Datalogic Scanning DLL2020 - Manual (Page 14)

GETTING STARTED
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1
Radiant Energy The DLL2020 uses a low-power laser diode operating
at 650 nm in an opto-mechanical scanner resulting in less than 0.7 mW
peak output power.
Laser light observed at 15.0 cm (5.9 inch) above the window through a 7
mm (0.28 in.) aperture and averaged over 1000 seconds is less than 3.9
µW per CDRH Class IIa specification. Do not attempt to remove the
protective housing of the scanner, as unscanned laser light with a peak
output up to 0.90 mW could be accessible inside.
Laser Light Viewer The scanner window is the only aperture through
which laser light may be observed on this product.
A failure of the scanner motor, while the laser diode continues to emit a
laser beam, may cause emission levels to exceed those for safe
operation.
The scanner has safeguards to prevent this occurrence. If, however, a
stationary laser beam is emitted, the failing scanner should be
disconnected from its power source immediately.
Adjustments Do not attempt to make any adjustments to or alteration of
this product. Do not remove the scanner’s protective housing. There are
no user-serviceable parts inside.
CAUTION
Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous laser light exposure.
1.5 MAINTAINING THE SCANNER
The DLL2020 scanner requires little maintenance. Only occasional
cleaning of the scanner window is necessary in order to remove dirt and
fingerprints. The scanner can be cleaned during operation. To this end
use a non-abrasive glass spray cleaner and a soft lint-free cloth only.