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What formatter board to get?

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HP DesignJet 800
Microsoft Windows 7 (64-bit)

Hi there,


I recently got a hold of a DesignJet 800 (C7779B) and it appears to be missing the formatter board. Looking through part lists and on ebay there seems to be multiple part numbers with the same descriptions. What is the difference between all of them? And which one should I get? 

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According to PartSurfer (, the part number for the the formatter for that product code (C7779B) is C7769-69143.
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Are you sure as to what is missing. The 800 is the same as the 500 except it has an EIO formatter. Sometimes you can run the plotter without the formatter. When you turn on the machine does it come to a 05:10 error message? If it does hit the enter key and see if it then comes to ready. If it does just use the dj500 raster driver and it will work.

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