TP48200A-DT19C1, TP48200A-DT19C2,
TP48200A-HT19C1 and TP48200A-HT19C2 Telecom
Power
User Manual
Copyright © Huawei Technologies Co., Ltd.
Figure 4-10 Removing the PCB of UIM02C
Step 7 Take out the new PCB and install it.
Step 8 Connect all cables back to the new PCB based on the record made previously.
Step 9 Connect the –48 V power cable to the PCB of UIM02C.
Step 10 Push in the UIM02C and tighten the screws.
Step 11 Reconnect signal cables to the UIM02C panel based on the recorded information.
Step 12 Disconnect the ground cable from the ESD wrist strap, and remove the ESD wrist strap and
ESD gloves.
----End
Follow-up Procedure
Pack the removed component and return it to the local Huawei warehouse.
4.4.6 Replacing the Internal Circulation Fan of the Heat Exchanger
(for the TP48200A-HC1 & HC2)
Prerequisites
Prepare an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, the cabinet door
key, and a maintenance tool kit.
Check that the new fan 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 Switch off the circuit breaker (F10) for the TCUA control box on the DC PDU.
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