My print job stopped in the middle with the following message displayed on my Mac screen: "Unable to write print data; broken pipe". What's going on and how do I fix it? My system is wireless.

Screenshot it,Upload it to a computer and print.

You might try sending your messages to a fax # maybe you can copy them that way.

Critical firmware error. Can be caused by invalid print commands, corrupt data, invalid operations or even electrical noise in the cable.

Turn off the printer, then turn it on.
Press Stop to clear the print job from memory.
Turn off and back on.
Print a document from a different software program.
If that document prints, go back to the first program that failed and print a different file.
If the error comes back, that file is corrupt.
If the message persists with different programs and print jobs have the formatter replaced.

Download Samsung's "Universal Print Driver" for Windows here: http://v.gd/eeigh2
Download Samsung's "Universal Print Driver" for Mac here: http://v.gd/XFZvKT
Download Samsung's "Universal Print Driver" for Linux here: http://v.gd/pqCEPI

Hi there !

I am here to help you to solve your problem.

I believe your print spooler service stop running or your spooler is confused pending some queue at the print spooler service.

To resolve this, follow this procedures.

Go to START MENU
Choose RUN (For Windows XP) or Choose Commamd prompt, right click mouse and run as administrator ( For Window vista and windows 7)
Type the letter "cmd"
Type the word "net stop spooler"
Exit
Go to C: drive
Choose to Windows Folder
Click show content
Choose system32 folder
Choose spool folder
Choose printer
And delete all printing jobs pending
Again go back to CMD window and type the word "net start spooler"
Restart your computer and must also turn off your printer and then switch it on.

It will work fine right now
I hope it helps you

Well every advice is the same except a little altered (use a warm cotton swab to clean inside machine and on print head channels) but then it says if possible replace print head but honestly this has become a primitive Machine for turning humans into corpses - buy a new one.

Error 49 relates to the print head drive voltage. It may just need the flat ribbon cables that connect the head to the main pcb reseating, but equally it may need the print head replacing (most likely).
An outside chance that the main pcb will need replacing.

In theory, all of these jobs are a task for an engineer. Brother UK (0870 830 400) can pass you on to a repair agent.

Hi, sorry to hear you are having problems,
OK, first of all, you can stop worrying about solution #3, this printer is a USB or Parallel, there is no networking on this printer so no possibility of an AppleTalk connection.
You say you have downloaded the latest version of the driver from the Samsung website.
And, the Mac is connected DIRECTLY to the printer via USB.... ( It won't work if it's connected to a PC and then shared.. well it might work but I have not been able to make this kind of connection work...)
Well, if this is the case and you are unable to print while the PC prints fine, I expect that it is over the Parallel port or do you plug and un-plug between the Mac and PC...
It might be that the printer needs to reset after switching between the Mac and the PC, Shut off the Printer, I mean really, shut it down, unplug it for 30 seconds then connect it to the Mac and restart the Mac and start up the printer....
If it still does not work, do you have another Mac you can connect to for testing?
Also, the first test should not be FireFox, open the Text Edit app and type ( TEST ) and just print that...
Give that a whirl..

your mac should tell you what do to. But go to where your printer is listed, OR delete your printer, then re-install. go through the motions.