HP Z800 Owners Manual

7.Angle the card into the PCI card guide. Align the PCIe card keyway with the slot key, and then
firmly seat the card in the slot as shown in the following figure 
.
If required by the card, connect the auxiliary power cable to the card (not illustrated), or other cables
or accessories described in the card instructions. (See 
Removing the expansion card guide/front
fan holder on page 126 to find the storage location of the auxiliary power cables.)
Figure 5-96  Installing a PCIe card
8.Close the...

PCI card
This section describes replacing a PCI card.
Removing a PCI card
1.Disconnect power from the workstation (see Predisassembly procedures on page 73).
2.Remove the side access panel (see 
Removing the side access panel on page 75).
3.Remove the expansion card support (see 
Removing the expansion card support on page 77).
4.Remove all cables connected to the PCI card.
5.Raise the rear retention clamp by lifting the metal bar or the green lever as shown in the following
figure 
.
Figure 5-97...

Installing a PCI card
1.Disconnect power from the workstation (see Predisassembly procedures on page 73).
2.Remove the side access panel (see 
Removing the side access panel on page 75).
3.Remove the expansion card support (see 
Removing the expansion card support on page 77).
4.Raise the rear retention clamp by lifting the metal bar or the green lever as shown in the following
figure 
.
Figure 5-98  Removing the slot cover
5.Lift the slot cover straight up to remove it from the chassis 2.
TIP:Grasp the...

6.Align the PCI card keyway with the slot key, and then firmly seat the card in the slot as shown in
the following figure 
.
Figure 5-99  Installing a PCI card
7.Close the expansion card retention clamp by rotating it downward 2. The retention clamp is
secured by the expansion card support.
NOTE:It is normal for the expansion card retention clamp to have a slight (5-10 degree) angle
when closed. If the angle is greater than this, open the clamp and ensure that all cards are properly
seated and all the...

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 73).
2.Disconnect power from the workstation (see 
Predisassembly procedures on page 73).
3.Remove the side access panel (see 
Removing the side access panel on page 75).
4.Remove the memory fans (see 
Removing the memory fans on page 136).
5.Remove the airflow guide (see 
Removing the airflow guide on page 76).
6.Slowly and evenly...

7.Disconnect the CPU heatsink fan cable from the system board  as shown in the following figure.
Figure 5-101  Disconnecting the heatsink fan cable
8.Lift the CPU heatsink out of the chassis 2.
9.Use alcohol and a soft cloth to clean the thermal interface residue from the CPU and the heatsink,
allowing the alcohol on the CPU and CPU heatsink to dry completely.
154 Chapter 5   Replacing components ENWW 

Installing the CPU heatsink
1.Perform one of the following tasks:
●If you are reusing the original heatsink, apply thermal compound to the center of the CPU top
surface.
●If you are using a new CPU heatsink, do not apply thermal compound to the CPU because
the new heatsink already has thermal compound applied to the heatsink surface. Instead,
remove the thermal compound protective liner from the bottom of the new heatsink.
2.Align the four mounting screws with the mounting holes in the system board and...

5.Connect the CPU heatsink fan connector to the system board.
Figure 5-102  Connecting the heatsink fan cable
6.Reinstall all removed components and reconnect any cables that have been disconnected.
156 Chapter 5   Replacing components ENWW 

CPU
This section describes how to remove and install a CPU.
Removing a CPU
1.Disconnect power from the workstation (see Predisassembly procedures on page 73).
2.Remove the side access panel (see 
Removing the side access panel on page 75).
3.Remove the expansion card support (see 
Removing the expansion card support on page 77).
4.Remove the airflow guide (see 
Removing the airflow guide on page 76).
5.Remove the memory fan assembly (see 
Removing the memory fans on page 136).
6.Remove the CPU heatsink...

Installing a CPU
NOTE:HP recommends that you do not swap processors (CPUs) from one system board to another.
If installing a second CPU, it must be of the same type as the first CPU.
1.Disconnect power from the workstation (see Predisassembly procedures on page 73).
2.Remove the side access panel (see 
Removing the side access panel on page 75).
3.Remove the airflow guide (see 
Removing the airflow guide on page 76).
4.Remove the memory fan assembly (see 
Removing the memory fans on page 136).
5.Remove...