Hello everyone, today while calibrating esc during the process my all esc get into the programming mode and hence motor does not spin.
Observed one thing that, while keeping throttle to 0 and pressing 1 and 4 button of kk2.1 when I move stick to 100 motor spin    
Pleas some one help me with this 

After esc calibration U need arm kk2 board then only motors spin when you throttle to 100

You will find orange light and "armed" on kk2 screen when kk2 board armed.

to arm the board, keep throttle to zero and full RIGHT rudder. To disarm, keep throttle to zero and full LEFT rudder

Thank you ramarao Aniket successfully done .!

D calibration s done fr al 3 motors except 1.i m hearing 2 quick beeps den lowering d throttle aftr whic I hear 3 beeps den 1 long beep.....in al 3 d same but not in 1 motor.I have skywalker quaatro n kk 2.1

Try again... Try again..... Try again.........
Move the throttle stick swiftly down after the initialization beeps and calibration beeps are heard .
And if throttle calibration from KK2 board fails, calibrate each ESC manually - or at least the ESC which shows calibration problems .

@neil, please don't use sms language, use full words instead.

and spend some time read Forum rules before posting.
http://www.rcindia.org/rc-india-forum/the-rc-india-gems/