Huawei SmartAX MA5612 Maintenance Manual page 29

SmartAX MA5612 Multi-service Access Module
Maintenance Guide
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Precautions for Replacing Cables
When installing or maintaining an optical interface board or optical fiber, do not look directly
at the optical port or the optical fiber connector without wearing protective glasses.
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Parts
Power
cable
Issue 01 (2012-07-25)
If an optical transceiver is difficult to remove, you can pull the handle bar of the optical
transceiver and press the optical transceiver with your thumb on the side with the handle
bar against the other side to remove the optical transceiver.
The curvature radius of the optical fiber must be 20 times greater than the diameter of the
optical fiber. Generally, the curvature radius is greater than or equal to 40 mm.
DANGER
Take ESD measures before the replacement.
When removing a cable, make sure that you do not pull other cables by accident. When
routing a new cable, make sure that it is not entangled with other cables.
If the cable to be replaced is inside a bundle, provided that the cabinet is in a good ventilation
condition, it is suggested to directly cut off the connectors at both ends of the cable using
diagonal pliers. In this case, you need not remove the old cable from the bundle.
Precautions
l If software-related operations can
be performed through the GUI and
the CLI in the system, save data
before performing the replacement
in the field. If data fails to be saved,
perform the replacement directly.
l During replacement, make sure
that the input power of the power
cable to be replaced is turned off.
l Insulate the DC terminals and other
exposed electrical parts.
l Connect the positive end and
negative end of a power cable
correctly.
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