What's your problem?ext memory in the ext jack on rear of unit not recognised check ext memory turn power off then on.

used good power jack and check for wrong soldering&tracks cat
then joint the power jack its work

The C7280 can be used as a stand-alone fax machine. All you need to hook up to the printer is a telephone line. Connect the phone line to the jack marked "1-Line" on the rear panel, below the power supply connector. If you want, you can connect an extension phone to the jack marked "2-Ext". The line connection is for a standard telephone line. Once the line is connected, faxing is pretty much the same as it is on any fax machine. Put your documents face up in the feeder on top, or for a single sheet, face down on the scanner glass. Press the "Fax menu" button on the control panel and you'll be asked for the number. Enter the number from the keypad and then press the "Start fax black" or "Start fax color" color button to send the fax. Other than the phone line, there isn't anything else you need to hook up.

You can download the manual from HP if you need it for reference. It explains how to use the special features of the fax machine, like broadcast faxing, memory dialing, printing fax reports, etc.

The music comes into your system at the EXT MUSIC jack on the Key Service Unit. In a TA series, the main board has 11 RJ-11 jacks and 2 1/8" jacks for PAGE and MUSIC. Whatever is connected to that is your music source. It's labeled similarly in a TAW and TD systems.

Carl

See Page 72 of the User Manual available here:

http://www2.panasonic.com/consumer-electronics/support/Phones-Fax/Fax-Printers/Multifunction-Printers/How-To-Guides/model.KX-FLB801.H#ts

I cannot hear a dial tone.

The telephone line cord is connected to the [EXT] jack on the unit. Connect to the [LINE] jack (page 21).

L If you use a splitter/coupler to connect the unit, remove the splitter/coupler and connect the unit to the wall jack directly. If the unit operates properly, check the splitter/coupler.

L Disconnect the unit from the telephone line and connect a known working telephone. If the working telephone operates properly, contact our service personnel to have the unit repaired. If the

working telephone does not operate properly, contact your telephone company.

L The power cord or telephone line cord is not connected. Check the connections.

L If you connected the unit through a computer modem, connect the unit directly to a telephone line jack.

I cannot make calls. L The dialing mode setting may be wrong. Change the setting (feature #120 on page 22).

The unit does not ring. L The ringer volume is turned OFF. Adjust it (page 23).

Hope this is helpful. ;)

The phone is either off hook or the line is shorted out somehow. If it's shorted out, it's likely a jack and you should replace it. I suggest you contact your vendor for assistance.

The extension is shorted somehow - likely corrosion on the jack. Replace the jack and see if that corrects it.
If it doesn't, contact your vendor for assistance.

black=grd
red=12v switched
orange=12v all the time
blue=to control of power amp or auto antenna relay control
green=front left+
green/black= front left -
green/red=rear left +
black/green=rear left -
gray=front right+
gray/black=front right -
gray/red=rear right +
black/gray=rear right -
rear out jacks on back of unit goes to ext power amp if you have

I tried all the fixes out on the net and called sony product support. They offerered to sell a different refurbished product for $150 plus shipping and handling. I WILL NEVER BUY A SONY AGAIN.

I had the same issue. it is not recognizing the disc. I called in and I am having to send it in for servicing. The message you are getting is because the only option you are getting is the BD data one and not the one to play the disc.

Did the Live Chat with Sony, and they said if you reset the unit (unplug it for a minute and plug it back in) that should fix the issue. If it does not (in my case, it did nothing) the unit needs to be sent in for service. I'm taking mine back to the store in hopes for a refund. Good luck!