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Calibrating Zebra Printers (OSX)

If your printer is releasing an extra blank label, printing incorrectly or over multiple labels, you will need to run a media calibration.

We have a video showing how to do this, which you can find here or simply follow the steps below. 

NOTE: Remember to name the printer just GC420d or GK888d when installing. You cannot rename later as the original name is still stored.

OSX (ZD220)

Press and hold the feed button on the top of the printer. The LED light will blink on and off once, keep holding, then blink on and off for a second time, now release the button. 

A few labels will feed out and the printer should stop on the label gap. 

The ZD220 has two button on the top compared to the GC420d. One of the buttons on the ZD220 is the power button, the feed key is to the right.

If the error continues,
1. Check that the gap sensor is in the middle of the label.
2. There is no dust or broken label covering the gap sensor
3. The driver has been set to gap/web sensing and not black mark or continuous media sensing. 

OSX (GC420d)

1. Create a plain text .txt file on the desktop called "zpl.txt". In that file type "~jc^xa^jus^xz" and save the file.

2. Open Terminal and type the command "cd desktop" then "/usr/bin/lpr -P <DeviceName> -o raw zpl.txt". For example "/usr/bin/lpr -P GC420d -o raw zpl.txt".

Your printer has now been calibrated.

OSX (GK888d)

1. Create a plain text .txt file on the desktop called "zpl.txt". In that file type "~jc^xa^jus^xz" and save the file.

2. Open Terminal and type the command "cd desktop" then "/usr/bin/lpr -P <DeviceName> -o raw zpl.txt". For example "/usr/bin/lpr -P GK888d -o raw zpl.txt".

Your printer has now been calibrated.

OSX (LP2844)

1. Turn off the printer with the ON/OFF switch at the back of the printer and wait 5 seconds.

2. Hold down the green button on the printer WHILE also turning the printer back on with the ON/OFF switch. The light will flash, on the second flash release the button. 2-3 labels will be discharged.

Note: This method may not work.

Your printer has now been calibrated.

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