Question about HP LaserJet 2420dn Printer

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How do i take out the pins on hp q7553a when i want to refill it . i,ve manage to take one that you have to push it in how do i pull the other one out

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I know you do it for first time,let try ,push in too.

Posted on Aug 01, 2009

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Posted on Jan 02, 2017

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