
 31
TROUBLESHOOTING  
The following guide is for reference purposes only.  Contact a Metrologic representative at 1-800-ID-METRO or 
1-800-436-3876 to preserve the limited warranty terms. 
Symptom  Possible Cause(s)  Solution 
All Interfaces 
No LEDs, beep or motor 
spin. 
No power is being supplied to 
the scanner. 
Check the transformer, outlet and the power strip.  Make sure 
the power cable is plugged into the scanner. 
During power up the unit 
beeps 3 times.  A Non-volatile RAM failure.  Contact a Metrologic service representative, if the unit will not 
hold the configuration.  
During power up the unit 
razzes continuously.  A RAM or ROM failure.  Contact a Metrologic service representative, if the unit will not 
function. 
During power up the unit 
razzes once and the blue 
LED flashes. 
A VLD failure.  Contact a Metrologic service representative. 
During power up the unit 
razzes twice and both 
LEDs flash. 
Scanner motor failure.  Contact a Metrologic service representative. 
There are  
multiple scans upon 
presentation of code. 
The same symbol timeout is 
set to short.  Adjust same symbol timeout for a longer time. 
The beeper is disabled.  Enable the beeper. 
No volume is selected.  Select a volume. 
The unit powers up but 
does not beep. 
No tone is selected.  Select a tone. 
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 powers up but 
does not scan and/or 
beep. 
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 scans, 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 that 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. 
Check the character length 
lock. 
Scanner beeps at some 
bar codes and NOT 
form others of the same 
bar code symbology. 
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.