Huawei NE05E Hardware Manual page 528

HUAWEI NE05E,NE08E
Hardware Guide
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Issue 05 (2023-03-31)
NO TE
Parts replacement can be carried out only by maintenance personnel who are
professionally trained. Specifically, maintenance personnel must familiarize
themselves with the functions of each part, the basic operation process of part
replacement, and the basic skills of part replacement.
– Whether the risks of the operation can be controlled. Part replacement is
risky.
NO TICE
Improper operation may cause abnormal running of the device, service
interruption, or injuries to the personnel. Therefore, before replacing
parts, maintenance personnel must comprehensively evaluate the risks of
the operation and determine whether the risks can be controlled through
certain measures when the power is on. Maintenance personnel can
replace the parts only when the risks can be controlled. Otherwise,
contact Huawei technical support personnel.
Prepare tools and spare parts.
After determining that the operation is feasible, maintenance personnel need
to prepare tools and spare parts.
– Prepare spare parts.
NO TICE
Before replacing the chassis or control board, contact Huawei engineers
to see if a license is required. You can apply for a license or use Stick
License to activate some license control items.
– The common tools include the multimeter, cable tester, ESD wrist strap,
Phillips screwdriver, flat-head screwdriver, needle-nose pliers, cutter, and
pliers.
Take protective measures.
Although part replacement is risky, in most cases, however, maintenance
personnel can avoid the risks by taking protective measures.
For example, before replacing a master control board, maintenance personnel
can switch services from the master control board to the slave control board.
After the slave control board runs properly, maintenance personnel can
replace the master control board. In this manner, interruption of services is
prevented.
Therefore, to ensure safe operation of a device and minimize the impact of
part replacement on services, maintenance personnel must take related
protective measures.
Replace parts.
When the protective measures are available, maintenance personnel can carry
out part replacement according to the procedures in this section.
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4 Hardware Installation and Parts Replacement
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