HP Z400 HP Z400 Workstation Maintenance and Service Guide - Page 141

Caution,

Page 141 highlights

CAUTION: Do not overtighten the heatsink screws. If you overtighten them, you might strip the threads in the system board tray. Do not fully tighten one screw and then move on to the next. Instead, tighten all screws a little at a time, ensuring that the CPU remains level. 7. Tighten all screws partially so the CPU heatsink remains level. 8. Tighten each set of diagonally opposed screws a little at a time to 6 in.-lbs. of torque. 9. Connect the CPU heatsink fan connector to the system board. Figure 5-70 Connecting the heatsink fan cable ENWW Removing and installing components 129

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CAUTION:
Do not overtighten the heatsink screws. If you overtighten them, you might strip the
threads in the system board tray.
Do
not
fully tighten one screw and then move on to the next. Instead, tighten all screws a little at
a time, ensuring that the CPU remains level.
7.
Tighten all screws partially so the CPU heatsink remains level.
8.
Tighten each set of diagonally opposed screws a little at a time to 6 in.-lbs. of torque.
9.
Connect the CPU heatsink fan connector to the system board.
Figure 5-70
Connecting the heatsink fan cable
ENWW
Removing and installing components
129