MP2510 / Fax Sends / Does Not Receive

[Caveman]

MP2510 - Fax able to send but is not receiving.

Any suggestions appreciated.

Thank you -
Caveman

[totoro]

Is the machine set to auto receive? What happens when you dial the fax number? Does the machine pick up?

[teebee1234]

MP2510 - Fax able to send but is not receiving.

Any suggestions appreciated.

Thank you -
Caveman

Have you tried dialing the fax number from your cell while you're in front of it? If so, do you get the ring tone and is the device communication light come on indicating it's receiving a call (and never picks up-check for auto receive on) or does it never indicate an incoming call? The next step would be to plug in a handset directly in the wall jack and call the fax number again from another phone and see if you receive the call. If the handset doesn't ring, then you know it's a problem with their service. If it does ring, then take their phone cable that goes into the mfp and plug that into the handset and repeat the procedure (to test the phone cable). If the handset still rings, then plug it into the 'tel' port on the mfp and try again. If it doesn't ring, then you know to replace the fax board.

[Caveman]

Is the machine set to auto receive? What happens when you dial the fax number? Does the machine pick up?

Thank you - will follow up.

Cavceman

[Caveman]

Have you tried dialing the fax number from your cell while you're in front of it? If so, do you get the ring tone and is the device communication light come on indicating it's receiving a call (and never picks up-check for auto receive on) or does it never indicate an incoming call? The next step would be to plug in a handset directly in the wall jack and call the fax number again from another phone and see if you receive the call. If the handset doesn't ring, then you know it's a problem with their service. If it does ring, then take their phone cable that goes into the mfp and plug that into the handset and repeat the procedure (to test the phone cable). If the handset still rings, then plug it into the 'tel' port on the mfp and try again. If it doesn't ring, then you know to replace the fax board.

Thank you - will follow up.

Caveman

[Venom]

Then try calling your cell phone from the fax machine and see what phone number shows...odds are it has a different phone number then what they thought. Yes...I see that more often then you would think possible.

[KenB]

Not likely the problem, but I've seen it where the incoming ring voltage was too low to trigger having the fax portion of the machine pick up.

It should be about 90 VAC.

And Venom has a really good point. With all the shuffling around that can happen in a customer's office with fax and phone lines, an "identity crisis" is always entirely possible.

[Caveman]

Not likely the problem, but I've seen it where the incoming ring voltage was too low to trigger having the fax portion of the machine pick up.

It should be about 90 VAC.

And Venom has a really good point. With all the shuffling around that can happen in a customer's office with fax and phone lines, an "identity crisis" is always entirely possible.

What can be done to address a low ring voltage problem? Is there a setting that can be adjusted to correct for the problem?

Thank you -
Caveman

[KenB]

If the voltage is too low, that is the customer's issue with their phone system and up to them to get corrected - there's nothing that you can do about it. There is no adjustment that I know of.

Like I mentioned before, it's highly unlikely that's the issue.

I just remember that the few times we've had it (twice) we chased our tails for quite a while before we found it.

[Caveman]

If the voltage is too low, that is the customer's issue with their phone system and up to them to get corrected - there's nothing that you can do about it. There is no adjustment that I know of.

Like I mentioned before, it's highly unlikely that's the issue.

I just remember that the few times we've had it (twice) we chased our tails for quite a while before we found it.

Ken B -

Can you explain how it was finally determined that the ring voltage was too low to trigger the fax unit? I'm very interested to learn how this was accomplished. Was there some type of device used to monitor the phone line voltage?

Thank you for the follow-up.

Caveman

[KenB]

I had a phone line splitter with wires coming off the two center conductors (the tip and ring), and connected my meter with clips to these wires.

On some machines you can get your meter leads on contact points on the fax board, but that varies greatly from machine to machine.

Because the ring "on" cycle is so short, you should use a good quality meter with a "peek hold" feature to get a good reading.

[blackcat4866]

These are the desired voltages:

On Hook: -48 VDC (-42.5 to -56.5 VDC), 90 VAC
Off Hook: -10 VDC (-8 to -12 VDC), 8 VAC
Ringing: peak 125 VAC (110 to 137 VAC)

You'll want to use a low-tech D'Arsonval movement to catch the quick needle movements. It's not so uncommon. I've seen low ring voltages on no-less-than 6 times. In most cases it ends up being a PBx issue.
Take a look at this post:
http://www.copytechnet.com/forums/ko...-question.html

=^..^=

[Caveman]

I had a phone line splitter with wires coming off the two center conductors (the tip and ring), and connected my meter with clips to these wires.

On some machines you can get your meter leads on contact points on the fax board, but that varies greatly from machine to machine.

Because the ring "on" cycle is so short, you should use a good quality meter with a "peek hold" feature to get a good reading.

Ken B -

I have to apologize - I am not familiar with a line splitter. Can you expalin exactly what this is? Is this a phone line that was modified in order to take a meter reading?

I'm sorry to ask you for further help but I would really like to understand what you used to determine the ring voltage - this will prove extrememly helpful for future fax related problems.

I appreciate your time and assistance.

Thank you -
Caveman

[KenB]

Maybe not really a splitter, but rather a coupler, where you can connect two phone to one jack.

Again, you are concerned with the middle two wires - the outer two are only used if there is a second line.

If you're still at a loss, this is one area where the local Radio Shack could prove extremely helpful. For all intents and purposes, this is a phone issue, and nothing to do with fax.

[Caveman]

b

Maybe not really a splitter, but rather a coupler, where you can connect two phone to one jack.

Again, you are concerned with the middle two wires - the outer two are only used if there is a second line.

If you're still at a loss, this is one area where the local Radio Shack could prove extremely helpful. For all intents and purposes, this is a phone issue, and nothing to do with fax.

I believe I now understand what you're explaining - attaching a coupler that allows 2 phones lines/cables to be joined is attached to the phone line - the open end of the coupler provides access to the 2 center wires making it possible for meter probes to take a reading. Is this correct?

Thanks again for your help.

Caveman