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IBM PCjr

IBM PCjr
292 pages
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3
4
Turn
yoxxr
IBM
PC/r
power
off.
Turn
the
Brightness
and
Contrast
controls fully clockwise.
Turn
the
Vertical
Size
control
knob
fully counterclockwise. A
black
area
should
appear
across
the
top
and
the
bottom
of
the
screen.
Vertical
Size
Control
6-70
IBM
Color
Display
Check
Out
Procedure

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