How can I repair an HP laser printer?

In 1984, drawing upon its experience with the Lisa, Apple next launched the Macintosh. Its debut was announced by a single national broadcast of the now famous US$1.5 million television commercial, "1984", based on George Orwell's novel Nineteen Eighty-Four. The commercial was directed by Ridley Scott and aired during Super Bowl XVIII on January 22, 1984. Jobs' intention with the ad was to equate Big Brother with the IBM PC, and a nameless female action hero portrayed by Anya Major with the Macintosh. While it initially sold well, follow-up sales were not particularly strong. The machine's fortunes changed with the introduction of the LaserWriter, the first laser printer to be offered at a reasonable price point, and PageMaker, an early desktop publishing (DTP) package. The Mac was particularly powerful in this market due to its advanced graphics capabilities, a side-effect of the GUI, and it can be said that the combination of these three products are responsible for the creation of the DTP market. As DTP became widespread, Apple's sales reached a series of new highs.