Wednesday, February 03, 2016

SONY Bluetooth Audio system WX-GT90BT- GT90BTE - GT99BT – Prior setting – Destination code setting – Initializing Bluetooth – Demo mode cancellation – Bluetooth hand free function check – Bluetooth audio Function check - Power amplifier circuit - TDF8556AJ - Audio system repair and servcie

Category : Car audio Repair and Service 

Contents of this article  

  • Bluetooth function checking 
  • Demo mode cancellation 
  • Power amplifier schematic diagram 


SONY WX-GT90BT- GT90BTE - GT99BT

NOTE THE MAIN BOARD OR SYSTEM CONTROLLER (IC501) REPLACING
When the MAIN board or system controller (IC501) is replaced, the destination setting is necessary.
Prior Setting
It is necessary to set with the remote commander so that it can operate by the main unit.
Setting method:
1. In the state of power on, press the buttons in order of the [4] > [5] > [6] on the remote commander (press only the [6] button for two seconds).
2. Press the buttons in order of the [ > ] - [ < ] - [ENTER] on the remote commander.
3. Press the buttons in order of the [ENTER] (four times) - [Down] - [ENTER] (two times) on the remote commander.
4. Setting is completed, and the unit returns to the state of source off (the clock is displayed on the liquid crystal display).
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 [ 4] - [MIC/ ZAP 5] - [PAUSE 6] (press only the [PAUSE 6] button for two seconds).
2. In the state in which the system controller version is displayed on the liquid crystal display , enter the destination setting mode by pressing the buttons in order of the [Forward  > SEEK+] -  [SEEK–  rewind ] - [PUSH ENTER/MENU/ APP]. (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.
Note: Refer to following “2-3. Entering the Destination Code” for operation method.
4. The resetting operation is executed by pressing the [SOURCE OFF] button for 1 second after the setting ends, and the unit returns to the normal condition.
Display in Destination Setting Mode
Entering the Destination Code
Method of operation by main unit
1. Rotate the control dial, and select the alphanumeric character of “0 to F”.
2. The digit advances by pressing the [PUSH ENTER/MENU/ APP] or [Forward  > SEEK+] button. The digit returns by pressing the [MODE ] or [SEEK– Rewind ] button.
3. The setting is completed by pressing the [PUSH ENTER/ MENU/ APP] button, and the initialization operation is done.
Method of operation by 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 [ 4] - [MIC/ZAP 5] - [PAUSE 6] (press only the [PAUSE 6] button for two seconds).
2. In the state in which the system controller version is displayed on the liquid crystal display (refer to following figure), enter the destination setting value display mode by pressing the [DSPL SCRL] button three times. (Displayed characters/values in the following figure are example)
3. Confirm the alphanumeric character of 12 digits in liquid crystal display is an value correctly input. (Displayed characters/values in the following figure are example)
4. The resetting operation is executed by pressing the [SOURCE OFF] button for 1 second after the confirming ends, and the unit returns to the normal condition.
TEST DISCS
Use following TEST DISC (for CD) when this set confirms the
operation and checks it.
Part No. Description
3-702-101-01 DISC (YEDS-18), TEST
4-225-203-01 DISC (PATD-012), TEST
NOTE FOR REPLACEMENT OF THE BT BOARD
When repairing, the complete BT board should be replaced since any parts in the BT board cannot be repaired.
NOTE FOR REPLACEMENT OF THE SERVO BOARD
When repairing, the complete SERVO board should be replaced since any parts in the SERVO board cannot be repaired.
NOTE FOR REPLACEMENT OF THE SENSOR BOARD
When the SENSOR board is defective, exchange the MECHANICAL BLOCK ASSY.
IMPORTANT NOTE OF “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 the complete BT board or complete MAIN board (including BT board) are replaced, it is necessary to initialize this unit.
Note: Phonebook data and dialed/received call history can be deleted by executing “Reset.”
Initializing Bluetooth Settings
You can initialize all the Bluetooth related settings (pairing information, preset number, device information, etc.) from this unit.
1 Press and hold SOURCE/OFF for 1 second to turn off the power.
2 Press MENU , rotate the control dial until "BT" appears, then press it. The menu list appears.
3 Rotate the control dial to select “BT INIT,” then press it. The confirmation appears.
4 Rotate the control dial to select “INITYES,” then press it. “INITIAL” flashes while initializing the Bluetooth settings; “COMPLETE” appears when initializing has finished.
5 Press (BACK) to return to the previous display.
Note
When disposing of this unit, preset numbers should be deleted with “BT INIT.”
NOTE ON CONNECTION
If speaker and amplifier are not connected correctly, “FAILURE” appears in the display. In this case, make sure the speaker and amplifier are connected correctly.
CANCELLING THE DEMO MODE
You can cancel the demonstration display which appears while this unit is turned off.
1 Press MENU , rotate the control dial until “DISPLAY” appears, then press it.
2 Rotate the control dial until “DEMO” appears, then press it.
3 Rotate the control dial to select “DEMO-OFF,” then press it. The setting is complete.
4 Press (BACK) to return to the previous display.
The display returns to normal reception/ play mode.
BLUETOOTH FUNCTION CHECKING METHOD USING A CELLULAR PHONE
Required Equipment
# Set to be tested (WX-GT90BT/GT90BTE/GT99BT), external microphone of attachment
# Cellular phone (Recommended SEMC W880 or W910i, or select from connectable cellular phones list)
# Bluetooth audio devices (SONY NWZ-A826, or select from connectable cellular phones/audio devices list)
# Speaker connection (at least Front L/R ch)
# DC power supply (12 V)
Preparation
# Confirm the setting of the WX-GT90BT/GT90BTE/GT99BT, and note down it.
# Press the [CALL] button and rotate the control dial until “SET PAIRING” appears, then press it, confirm that the Bluetooth signal icon  is flashing.
# Turn on the Bluetooth function of the cellular phone.
Test Environment
# No other Bluetooth device is making a communication in the periphery (within 20 m).
# No other WX-GT90BT/GT90BTE/GT99BT are supplied with electric power.
# There are no two or more wireless LAN access points in the periphery (with 50 m) (one is OK).
# The set should be tested in a place such as a meeting room, free from ambient noise.
# The speaker at the far end should be in a place such as another meeting room separated acoustically.
Setting
Install the WX-GT90BT/GT90BTE/GT99BT on the desktop

