Lenovo ThinkSystem ST45 V3 - Page 98

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CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
Attention:
• Read
“Installation Guidelines” on page 29 and “Safety inspection checklist” on page 30 to ensure that you
work safely.
• Power off the server and peripheral devices and disconnect the power cords and all external cables. See
“Power off the server” on page 34.
• Remove any locking device that secures the server, such as a Kensington lock or a padlock.
• Place the server on its side with the cover up.
Procedure
Step 1. Make preparation for this task.
a. Remove the server cover. See
“Remove the server cover” on page 135.
Attention: The heat sink and processor could be very hot. To avoid burning yourself, wait for a
few minutes after turning off the server before you remove the server cover.
b. If applicable, remove the ODD+bay 2 drive cage assembly (see
“Remove an optical drive cage”
on page 78
) or remove the bay 2+bay 3 drive cage assembly (see “Remove the drive cage (bay
3)” on page 67
).
Step 2. Disconnect the heat sink and fan module cable from the system board. See
Chapter 6 “Internal
cable routing” on page 145
.
Step 3. Remove the heat sink and fan module.
a.
& Loosen screw 1 and 2: First, partially loosen screw 1; then, fully loosen screw 2. Finally,
fully loosen screw 1.
b.
& Loosen screw 3 and 4: First, partially loosen screw 3; then, fully loosen screw 4. Finally,
fully loosen screw 3.
c.
Lift evenly and remove the heat sink and fan module from the server.
Notes:
1. Gently remove the four screws to avoid any possible damage to the system board.
2. Always keep the four screws attached to the heat sink and fan module.
3. Do not touch the thermal grease while handling the heat sink and fan module.
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ThinkSystem ST45 V3 User Guide