User's Manual

Compliance and Safety Manual
3 Safety Information
Issue (2011-06-25)
Huawei Technologies Proprietary
3-15

When replacing the ambient equipment around the fan, do not place the finger or board
into the running fan until the fan is switched off and stops running.
WARNING

Only Huawei can open the device shell to maintain the fans.

Disconnect the power source prior to open case, and close case before restoring power
which stated in the instruction.

Failure unit should be sent back to the manufacturer for repair by skilled person which
stated in the instruction.
3.6.4 Lifting Heavy Objects
WARNING
When lifting heavy objects, do not stand or walk under the arm or the lifted object.
3.7 Miscellaneous
3.7.1 Inserting and Removing a Board
To insert or remove a board, abide by the following requirements:
CAUTION
When inserting a board, handle it gently to avoid distorting pins on the backplane.

Insert the board along the slot guide.

The two sides of one board should not contact another board to avoid short-circuit or
scratch.

When holding a board in hand, do not touch the board circuit, components, connectors,
or connection slots.
3.7.2 Bundling Signal Cables