Ensure you have all of the required parts. Out of the box, the printer includes:

• The Zebra ZD421 label printer
• A power supply and power cable
• Two different sized ribbon takeup spools (Cardboard tubes)

You’ll also need:

• AIMs eyewear RFID labels
• A printer ribbon

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1. Connect the power supply cable to the power supply. Plug the barrel jack into the back of the printer and the power cable into a wall outlet. The LED indicator on the power brick should illuminate.
2. Hold the power button down for two seconds to power on the printer. The LED power light will illuminate.

Zebra provides a great visual walkthrough of this step in this link.

To install the ribbon:

1. Install the empty take-up core by placing it in the spring-loaded take-up spool connectors in the front of the printer.
2. Install the ribbon by placing it in the spring-loaded ribbon mechanism in the back of the printer.
3. Pull the ribbon until it reaches the empty take-up core.
4. Wind the ribbon around the take-up core once or twice until it is naturally held securely in place.

Zebra provides a great visual walkthrough of this step in this link.

To install the labels:

1. Remove the outer layer of labels.
2. Place the media in the supply holders.
3. Verify that the media sensor is in the center position.
4. Press the labels under the media guides.
5. Close the printer.

Zebra provides a great visual walkthrough of this step in this link.

To calibrate the printer:

1. Open the printer.
2. Verify the media sensor position.
3. Close the printer.
4. Press and hold the Pause and Cancel buttons for two seconds.
5. The printer will feed several labels.
6. Press the feed button one time to ensure proper calibration.

If for any reason, the printer does not feed one complete label, please double-check the steps in the guide and repeat the calibration step.

To connect your AIMs app to your printer, follow these steps:

1. Open your A.I.M.S. app.
2. Tap on Settings
3. Tap the Connect Printer icon
4. Select your printer from the list and tap the Select button

Please follow this guide to commission a tag using the AIMs app to print your first label. If the label is not aligned properly, follow the calibration steps in this guide again.

1. Launch the AIMs app and tap on “Onboarding”.
2. Tap “Yes” to commission a frame with a UPC.
3. Pull the trigger to scan your UPC barcode.
4. Tap on “Print” to print a test label.

Note: Do not follow the instructions to assign the RFID tag if you’re not happy with the print position and print quality. Follow the calibration steps in this guide until the label appears correct