Keyboard And Keyboard Backlight; Abnormal Operation Of Side Keys - Lenovo A516 Service Manual

Repair Manual of Lenovo A516 Mobile Phone

3.5 Keyboard and keyboard backlight

3.5.1 Abnormal operation of side keys

Check whether there are conditions like cold
solder joint and short circuit on keyboard
FPC ? Whether it is ok after re-welding?
Check whether there are conditions like cold
solder joint and missing device on the circuit
device of side keys R1704,R1707,R1708
Abnormal side key
N
N
Replace side keys FPC
N
Replace U1101
Y
OK OK
Y
19
OK