I've found small crack on my ThinkPad 13 keyboard.
The crack is bellow the control key of right hand side.
I've replaced by myself.Before replaceing, you shoud find the FRU no.
システムサービス部品Fru no. of this keyboard is:
https://support.lenovo.com/us/ja/solutions/pd100192
ThinkPad 13 Bell(Windows) Service Parts Listing
https://download.lenovo.com/parts/ThinkPad/tp13_frubom_20160322.pdf
- 00PA411, TH-KBD,US,CHY
- 00PA493, TH-KBD,US,DFN
When I've received the keyborad, I replaced it with the hardware maintenace manual of ThinkPad 13
Thinkpad 13ハードウェア保守マニュアル
https://download.lenovo.com/mobilesjp/sp40k22761_01_j.pdf