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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Metrologic Instruments MS2421, MS2422 manual Troubleshooting, Same symbol timeout is