IBM B50 - Manual (Page 14)

Laser Safety Information
The optical drive in the RS/6000 7046 Model B50 is a laser product. The optical
drive has a label that identifies its classification. The label, located on the drive, is
shown below.
CLASS 1 LASER PRODUCT
LASER KLASSE 1
LUOKAN 1 LASERLAITE
APPAREIL A LASER DE CLASSE 1
IEC 825:1984 CENELEC EN 60 825:1991
The optical drive in the RS/6000 7046 Model B50 is certified in the U.S. to conform
to the requirements of the Department of Health and Human Services 21 Code of
Federal Regulations (DHHS 21 CFR) Subchapter J for Class 1 laser products.
Elsewhere, the drive is certified to conform to the requirements of the International
Electrotechnical Commission (IEC) 825 (1st edition 1984) and CENELEC EN 60
825:1991 for Class 1 laser products.
CAUTION:
A class 3 laser is contained in the device. Do not attempt to operate the drive
while it is disassembled. Do not attempt to open the covers of the drive as it
is not serviceable and is to be replaced as a unit.
Class 1 laser products are not considered to be hazardous. The optical drive
contains internally a Class 3B gallium-arsenide laser that is nominally 0.14 milliwatts
at 830 nanometers. The design incorporates a combination of enclosures,
electronics, and redundant interlocks such that there is no exposure to laser radiation
above a Class 1 level during normal operation, user maintenance, or servicing
conditions.
xii 7046 Model B50 Service Guide