Lenovo 4219, 4220, 4222, 4215, 4221 manual Danger

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DANGER

Electrical current from power, telephone and communication cables is hazardous.

To avoid a shock hazard:

•Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm.

•Connect all power cords to a properly wired and grounded electrical outlet.

•Connect to properly wired outlets any equipment that will be attached to this product.

•When possible, use one hand only to connect or disconnect signal cables.

•Never turn on any equipment when there is evidence of fire, water, or structural damage.

•Disconnect the attached power cords, telecommunications systems, networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures.

•Connect and disconnect cables as described in the following tables when installing, moving, or opening covers on this product or attached devices.

To Connect		To Disconnect
1.	Turn everything OFF.	1.	Turn everything OFF.
2.	First, attach all cables to devices.	2.	First, remove power cords from outlet.
3.	Attach signal cables to connectors.	3.	Remove signal cables from connectors.
4.	Attach power cords to outlet.	4.	Remove all cables from devices.
5.	Turn device ON.

CAUTION:

When replacing the lithium battery, use only Part Number 45C1566 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:

•Throw or immerse into water

•Heat to more than 100°C (212°F)

•Repair or disassemble

Dispose of the battery as required by local ordinances or regulations.

Chapter 2. Safety information 7