How to fix a hp printerl7555 that is off line

<ol> <li>If you don't know your product number, <a href="http://h20270.www2.hp.com/ediags/gmn2/welcome.aspx?lc=en&cc=us">click here</a> to automatically detect it.</li> <li>Manually download your drivers by <a href="http://h10025.www1.hp.com/ewfrf/wc/siteHome?lc=en&dlc=en&cc=us&lang=en&softwareitem=oj-40521-2&os=228">clicking here</a>. Enter your Printer Model Number, e.g. Deskjet D2680</li> <li>Unplug the power cord from the back of the printer and from the wall outlet. Reconnect the power cord to the wall outlet, but don't connect the power to the printer just yet.</li> <li>Perform a partial reset by disconnecting the power cord from the wall. Then, hold the # and 3 while reconnecting the power cord. Release the buttons once the cord is plugged in. When you release both buttons, the issue should be resolved.</li> <li>Perform a semi-full reset if the partial reset did not work by pressing and holding # and 6 while reconnecting the power cord to the printer and hold for 1 min after plugging in the power cord. When you release both buttons, the issue should be resolved.</li> <li>Verify that the phone cables are properly inserted into the wall jack and the back of the printer if you are receiving a "Phone off the hook" error message.</li> <li>A Phone Off Hook message indicates that the telephone line is open. This message would be expected in the following situations:</li></ol> <ul> <li>A modem on the phone line is accessing the Internet. When the other device is no longer using the phone line, the display should revert to the normal message.</li> <li>A phone connected to the HP fax (or the same phone line) is using the line, or the handset has been lifted.</li> <li>A credit card machine is using the phone line.</li> <li>Another electronic device is using the phone line.</li> <li>Telephone Answering Machine using the phone line</li> <li>The Start Fax button was pressed with no telephone number entered. Pressing Stop or Cancel should return the display to a ready state.</li></ul>Check this website for further help from HP: <a href="http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00322712&cc=us&lc=en&dlc=en&product=441125">http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00322712&cc=us&lc=en&dlc=en&product=441125</a>