Hp 4620 will send faxes but won't receive. Auto answer on and tried all rings and distinctive rings but won't pick up. Tried auto detect but still won't pick up.

For more details on how to setup your Lexmark X4650 printer for faxing, please refer to the User's Guide found on the Lexmark website.
Additional info:If you have an answering on the same line as your fax:

To make sure the printer picks up incoming faxes, set Auto Answer to On, and then set the printer to pick up after a greater number of rings than the answering machine. For example, if the answering machine picks up calls after four rings, then set the printer to pick up after six rings. This way, the answering machine picks up calls first and your voice calls are received. If the call is a fax, then the printer detects the fax signal on the line and takes over the call.

If you have a voicemail feature associated in the same line as your fax:

Voice mail and fax can share the same telephone line if you subscribe to a distinctive ring service offered by your telephone company. This feature allows you to have multiple telephone numbers on one telephone line. Each telephone number has a designated ring pattern (single ring, double ring, triple ring, or double and triple ring). The different ring patterns let you know which telephone number was dialed, and which device you should use to answer the call.

If you do not have distinctive ring service, then set the printer to receive faxes manually (Auto Answer Off). This setting lets you receive both voice calls and fax calls, but works best if you use voice mail more often. You need to turn off voice mail whenever you are expecting a fax.

If you have an answering machine connected to the same line as your fax:

To make sure the printer picks up incoming faxes, set Auto Answer to On, and then set the printer to pick up after a greater number of rings than the answering machine. For example, if the answering machine picks up calls after four rings, then set the printer to pick up after six rings. This way, the answering machine picks up calls first and your voice calls are received. If the call is a fax, then the printer detects the fax signal on the line and takes over the call.

If you have a voicemail feature associated to the same line as your fax:

Voice mail and fax can share the same telephone line if you subscribe to a distinctive ring service offered by your telephone company. This feature allows you to have multiple telephone numbers on one telephone line. Each telephone number has a designated ring pattern (single ring, double ring, triple ring, or double and triple ring). The different ring patterns let you know which telephone number was dialed, and which device you should use to answer the call.

If you do not have distinctive ring service, then set the printer to receive faxes manually (Auto Answer Off). This setting lets you receive both voice calls and fax calls, but works best if you use voice mail more often. You need to turn off voice mail whenever you are expecting a fax.

I hope this helps.

Should you need further assistance, please contact Lexmark Technical Support Center.

Issue When the all-in-one product is sharing a phone line with voice calls, some calls are interrupted by fax tones. Follow the steps below to solve the problem.Step one: Check the Rings to Answer setting If Auto Answer is enabled, the HP fax product will answer the phone line when the number of rings reaches the number of rings specified in the Rings-to-Answer setting. When voice calls will be received on the same phone line as faxes, set to rings-to-answer to 6. If you do not want the fax to answer automatically, either turn off Auto Answer from the front panel and receive faxes manually (this may result in lost faxes) or subscribe to a distinctive ring service from the phone company (if available). Refer to the Answering faxes manually section below to learn how to answer faxes manually or refer to the Using distinctive ringing section below for more information about using distinctive ringing. The Rings-to-answer setting for the HP Officejet 500 and 600 series products can only be checked or set using the all-in-one software on the computer. The Rings-to-answer setting for the HP Officejet 500 and 600 series products can only be checked or set using the all-in-one software on the computer. Follow the steps below to check or change the setting for all models except the HP Officejet 500 and 600 series:

1. Depending on the model, press either Menu , Setup , or Fax Setup repeatedly until Basic Fax Setup appears in the display.
2. Press Enter (or Start or OK ).
3. Press the right arrow button repeatedly until Rings to Answer is displayed, and then press Enter .
4. The number of rings before the HP fax product answers will be displayed.
   • The setting is correct if it is 6. Press Cancel or Stop (Stop Fax) to exit the menu.
   • If the number is not 6, press the right arrow button until 6 appears in the display and then press Enter (or Start or OK ).

You might want to check the User's Guide for your printer. To access it, on your computer, click on Start > All Programs > Lexmark > Pro200 Series > User's Guide. Go to page 62 to know how to setup your printer to fax.

If your fax is already setup - meaning you're already able to send faxes but not able to receive. Make sure that the Auto Answer is on. To check that, on the control panel of your printer, press on Setup > Fax Setup > Auto Answer.

If you have an answering machine, make sure that your fax will pick up 3 rings higher that your answering machine. If you answering machine picks up on the 5th ring, set your fax to pick up on the 8th ring. You can change that under fax setup.

If you have a voice mail service enabled in your phone, you'll need a distinctive ring feature for your fax to work if it's being shared on the same line.

Receiving a fax
Receiving a fax automatically
1 Make sure the printer is on and is connected to a working phone line.
2 Make sure that Auto Answer is on.
To check if Auto Answer is on:
a From the printer control panel, press (tool icon).
b Press the arrow buttons until Fax Setup appears, and then press ok.
c Press the arrow buttons until Ringing and Answering appears, and then press ok.
d Press again.
Check to see if Auto Answer is set to On.
e If Auto Answer is not set to on, press the arrow buttons until On appears, and then press to save the setting.
3 Set the number of times the telephone rings before the printer automatically receives faxes:
a Press the arrow buttons until Pick-up On appears, and then press ok.
b Press the arrow buttons until the setting that you want appears, and then press to save the setting.
When the number of rings you set is detected, the printer automatically receives the incoming fax.
Receiving a fax manually
1 Make sure the printer is on and is connected to a working telephone line.
2 Make sure that Auto Answer is off.
3 To receive the fax, press (green botton) or press * 9 * on the telephone after you answer it and hear fax tones.
4 Hang up the telephone.
The printer receives the fax.
Receiving a fax with an answering machine
1 Make sure that Auto Answer is on.
2 Make sure you have set the number of times the telephone rings before receiving a fax automatically.
When a telephone ring is detected, the answering machine picks up the call.
• If the printer detects a fax, it receives the fax and disconnects the answering machine.
• If the printer does not detect a fax, the answering machine receives the call.

