Lenovo Horizon 2 27 Table PC Lenovo Horizon 2 27 All-In-One PC Hardware Mainte - Page 36

Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. 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 rear cover. Refer to "Removing the rear cover". Disconnect the battery cable from the connector on motherboard. Refer to "Replacing the battery". Remove the eight screws that secure the heat-sink module to the motherboard. Lift up the heat-sink module to remove it. Attention: Place the heat-sink upside down on a flat surface to prevent thermal grease from contaminating other components. Step 8. To install the new heat-sink module: a. Use an alcohol pad to wipe the thermal grease off the CPU. b. Line up the new heat-sink with mounting holes on the motherboard. c. Secure the new heat-sink to the motherboard with the eight screws. d. Attach the system fans to the new heat-sink and secure it with the screws. e. Reconnect the battery cable to the connector on the motherboard. Step 9. Reattach the rear cover. Replacing the speaker system Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover. To replace the speaker system: 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. 30 IdeaCentre Horizon 2 27 All-In-One PC Hardware Maintenance Manual