Attempting to print labels from a Monarch 9855 printer and receiving error message: "Print Head error 768." Printer was working fine as of last Friday. We have other Monarch 9855 printers that are on other computers that are working. The computers are laptops running Windows XP and connected to network wirelessly.

This is the error code stating that there are more than 8 print elements faulty and requires replacement.

However if the cabel to printhead is not installed correctly this can also give the same error - check it is fully connected.

If the printer display just shows Ready, but doesn't print, there could be a few things wrong.

1 - no data is going to the printer
2 - data is going to the printer, but it is not the printer's native language
3 - cable connectivity issues
4 - wrong cable is being used
5 - if wireless, data is not going to the correct IP

If using a 3rd party application, make sure that you've chosen the correct Monarch printer, as well as printing to the correct port. Sometime people print to LPT instead of Serial, as an example.

If using 3rd party drivers, make sure of the same thing.

To see if the printer actually works, press both of the arrows on the display, at the same time, after the printer is at the ready screen. As long as have the printer configured correctly (ribbon, supply type, etc.), the printer should print out a couple of labels.

can you try a serial connection, what type of operating system are you using?

Your software wouldn't care whether it's a 9835 or a 9855. It can't even tell the difference. Are your supply settings and communications settings the same for both printers? Any error messages on the display when you print?

As it turns out, a good cleaning took care of the problem. I suspect the sensor bar was dirty so it could not detect the black line on the back of the labels for alignment.

Thanks anyway!

Mike Sunderland

You have a format problem. Something isn't correct in your mpcl code.
Error 400 - "The character immediately following { is invalid or not an ASCII character."

101 : The format referenced by batch isn't in memory. (Try rebooting printer or closing/opening software)
005: Supply width is invalid. (Check your format data)

When you're sending data to the printer you're sending a command that is telling the printer you're NOT using a ribbon. When the printer receives the data it's shutting off the ribbon. Check your software.
You should be set for THERMAL TRANSFER.(RIBBON)
THERMAL DIRECT Means NO RIBBON

sounds like your printhead is bad. ty running a print test by havind eaither tags or labels in the supply. then clear the machine and press and hod down BOTH arrow buttons at the same tiem and then release. a print test will apear and carefully look for the line that reads BAD DOTS ;
if the value is greater than 000 than the prinithead needs to be replaced

My brother dcp tells me
unable to print check troubleshooing and maintenance chapters.
I have done this and cleaned the printer, it also tells me ink jets empty, they are all new ones.
Driving me mad any suggestions so I can get my sanity back.

Thanks
Denise