12-04-2019 01:55 AM
HP OfficeJet Pro 6978 All In One, new HP ink cartridges, worked well then suddenly the black ink stopped. Attempted to Allign but no black ink. Cleaned and Resetted but to no avail.
12-06-2019 09:22 AM
@Johnnycarbon, Welcome to the HP Support Community!
Let us try these steps to resolve this issue:
Reset the printer
- With the printer turned on, disconnect the power cord from the rear of the printer.
- Wait at least 60 seconds.
- Reconnect the power cord to the rear of the printer.
- Turn ON the printer, if it does not automatically turn on.
- Wait until the printer is idle and silent before you proceed.
Note: HP recommends connecting the printer directly to a wall outlet rather than a surge protector or a power strip.
Update the printer firmware
Click here to know different methods of updating printer firmware.
Check the estimated ink levels
On the printer control panel, touch the Ink Level Indicator icon . The control panel displays estimated ink levels. Replace any low or empty cartridges.
Clean the printhead
From the printer control panel, open the Setup menu.
Open the Printer Maintenance menu.
If necessary, open the Tools menu, and then touch Clean Printhead.
If the print quality is unacceptable, touch Clean Again to continue the next level of cleaning. If necessary, repeat these steps for the third cleaning cycle.
NOTE: If the printhead is badly clogged, it might require another cleaning cycle. If so, wait 30 minutes before you perform all three levels of cleaning again.
Also, perform step 9 mentioned in this document. Try printing or making a copy and check if the issue persists.
Let me know how this goes.
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