59
nlscan.com
Troubleshooting
Problem
Possible causes
Possible solutions
Nothing happens when you
follow the operating
instructions, or the scanner
displays erratic behavior.
No power to the
scanner.
Check the system power. Ensure the power
supply is connected.
Incorrect cables.
Use the original cables.
Connections are
loose.
Check for loose cable connections.
LEDs comes on, but the
scanner does not decode.
Bar code symbol is
unreadable.
Check the symbol to make sure it is not
defaced. Try scanning test symbols of the
same bar code type.
Scanner is not
programmed for the
correct bar code
type.
Be sure the scanner is programmed to read
the type of bar code you are scanning.
Distance between
scanner and bar
code is incorrect.
Move the scanner closer to or further from the
bar code.
Scanned data is incorrectly
displayed on the host.
Scanner is not
programmed to work
with the host. Check
scanner host type
parameters or editing
options.
Be sure proper host is selected.
For RS-232, ensure the scanner’s
communication parameters match the host’s
settings.
Other circumstances.
Contact your distributor or the manufactory
support centre.
