HP Z800 HP Z800 Workstation Maintenance and Service Guide - Page 184
CPU heatsink, Removing the CPU heatsink
UPC - 884962082454
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CPU heatsink This section describes how to remove and install a CPU heatsink. Removing the CPU heatsink 1. Power down the workstation (see Predisassembly procedures on page 74). 2. Disconnect power from the workstation (see Predisassembly procedures on page 74). 3. Remove the side access panel (see Removing the side access panel on page 76). 4. Remove the memory fans (see Removing the memory fans on page 137). 5. Remove the airflow guide (see Removing the airflow guide on page 77). 6. Slowly and evenly loosen one pair of diagonally opposite screws from the CPU until the screw shanks disengage from the system board, and then loosen the remaining pair 2 as shown in the following figure. CAUTION: Do not fully loosen one screw, and then move on to the next. Instead, loosen all screws a little at a time, ensuring that the CPU remains level. Figure 5-122 Loosening heatsink screws in sequence 172 Chapter 5 Replacing components ENWW