Monday, February 22, 2016

SONY Buletooth AUDIO SYSTEM - MEX-M70BT - Factory reset - Bluetooth audio function check – How to connect to smart phone – Car audio repair and service

                                                             Category: Card Audio Repair and Service 

Contents of this article 
  • Factory reset  
  • Bluetooth Function check 
  • Pairing with smart phone 



SONY MEX-M70BT

Connecting with a Smartphone by One touch (NFC)
By touching the control dial on the unit with an NFC compatible smartphone, the unit is paired and connected with the smartphone automatically.
 NFC (Near Field Communication) is a technology enabling short-range wireless communication between various devices, such as mobile phones and IC tags. Thanks to the NFC function, data communication can be achieved easily just by touching the relevant symbol or designated location on NFC compatible devices. For a smartphone with Android OS 4.0 or lower installed, downloading the app “NFC Easy Connect” available at Google Play is required. The app may not be downloadable in some countries/regions.
1. Activate the NFC function on the smartphone.
For details, refer to the operating instructions supplied with the smartphone.
2. Touch the N-Mark part of the unit with the N-Mark part of the smartphone.

Make sure that Bluetooth lights up on the display of the unit.
To disconnect by One touch
Touch the N-Mark part of the unit with the N-Mark part of the smartphone again.
Notes
When making the connection, handle the smartphone carefully to prevent scratches.  One touch connection is not possible when the unit is already connected to another NFC compatible device. In this case, disconnect the other device, and make connection with the smartphone again.
DESTINATION SETTING METHOD
When the complete MAIN board or IC502 on the MAIN board is replaced, the destination setting is necessary.
Destination Setting
Set destination according to the procedure below.
Setting the Destination Code
1. In the state of source off (the clock is displayed), enter the test mode by pressing the buttons in order of the [ RETURN] >  [MIC ] > [PAUSE ] (press only the [PAUSE ] button for two seconds).
2. In the state in which the software main version is displayed on the liquid crystal display (refer to following figure), enter the destination setting mode by pressing the buttons in order of the [ SEEK+] >[SEEK– ] > [PUSH ENTER/ VOICE].
(Displayed characters/values in the following figure are example)
3. Input the alphanumeric character of 12 digits of “F XXXXXX” displayed on the liquid crystal display, and execute the destination setting.
NoteEntering the Destination Code” for operation method.
4. The resetting operation is executed by pressing the [ OFF SRC] button for 1 second after the setting ends, and the unit returns to the normal condition.
Entering the Destination Code
1. Rotate the control dial, and select the alphanumeric character of “0 to F”.
2. The digit advances by pressing the [PUSH ENTER/VOICE] or [ SEEK+] button. The digit returns by pressing the [ MODE] or [SEEK–] button.
3. The setting is completed by pressing the [PUSH ENTER/ VOICE] button, and the initialization operation is done.
Method of operation by remote commander
(Except AEP, UK and Australian models only)
Note: The model to which the remote commander is not attached can also be operated by using the remote commander.
1. Press the [UP] or [DOWN] button, and select the alphanumeric character of “0 to F”.
2. The digit advances by pressing the [RIGHT] button. The digit returns by pressing the [LEFT] button.
3. The setting is completed by pressing the [ENTER] button, and the initialization operation is done.
Confirmation After Destination Setting
Execute the following operation after completing the destination setting, and confirm a correct destination was set.
Destination setting checking method
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 [ RETURN] > [MIC ] > [PAUSE ] (press only the [PAUSE ] button for two seconds).
2. In the state in which the software main version is displayed on the liquid crystal display (refer to following figure), enter the destination setting value display mode by pressing the [ SCRL DSPL] button twice.
(Displayed characters/values in the following figure are example)
3. Confirm the alphanumeric character of 12 digits in liquid crystal display is a value correctly input.
(Displayed characters/values in the following figure are example)
4. The resetting operation is executed by pressing the [ OFF SRC] button for 1 second after the confirming ends, and the unit returns to the normal condition.
INITIALIZING
The purpose of “Bluetooth Initialize” is to initialize the Bluetooth connection history (HF/Audio Streaming). (To delete the device information for the devices that you connected to when searching, etc.)
When complete MAIN board is replaced, it is necessary to initialize this unit. Refer to the following, initialize this unit.
Note: Phonebook data and dialed/received call history can be deleted by executing “Bluetooth Initialize”.
Procedure:
1. In the state of source off (the clock is displayed), press the [MENU] button.
2. Rotate the control dial, and select the “SET BT”.
3. Press the [PUSH ENTER/VOICE] button.
4. Rotate the control dial, and select the “SET BT INIT”.
5. Press the [PUSH ENTER/VOICE] button, and the message
“SET INIT-NO” is displayed on the liquid crystal display.
6. Rotate the control dial clockwise, and the message “SET INITYES” is displayed on the liquid crystal display.
7. Press the [PUSH ENTER/VOICE] button, and the message
“INITIAL” is blinked on the liquid crystal display.
8. When “Bluetooth Initialize” is completed, the message “COMPLETE” is displayed on the liquid crystal display for a moment.
9. Press the [ MODE] button, and return to the state of source off (the clock is displayed) mode.
Bluetooth Audio Function Check
Note: Depending on the connecting BT Audio device, track information (e.g. track name, playback time) can be on display. If the device doesn’t support AVRCP1.3, or, if AVRCP1.3 feature of the device has not been validated with this unit; the track information won't be shown. Even if there is no track information on display during playback of an AVRCP1.3 device, it is not a failure of this unit.
1. Connect the Bluetooth audio device (or cellular phone with Bluetooth audio function) with this unit, and confirm the “Audio Streaming” icon lights.
2. Playback Bluetooth audio. Confirm the sound is emitted from this unit when this unit is switched to “BT AUDIO” source.
3. Confirm whether Bluetooth audio can be controlled by operating this unit (the [SEEK+], [SEEK– ] and [PAUSE ] buttons operation).
Note: Varies depending on the connected Bluetooth audio device.
Bluetooth Phone (Hands Free) Function Check
Note: Depending on the connecting device, Signal-strength/Battery-remaining indications might not be displayed. Or, depending on the connecting device, the levels of indications are shown incorrectly.
Even if you see no indications or wrong indications, they are not failures of this unit.
1. Search for this unit from the Bluetooth device (cellular phone), and confirm whether this unit (model name) is displayed.
2. Search for the distance of this unit and the Bluetooth device (cellular phone) about 5 m apart. Confirm whether the Bluetooth device (or this unit) is displayed after it searches.
3. Do the pairing of the cellular phone and this unit (input of passkey).
4. Connect the cellular phone with this unit, and confirm the “HF” icon  lights.
5. Confirm the connection continues even if the distance of the cellular phone and this unit is separated by about 5 m.
6. Set this unit besides the “BT PHONE” source, and call the cellular phone connected with this unit. Confirm the automatic change of this unit into “BT PHONE” source, and the change into the screen for incoming calls. Confirm the ring tone is heard from the front speaker.
7. Take a phone call (press the [CALL] button), and start a conversation. Confirm the other person voice is heard from the speaker.
Speak toward an external microphone at the following condition, and confirm the other party hears its voice (An external microphone is connected).
Compare the sound quality with a normal set. Confirm that there is no big difference.
8. Turn on ACC from off, and confirm whether this unit connects Bluetooth with the cellular phone again.
Note: Depending on the cellular phone, it might not reconnect automatically when ACC is turned on.