11
Chapter 2. Hardware Setup
SB101-LB User Manual
Step 5
Installing the heatsink on top of the processor.
NOTE
The processor heatsink for CPU1 and CPU2 is different.. FXXCA91X91HS is for CPU1,
while FXXEA91X91HS2 is for CPU2. Mislocating the heatsink will cause serious thermal
damage.
(5a)
If present, remove the protective film covering the thermal interface
material on the bottom side of the heatsink (see letter A).
(5b)
Align the heatsink fins to the front and back of the chassis for
correct airflow. The airflow goes from front-to-back of the chassis (see
letter B).
(5c)
Each heatsink has four captive fasteners and should be tightened
diagonally using the following procedure:
(5c-1) Using a #2 Phillips* screwdriver, start with screw 1 and
engage screw threads by giving it two rotations and stop (see
letter C) (Do not fully tighten).
(5c-2) Proceed to screw 2 and engage screw threads by giving it
two rotations and stop (see letter D). Similarly, engage screws 3
and 4.
(5c-3) Repeat steps C and D by giving each screw two rotations
each time until each screw is lightly tightened up to a maximum
of 8 inch-lbs torque (see letter E).
C
Processo
r
Socket
AIRFLO
W
Chassis Front
2
3
1
4
A
B
TIM
D
CAUTION:
Do not over-tighten fasteners.
E
