Metrologic Instruments MS9590 Manuel D’Utilisation

 

 

28 

T

ROUBLESHOOTING 

G

UIDE

 

The unit powers 
up, but does not 
scan and/or 
beep. 

The bar code being 
scanned does not 
satisfy the configured 
criteria for character 
length lock or minimum 
length.   

Verify that the bar code being 
scanned falls into the configured 
criteria. 
 
The scanner defaults to a minimum 
of 3 character bar code. 

The following item is only relevant for RS232 and Serial Emulation USB interfaces. 

The unit scans a 
bar code, but 
locks up after the 
first scan and the 
white 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 set correctly. 

Make sure the scanner is configured 
for the appropriate mode.