Metrologic Instruments MS7220 manual Codes. The scanner

TROUBLESHOOTING GUIDE (CONTINUED)

SYMPTOMS

POSSIBLE CAUSE(S)

SOLUTION

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

Scanning a particular symbology that is not enabled

UPC/EAN, Code 39, interleaved 2 of 5, Code 93, Code 128 and Codabar are enabled by default. Verify that the type of bar code being read has been selected

The unit powers	The scanner has been	Verify that the bar code that
up, but does	programmed for a	is being scanned falls into
not scan and/or	character length lock,	the criteria.
beep	or a minimum length	(Typical of Non-UPC/EAN
	and bar code being	codes. The scanner
	scanned does not	defaults to a minimum of 4
	satisfy the	character bar code.)
	programmed criteria
The unit scans	The scanner is	If the scanner is setup to
a bar code, but	configured to support	support ACK/NAK,
locks up after	some form of host	RTS/CTS, XON/XOFF or
the first scan	handshaking but is not	D/E, verify that the host
(red LED stays	receiving the signal	cable and host are
on)		supporting the handshaking
		properly
The unit scans,	The scanner’s data	Verify that the scanner’s
but the data	format does not match	data format matches that
transmitted to	the host system	required by the host. Make
the host is	requirements	sure that the scanner is
incorrect		connected to the proper
		host port
Scanner beeps	The print quality of the	Check print mode. The type
at some bar	bar code is suspect	of printer could be the
codes and NOT		problem. Change print
for others of the	Also check character	settings. For example
same bar code		change to econo mode or
	length lock.
symbology		high speed
Scanner beeps	The aspect ratio of the	Check print mode. The type
at some bar	bar code is out of	of printer could be the
codes and NOT	tolerance	problem. Change print
for others of the		settings. ie change to econo
same bar code		mode or high speed
symbology

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