Lenovo ThinkStation 4215 Hardware Maintenance Manual page 122

6. Insert the two tabs 2 of the new front fan assembly into the corresponding
Figure 35. Installing the front fan assembly
7. Connect the front fan assembly cable to the power fan connector on the system
8. Reinstall the secondary hard disk drive if removed. See "Replacing the
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Hardware Maintenance Manual
holes in the chassis, and press the other two tabs 1 through the holes until
the front fan assembly is secured in place.
board.
secondary hard disk drive" on page 109.
What to do next:
v To work with another piece of hardware, go to the appropriate section.
v To complete the replacement, go to "Completing the FRU replacement" on
page 122.