We noticed that the replacement board had and older firmware installed. When users reported the 49 errors on 4 printers a couple of weeks ago I installed the 2007 firmware image on them.
I have been very good at keeping up with updating firmware, so all my HP printers have the latest image. In two weeks, none of these printers have had the problem.
The problem went away when he drained his print queue.
for anyone with 49.4C errors on a HP LJ4250: I downloaded the newest firmware from since the we have had no more problems. So as soon as the next printer has this, or pcl error messages, or in fact any other communication error, then the first thing that we'll do is a firmware update.
Other causes include poor quality parallel cables, poor connections, or homegrown applications.
On rareoccasions, the formatter is at fault, which is usually indicated by a 79 Service Error.1.
This type of error can be caused by invalid print commands, corrupt data, or invalid operations.
In some cases, electrical noise in the cable can corrupt data during transmission to the printer.If the error persists, replace the firmware DIMM.13. We changed the drivers to PCL6 whenever these problems occurred. Continue holding the green (Select) button until the Ready, Data, and Attention lights flash once, and then stay on steady. 49 errors in Color Laser Jet 5500 printers are often caused by the Jet Direct 615N card failing.49PRINTER ERROR Description 49 errors are generally communication errors or file related issues and can usually be resolved by following the steps below: Action Turn the printer off, and then turn it on again. Release the (Select) button when the Ready, Data, and Attention light are on steady. For information on getting a replacement for a bad 615N click on my name and email me, an even better way is to click on the crossed tools and you can see an email link in my profile, that link has a readable address that you can send to using your mail program.If the 49 error returns turn the power off, unplug the power cable, disconnect all network cables, and remove the HP Jetdirect card (or any third-party devices), if installed. Please make sure you give me a good email address to respond to, a few times now people have emailed me and the return address did not work. As many pints as this bug has caused me to consume.Wait at least 30 seconds before plugging the printer back in directly to a wall outlet. Thank-you for directing me to the PS pass through option; that solved a lingering problem of random crashes when printing PS docs via the HP PS drivers. Thank-you HP and Adobe for your devotion to this long-lasting, broad reaching bug and delivering a solution.The link above provides you with the fw-update file and a description of how to apply it, either over the network with the browser or locally over LPT1.