Follow-up Procedure
After replacing the PEM, collect all tools. If the replaced PEM is faulty, fill in the
and send the faulty module with the Repair Transmission Sheet to the
equipment supplier or the specified repair service provider.
3.4.2 Replacing the DC PEM of the USG9560
This section describes the procedure for replacing the DC power module of the USG9560.
Precautions
l
Before replacing a PEM, power it off by turning off the corresponding air circuit breaker
on the power distribution cabinet. The PEM to be replaced is powered off. In addition,
you need to switch off the PEM.
l
The USG9560 has four PEMs, You can power off one PEM during replacement.
shows the PEM.
Figure 3-29
PEM
Tools
l
ESD wrist strap or ESD gloves
l
Phillips screwdriver
Procedure
Step 1
Check the location of the PEM to be replaced.
Before removing the old PEM, check its location, that is, the cabinet and chassis where the
PEM resides, and label the PEM.
HUAWEI USG9500 Series
Hardware Guide
3 Hardware Maintenance
Issue 03 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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