Question about HP 640 Inkjet Fax Machine

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Not Receiving Faxes

Hi
My HP 640 Fax will not receive faxes but I can send them....please help?
Cyn

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  • Anonymous Mar 13, 2014

    won't receive faxes

  • Anonymous Mar 18, 2014

    will not receive
    faxes

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1 Answer

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

Posted on Sep 05, 2008

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1 Answer

I'm not receiving certain faxes. How do I ensure they will all be sent to me?


Dear
Pl. check the memory received., If your fax setting is not done for memory setting i.e. when you receive a fax that immediately printed .Then the fax machine is right some times voice calls also generated if it was given earlier for that or used for voice call, so caller may try to communicate for voice call and got the fax tone (as the fax machine is in auto mode),he simple disconnect the line.
and fax machine may display some error message.
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are you sure you have ink in your fax machine. Try just making a copy.

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ECM error message


Noise in the phone line, or low signal strength during fax transmission can result in fax failures. Noise or poor signal strength can cause a partial or complete loss of fax information during transmission. When Error Correction Mode (ECM) is on, the receiving fax machine checks the fax information for errors during reception. If the receiving fax machine detects an error, the receiving fax requests that the sending fax resend the information. Resending all or part of the information can make transmission times longer, but helps improve the quality of the received fax.
If the phone line quality or signal strength is extremely poor, sending a fax can fail. Turning off ECM can improve the ability of the product to send a fax successfully when the phone line quality is poor. However, the image quality of the received fax might be poor.
If ECM must be off to send faxes successfully, have the telephone service provider check the phone line quality. For an HP Fax, turning off ECM from the control panel does not necessarily mean that fax transmission will not use ECM. Fax products use ECM as follows.
  • All faxes sent in color use ECM.
  • All faxes sent at the highest transmission speed use ECM.
  • The ECM setting affects only sent faxes, not received faxes.
Enabling or disabling Error correction mode (ECM)
  1. On the product control panel, press the Menu button (c01743394.gif ).
  2. Use the arrow buttons (c01073166.jpg ) to select Basic Fax , and then press the OK button (c01335940.jpg ).
  3. Use the arrow buttons (c01073166.jpg ) to select ECM Mode , and then press the OK button (c01335940.jpg ).
  4. Use the arrow buttons (c01073166.jpg ) to select On or Off , and then press the OK button (c01335940.jpg ) to confirm the setting.
  5. Press the Back button (c01496476.gif ) twice to return to the main screen.

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Receiving faxes, won't send faxes. Comes up line


Your fax machine thinks everything is OK. If you can receive you can send.

call the failing fax number with a regular phone and listen for fax tones.

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1 Answer

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

1 Answer

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HI.when u try to receive or send any fax.fax gives any msg r not.first check ur telephone line.u have to connect it in line.there are two places in fax .one is ext and second is line.check it u r putting it line.for receiving check auto answer .put it on fax only mode.u will receive fax.MIAN AKHLAQ.if it helps rate the solution.

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

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Promotional faxes are coming through fine everyday. However, we can not receive any of our business faxes. No changes have been made to the fax. Please Help ASAP.

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