Lenovo ThinkStation C30 Hardware Maintenance Manual page 124

13. Remove the cables from the cable manager and then pivot the cable manager to open it.
Figure 54. Opening the manager
14. Note the location of all cable connections on the system board and disconnect all cables. See "Locating
parts on the system board" on page 76.
15. Remove the ten screws that secure the system board to the chassis by following the sequence shown
in the following illustration.
Figure 55. Ten screws that secure the system board to the chassis
118
ThinkStation Hardware Maintenance Manual