TP48200A-DX12A1 Telecom Power
User Manual
4 Maintenance
Issue 07 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
47
Figure 4-9
Removing an SMU
Step 3
Insert the new SMU into the subrack, push the locking latch towards the left, and pull out the
handle.
Step 4
Slide the SMU into the subrack slowly along the guide rails, push in the handle, and then push
the locking latch towards the right.
Step 5
Reset the parameters on the SMU.
Figure 4-10
Installing an SMU
----End
Follow-up Procedure
Pack the removed component and send it to the local Huawei warehouse.
4.4.6 Replacing an AC SPD Module
Prerequisites
You have obtained an ESD wrist strap or a pair of ESD gloves, an ESD box or bag, and
the cabinet door key.
The new AC SPD module is intact and the indication window is green.
Do not replace an AC SPD module during a thunderstorm.
Procedure
Step 1
Connect the ground cable to the ESD wrist strap and wear the ESD wrist strap and ESD
gloves.