Datalogic Scanning DLL2020 user manual C

TROUBLESHOOTING
33
C
C TROUBLESHOOTING
Problem Diagnostic Tips
The scanner is on but a
barcode cannot be read. The
LED is red.
• The scanner window is dirty. Clean
the scanner window as described
in the Maintenance section.
• The presented barcode type is not
enabled. Select the barcode type
with the Configuration Guide.
• The scanner is disabled by the
host. Refer to par. 1.6.
• The barcode type you presented to
the scanner is not supported by
DLL2020.
The scanner is on, but the
motor is not rotating. A
barcode cannot be read. The
LED is intermittently flashing
red.
• The scanner is in sleep mode.
Press the switch on top of the
scanner to reactivate the scanner
(or use the wake protocol. Refer to
par. 1.6).
The red LED and green LED
are alternating. • Mirror motor is defective and must
be replaced (Authorized personnel
only).
The red LED and green LED
are alternating and beeps are
heard.
• Possible failure of the scanning
safeguard circuit. Immediately
disconnect the scanner from its
power source. Contact your
supplier.
The scanner does not accept
more than two or three
barcodes.
• There is no proper handshaking
with the host system. Switch the
host system on and check
connection and communication
settings.
Both the red LED and green
LED are on. • The laser is not functioning. The
laser is defective. Contact your
supplier.