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92 Chapter 3
17. Remove the one screw (B) securing the USB board to the lower case.
18. Lift the USB board and disconnect the cable from USBCN1 on the USB board.
Removing the Main Board
1. See “Removing the Battery Pack” on page 54.
2. See “Removing the SD dummy card” on page 55.
3. See “Removing the PC and ExpressCard dummy cards” on page 56.
4. See “Removing the Lower Cover” on page 57.
5. See “Removing the DIMM” on page 58.
6. See “Removing the WLAN Board Modules” on page 59.
7. See “Removing the Hard Disk Drive Module” on page 61.
8. See “Removing the Optical Drive Module” on page 62.
9. See “Removing the Middle Cover” on page 66.
10. See “Removing the Keyboard” on page 69.
11. See “Removing the Heatsink Fan Module” on page 70.
12. See “Removing the CPU and VGA Heatsink Module” on page 71.
13. See “Removing the CPU” on page 72.
Step Size (Quantity) Color Torque
1 M2 x L4 (1) Silver 1.6 kgf-cm