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4 Replacement Procedures 4.11 System Board, AC-IN cable
M2 5x8 black flat head screw.
AC IN cable-
Audio board cable
USB connector cable
CN12
Sub speaker-
CN803
System board
CN19
CN20
Figure 4-23 Removing the system board
7. Disconnect the audio board cable from CN18.
8. Disconnect the USB cable from CN20.
9. Disconnect the sub-speaker cable from CN12.
10. Remove the system board.
11. Turn the system board upside down.
12. Remove the AC-IN cable from CN803.
4-44 Qosmio F40/F45 Maintenance Manual