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- HP Community
- Printers
- DesignJet, Large Format Printers and Digital Press
- hp designjet z6 error 8039-4d99-00900

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02-10-2021 02:44 PM
Hi.
My customer have this error on the plotter: 8039-4D99-00900.
They saw lines were missing, so they replace the printheads and the plotter doesn't recognise the printheads, mostly the black one.
Someone have an idea of the problem?
I have look in the service manual and didn't found this error code.
Thanks.
02-11-2021 04:18 AM
Dear Sir
first remove the latest installed print head and restart the plotter if no error (8039-4D99-00900.) perform replace print head
and insert the new print head or even the older on taking good care to mark the chosen color print head .
and try again
02-16-2021 10:11 AM
Hi. Thanks for your support.
I did remove the printheads and restart the plotter.
Same problem, the plotter wont accept the printheads black/matte & maybe the other 2 printheads, because the plotter didn't finish the installation of the black/Matte printhead, so the 2 others have not finish their installation.
So Just to resume what the user did, when he first saw the code 8039-4d99-00900:
He install the latest firmware and the error code wasn't there anymore, but he saw that there was white lines.
So he replace the printheads (3), but the installation never went to the end.
I clean the contacts of the printheads, on the carriage and i try with a brand new black/matte printhead (universal printhead) and still no succed.
So 2 new black/matte printheads have been tried and 2 new other printheads(colours).
Do you have an idea what could be the cause of the plotter not accepting the printheads?
Could it be the firmware?
Should i replace the carriage?
Thanks.
02-18-2021 02:25 AM
hi
If the plotter is starting without any error without the print heads all removed and check that they are marked with the right color to know the right position as it is a universal print head and can be installed any where in the carriage .
after removing the print head put the head nozzles on a paper tissue to check the right color of each print head , some times client make mistake or just tell you lies just not to pay their errors ... but check the colors on the tissue and install the print head
check all inks are valid and more than 20 % and restart the printer
good luck