Question about HP LaserJet 2840 Printer

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CATRIDGE INSTALLATION Hai Shan, I had a problem installing the catridges.What is the best way to handle it?. Thanks permila

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Handle it with the HP logo facing you, then installing it as carefully as you can.
It has chemical toner inside and they do tend to spill .

Posted on Jan 10, 2008

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This is deffinately due to catridge circuit problem.Canon suggest that we have to replace emptied catridges with new genuine canon catridge they dont suggest refilling and also not give any support for refilling catridges. So you can replace catridge with new one.
This Happens due to weakining of catridge circuit portion or may long period printer not in use.
If you not want to replace catridges i will give you the possible hints it may fix refilled catridges.
1.Clean the catridge circuit portion with soft cloth,care must be taken that there is no smudge or ink traces on catridge circuit.
2.Clean the ciruit of printer catridge placing box present inside the printer .wipe out the any sumdge or ink traces.
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