HP Photosmart C4780 Printer (96 Views)
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Student
cly69
Posts: 1
Registered: ‎01-04-2012
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HP Photosmart C4780 Printer

Hello,

 

All the lights on my C4780 printers are blinking when I turned on.  I replaced with new cartridges, but did not work.  Did anyone has that problem before?

 

Thanks

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