Delay in printing labels with Zebra Z4M

If it's in pdf, then just print it with the printer driver

Hi, if is the vertical line, its the print head that need to be replaced,
try to clean the print head and try this to confirm:
turn printer off, press PAUSE button and at the same time, power on, don't release the button, please wait until printer LCD screen come on, then release button. It will print the PAUSE test and after few 3-4 prints, u can turn off and on again otherwise printer not ready to print your labels until u restart it. (pause test stops after 10-15 labels). this pause print just show how the print head is and if come with vertical lines, u will need to replace. other idea is (if u can) turn the bar code different position or on vertical way at label format. Thanks.

This sounds like a size issue, meaning that your label has too many lines and that kicks to the "next page".

Look for too many line items on first label.

The label is not calibrated. Press keys FEED, PAUSE and CANCEL, turn the printer and release the keys when making the labels. Also verify that the type of material is NOT CONTINUOUS.
Roberto Martinez

Firstly make sure your using the correct drive ZM400 rather than Z4M. if you are using the applications driver make sure of headers and footers sizes and the print area is set correctly. If your using odd sized lables download some new drivers from the Nice Label website, they are far more adjustable that the standard Zebra drivers.

Did you switch your ribbon as well?

Check the "Dithering" setting in the printer driver. Turning "Dithering" on improves graphics but reduces speed of processing.

Might foul the ribbon sensor, clean the sensor and try to print again.

Try a reset: press the PAUSE and FEED keys while turning the printer, release the keys when feed the label. You can also try downloading the latest firmware.

better to send it for repair