Lenovo H405 Lenovo H4 Series Hardware Replacement Guide V1.0 - Page 21
Replacing the heatsink assembly
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Replacing the heatsink assembly Attention: Do not remove the computer cover or attempt any repair before reading the "Important safety information" in the Safety and Warranty Guide that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and Warranty Guide or HMM, go to the Support Web site at: http://consumersupport.lenovo.com To replace the heatsink assembly: 1. Remove the computer cover. Refer to "Removing the computer cover". 2. Lay the computer on its side. 3. Locate the heatsink. Refer to "Identifying parts on the system board". 4. Disconnect the heatsink and the fan assembly cable from the system board. 5. Remove the four screws securing the heatsink and fan assembly to the system board. 6. Lift the failing heatsink and fan assembly off the system board. 18 Hardware Replacement Guide 31045292_H4_HRG_EN_V1.0.indd 18 2010.9.19 11:11:28 AM