HP laserjet J6450-won't print in black

alray1989 · Nov 26, 2010

HP Laserjet J6450 will print color but not black.
Black is 75% full. Have run the cleaning function several times.

Any help is apprerciated.

tgell · Nov 26, 2010

Your printer head needs to be cleaned or replaced. I believe this to be an inkjet printer and not a laser.

(1) Open the printer and wait for the carriage to slide over. If for some reason it does not follow these instructions:
(a) Unplug the printer
(b) Manually slide the carriage over until you can get the ink cartridges out.
(2) Remove the ink cartridges from the print head.
(3) Use cotton swabs dipped in hot water or a mix of hot water and isopropyl alcohol to thoroughly clean the print head.
(4) Repeat this until there is no ink residue coming off on the cotton swab.
(5) Once finished, allow to dry and replace the cartridges
(6) Try to print something now

If that does not work then you have one of two possibilities:
(1) One of the ink cartridges is defective and causing the error
(2) If it's definitely not that, then the print head will need to be replaced.
Click to expand...

plodr · Nov 26, 2010

Officejet J6450? Does black print when you do a test page?

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HP laserjet J6450-won't print in black

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HP laserjet J6450-won't print in black

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