Mechanical Tilt - Toshiba TW40F80 Quick Reference Manual

4. Select the WIDE 1 picture size with the
PIC SIZE key on the TW40F80 and TW56F80.
5. Push the 100 key to turn off the red
tube, and the RTN key to turn off the blue
tube.
6. Move around to the rear of the set.
Loosen the wing nut on the green lens. Ro-
tate the lens while looking up at the back of
the screen at the reflected image. Adjust the
lens for the best focus in the center area of
the screen. It helps to have the room dark. If
the room is not dark enough, place the
speaker grill, or a similar dark object, in front
of the screen.
7. Move around to the front of the set and
adjust the electrical focus for best focus in the
center of the screen.
8. Repeat the optical focus, then tighten
the wing nut.
9. Repeat the electrical focus.
10. Push the 100 key to turn on the red
tube, and the 0 key to turn off the green tube.
11. Adjust the red optical and electrical
focus.
12. Push the RTN key to turn on the blue
tube, and the 100 key to turn off the red tube.
13. Adjust the blue optical and electrical
focus. However, defocus the blue slightly with
the electrical focus control to maintain uniform
brightness.
14. Select the FULL picture size with
the PIC SIZE key on the TW40F80 and
TW56F80.
15. Push the 7 key two times to exit the
convergence mode and call up the built in test
patterns. There should be no connection to
the Video 1 Input.

3. Mechanical Tilt

Make sure there is no connection to
the VIDEO 1 input.
1. With the set still in service adjust-
ment mode, push the TV / VIDEO key until the
white cross bar on black background test
pattern is displayed. Check each CRT's tilt. If
a CRT's cross bar pattern is tilted, loosen the
appropriate yoke with a non magnetic screw
driver and rotate the yoke until the cross bar
pattern is aligned vertically and horizontally.
On the TP50F50/51, the notches in the
screen bezel can be used as a guide.
For the TW40F80 and TW56F80, place
the FULL / WIDE 1 template on the screen
and use the FULL (solid lines) center cross
hairs as a guide.
2. Turn the power off to exit the service
mode.
7