Question about HP Fax Machines

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I bought an hp 640 fax machine. I tried to fax 1-888-hp fax me without responce. I have my name and number set in the fax header, and I have it set on auto recieve.I don't know what i'm missing.

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Plug a regular phone into the wall jack to verify that you have a dial tone.

Posted on Nov 13, 2008

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No you can't. The 640 is a fax machine only. It doesn't have any way to connect to a computer, just to the telephone line. HP's information about this machine is here.

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How do I change the company header on this fax machine?


with function key go to entry mode and own number set .change name and number

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I have the same Problem...HP 640 Not sending FAXES


Plug a regular phone into the phone jack and test to be sure you have a dial tone.

Sep 17, 2009 | HP 640 Inkjet Fax Machine

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Fax machine works good but I bought it at an auction sale and when you send a fax it has the former owner name and fax number on it. I need to change this info to my name & fax# and don't have a manuel...


To change the fax header from the front pannel:
Press Menu , then 7 , then 2 . Enter your fax number and name to be printed on all outgoing faxes. NOTE: In some locations this is a legal requirement. Entering text Press the keypad numbers corresponding to the letters you need. It will cycle through the lower case, then the upper case of each letter. Press the right arrow button (also the Speed Dial button) to advance to the next space. Example: Pressing number 2 once = a, twice = b, three times = c, four times = A, five times = B, six times = C, seven times = 2. *** You can get support for your printer (i.e., download drivers, software, manual an other documentation and access FAQs and How-Tos for your printer) from HP, here: http://h10025.www1.hp.com/ewfrf/wc/product?product=58854&lc=en&cc=us&dlc=en&lang=en&cc=us

Aug 20, 2009 | Fax Machines

1 Answer

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

2 Answers

Cant change fax number of machine


GO INTO THE MENU AND YOU ARE LOOKING FOR FAX SET UP IN THERE YOU WILL FIND A SECTIOON TO SET D FAX HEADER AND NUMBER THE HEADER IS THE NAME THAT SHOWS WHO IS SENDING THE FAX IE ..VOLVO TULSA OR WHITE HOUSE!!! YOU ENTER THE FAX NUMBER BY THE DIAL PAD AND PRES IOK TO SAVE

Jun 26, 2009 | Brother IntelliFax-2820 Laser Fax

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Just finished setting up my HP 640 Fx and tryed to test the fax machine by dialing the number in the setup guide and I received the following message:"No answer from the remote Fax". Please...


Sorry I'm not interested in your plan as of yet. I just bought the machine and expected some support for setup and under warranty without having to pay for it. Once it is out of warranty I may be interested. I would at least expect HP to provide this support without having to pay. This doesn't say much for the company. If they do provide this help I would expect your organization to at least give a potential customer HP support information.

Dec 13, 2008 | HP Fax Machines

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

3 Answers

HP 640 Fax...can't recieve faxes


You cannot use a four wire cable to connect the fax to the wall. You must use a two wire cable, like the one that came with the machine.  BTW, that means you can't you the EXT port to connect a two line phone or answering machine.

Sep 04, 2008 | HP 640 Inkjet Fax Machine

1 Answer

Not Receiving Faxes


It sounds like you're not set for AUTO RECEIVE. Try unplugging power cord and re-plug in

Aug 13, 2008 | HP 640 Inkjet Fax Machine

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