Press
the
following keys (sync test) and B g
~
(Enter).
You have placed
the
following signals
on
pin 8
(horizontal sync)
and
9 (vertical sync)
of
the
9 pin connector. 0
Pin 8 should measure between 1.5 and 2.5 Vdc. Pin 9 should
measure between
1.8 and 2.6 Vdc. Set
your
meter
on
the
12
volt DC scale and measure
the
voltage present
at
pin
8
and
pin 9.
o
1
....-----+2
3
4
5
o
WERE YOU ABLE TO READ BETWEEN 1.5 AND 2.5 Vdc
ON PIN 8 AND BETWEEN
1.8
AND
2.6 Vdc ON PIN 91
NO Replace
your
IBM
Monochrome Display and Parallel
Printer Adapter. See Section
3,
"Removal/Replacement."
~
YES Replace
your
display. See Section 3,
"Removal/Replacement. "
400-18
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