Recently our Royal P50 electric pencil sharpener was used absent-mindedly by one of our children. The eraser end went in first. Whoops! It broke off and jammed in the sharpener. (As an aside, I am embarrassed to even admit that we own an electric pencil sharpener. I think a manual pencil sharpener ought to work just fine. In fact, I think that it is due to pencil sharpeners that whittling has gone out of style, and young boys are no longer allowed to carry jacknives.)
Anyway, the Royal P50 is made by Royal Consumer Information Products, (formerly Royal Typewrite Company) and is a subsidiary of Olivetti Tecnost S.p.A. However, you won't find the P50 on their site. Only the P10. I think that this is because (1) they are embarassed by the quality of the P50 (see the Amazon reviews for it) and (2) with only 22 employees they are too busy making products to update their website.
Anyway, the first step to open up the P50 is to unplug it. Hey, I don't want to be responsible for any gruesome tales of pencil sharpener gore.
Next, turn it upside down and take off the black circular stickers that are covering up the screws. One of these was hard to get off. I tried various approaches. Finally I smeared it with tuna and the cat gnawed it off. Afterward I could see the two screws that need removing.
Don't remove the little screw next to the cord. Once the screws are out, gently separate the innards from the case:
You'll end up with just the business part of the sharpener.
Then, you might be curious what is underneath the little screw on top of the unit. I know I was.
Well, it just houses the switch. No need to open that part.
Instead, loosen the two large screws to gain access to the chamber of secrets.
That gave me enough access to pull out the bits of debris that needed removing. After that, reassemble and have a celebratory beverage.
Update June 2016: Please check out Disassembly of the Royal P80 Electric Pencil Sharpener over at A Little Noise for P80 instructions.