ZM4 Plus Zebra printer will stop printing intermittently and will need to be rebooted before it starts to print the labels again. I was reading a little into this issue already and what I came across so far is someone stating that it maybe a bad mainboard with the printer itself.

SOURCE: Print Width Issue

the issue you are having is DPI related, when data is sent to the printer and rendered it is dot for dot, so a Z4M 203dpi printer has about 800dots on the printhead where your printer has about 1200dots on the printhead. so when your software prints to dot800 thinking it is the edge of the label it is infact at 60%. there sould be an option in the software to configure around this. if not the is an option in the printer to convert DPI setting ie 150>300 or 100>200 and so on. but i don't thing you can make a 300dpi print as 203dpi


best of luck

SOURCE: Zebra S4M prints one label then goes to flashing pause light.

most likely it is a printer driver issue. There's 2 drivers, one for 200dpi and one for 300dpi. Use the one for 200dpi. It could also be the label setting is incorrect. Try running a calibration.

SOURCE: Zebra S4M label printer

Check the drive belt. It might be missing a tooth if the printer is older. I can assist if you want to check this.

SOURCE: Sent too many labels to printer - need to reset

As the previous expert has stated, with the printer paused, press the cancel key to cancel the job. One thing to note, is depending on how your software sends the print jobs, you may say print 1000 labels, but the software sends it one at a time, so basically you have 1000 print jobs in the printer. If you pause the printer, press and hold the cancel key. Hold it for about 2 mins. This should clear the buffer.

SOURCE: Label Printing stuck in queues

Yes that is correct the Z4M is not supported any longer as they have reached End Of Life although parts are still available. The problem will be because the printer hasn't got enough memory, the Z4M uses flash RAM installed on the Main Logic Board. These might not be readilly available, another thing to use would be a Print Buffer. You should still be able to get them. The idea is to control the amount of data that is flowing to the printer, if the internal buffer fills up it will corrupt the data and a reboot is required.