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I need to register my new hp 640 fax series, and to get my 40.00 rebate, i can not find where i need to go. thanks for the help

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Www.hp.com is a good place to start..look for the registration link

Posted on Jun 16, 2008

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1 Answer

Face up or down on hp 640 faxes


Load the documents face down in the document feeder. (Print side towards the fax machine.)

HP offers a lot of support for their products. The User Manual for the HP 640 is available here: http://h10032.www1.hp.com/ctg/Manual/c01094202.pdf .

I hope this helps.

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Need a new manual------ lost mine


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Hope this helps! Good Luck!
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Jan 07, 2011 | HP 640 Inkjet Fax Machine

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Hooking up the HP 640 Fax


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Jun 04, 2010 | HP 640 Inkjet Fax Machine

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HP 640 fax won't send fax but phone works


Unfortunately wer purchased two new hp office jet 7610 which do not come with cabling and we could not get the fax to work. I spent 3 days on the telephone with hp and British Telecom each of which blamed it on each other. After doing some research on the internet I discovered that hp require a strange cable formant which is called a 'cross-over cable' is required. I bought them from cabling4less.co.uk and the product code is BT-203X. They can be found on their web site www.cabling4less.co.uk The link is: http://www.cabling4less.co.uk/category.php?cat_id=237 This should resolve this frustrating problem.

Jul 23, 2009 | HP 640 Inkjet Fax Machine

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HP 640 Fax series not printing


If it is a color printer, try printing just grayscale or black& white.  It is is already set to print just b/w, try printing in color.  Basically you may be out of ink.  Run the printer utility to clean the heads and see if anything changes.  A new set of cartridges should fix the problem, I believe.
Hope this helps...
~enov8

Feb 16, 2009 | HP 640 Inkjet Fax Machine

1 Answer

Won't send faxes to 817 area code, all others OK


The recipient may have a DSL phone line, or receiving to a fax server that blocks your area code.

Oct 14, 2008 | HP 640 Inkjet Fax Machine

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