. 6. Perform HEIGHT adjustment . (See page 13.) 7. Perform VERT. LINEARITY adjustment. 8. Perform WIDTH adjustment. (See page 12.) 9. Check whole quality of green line. 10. Adjust R, B centering magnet so that the cross-bar pattern center comes to screen center.

�7�

SPECIFIC INFORMATIONS GENERAL ADJUSTMENTS

Fig. a 6. Adjust FOCUS VR �R� of FOCUS PACK to find best focusing point of picture center. 7. Repeat steps 3 to 5 for Green and Blue colors.