Lenovo 90H9 Hardware Maintenance Manual page 15

Dispose of the battery as required by local ordinances or regulations.
CAUTION:
When laser products (such as CD-ROMs, DVD-ROM 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.
≥18 kg(37 lbs)
CAUTION:
Use safe practices when lifting.
≥32 kg(70.5 lbs) ≥55 kg(121.2 lbs)
Chapter 2. Safety information
9