Key Has No Effect - Lenovo X2 Service Manual

3.8 Key has no effect

Check whether the connection
status between the key FPC and the
motherboard connector is normal,
and
whether the phone is working
normal.
Press the key button, make
sure whether the key signal
line short to ground net.
Key has no effect
reconnect the connector
N
Y
Change CPU chip U1001
Y
OK
Replace the
N
key FPC
19