HP rp8420 HP 9000 rp8420 Server - User Service Guide, Fifth Edition - Page 143

ZIF Socket Lock/Unlock Peep Hole Location

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7. Ensure that the CPU remains level for good connectivity to the ZIF socket. Using the 2.5 mm hex driver, turn the ZIF socket lock screw one half turn clockwise to lock the CPU into place. Rotate the fan to gain access to the ZIF socket peep hole location. See Figure 6-33 (page 143). NOTE: While locking the ZIF socket, observe the CPU and note that the CPU shifts slightly toward the right. Figure 6-33 ZIF Socket Lock/Unlock Peep Hole Location 8. Push the load sequencer away from the fan. 9. Tighten the four CPU module screws in an X pattern, turning each screw two to three turns, until secure. NOTE: The processor screws do not need to be torqued. The processor will be properly secured when the screws reach the bottom on the socket frame. Push down firmly on the four CPU load screws while tightening until the threads engage into the socket frame. 10. Alternately tighten the two power pod screws until secured. Ensure that the entire CPU module is seated level in the cell board. NOTE: Do not overtighten the screws. Damage may occur to the cell board. 11. Connect the Turbocooler fan cable to the cell board connector. 12. Route the CPU power cable, left or right, to the cell board connector. 13. Connect the CPU power cable to the cell board connector. NOTE: Due to space constraints, it may be necessary to use a tool to assist with inserting CPU 0 and CPU 2 power pod and Turbocooler cables into the cell board connectors. 14. Install remaining CPUs, keeping load order in mind. Removing and Replacing a Central Processing Unit 143

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7.
Ensure that the CPU remains level for good connectivity to the ZIF socket. Using the 2.5
mm hex driver, turn the ZIF socket lock screw one half turn clockwise to lock the CPU into
place.
Rotate the fan to gain access to the ZIF socket peep hole location. See
Figure 6-33 (page 143)
.
NOTE:
While locking the ZIF socket, observe the CPU and note that the CPU shifts slightly
toward the right.
Figure 6-33 ZIF Socket Lock/Unlock Peep Hole Location
8.
Push the load sequencer away from the fan.
9.
Tighten the four CPU module screws in an X pattern, turning each screw two to three turns,
until secure.
NOTE:
The processor screws do not need to be torqued. The processor will be properly
secured when the screws reach the bottom on the socket frame.
Push down firmly on the four CPU load screws while tightening until the threads engage
into the socket frame.
10.
Alternately tighten the two power pod screws until secured. Ensure that the entire CPU
module is seated level in the cell board.
NOTE:
Do not overtighten the screws. Damage may occur to the cell board.
11.
Connect the Turbocooler fan cable to the cell board connector.
12.
Route the CPU power cable, left or right, to the cell board connector.
13.
Connect the CPU power cable to the cell board connector.
NOTE:
Due to space constraints, it may be necessary to use a tool to assist with inserting
CPU 0 and CPU 2 power pod and Turbocooler cables into the cell board connectors.
14.
Install remaining CPUs, keeping load order in mind.
Removing and Replacing a Central Processing Unit
143