Yamaha BD-S671 Owner's Manual page 61

CAUTION
Use of controls or adjustments or performance of
procedures other than those specified herein may result
in hazardous radiation exposure.
LASER Specification:
Class 1 LASER Product
Wave length: 790 nm (CDs)/658 nm (DVDs)/405 nm (BDs)
Laser output: max. 1 mW
LASER SAFETY
This unit employs a laser. Due to possible eye injury, only
a qualified service person should remove the cover or
attempt to service this device.
DANGER
This unit emits visible laser radiation when open. Avoid
direct eye exposure to beam. When this unit is plugged
into the wall outlet, do not place your eyes close to the
opening of the disc tray and other openings to look into
inside.
CAUTION:
INVISIBLE LASER RADIATION WHEN OPEN.
DO NOT STARE INTO BEAM.
DANGER:
INVISIBLE LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO THE BEAM.