Answer to "How to disassemble to get small piece of paper out of back."Before you disassemble, try this: make sure the printer is all assembled - no screws out - plug in the power, make sure there is paper in the tray, wait for the display to come up (if it is a jam, an error message will display), then press and hold the "AC" button until a sheet starts to feed, then let up on the button. The sheet with the small piece of paper that's causing the jam error (if that's what you're getting) will spit out. Problem solved - hopefully for you.
Answer to "How to clear paper jam behind fuser in Dell Printer 1355cn?"Ok, Dell was some help! Plug in the power, make sure there is paper in the tray. Press the "AC" button until the paper starts to feed. If there is a tiny bit of paper in the printer, it will (should - did for me) spit out the sheet that just fed through AND the tiny piece that's causing the error. Hope this helps!