Lenovo Horizon 2e Table PC - Manual (Page 42)

Step 6. Remove the two screws that secure the converter board to the rear cover.
Step 7. Disconnect the two cables from the converter board.
Step 8. Lift up the converter board to remove it. 1
Step 9. To install the new converter board:
a. Connect the two cables to the new converter board.
b. Line up the holes in the new converter board with the mounting holes on the rear cover and
secure the converter to the rear cover with the screws.
c. Reconnect the battery cable to the motherboard.
Step 10. Reattach the rear cover and secure it with the screws.
Replacing the power switch board
Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover.
To replace the power switch board:
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 rear cover. Refer to "Removing the rear cover".
Step 5. Disconnect the battery power cable from the connector on the motherboard.
36 Lenovo HORIZON 2e All-In-One PC Hardware Maintenance Manual