Metrologic Instruments MS3780 - Manual (Page 28)

24
T ROUBLESHOOTING G UIDE
Symptoms Possible Cause(s) Solution
All Interfaces
The unit 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 unit 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 the format
required by the host.
Make sure that the scanner 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.
The type of printer and/or the
printer settings could be the
problem.
Check the print mode or change
the printer settings. For
example, change to econo mode
or high speed.
The bar code may
have been printed
incorrectly.
Check if it is a check digit,
character or border problem.
The scanner is not
configured correctly
for the type of bar
code.
Check if check digits are set
properly.
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.