Dell OptiPlex G1 - Manual (Page 78)

SEC Cartridge/Heat Sink Assembly Removal (Mini Tower Chassis): Dell ™ OptiPlex ™ G1 Systems
To remove the SEC cartridge/heat sink assembly, follow these steps:
1. Remove the system power supply .
2. Locate the SEC cartridge/heat sink assembly.
3. Disconnect the
microprocessor fan connector from the three-pin FAN connector on the system board. The connector is located between the SERIAL 2
connector and the MONITOR connector.
4. Slide the two securing clips near the base of the heat sink inward to release them from the metal standoffs.
5. Locate and press inward on the SEC cartridge release latches (located directly on top of the SEC cartridge adjacent to the heat sink assembly) until the latches
click.
6. Lift the SEC cartridge/heat sink assembly out of its guide bracket assembly/connector on the system board.
WARNING: The SEC cartridge/heat sink assembly can get extremely hot during system operations. Be sure that the assembly has had sufficient
time to cool before touching it.
NOTE: When installing the SEC cartridge/heat sink assembly, carefully orient the assembly and press firmly with up to 25 pounds of force to mate the
SEC cartridge with its connector. Then slide the SEC cartridge release latches outward to lock the assembly onto the metal standoffs.