Precautions for Use (Be Sure to Read)
Express5800/53Xi, Y53Xi User's Guide
15
Cleaning and working with internal devices
WARNING
Do not disassemble, repair, or alter the workstation.
Never attempt to disassemble, repair, or alter the workstation on any occasion other than described in this
document. Failure to follow this instruction may cause an electric shock or fire as well as malfunctions of the
workstation.
Do not look into the optical disk drive.
A laser beam used in the optical disk drive is harmful to your eyes. Do not look into or insert a mirror into the
drive while the drive is powered. If a laser beam is caught in your eyes, you may lose your eyesight (the
laser beam is invisible).
Do not attempt to remove lithium, NiMH, or Li-ion batteries.
The workstation contains the lithium battery (some optional devices have a lithium, NiMH, or Li-ion battery
installed). Do not remove the battery. Placing a battery close to a fire or in the water may cause an
explosion or a fire.
When the workstation does not operate appropriately due to the dead battery, contact the store you
purchased the product or your maintenance service company. Do not attempt to disassemble the
workstation to replace or recharge the battery by yourself.
Disconnect the power plug before working with the workstation.
Make sure to power off the workstation and disconnect the power plug from a power outlet before cleaning
the workstation, installing/removing internal optional devices, or connecting/disconnecting internal cables.
Touching any internal component of the workstation with its power cord connected to a power source may
cause an electric shock even if the workstation is off-powered.
Disconnect the power plug from the outlet occasionally and clean the plug with a dry cloth. Heat will be
generated if condensation is formed on a dusty plug, which may cause a fire.
Do not connect any earth wire with the power cord of the workstation plugged to a power source.
Make sure to power off the workstation and unplug the power cord from a power outlet before
connecting/disconnecting any earth wire to/from the workstation. If the workstation is off-powered but its
power cord is plugged to a power source, touching an earth wire may cause an electric shock or a fire
resulted from a short circuit.
