
TROUBLESHOOTING 
Symptom  Possible Cause(s)  Solution 
All Interfaces 
Scanner beeps at some 
bar codes and NOT form 
others of the same bar 
code symbology. 
The print quality of the bar 
code is suspect. 
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. 
Check the character length 
lock. 
The aspect ratio of the bar 
code is out of tolerance. 
The unit powers up but 
does not scan and/or 
beep. 
The unit is trying to scan a 
particular symbology that is 
not enabled. 
UPC/EAN and Code 128 are enabled by default.  Verify that 
the type of bar code being read has been selected. 
The unit has been 
configured for a character 
length lock or a minimum 
length and the bar code 
being scanned does not 
satisfy the configured 
criteria. 
Verify that the bar code that is being scanned falls into the 
criteria. 
Typical of Non-UPC/EAN codes.  The scanner defaults to a 
minimum of 4 character bar code. 
The unit beeps at some 
bar codes but NOT for 
others of the same bar 
code symbology. 
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 this 
type of bar code. 
Check if check digits are set properly. 
The minimum symbol length 
setting does not work with 
the bar code. 
Check if the correct minimum symbol length is set. 
RS232 Only 
The unit powers up OK 
and scans OK but does 
not communicate properly 
to the host. 
The com port at the host is 
not working or is not 
configured properly. 
Check to make sure that the baud rate and parity of the 
scanner and the communication port match and the program is 
looking for RS232 data. 
The cable is not connected 
to the proper com port. 
The com port is not 
operating properly. 
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