Common Error Codes and Problems with the HP LaserJet 4000, 4050, 4100


In this article I’ll discuss the variety of common service related issues in the early HP 4000 series printer family. You may be wondering why I’m focusing on these older printer models.  In my opinion, next to the HP 4 and 5 series, the HP 4000 series is one of the best lines of printers ever made. Many of these machines are still in the field and, due to age, some of these problems are becoming more frequent. Because these machines have become “more repairable” over the last year since the price on the parts has drastically dropped and the cost of the toner cartridges have gotten lower, they are some of the cheapest machines to run given the cost per page. So for your customers who are thinking about how they can get the most for their money, these machines offer what they are looking for.

NOTE:  Almost all the part numbers listed in this article are for the 4000 series. The 4100 uses different part numbers for the feed rollers, pick up and feed assemblies, and the paper size board is different on some of the models given the extra feed trays. Get the 4100 printer specific part numbers here

Let’s take a look, then, at some of the common errors.  Continue Reading