Lenovo IdeaCentre Q180 - Manual (Page 38)

Attention: Place the CPU heatsink upside down on a flat surface to prevent thermal grease from
contaminating other components.
Attention: Use an alcohol pad to wipe the thermal grease off the heatsink and CPU.
Step 8. Use a thermal grease syringe to place 5 drops of grease on the top of the microprocessor. Each
drop of grease should be 0.03ml (3 tick marks on the grease syringe).
Step 9. Line up the new heatsink then secure it to the motherboard with the screws.
Step 10. Reattach the computer cover.
Replacing the motherboard
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 motherboard:
Step 1. Remove any media (disks, CDs, 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 computer cover. Refer to “Removing the computer cover”.
Step 5. Remove the hard disk drive. Refer to “Replacing the hard disk drive”.
Step 6. Remove the memory module. Refer to “Replacing a memory module”.
Step 7. Remove the WLAN card. Refer to “Replacing the WLAN card”.
Step 8. Remove the power button. Refer to “Removing the power button”.
Step 9. Remove the CPU heatsink and system fan. Refer to “Replacing the CPU heatsink and system fan”.
Step 10. Remove all the cables connected to the motherboard.
Step 11. Remove the 3 screws that secure the motherboard to the chassis.
32 IdeaCentre Q180Hardware Maintenance Manual