Replacing A Tcua Control Board - Huawei TP48200A-HX09A1 User Manual

TP48200A-HX09A1 and TBC300A-DCA5 Telecom
Power
User Manual

4.4.10 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.
1.
2.
3.
Issue 03 (2019-11-15)
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 (F1) 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 4-18.
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