Question about HP 640 Inkjet Fax Machine

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HP 640 fax

About 2 days ago my fax stopped working. I checked the power. Reattached all the cables. Tried another device (it worked fine.) Unplugged everything and waited 10 minutes and re-plugged but nothing has worked. The display is accurate but there is no dial tone and makes no noise when dialing. Is it dead or is there another way to reset it?
The machine is less than 9 months old with very light use. 
Michael

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Are you plugged into the LINE port?

Posted on Oct 30, 2008

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Why my HP 640 Fax will not receive a fax?


Your firstly need to put your hp fax machine through the machines fax diagnostics found under the tools menu. This will hopefully identify any obvious problems.
You need to ensure that you have the correct cable from your telephone socket to the fax machine. It should be a BT Plug to RJ11 Crossover telephone cable in the U.K. This cable reverses the polarity of the terminals and will look identical to other terminals but is not.
Available from cabling for less Item Code BT-203X Price 3.28 plus vat and postage.
Ask your telephone line provider to check there is no noise in the background as fax machines sender and fax machiine receiver are like birds in love. They sing to each other before the receiving machine recognises the sending machine and accepts the message.
If you require any further assistance then please do not hesitate to contact me.

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