Replacing A Tcua Control Board - Huawei Telecom Power TP48200A-DT19C2 User Manual

TP48200A-DT19C1, TP48200A-DT19C2,
TP48200A-HT19C1 and TP48200A-HT19C2 Telecom
Power
User Manual
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Step 6 Installing the fan assembly.
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2.
Step 7 Install a UIM02C.
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Step 8 Disconnect the ground cable from the ESD wrist strap, and take off the ESD wrist strap and
ESD gloves.
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4.4.9 Replacing a TCUA Control Board

Prerequisites
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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 Remove the TCUA control box.
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3.
Issue 03 (2019-11-15)
Properly place the fan into the fan assembly and tighten the screws for the fan.
Tighten the screws that secure the fan fixing plate.
Tighten the screws that secure the cover.
Push the fan assembly into the fan assembly slot and tighten the screws.
Connect cables to the fan assembly based on the recorded positions.
Connect the -48 V power cable to the UIM02C backplane.
Push in the UIM02C and tighten the screws.
Connect the signal cable to the UIM02C panel based on the recorded position.
You have obtained an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, and the
cabinet door key.
The new TCUA control board is intact.
Switch off the circuit breaker (F10) for the TCUA control box on the DC PDU.
Record positions where cables connect to the TCUA control box and disconnect the
cables.
Unscrew and remove the TCUA control box, as shown in Figure 4-20.
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