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TP48200A-HT19C4-1, TBC300A-TCA2 Outdoor Power System User Manual

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Replacing a TCUA Control Board

Replacing a TCUA Control Board

Prerequisites

  • 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.

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

  1. Connect the ground cable for the ESD wrist strap, and put on the ESD wrist strap and ESD gloves.
  2. Remove the TCUA control box.
    1. Switch off the circuit breaker for the TCUA control box on the DC PDU.
    2. Record positions where cables connect to the TCUA control box and disconnect the cables.
    3. Unscrew and remove the TCUA control box, as shown in Figure 4-17.

      Figure 4-17  Removing a TCUA control box

  3. Remove the TCUA control board.
    1. Unscrew the TCUA control board, as shown in Figure 4-18.

      Figure 4-18  Removing a TCUA control board

    2. Record positions where the TEC cable connects to the TCUA control board, disconnect the cable, and then take down the TCUA control board.
    3. Record the positions of the jumper caps on the TCUA control board.

      NOTE:

      For details about the jumper caps and port cables connection on the TCUA control board, see the appendix.

  4. Install a new TCUA control board.
    1. Set the jumper caps for the new TCUA control board based on the recorded information.
    2. Install the new TCUA control board into the control box.
    3. Connect the cable between the TCUA module and the new TCUA control board based on the recorded information.
  5. Install the TCUA control box.
    1. Tighten the screws to secure the TCUA control box.
    2. Connect cables to the TCUA control box based on the recorded positions.
    3. Switch on the circuit breaker for the TCUA control box on the DC PDU.
  6. Disconnect the ground cable from the ESD wrist strap, and take off the ESD wrist strap and ESD gloves.

Follow-up Procedure

Send the replaced TCUA for repair.

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Updated: 2019-03-05

Document ID: EDOC1000078969

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