TP48200A-HX09A2, TBC300A-TCA2 Outdoor Power
System
User Manual
4 Maintenance
Issue 02 (2019-02-26)
Copyright © Huawei Technologies Co., Ltd.
55
Step 2
Pull the handle outwards and remove the SMU, as shown in
Figure 4-3
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 4-4
Installing an SMU
----End
Follow-up Procedure
Pack the removed component and send it to the local Huawei warehouse.
4.4.3 Replacing the PCB of UIM02C
Prerequisites
An ESD wrist strap, ESD gloves, ESD box or bag, cabinet door key, and required tools
are available.
The new PCB of UIM02C is intact.
Procedure
Step 1
Connect the ground cable to the ESD wrist strap, and wear the ESD wrist strap and ESD
gloves.
Step 2
Record the positions on the UIM02C panel for connecting signal cables and disconnect the
cables.
Step 3
Unscrew and remove the UIM02C, as shown in