31
TROUBLESHOOTING GUIDE
Symptoms Possible Causes Solution
The scanner
scans a bar
code, but locks
up after the first
scan. The white
LED stays on.
The scanner is
configured to support
some form of host
handshaking but is
not receiving the
signal.
If the scanner is setup to support
ACK/NAK, RTS/CTS, XON/XOFF
or D/E, verify that the host cable
and host are supporting the
handshaking properly.
The scanner
scans, but the
data transmitted
to the host is
incorrect.
The scanner’s data
format does not
match the host
system requirements.
Verify that the scanner’s data
format matches that required by
the host. Most sure that the
scanner is connected to the
proper host port.
The scanner
beeps at some
bar codes and
NOT for others
of the same bar
code symbology.
The print quality of
the bar code is
suspect.
Check the print mode. The type of
printer could be the problem.
Change the print settings (i.e.
change to econo mode or high
speed).
The aspect ratio of
the bar code is out of
tolerance.
The bar code may
have been printed
incorrectly.
Check print mode. The type of
printer could be the problem.
Change print settings. i.e. change
to econo mode or high speed.
The scanner is not
configured correctly
for this type of bar
code.
Check if it is a check
digit/character/or border problem
in the configuration of the
scanner.
Scanner beeps
at some bar
codes and NOT
for others of the
same bar code
symbology
The minimum symbol
length setting does
not work with the bar
code.
Check if the correct minimum
symbol length is set.
Characters are
being dropped.
Inter-character delay
needs to be added to
the transmitted output
Add some inter-character delay to
the transmitted output