Lenovo ThinkPad 10 Hardware Maintenance Manual page 56

Lift up the upper-right corner of the back cover assembly, and then slide the back cover assembly to the
left-upper corner to release the back cover assembly.
13
12
Detach the built-in battery connector.
14
Note: Before removing any further FRU, ensure that the built-in battery connector is detached.
50
Hardware Maintenance Manual