TP48200A-HT19C3 and TP48200A-HT19C4 Telecom
Power
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
68
Step 6
Connect the power cable for the UIM02C.
1.
Reconnect the -48 V power cable to the UIM02C backplane.
2.
Push in the UIM02C and tighten the screws.
3.
Reconnect signal cables to the UIM02C panel based on the recorded positions.
4.
Disconnect the ground cable from the ESD wrist strap, and take off the ESD wrist strap
and ESD gloves.
----End
4.4.8 Replacing a TCUA Control Board
Prerequisites
You have obtained an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, and the
cabinet door key.
The new TCUA control board is intact.
Context
You only need to disconnect the power supply to the TCUA control box, but do not need to
disconnect the AC input to the power system.
Procedure
Step 1
Connect the ground cable to the ESD wrist strap, and put on the ESD wrist strap and ESD
gloves.
Step 2
Remove the TCUA control box.
1.
Switch off the circuit breaker (F10) for the TCUA control box on the DC PDU.
2.
Record positions where cables connect to the TCUA control box and disconnect the
cables.
3.
Unscrew and remove the TCUA control box, as shown in Figure 4-17.