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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. Pg. 37.
All Interfaces
MS6720 Troubleshooting Guide
SYMPTOMS POSSIBLE CAUSE(S) SOLUTION
No LEDS, beep No power at power up Check transformer, outlet and power
or motor spin strip
NOTE: If it’s a direct connect scanner, the problem could be inadequate power being supplied to
the scanner. It may be necessary to use a Metrologic transformer for power. Check the
fuse in the MCA.
3 beeps on Non-volatile RAM failure Contact a Metrologic Rep, if the unit
power up will not hold the programmed
configuration
Continuous razz RAM or ROM failure Contact a Metrologic Rep, if the unit
tone on power will not function
up
Razz tone and VLD failure Contact a Metrologic Rep
red LED flash at
power up
Razz tone and Scanner motor failure Contact a Metrologic Rep
both LEDs flash
at power up
Unit scans, Same symbol timeout set Adjust same symbol timeout for a
Communicates too short longer time
and beeps twice