Brother DCP-L8400CDN Service Manual page 18

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Caution for Laser Product (WARNHINWEIS für Laserdrucker )
CAUTION: In case of any trouble with the laser unit, replace the laser unit itself.
To prevent direct exposure to the laser beam, do not try to open the
enclosure of the laser unit.
ACHTUNG: Im Falle von Störungen der Lasereinheit muß diese ersetzt werden.
Das Gehäuse der Lasereinheit darf nicht geöffnet werden, da sonst
Laserstrahlen austreten können.
<Location of the scanner windows>
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Additional Information
When servicing the optical system of the machine, be careful not to place a screwdriver or
other reflective object in the path of the laser beam. Be sure to take off any personal
accessories such as watches and rings before working on the machine. A reflected beam,
though invisible, can permanently damage the eyes.
Since the beam is invisible, the following caution label is attached on the laser unit.
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