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INPUT HOPPER
(CARD FOLLOWER)
OPERATOR
PANEL
FRONT
- - - - - I...
COVER
Figure 3-8. Card Reader Assembly
o To prevent warping and buckling, cards
Card Jams
should be stored flat and in a relatively dry
A card jam occurs whenever (I ), a card has not
area.
moved through the read station and into the
output hopper or (2), a card is mispicked and
o The recommended storage environment is
does not completely advance from the input
70°F to 76°F with a relative humidity of
hopper into the read station. These conditions are
30% to 65%. Abrupt changes in relative
caused by a damaged and defective card. A card
humidity must be avoided to prevent card
that has been abused in handling and storage by
warping.
the operator.
If
a card jam is due to the inability of the
o To reduce the problem of nicked cards,
device to pick a card, see paragraph entitled, Card
never bundle them during storage. Cards
Mispicks. To remove a card jammed or lodged in
should be neatly stacked and stored in a
the read station:
dust-free container, preferably a card filing
drawer. Avoid the use of elastic bands.
I. Power-down the card reader according to
CARD READER DEVICES
3-10
AT04
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