Metrologic Instruments MS2421, MS2422 manual Troubleshooting, The same symbol timeout is

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 LED, beep or motor	No power is being supplied		Check the transformer, outlet and the power strip. Make sure
spin.	to the scanner.		the power cable is plugged into the scanner.
During power up the unit	A Non-volatile RAM failure.		Contact a Metrologic service representative, if the unit will not
beeps 3 times.			hold the configuration.
During power up the unit	A RAM or ROM failure.		Contact a Metrologic service representative, if the unit will not
razzes continuously.			function.
During power up the unit
razzes once and the blue	A VLD failure.		Contact a Metrologic service representative.
LED flashes.
During power up the unit
razzes twice and blue	Scanner motor failure.	Contact a Metrologic service representative.
LED flash.
There are	The same symbol timeout is
multiple scans upon			Adjust same symbol timeout for a longer time.
	set to short.
presentation of code.
The unit powers up but	The beeper is disabled.		Enable the beeper.
	No volume is selected.		Select a volume.
does not beep.
	No tone is selected.		Select a tone.
	The unit is trying to scan a		UPC/EAN and Code 128 are enabled by default. Verify that
	particular symbology that is
			the type of bar code being read has been selected.
	not enabled.
The unit powers up but
	The unit has been
does not scan and/or	configured for a character		Verify that the bar code that is being scanned falls into the
beep.	length lock or a minimum		criteria.
	length and the bar code
	being scanned does not		Typical of Non-UPC/EAN codes. The scanner defaults to a
	satisfy the configured		minimum of 4 character bar code.
	criteria.
The unit scans a bar code,	The scanner is configured to		If the scanner is setup to support ACK/NAK, RTS/CTS,
but locks up after the first	support some form of host
			XON/XOFF or D/E, verify that the host cable and host are
scan (the blue LED stays	handshaking but is not
			supporting the handshaking properly.
on).	receiving the signal.
The unit scans but the	The scanner’s data format		Verify that the scanner’s data format matches that required by
data transmitted to the	does not match the host		the host. Make sure that the scanner is connected to the
host is incorrect.	system requirements.		proper host port.

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