TOSHIBA 50HX70
Service Manual

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 buttonto erase Blue color5. 5. Loosen the fasten screw and adjust Red lense 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. Select the adjustment mode. 3. Press TV/VIDEO button on the Remote Control to display the white cross-bar.

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 13.) 9. Check whole quality of green line. 10. Adjust R, B centering magnet so that the cross-bar pattern center comes to screen center.

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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.