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      CPU removal and installation - ThinkPad R400, T400

      For access, remove these FRUs in order:

      1. Battery.
      2. Palm rest or palm rest with fingerprint reader.
      3. Keyboard.
      4. Keyboard bezel.
      5. Speaker assembly.
      6. Fan assembly.

      Attention: CPU is extremely sensitive. When you service the CPU, avoid any kind of rough handling.

      Rotate the head of the screw in the direction shown by arrow (1) to release the lock; then remove the CPU.

      Step 1 - 3

      When installing: Place the CPU on the CPU socket (a), and then rotate the head of the screw in the direction shown by arrow (b) to secure the CPU.

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      • Alias ID: MIGR-71506
      • Document ID: PD011400
      • Last Updated :17 Jun 2014
      • © 2016 Lenovo