Metrologic Instruments MLPN 2159 - Manual (Page 10)

7
Visual Indicators
There is a red and green LED at the top of the scanner. When the scanner is
on, the flashing or stationary activity of the LEDs indicates the status of the
scan and scanner.
Steady Green
When the laser is on, the green LED is also on. This occurs when an object is
in the scan field.
Steady Green; Red Flash
When the scanner successfully reads a bar code, the red LED will flash then
beep once. If the red LED does not flash or the scanner does not beep once,
then the bar code has not been successfully read.
Steady Red and Green
After a successful scan, the scanner transmits the data to the host device. When
the host is not ready to accept the information, the scanner’s red LED will
remain on until the data can be transmitted.
Alternating Red and Green
This indicates the scanner is in program mode.
Steady Red
This indicates the scanner is in ScanSet mode.
No Red or Green LED
There are two reasons why the LEDs will not be illuminated. First, if the
scanner is receiving power and the LEDs are not on, then the scanner has
remained dormant for a specified time and the laser has turned off. To
reactivate the unit, touch the touch plate. Secondly, if the scanner is not
receiving power from the host or transformer, then the LEDs will not turn on.
Flashing Red
This indicates the scanner has experienced a laser subsystem failure. Return
the unit for repair at an authorized service center.