Troubleshooting a 49 Service Error in the HP CM4540 Enterprise Color Laser


A few days ago I was called out to work on a HP CM4540 that was getting a 49 Service Error. The customer called me and explained that they had already tried to clear the error by turning the machine off then back on but the problem came back. I advised the customer to remove the communication cable and reboot the machine to see if the problem went away. Of course, it did, so I told the customer to delete all print jobs in the print queue and then try to print something simple like a windows test page. The next day I received another call that the problem was back and now would not go away. Continue reading

58.4 Power Supply Error in the HP LaserJet M5025 Multifunction


I was recently called out to work on one of  a HP LaserJet M5025 multifunction printer (MFP) the other day, which had the 58.4 error happen over the weekend. When the customer came in Monday morning the error was on the screen.  I recommend these steps to troubleshoot:

  1. Turn the machine off
  2.  Make sure it is not plugged into a surge arrest, power strip, or battery back up
  3. Let it sit 20 to 30 minutes unplugged
  4. Plug it back in and try again.

If the problem still occurs then the next step is to Continue reading

What To Do When Paper is Jamming in the Left side of an HP 9040 or 9050 Printer


I get lots of calls on the HP 9040 and 9050 models for random paper jams in the machine. Often times the customer informs me that the problems tend to happen first thing in the morning. After about a half hour fighting with the machine it starts working again, but with  random paper jams every so often.  The customer also notes that many times, when they get a paper jam, there are several sheets of paper stuck all over the machine so they have a hard time telling where the jam actually occurred.

The HP 9040 and 9050 machines are very sensitive in their timing. If the paper gets to certain parts of the machine a hair late it can result in a jam error (I’ve often wondered why HP made these machines so time sensitive). Anyway, I’ve seen surprisingly few problems with the paper pick up assembly other than broken paper sensor actuators. The feed rollers in these machines are well designed with plenty of rubber so they hardly ever cause feed issues.

Most of the paper jam problems are in the fusing unit.

The fuser pressure roller develops flat spots, which causes toner to build up on the hot roller and leads to paper sticking to and jamming Continue reading

What is the ideal life span for your devices?


Expiration-DateHistorically, businesses have purchased printers and used them until they expire, which can take 10 years or more in some cases (we know some of you still have Optra S devices from 1997 out there!). Yet, these same businesses are leasing other output devices, such as copiers and fax machines, and replacing them every three years. Why is there such a big difference in life-cycle strategy for such similar technologies?

Is it because copiers are thought to be inherently less reliable and require replacement much more frequently?  Traditional copiers may have been less reliable, but the migration to digital printing engines brings them into a class that is much closer to printers, simply with added scanning mechanics on top. For example, Lexmark’s multifunction printers (MFPs), which can be used as digital copiers, are built upon the same reliable engines as our award-winning printers. So, the reliability of the mechanics in the MFP is similar to the printers, which may be used for many years. With that in mind, the recommended life span should be similar between MFPs and printers.

Several years ago, Lexmark engaged in a study with a large corporation to determine how often it should replace its printers.  [Read the full article here]