Lenovo 90H9, Hardware Maintenance Manual

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Step 5. Reinstall the computer cover:
a. Align the cover with the guide track on the computer case, then slide
the cover in.
b. Push the cover till it’s lock position.
c. Push the cover lock to lock position.
Removing the computer cover ii
Attention:
• Turn off the computer and wait 3 to 5 minutes to let it cool down before
removing the cover.
• For this procedure, it helps to lay the computer on a flat, stable surface.
To remove the computer cover ii:
Step 1. Remove any media (disks, CDs, or memory cards) from the drives, shut
down the computer, and turn off 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 “Locating connectors on the rear of the
computer”.
Step 4. Remove the 2 screws that secure the computer cover to the chassis.
Step 5. Press the left side of the cover,
1 then slide the computer cover out. 2
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Lenovo Legion Y720T Hardware Maintenance Manual