TP48200A-HT19C3 and TP48200A-HT19C4 Telecom
Power
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
61
4.4.5 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 Figure 4-8.
Figure 4-8
Taking out the main board of UIM02C
Step 4
Remove the –48 V power cable from the PCB of UIM02C.