
 25
TROUBLESHOOTING GUIDE 
Symptoms  Possible Cause(s)  Solution 
All Interfaces 
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. 
RS232 Only 
The com port at the 
host is not working or 
is not configured 
properly. 
The cable is not 
connected to the 
proper com port. 
The unit powers 
up OK and 
scans OK but 
does not 
communicate 
properly to the 
host. 
The com port is not 
operating properly. 
Check to make sure that the 
baud rate and parity of the 
scanner and the communication 
port match and that the program 
is looking for RS232 data.