Keyboard And Keyboard Backlight; Keyboard Can't Work Properly - Lenovo S960 Service Manual

LENOVO S960 Cellphone Service Manual

3.5 Keyboard and keyboard backlight

The Power On button
can't work properly.
Check whether the main FPC
connectors are fastened properly, and
FPC is broken.
Is the Voltage to Ground at PWRKEY
test point TP1112 is far less than the
VBAT voltage?
Replace PMU U1301.
Side keys can't
work properly.
Check whether the solder joints of
the side key FPC are normal, and
FPC is broken. Do R1704, R1707
and R1303 have dry joint problems?
Replace motherboard.

3.5.1 Keyboard can't work properly.

Y
N
Y
N
Y
N
Page 19
Replace the main OK
FPC.
Replace the main
FPC.
OK
OK