Get a syringe and put an ink tube on, and fill with cleaning
liquid. Push the ink tube on the inlet of blocked colour of the
printhead. Once the tube firmly attached to the inlet, starting to
push the syringe gently, you will see droplet starting to form on
the surface of the printhead. Increase pressure gently and
eventually you will see a thin stream shooting out, normally it
will form a line but this depends on the nozzle arrangement.
In most cases, you can wash the printhead out. However, you
may also experience other phynominals.
Cleaning liquid comes out from nozzle of different colour block:
if this happens, means internal damages and ink leaking from
one to another. You need to replace the printhead.
Stream of cleaning liquid shooting to different directions: if this
happens, printhead may still functional but printing result will
be bad because the position accuracy of ink droplet is bad. This
is also a sign internal starting to fall apart, and printhead won’t
last long.
Some nozzles are still blocked after cleaned: this normally
caused by tamination or dried ink inside ink feeding into the
printhead, and it’s permanently blocked the printhead. You can
still use the printhead but printing quality will be degraded. You
can increase passes and increase feathering setting to cover
up the white stripes caused by unfired nozzles.
You can also take the printhead out to wash, just need to make
sure to keep the circuit board side higher, you don’t want to let
cleaning liquid there, or it will damage the printhead.
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