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23
TROUBLESHOOTING GUIDE
Symptoms Possible Causes Solution
The unit powers
up, but does not
scan and/or
beep.
The bar code being
scanned does not
satisfy the
programmed criteria
for character length
lock or minimum
length.
Verify that the bar code being
scanned falls into the
programmed criteria.
The scanner defaults to a
minimum of 3 character bar code.
The unit scans a
bar code, but
locks up after the
first scan and the
red* LED stays
on.
The unit is configured
to support some form
of host handshaking
but is not receiving
the signal.
If the unit 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 unit scans,
but the data
transmitted to the
host is incorrect.
The unit’s data format
does not match the
host system’s
requirements.
Verify that the unit’s data format
matches that required by the host.
Make sure that the unit is
connected to the proper host port.
The print quality of
the bar code is
suspect.
The aspect ratio of
the bar code is out of
tolerance.
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 bar code may
have been printed
incorrectly.
The unit is not
configured correctly
for the type of bar
code being scanned.
Check if it is a check
digit/character/or border problem.
The unit beeps
at some bar
codes but 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.
The unit scans
the bar code but
there is no data.
The unit’s
configuration is not
correct.
Make sure the scanner is
configured for the appropriate
mode.
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