MEX-N4000BE, MEX-N4000BT, MEX-N4050BT, MEX-N4070BT - Sony Car Audio Service Manual (repair manual). Page 9

 

1.  In the state of source off (the clock is displayed on the 

liquid crystal display),  enter the test mode by pressing the 
buttons in order of the [  4] t [MIC 5] t [PAUSE 6] 

(press only the [PAUSE 6] button for two seconds).

 

 

2.  In the state in which the software main version is displayed 

on the liquid crystal display, enter the Bluetooth address 
(BD_ADDR) display mode by pressing the [

 

DSPL 

MENU] button.

 

 

(Displayed characters/values in the following fi gure  are 
example)

 

 When pressing the [  DSPL MENU] button again, the desti-

nation code is displayed on the liquid crystal display, but it is 
not necessary to display in this step.

 

3.  The resetting operation is executed by pressing the [

 

OFF 

SRC] button for 1 second after the confi rming ends, and 
the unit returns to the normal condition.

2.  Turn on the NFC function of the smartphone.
3.  Start the NFCtagWriter application on the smartphone.
4.  Tap the “Write” on the screen of the smartphone.

5.  Input the Bluetooth Local Name (BL_NAME).
 

(Input the “Sony Car Audio” with the keyboard on the smart-
phone, or tap the “List” on the screen of the smartphone and 
select the “Sony Car Audio”)

Bluetooth Local Name

Bluetooth Device Addres

6.  Input the Bluetooth address (BD_ADDR).
 

(Input the Bluetooth address (BD_ADDR) that written on the 
BT module label with the keyboard on the smartphone, or tap 
the “QR” on the screen of the smartphone and read the barcode 
with the camera of the smartphone)

Bluetooth Device Addres

Sony Car Audio

7.  Tap the “Write” on the screen of the smartphone, in the state 

that unchecked the box “Read-only”.

48D2242F241A

Sony Car Audio

8.  Touch the N-mark part of the smartphone to the N-mark part of 

the unit.

9  Check that “Completed!” is displayed on the screen of the 

smartphone.

 When “Completed!” is not displayed on the screen of the smart-

phone, refer to “3. Error Display” on the page 10.

– Continued on next page –