TP48200A-HX09A2, TBC300A-TCA2 Outdoor Power
System
User Manual
4 Maintenance
Issue 02 (2019-02-26)
Copyright © Huawei Technologies Co., Ltd.
66
4.4.9 Replacing the TEC control board
Prerequisites
Prepare an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, and the cabinet
door key.
Check that the new TEC control board is intact.
Context
You only need to disconnect the power cable from the TEC control board, but do not need to
disconnect the AC input for the system.
Procedure
Step 1
Connect the ground cable to the ESD wrist strap and wear the ESD wrist strap and ESD
gloves.
Step 2
Switch off the circuit breaker for the TEC control box on the DC PDU.
Step 3
Remove the power cable from the TEC control box.
Step 4
Record the position where the TEC control board connects to the signal cable, and then
disconnect the signal cable.
Step 5
Unscrew the TEC control box and take down the TEC control box, as shown in