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戴尔 Precision 7740 服务手册

卸下 WWAN 卡

  1. 按照“拆装计算机内部组件之前”中的步骤进行操作。
  2. 卸下以下组件:
    1. SD 卡
    2. 电池护盖
    3. 电池
    4. 基座护盖
  3. 要卸下 WWAN 卡:
    1. 拧下将 WWAN 金属支架固定至系统板的一颗 (M2.0x3.0) 螺钉 [1]。
    2. 卸下固定 WLAN 天线线缆的 WWAN 金属支架 [2]。
    3. 断开连接到 WWAN 卡的 WWAN 天线线缆并将其拔出 [3]。
    4. 滑动 WWAN 卡并从系统板上的 WWAN 卡插槽中卸下 [4]。
      卸下 WWAN 卡

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