Toshiba Qosmio F20-110 User Manual page 8

DVD Super Multi with Double Layer Recording UJ-840
The DVD Super Multi drive with Double Layer Recording model
employs a laser system. To ensure proper use of this product, please
read this instruction manual carefully and retain for future reference.
Should the unit ever require maintenance, contact an authorized
service location.
Use of controls, adjustments or the performance of procedures other
than those specified may result in hazardous radiation exposure.
To prevent direct exposure to the laser beam, do not try to open the
enclosure.
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