New empty syringe (big one)
Gloves (to protect your hands fromink)
Paper tissue (to clean the excessink)
Empty Plastic bottle (Here you putthe ink from the syringe)
Ensure that you have put new blackink cartridge to K8600.
Ensure that the printhead arerecognized by the printer or no light alarms.
Press the Power button to turn onthe printer.
Test print in microsoft excel with4 color black/yellow and cyan/magenta.
If black only is missing means youhave clogged problem from the host.
Wear your globes, prepare thematerials needed.
Open the top cover.
Press and hold the Resume buttonuntil the carriage moves to the left.
CAUTION: Be careful not to proceed until the carriage is on the left sideof the printer. If the carriage does not move to the left automatically, turnthe printer off and back on and then try holding down the Resume button again.The printhead can be damaged if the carriage is not all the way to the left forinstallation.
Lift the printhead latch.
Lift the handle of a printhead anduse it to pull the printhead black/yellow out of its slot. Put printhead in thepaper tissue upward.
Your printer are still ON becarefull not to touch the flex copper circuit.
Get your syringe, use this to pullthe ink from the nozzle cap ( see link picture)
After the done the syringe method,Insert the printhead black/yellow into its color-coded slot.
Press down firmly on the printheaduntil it snaps into place.
Pull the printhead latch all theway forward, and then press down until the latch engages.
Close the cover.
The printer should align theprintheads automatically in a few minutes, printing an alignment page.
Print a test with black color only,If it does not print, try to change the Printhead.
This is the only solution I foundin my HP k8600 black ink problem.