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TP48200A-DT19D1 Telecom Power 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 the TEC04C

Replacing the TEC04C

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 TEC04C 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. Disconnect the power supply to the TCUA, and record the cable information.

    1. Connect the ground cable for the ESD wrist strap, and wear the ESD wrist strap and ESD gloves.
    2. Switch off the TCUA circuit breaker on the DC PDU.
    3. Disconnect the power cable from the TCUA.
    4. Record the positions of signal cables on the TCUA, and then disconnect the signal cables.
    5. Unscrew and remove the TCUA.
    6. Record the positions where the TEC04C power cable and signal cables connect to the TCUA control board, and disconnect the cables.

  2. Cut off the cable ties of the temperature sensor on the TEC fan and remove the sensor.
  3. Remove the TEC04C.

    1. Unscrew and remove the cover from the cabinet door, as shown in Figure 4-17.
      Figure 4-17 Removing the cover from the cabinet door

    2. Unscrew and remove the TEC04C, as shown in Figure 4-18.
    Figure 4-18 Removing a TEC04C

  4. Install a new TEC04C.

    1. Place the TEC04C and tighten the screws.
    2. Place the cover on the cabinet door, and secure the screws.

  5. Install the TCUA.

    1. Connect the TEC04C power cable and signal cables to the TCUA control board based on the recorded information.
    2. Tighten screws to secure the TCUA.
    3. Reconnect the cables to the TCUA based on the recorded information.

  6. Properly place the temperature sensor and bind it securely with cable ties.
  7. Connect the power cable to the TCUA securely.
  8. Switch on the TCUA circuit breaker on the DC PDU.
  9. 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: 2019-11-27

Document ID: EDOC1000078784

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