Lenovo ThinkCentre Edge 91 Hardware Maintenance Manual page 135

Machine types: 1852, 1853, 1855, 1857, 1893, 1895, 3247, 3248, 3250, and 3253
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4. Pivot the drive bay assembly upward. Then, pivot the two plastic retaining clips outward to remove
the heat sink fan duct from the failing heat sink and fan assembly.
Figure 65. Removing the heat sink fan duct
5. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the system
board. See "Locating parts on the system board" on page 109.
.
Chapter 9
Replacing FRUs (Machine Types: 1857, 1893, and 1895)
131

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