Fax machines are complicated pieces of equipment with delicate sensors, motors and finely calibrated moving parts. As much as you might want to kick your office fax machine when there's a paper jam, there are other solutions. Here are some troubleshooting tips for the most common fax problems: image quality, paper jams and connectivity issues.
The most common image quality problems with faxes are pages that come out too dark, too light or are unreadable due to streaks, splotches and spots. For dark and light pages, it could be as simple as changing the darkness or density setting on the receiving machine [source: FineStar Imaging]. If the receiver does a test print and the page comes out clean, then the problem is most likely with the sender's machine.
The sender should open up the document feed area of the fax machine and clean all the surfaces and moving parts with a slightly damp cloth [source: Sands Office Equipment, Inc.] If the fax machine is one of those all-in-one gadgets that doubles as a scanner and copier, clean off the scanner glass as well with a little glass cleaner