Thermal Cooling Assembly 4512Thermal Cooling AssemblyWARNING: Before working inside your computer, read the safety informationthat shipped with your computer. For additional safety best practices information,see the Regulatory Compliance Homepage atwww.dell.com/regulatory_compliance.CAUTION: Only a certified service technician should perform repairs on yourcomputer. Damage due to servicing that is not authorized by Dell is not covered byyour warranty.CAUTION: To avoid electrostatic discharge, ground yourself by using a wristgrounding strap or by periodically touching an unpainted metal surface (such as aconnector on your computer).CAUTION: To help prevent damage to the system board, remove the main battery,see "Removing the Battery" on page 13, before working inside the computer.Removing the Thermal Cooling Assembly1 Follow the instructions in "Before You Begin" on page 9.2 Remove the battery. See "Removing the Battery" on page 13.3 Follow the instructions from step 3 to step 8 in "Removing the Palm-RestAssembly" on page 29.4 Disconnect the display cable from the connector on the system board andpeel the cable off the thermal cooling assembly.5 Disconnect the fan cable from the connector on the system board.6 In sequential order (indicated on the thermal cooling assembly), loosenthe four captive screws that secure the thermal cooling assembly to thesystem board.7 Lift the thermal cooling assembly away from the computer.