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HP DesignJet CP Series Printers
Message Explanation and Action
Printhead check
error
JJ-J →
or
Printhead check
error →
The message “Printhead check error” may be displayed if:
D You are using colored media. Either disable checking or use media that is
clean, white, and opaque.
D There are dirty nozzles on the printhead. Replace your ink system. Do not
attempt to clean the nozzles.
The squares that are flashing indicate the ink systems that have failed. If the
message contains no squares, the procedure has failed because of a problem that
is not related to specific printheads, for example, a problem with the media.
Press ↓ to continue. The message Check ink system → / Ignore → will be
displayed. If you press ↓ again to continue, you may still be able to print again,
but image print quality may be affected. To fix the problem, select
↑ to check the
ink system.
Printhead contact
error JJ-J→
CAUTION:
The printheads, indicated by flashing squares, have failed to function because of
an unusual electrical signal from the printhead. The most likely cause of this
message is that the electrical contacts on the printhead or printer carriage are
dirty and need cleaning.
Press the ↓ key to check the printheads. Open the window when indicated, and
remove the printheads indicated.
Look at the electrical contacts on the printhead and carriage. If they are
dirty, they should be cleaned.
Do not touch, wipe, or attempt to clean the printhead nozzles. This can
damage the printhead. Handle the ink systems with care.
If you don’t correct the error now, you will see the status message “Ink
system error”.
Printhead failure
JJ-J→
The printheads indicated by flashing squares have failed, either during printhead
initialization or during printing. The printer may have detected an unusual
electrical or thermal signal from the printhead that may require attention. The
most likely causes of this message are:
D The ink cartridge is empty. If this is so, your ink system has reached the
end of its normal life, and you will need to buy a new ink system to
replace the old one.
D There has been a problem inside the printhead that has caused it to fail, for
example, the printhead has overheated.
You should replace the indicated ink systems immediately.
Press the ↓ key to check the printheads. Open the window when indicated, and
remove the printheads indicated. Try reseating the printhead.
If you don’t correct the error now, you will see the status message “Ink
system error”.