HP Compaq Presario,Presario 7480 Reference Manual page 97

The CD drive is classified as a Class 1 laser product. This label is located on the
outside of the CD drive:
Laser Type
Wavelength
Divergence Angle
Output Power
Polarization
Numerical Aperture
a a a a
WARNING: Only authorized technicians trained by Compaq should attempt to repair this equipment. All
troubleshooting and repair procedures are detailed to allow only subassembly/module-level repair.
Because of the complexity of the individual boards and subassemblies, no one should attempt to make
repairs at the component level or to make modifications to any printed wiring board. Improper repairs
can create a safety hazard.
12-14
Figure A-1. Laser Label
Laser Label Information
Semiconductor GaAIAs
650-780 +/- 35 nm
53.5 Degree +/- 5 Degree
Less than 0.2 mW or 10.869 W/m
Circular
0.45 +/- 0.04
Laser Information
2
sr
Government Approvals