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The Zebra GK420d is a direct thermal label printer for desktop use.

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zebra gk420d printer indicator light flashes red and green

zebra GK420d printer indicator light flashes red and green and printer does not print

is there a reset button or what would be the fault?

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Error 8 Alternate Green Red FLASH memory is not programmed.

Return the printer to an authorized reseller.

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Error 9 Red and Red Green The printhead or motor has had a critical failure.

Return the printer to an authorized reseller.

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Status Indicator Reference

A complete list of status light indicators for the GK series printers can be found here:

https://km.zebra.com/kb/index?page=conte...

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Thank you, with your help I was managed to repair my gk420d. Fixed the rfid lamp.

Morten

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Can you explain how you solved it? Many thanks

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Morten, can you give details of your fix?

Thx

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Morten can you please explain how you fixed the rfid lamp?

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Good evening!

The flash memory S29AL032 has inconsistent data, you must unsolder the memory, erase, program and resolder on the main board.It is service for technicians.

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Please give details I have the same problem

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Please delete this thread from the internet immediately since the unhelpful information it contains keeps coming up in my google searches!!! PLEASE DO THIS IMMEDIATELY!!!!

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brian will be eternally grateful.
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