Lenovo S40-40 Lenovo S40-40 Hardware Maintenance Manual - Page 47

Replacingtheheat-sink

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Step 7. Disconnect the speaker cables from the connector on the motherboard. Step 8. Remove the four screws that secure the speaker system to the chassis, then lift up the speaker system to remove it. Step 9. To install the new speaker system: a. Place the new speaker system into position, then secure it with four screws. b. Connect the new speaker cables to the connector on the motherboard. Step 10. Reattach the motherboard cover, hinge fixing bracket, back cover and stand. Replacing the heat-sink Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches or other damage. To replace the heat-sink: Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Unplug all power cords from electrical outlets. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. Refer to "Left and right view" and "Rear view" for help with locating the various connectors. Remove the stand and back cover. Refer to "Removing the stand and back cover". Remove the hinge fixing bracket. Refer to "Removing the hinge fixing bracket". Remove the motherboard cover. Refer to "Removing the motherboard cover". Chapter 8. Replacing hardware 41

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Step 7.
Disconnect the speaker cables from the connector on the motherboard.
Step 8.
Remove the four screws that secure the speaker system to the chassis, then lift up the speaker
system to remove it.
Step 9.
To install the new speaker system:
a.
Place the new speaker system into position, then secure it with four screws.
b.
Connect the new speaker cables to the connector on the motherboard.
Step 10. Reattach the motherboard cover, hinge fixing bracket, back cover and stand.
Replacingtheheat-sink
Note:
Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Note:
It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo
recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches
or other damage.
Toreplacetheheat-sink:
Step 1.
Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating
system, and turn off the computer and all attached devices.
Step 2.
Unplug all power cords from electrical outlets.
Step 3.
Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to “Left and right view”
and “Rear view” for help with locating the various connectors.
Step 4.
Remove the stand and back cover. Refer to “Removing the stand and back cover”.
Step 5.
Remove the hinge fixing bracket. Refer to “Removing the hinge fixing bracket”.
Step 6.
Remove the motherboard cover. Refer to “Removing the motherboard cover”.
Chapter 8
.
Replacing hardware
41