Vertical Alignment - Control Data Corporation CDC CC63X Hardware Maintenance Manual

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3. Adjust G2 control un-til scan lines disappear.
4. Turn CONT control fully clockwise; then reduce (turn CONT
conirol counterclockwise) brightness until area between
dots (background) becomes dark.
5. Adjust BRIGHTNESS and CONTRAST (front panel) controls for
most eye pleasing display.
6. Adjust FOCUS control for best resolution in center of
display.
7. Adjust DYN control for best resolution on edges of
display.
NOTE
After completing steps 6 and 7, all
test characters should appear sharp
and clear.
Vertical Alignment:
1. Fill the screen with His as follows:
(
a. Pullout TEST switch.
b. Press RESET.
c. After test 1 complete, push TEST switch in.
d. Press Fl key. (If access code is asked for after
pressing Fl, enter it.)
e. Press SETUP key.
f. Check second box from left.
If OFF LINE - go to next step. Otherwise, press F2
key to obtain OFF LINE indication (F2 key may have
to be pressed several times to step through HANGUP,
ANSWER, DIAL, and ON if terminal has enhanced
firmware and an internal modern).
g. Press FlO key (more parameters).
h. Check seventh box from left.
62940034 E
If 132 character/line - press F7 key.
If 80 character/line - go to next step.
6B-3l