Replacing A Tcua Control Board - Huawei TP48200A-HT19C4-1 User Manual

TP48200A-HT19C4-1 and TBC300A-TCA2 Telecom
Power
User Manual
Step 6 Connect the power cable for the UIM02C.
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4.4.8 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 for 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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Issue 03 (2019-11-15)
Reconnect the -48 V power cable to the UIM02C backplane.
Push in the UIM02C and tighten the screws.
Reconnect signal cables to the UIM02C panel based on the recorded positions.
Disconnect the ground cable from the ESD wrist strap, and take off the ESD wrist strap
and ESD gloves.
Prepare an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, and the cabinet
door key.
Check that the new TCUA control board is intact.
Switch off the circuit breaker 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 4-17.
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