TP48200A-DX08A1 and TP48200A-DX08A2 Telecom
Power
User Manual
4 Maintenance
Issue 06 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
51
4.4.6 Replacing the TCUC 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 TCUC control board is intact.
Context
You need only to disconnect the power input the TCUC, instead of the AC input to the power
system.
Procedure
Step 1
Connect the ground cable for the ESD wrist strap, and put on the ESD wrist strap and ESD
gloves.
Step 2
Remove the TCUC.
1.
Switch off the TCUC circuit breaker on the DC PDU.
2.
Record the positions of cables on the TCUC, and disconnect the cables.
3.
Unscrew and remove the TCUC, as shown in Figure 4-11.
Figure 4-11
Removing a TCUC
Step 3
Remove the TCUC control board.
1.
Unscrew the TCUC control board, as shown in Figure 4-12.
