Securitech active 5 reset

Hi

I had my main electric off for a few days and when i switch it on the alarm goes off. I tried the code given to me by the estate agent aswel as 1234 and 7890 but nothing works. I have taken the fuse out to disable the whole system. I have read in the engineer manual the following:

Remove all power from the cotrol panel, fit default link CN6, reapply power remove default link CN6.

I cannot find a CN6. Please see the photo attached. Can anybody help?

Thanks

It's under the keypad you have to unplug it !
Right hand side of pcb link 2

Thanks for the reply and the attachment. I cant see anything that says CN6. Where exactly am I looking and when I find what I am looking for what do I do?

Thanks

Two pins ( link2 ) power down panel short the pins together ( screwdriver blade) and power up with pins shorted , remove short on pins plug keypad back on enter 1234 to stop sounder