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Quick Reference Guide
Troubleshooting
Problem
The omni-line scan
pattern does not
display when you
follow the directions for
installing the host
cable.
Scan line(s) display,
but bar code cannot be
read.
Bar code is decoded,
but not transmitted to
the host.
Possible Causes
No power to the
scanner.
Interface cable is not
properly connected.
Scanner is not
programmed to read
the bar code type.
Bar code is damaged.
Bar code is too far from
scanner.
The host has disabled
scanning or overridden
parameter settings.
Scanner is not
programmed for the
correct host type.
Possible Solutions
Ensure the host has power,
and is on. If the scanner uses
a separate power supply,
ensure it's connected to a
working AC outlet.
Power-up sequence is
incorrect. Refer to the LS7808
Product Reference Guide for
more information.
Check for loose cable
connections.
Ensure scanner is
programmed to read the bar
code type you are scanning.
Try scanning other bar codes
of the same bar code type.
Move the bar code closer to
the scanner.
See the technical person in
charge of scanning.
Scan the appropriate host
type bar code.
11
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