Card
Readers
CARD READERS - GENERAL HINTS
1.
A common cause
of
read checks
is
off·punched or worn cards.
2. Use a card gauge
to
determine off punching.
3. A validity check usually indicates a double punch
in
rows
1-7
of
the card.
4. When bringing
new
cards into
the
computer room from a different environ-
ment
(heat, humidityl, do
not
use them for
the
first 12 hours.
5. Cards
do
\Near
out. Reproduce master decks when you notice excessive
marking
or
~oring
on
the
edges.
6. Some common sense messages
that
may type
out
on the console are:
Page
5·10
Intervantion Required - Operator attention
is
needed
to
empty
the
stacker, fill
the
hopper, press
END
OF FILE, clear the transport, close a
cover, or restore ready status. This indication also accompanies a read
station failure
that
occurs during reading.
Equipment Check - Indicates
that
the two readings
of
a column did
not
agree. Also indicates
that
the read station failed before reading
begins.
Data
Check
- Indicates
that
the machine has detected an invalid card
column (more than one punch
in
rows 1-71
in
data mode
1.
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