Scott: Doctor, I've seen the captain feverish, sick, drunk, delirious, terrified, overjoyed, boiling mad... But up to now, I have never seen him red-faced with hysteria.
Kang: Kirk, my ship is disabled. I claim yours. You are now prisoners of the Klingon empire against which you have committed a wanton act of war!
Answer: After causing Norman to overload, all of the other androids shut down. The same could be said for the androids on the Enterprise.