Lenovo ThinkCentre A52 Hardware Maintenance Manual page 16

CAUTION:
When replacing the lithium battery, use only Part Number 33F8354 or an
equivalent type battery recommended by the manufacturer. If your system has a
module containing a lithium battery, replace it only with the same module type
made by the same manufacturer. The battery contains lithium and can explode if
not properly used, handled, or disposed of.
Do not:
v Throw or immerse into water
v Heat to more than 100°C (212°F)
v Repair or disassemble
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:
v Do not remove the covers. Removing the covers of the laser product could
v Use of controls or adjustments or performance of procedures other than those
DANGER: Some laser products contain an embedded Class 3A or Class 3B laser
CAUTION:
Use safe practices when lifting.
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Hardware Maintenance Manual
result in exposure to hazardous laser radiation. There are no serviceable parts
inside the device.
specified herein might result in hazardous radiation exposure.
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) ≥32 kg (70.5 lbs) ≥55 kg (121.2 lbs)