Turn off the auto answer

Your error 43 refers to the fact that the fax you are calling does not answer. Talk to them and ask if their fax is set to "Auto Receive". its probably not.

The manual indicates where you may need to reset the unit if the memory is full or even if you just want to clear it, page 89-90.

You may use code: [MENU] [*][8][0] [SET] or [START]

You may also call - 1800-211-7262 for Panasonic's capable Technical Support; be sure to have the serial number of the product ready.

How can i remove call service6 problem on my
Problem with the Panasonic KX-FL511 Plain Paper Laser Fax

go here for PDF copy of manual.

http://www2.panasonic.com/consumer-electronics/support/Phones-Fax/Fax-Printers/Laser-Fax/Copier/model.KX-FL511

Unplug the power cord for 10 mins.

You can download a manual here:

http://www2.panasonic.com/consumer-electronics/support/Phones-Fax/Fax-Printers/Laser-Fax/Copier/model.KX-FL511

First, unplug the power cord for 10 seconds to reset the fax.

If that doesn't work, you will have to scroll through the menus and set to AUTO or AUTO RECEIVE.

You should be GREEN for AUTO. RED means MANUAL MODE

Unplug power cord and re plug in.

check to see if your phone line is plugged in the " L" or line slot on your fax machine if it is then press the speaker or monitor key and listen for dial tone. then you put a document into the feeder and dial your cell phone number and press send, when your cell phone rings answer and listen if you are getting a high pitched squeel. if you are then it should be working. try it the other way too by dialing from your cell and listen again for the squeel. if you still don't get the squeel you have a defective modem.

Thank You,

Mikey

Thank You,

Mikey

try the manual

http://www.retrevo.com/s/panasonic%20KX-FL511%20manual