5. Precautions
Beware of the following points when conducting the talking test:
# There is no fault if a talking can be made by adjusting appropriately the volume of the telephone of the other party and the cellular phone connected through the Bluetooth, besides the setup of WX-GT90BT/GT90BTE/GT99BT.
# The speaker’s voice will become loud naturally if the periphery is noisy, or become low if quiet (even though the speaker intents to talk on the same volume level).
# The speaker’s voice will become loud naturally if the other party’s voice is loud.
Bluetooth Phone (Hands Free) Function Check
Note 1: Depending on the connecting device, Signal-strength/Batteryremaining 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 WX-GT90BT/GT90BTE/GT99BT.
1. Search for this unit from the Bluetooth device (cellular phone), and confirm whether this unit (“Sony Automotive”) 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 set connects Bluetooth with the cellular phone again. Note 2: Depending on the cellular phone, it might not reconnect automatically.
Bluetooth Audio Function Check
Note 1: 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 WX-GT90BT/GT- 90BTE/GT99BT, 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 WX-GT90BT/GT- 90BTE/GT99BT.
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 “Bluetooth Audio” source.
3. Confirm whether Bluetooth audio can be controlled by operating this unit (the [SEEK+ Forward ], [Rewind   SEEK–] and [PAUSE 6] buttons operation).
Note 2: Varies depending on the connected Bluetooth audio device.
What to Do after Checking
# After checking, select “BT INIT” from the menu list of this unit to execute initialization. (Connected device information is deleted)
POWER AMPLIFIER CIRCUIT DIAGRAM 
USING IC TDF8556AJ/N5
CLICK ON THE IMAGE TO ZOOM IN