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TP48200A-DT19D1 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, the cabinet door key, and tools.

  • Check that the new TCUA control board is intact.

Context

You need only to disconnect the power cable from the TCUA, instead of the AC input to the power system.

Procedure

  1. Connect the ground cable to the ESD wrist strap, and wear the ESD wrist strap and ESD gloves.
  2. Remove the TCUA control box.
    1. Switch off the TCUA circuit breaker (beside battery 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 4-14.

      Figure 4-14  Removing the TCUA

  3. Remove the TCUA control board.
    1. Unscrew the TCUA control board, as shown in Figure 4-15.

      Figure 4-15  Removing the TCUA control board

    2. Record the positions of TEC04C cables on the TCUA control board, disconnect the cables, and then remove the TCUA control board.
    3. Record the positions of jumper caps on the TCUA control board, as shown in Figure 4-16.

      Figure 4-16  Jumper caps on the TCUA control board

  4. Install a new TCUA control board.
    1. Set jumper caps for the new TCUA control board based on the recorded information.
    2. Install the new TCUA control board in the TCUA.
    3. Reconnect the cables between the TEC04C and the new TCUA control board based on the recorded information.
  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: EDOC1000078784

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