I have an LP2844 that seems to take a print job just fine, but ignores it, I don't get any errors, and no change to the LED on the printer to indicate that it got the message.
The diagnostic prints out when I hold the button down at start up, so I knew the print head and things worked.
I managed to find that you could use the button to switch the printer to EPL1/Line Mode, and when I did that, all the text I send to it prints out, but none of the drivers are written for this anymore.
So I know the print head works, the USB cable works, and so on, because I can print in line mode, but when I switch it back to Page mode, it stops responding to commands.
I tried to do a factory reset as described on Zebra website, but when I hold down the feed button, it just keeps feeding, and never does the blinking that is described there.
Has anyone seen anything like this.