TP48200A-HT15D3 Telecom Power (Russia, Megafon)
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
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2.
Reconnect the cables to the TCUA based on the recorded information.
3.
Switch on the TCUA circuit breaker on the DC PDU.
Step 6
Disconnect the ground cable for the ESD wrist strap, and take off the ESD wrist strap and
ESD gloves.
----End
Follow-up Procedure
Pack the removed component, and return it to Huawei local warehouse.
4.4.10 Replacing the TEC
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 TEC is intact.
Context
Disconnect the power supply to the TEC control box, instead of the AC input to the power
system.
Procedure
Step 1
Disconnect the power supply to the TEC control box, and record the cable information.
1.
Connect the ground cable for the ESD wrist strap, and put on the ESD wrist strap and
ESD gloves.
2.
Switch off the TEC circuit breaker on the DC PDU.
3.
Record the positions of TEC power cables and signal cables on the TEC control board,
and disconnect the cables.
Step 2
Remove the TEC.
1.
Unscrew and remove the cover on the cabinet door, as shown in Figure 4-19.