Before plugging or unplugging any cable, shut down the device and
disconnect it from the power supply.
While plugging or unplugging any cable, make sure that your hands are
completely dry.
Do not tread on, pull, or over-bend any cable. Otherwise, the cable may
be damaged, leading to malfunction of the device.
Do not use an old or a damaged power cable.
During lightning whether, stop using the device and disconnect it from
the power supply. Unplug the power plug and the Asymmetric Digital
Subscriber Line (ADSL) twisted pair (the radio frequency cable) to avoid
lightning strike.
If the device is not used for a long time, disconnect it from the power
supply and unplug the power plug.
Do not look directly into the optical interface and the laser-transmitting
interface on the device, or the infrared transmitting interface on the
remote control with your eyes. Otherwise, your eyes may be injured.
In any of the following cases, stop using the device, disconnect it from the
power supply, and unplug the power plug immediately: there is smoke
emitted from the device, or there is some abnormal noise or smell.
Contact the specified maintenance center for repair.
Avoid any object (such as metal shavings) from entering the device from
the heat dissipation intakes.
Before connecting any other cable, connect the ground cable of the
device first. Do not disconnect the grounding cable until you disconnect
all other cables.
Make sure that the three-phase power socket is grounded reliably. The
neutral line and the live line shall not be connected inversely.
Do not scratch or abrade the shell of the device. This may lead to
malfunctions of the device. The shed painting material may also lead to
skin allergy.
Cleaning Requirements
Before cleaning the device, stop using it and disconnect it from the power
supply.
Use a piece of soft dry cloth to clean the device.
Keep the power plug clean and dry. Using a dirty or wet power plug may
lead to electric shock or other perils.