3 Set the answering machine to answer incoming calls before the printer does.
For example, if you set the answering machine to answer calls after three rings, set the printer to answer calls
after five rings.
Forwarding faxes
Use the fax-forwarding feature if you are going to be away, but still want to receive your faxes. There are three
fax-forwarding values or settings:
• Off—(Default)
• Forward—The printer sends the fax to the designated fax number.
• Print & Forward—The printer prints the fax and then sends it to the designated fax number.
1 Make sure the printer is on and is connected to a working telephone line.
2 Press the arrow buttons until Fax Setup appears, and then press ok.
3 Press the arrow buttons until Ringing and Answering appears, and then press ok.
4 Press the arrow buttons until Fax Forward appears, and then press ok.
5 Press the arrow buttons until Forward or Print & Forward appears, and then press ok.
6 Enter the number to which you want to forward the fax, and then press ok.

check your fax set up... for example doe yoyu have an answering machine in house or do you have to dial out to get messages? if its an answering machine change the rings to answer on the fax machine to at least 2 rings after the answering machine answers
if its voicemail/answering service the machine may not answer at all.
if it is a shared line but with a different number specifically for the fax try a distinctive ring for the fax line and make sure the auto answer light is on. if the auto answer is not on... then the fax will not answer

Distinctive Ring basicsDistinctive Ring service is an optional service available from many telephone companies. The Distinctive Ring service permits you to assign more than one telephone number to the same telephone line. Distinctive Ring allows you to use a single phone line for both voice and fax calls. You can assign a unique phone number and ring pattern for incoming fax calls. When a fax comes in, each telephone number makes a distinctive ringing sound, such as a single ring, double ring, or triple ring.
NOTE: The Distinctive Ring Service is the name HP and others use to describe this feature. Distinctive Ring is also known as:

• Call Sign
• Custom Ring
• Ident-a-Call
• Ident-a-Ring
• Ident-a-Ring
• Multi Ring
• Personalized Ringing
• Ringmaster
• Smart Ring
• Teen-Ring

The Distinctive Ring Service allows the HP product to work similarly to a dedicated fax line. If you connect an HP fax product and a telephone to one telephone line, you can assign one telephone number for fax calls and another for voice calls.
NOTE: You cannot send or receive faxes when the phone line is in use. Even if the HP fax product has a separate telephone number, it is still sharing the same phone line. Set the Distinctive Ring Service Using the menus on the product control panel, follow these steps to set a distinctive ring pattern. Step one: Turn on Auto Answer Turn on Auto Answer by pressing the Auto Answer button on the control panel. The button light indicates when Auto Answer is on.If the button light is already on, you do not need to press the button. Step two: Set the distinctive ring patternFollow these steps to change the answer ring pattern.

1. Press the Setup button ( ) on the product control panel.
2. Press the Right Arrow button ( ) to select Advanced Fax Setup , and then press the OK button.
3. Press the Right Arrow button ( ) to select Distinctive Ring , and then press the OK button.
4. Press the Right Arrow button ( ) to select one of the following options:
   • All Rings
   • Single Rings
   • Double Rings
   • Triple Rings
   • Double & Triple Rings
5. Press the OK button to select the option.
6. Press the Back button ( ) to return to the main menu.

Now if you have anymore problems copy the link from below and paste it in your address bar and it will help you further with a document. Follow all the settings in the document and your fax should be setup,keep in MIND THAT THE RINGS TO ANSWER SHOULD BE 2,SO YOU CAN RECEIVE FAXES AFTER TWO RINGS

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01647469&tmp_task=solveCategory&lc=en&dlc=en&cc=us&lang=en&product=3795406

Note: check your equipment for:
Fax machine must be connected to an answer machine

Receiving a fax automatically:
1 Make sure the Fax Auto Answer light is on.
2 To set the number of telephone rings before the printer automatically receives faxes,
Receiving a fax with an answering machine
When a telephone ring is detected, the answering machine picks up the call.
• If the printer detects a fax, it receives the fax and disconnects the answering machine.
• If the printer does not detect a fax, the answering machine receives the call.
2 Set the answering machine to answer incoming calls before the printer does.
For example, if you set the answering machine to answer calls after three rings, set the printer to answer calls
after five rings.
3 To set the number of telephone rings before the printer automatically receives faxes.

Ok the first thing you need to check is to make sure that you have auto answer turned on so that the machine will pick up when you are trying to receive.

There are alot of different factors that can effect your ability to receive a fax - see the link attached from hp's website and read about your specific setup. Things that can effect the fax would be voicemail, digital phone line, distinctive ring service, call waiting, the fax being plugged into a strong connection.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00036559&cc=us&lc=en&dlc=en&product=79499&dlc=en&lang=en

press setup and change the following settings

basic fax settings:
1. auto answer : ON
2. Rings to answer = 3 rings (recommended)

Advanced fax settings:
1. distinctive ring pattern = all rings
2. ECM = OFF
3. Fax speed = slow