Lenovo System x3550 M3 Problem Determination And Service Manual page 10

When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters) are
installed, note the following:
• Do not remove the covers. Removing the covers of the laser product could result in exposure to
hazardous laser radiation. There are no serviceable parts inside the device.
• Use of controls or adjustments or performance of procedures other than those specified herein
might result in hazardous radiation exposure.
DANGER
Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the following.
Laser radiation when open. Do not stare into the beam, do not view directly with optical
instruments, and avoid direct exposure to the beam.
Statement 4
CAUTION: Use safe practices when lifting.
≥ 18 kg (39.7 lb)
Statement 5
CAUTION:
System x3550 M3Problem Determination and Service Guide
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≥ 32 kg (70.5 lb) ≥ 55 kg (121.2 lb)