Special Note for 450C and 430's:
If after loading a roll of paper and printing a print, the ALIGN MEDIA light comes on and won't quit...but your media really doesn't need aligning, it is probably time to put a couple drops of lubricating oil on the silver rail that the carriage rides on. I've seen this error twice recently. It is often caused by increased resistance as the carriage rides left to right...these machines are very sensitive to the rails getting dry and causing some drag...it is easy and cheap...give it a try. You can use any "tri-flow" type of oil or plain old mineral oil.