Parts replacement is risky to a certain extent. Hence, 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, that
is, whether the risks can be controlled through certain measures if the
system remains active. Maintenance personnel can replace the parts only
when the risks can be controlled. Otherwise, contact a Huawei local
oce for timely technical support.
2. Prepare tools and spare parts.
After determining that the operation is feasible, maintenance personnel need
to prepare tools and spare parts.
a. Prepare spare parts.
Before replacing the component, 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.
b. The common tools include the multimeter, cable tester, ESD wrist strap,
Phillips screwdriver,
at-head screwdriver, needle-nose pliers, cutter, and
pliers.
3. Take protective measures.
Although parts replacement is risky, in most cases, however, maintenance
personnel can prevent the risks by taking protective measures. For example,
before replacing a master board, maintenance personnel can switch services
on the master board to the slave board. After the slave board runs properly,
maintenance personnel can replace the master board. In this manner,
interruption of services is prevented.
Therefore, to ensure safe operation of a device and to minimize the impact of
parts replacement on services, maintenance personnel must take related
protective measures.
4. Replace parts.
After checking that the protective measures are available, maintenance
personnel can carry out parts replacement according to the regulations
specied in the manual.
Wear an ESD wrist strap or ESD gloves before replacing parts when the power
is on.
Avoid direct eye exposure to the laser beam launched from the optical
interface board or
ber.
HUAWEI NetEngine 8000 F
Hardware Guide 4 Hardware Installation and Parts Replacement
Issue 05 (2023-03-31) Copyright © Huawei Technologies Co., Ltd. 625
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