Micromax Q427+ - Reset is not working; Reset Troubleshooting

Q427+ L3 Service Manual
21.Vibrator is not working:
Solution:
 Flash the handset with latest SW
 Check if the vibrator is failure then Re-Solder Vibrator or change it
 Check the Main FPC Assembly Quality ,if not ,Re-Assembly it or change it.
 Check the FPC connector soldering Quality ,if not ,Re-sold it or change it.
 Check the CPU work normally or not. Re-Solder the CPU or change it
Vibrator
FPC
connector
Main FPC
CPU