HP Z800 HP Z800 Workstation Maintenance and Service Guide - Page 184

CPU heatsink, Removing the CPU heatsink

Page 184 highlights

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

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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