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TP48200A-HT15D3 Outdoor Power System User Manual (Russia, Megafon)

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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 the TCUA Control Board

Replacing the TCUA Control Board

Prerequisites

  • 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.

Context

Disconnect the power supply to the TCUA, instead of 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.
    1. Switch off the TCUA circuit breaker on the DC PDU.
    2. Record the positions of cables on the TCUA, and disconnect the cables.
    3. Unscrew and remove the TCUA, as shown in Figure 4-16.

      Figure 4-16  Removing a TCUA

  3. Remove the TCUA control board.
    1. Unscrew and remove the TCUA control board, as shown in Figure 4-17.

      Figure 4-17  Removing a TCUA control board

    2. Record the positions of TEC cables connected to the TCUA control board, disconnect the cables, and remove the TCUA control board.
    3. Record the positions of the jumper caps on the TCUA control board, as shown in Figure 4-18.

      Figure 4-18  Jumper caps on the TCUA control board

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

Follow-up Procedure

Pack the removed component, and return it to Huawei local warehouse.

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Updated: 2019-03-05

Document ID: EDOC1000078967

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