Why is my K-Slim only brewing a partial cup of coffee?

A partial cup can be caused by a clogged exit needle, a dirty K-Cup pod holder, or the coffee maker needing to be descaled. To attempt a fix, power off the coffee maker, then press and hold the brew button and 12oz button for 5 seconds until water starts dispensing, then release and let the water purge. If you have repeated the descale procedure two times and the problem persists, contact Customer Service. (Page 4)