User:Opersing2688/ENES-100/Project 0:

Laser Printer Project

1sfoerster

Connor's Wikiversity Page

Week1 Narrative
The first week comprised mostly of me removing plastic panels and observing the printer while it printed diagnostic pages. By printing test pages, I was able to see how the paper entered and existed the printer. I also read how laser printers work on Wikipedia.  File:LaserPrinter.JPG|HP LaserJet 4200n Printer

File:HPLaserJetLaser.JPG|The fuse roller of the printer 

Week2 Narrative
I wanted to take off metal side panel of the printer to see what was behind it. There were many screws holding it in place. I unscrewed some and eventually it came off. I also unscrewed the bar holding the fan in it's compartment. After the side panel was removed, the printer wouldn't print diagnostic tests. I noticed that a wire wasn't plugged in so I plugged it in and the error message was gone. However, when the test print was attempted, the paper got jammed. A pin fell off of the cartridge so I thought that must be why the error message appeared. After playing around with the cartridge for awhile, it finally started printing again. But this time, the pages came out completely black.

Week3 Narrative
The first thing I discovered this week is that what I thought was the laser and the fuse roller is actually only the fuse roller. The laser is actually on the top of the printer instead of the side. I took the plate covering the laser off and examined the laser.

A test print caused a paper jam. The paper got caught before it entered the fuse roller so the paper ink did not bond with the paper and thus was powdery. A second test resulted in the same thing. I then took a bar off the fuse roller to see if I could see the rollers more clearly. It didn't result in anything different. I attempted to print another test page but it didn't work because the control panel said, "install cartridge".