Question about HP 640 Inkjet Fax Machine

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Fax machine freezes up

I have a HP 640 fax machine. It freezes up after about a minute. I unplug it and it will start to work again but then freeze again. How do I solve this? The fax machine is only about 2 years old.

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

leroyal
  • 2120 Answers

SOURCE: HP 640 Fax...can't recieve faxes

Try disconnectiong the handset completely

Posted on Sep 05, 2008

leroyal
  • 2120 Answers

SOURCE: HP 640 fax

Are you plugged into the LINE port?

Posted on Oct 30, 2008

leroyal
  • 2120 Answers

SOURCE: I bought an hp 640

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

Posted on Nov 13, 2008

newrd1
  • 185 Answers

SOURCE: Hi, is a windows driver for the HP 640 Fax

yes there is
go to HP.com
search for it

Posted on Jan 03, 2010

  • 31 Answers

SOURCE: How to turn off the ringer for HP 640 Fax Machine

Silent mode You can turn the sounds of the HP Fax (including ringing) on and off using the control panel button. You can also set all sounds to turn off on a daily schedule; for example, turn all the sounds off between 8 pm and 8 am. 1. Press Menu repeatedly until BASIC FAX appears and press OK. 2. Silent Mode will display. Press OK. 3. Select On-Daily and press OK. From: 00h To: 23h will display. 4. Enter a start time and an end time and press OK.

Posted on Jul 06, 2010

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are you sure you have ink in your fax machine. Try just making a copy.

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while the printer is powered on.....unplug the power module and then press and hold the # 3 button at the same time......while holding the two buttons reconnect the power module......will fix the problem.

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Jan 07, 2010 | HP 640 Inkjet Fax Machine

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

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

1 Answer

HP 640 fax


Are you plugged into the LINE port?

Oct 30, 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

1 Answer

Fax Machine freezing


TRY REPLACING SMPS (MAIN FILTER CAPACITOR) --IF NOT SOLVED THEN REPLACE THE MAIN PBA(MAIN BOARD), HAPPY FAXIONG OMNIPRESENT

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