Replacing The Tec Control Board - Huawei TP48200A-HX09A2 User Manual

TP48200A-HX09A2, TBC300A-TCA2 Outdoor Power
System
User Manual

4.4.9 Replacing the TEC control board

Prerequisites
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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
Issue 02 (2019-02-26)
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.
Copyright © Huawei Technologies Co., Ltd.
4 Maintenance
Figure 4-17.
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