Zebra ZT411 ZT421 How To Replace The Printhead

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Step-By-Step Instructions To Replace The Printhead On The Zebra ZT411 and ZT421

Replacing the printhead on your Zebra ZT411 or ZT421 printer is a straightforward process, but it requires careful handling to avoid damage. Here’s a step-by-step guide to assist you:

Important Safety Precautions

• Power Off: Ensure the printer is turned off and unplugged from the power source.
• Cool Down: Allow the printer to cool down if it has been in use recently to prevent burns.
• Static Safety: Use a grounded anti-static wrist strap and a conductive mat to protect sensitive electronic components from electrostatic discharge.

Steps to Replace the Printhead

1. Open the Printer: Lift the top cover to access the print mechanism.
2. Release the Printhead:
• Locate the printhead release latch on the right side.
• Push the latch toward the printhead to release it.
• Swing the right side of the printhead outward.
• Gently pull the printhead to the right to free it from the actuator arm.
3. Disconnect Cables:
• Carefully detach the two cable connectors from the printhead.
• If present, remove the ground wire attached to the printhead.
4. Remove the Printhead: Lift the printhead out of the printer to remove it completely.
5. Install the New Printhead:
• Align the new printhead with the actuator arm.
• Insert the left side tab into the recessed slot on the left side of the actuator arm.
• Align the spring wire notch on the back of the printhead with the spring wire in the printer.
• Push the right side of the printhead into place until the latch locks it securely.
6. Reconnect Cables:
• Attach the ground wire (if applicable) to the printhead’s ground tab.
• Connect the two cable connectors to the printhead, ensuring they are properly seated.
7. Verify Installation:
• Press down on the printhead to ensure it moves freely and locks into place when pressure is released.
8. Clean the Printhead:
• Use a new cleaning pen to gently wipe the printhead, removing any fingerprints or debris.
• Clean from the center outward to avoid damaging the printhead.
9. Reload Media: Place the media back into the printer.
10. Test the Printer:
• Plug the printer back in and turn it on.
• Print a configuration report to ensure the new printhead is functioning correctly.