Thursday, February 04, 2016

SONY SOUND BAR WITH WIRELESS SUBWOOFER - HT-NT3 - SA-NT3 – Servcie mode – test mode – factory reset – amp test mode – power amplifier circuit diagram – Audio system repair and service

Category: Audio system Repair and Service 

Contents of this article 

  • Service mode access
  • Test modes
  • Power amp circuit diagram 


SONY  HT-NT3 - SA-NT3 

NOTE OF DELETING THE PRODUCT REGISTRATION ON SEN (INTERNET MUSIC SERVICES)
It is needed to delete the product registration on SEN (Internet Music Services) by checking the “Device ID” which have 12 digits hexadecimal number. The procedure of checking “Device ID” can be followed as below:
1. Press [HOME] button of the remote commander, the message “HOME” appears.
2. Select “Setup” and press [ENTER ] button.
3. Select “System Settings” and press [ENTER ] button.
4. Select “System Information” and press [ ENTER] button.
5. Device ID will shown on the display.
Device ID: XXXX XXXX XXXX (12 digits hexadecimal number).
If it is needed to delete the customer’s registration, please contact the Service Headquarter with Device ID information.
NOTE OF REPLACING THE COMPLETE MB-1407 BOARD OR CARD WLAN/BT COMBO
When the complete MB-1407 board or CARD WLAN/BT COMBO are replaced, please execute the below service mode.
Procedure:
[Home menu > Setup > Resetting > Reset to Factory Default Settings > All Settings]
Next, go to service menu and execute “[1] Bluetooth Enable” and “[3] Write Bluetooth device address to Registry”.
Finally check one touch NFC listening function at normal power on.
Note: The operation in this mode must use a remote commander and TV monitor.
1. Connect this unit with TV monitor.
2. Press the [POWER] button to turn the power on.
3. Press button in order of the [STOP] > [DISPLAY] > [PAUSE] > [UP] on the remote commander.
(Make the interval when each button is pressed within two seconds)
4. Enter the SVC service mode. The OSD menu on TV monitor can be operated by remote commander.
5. Press [DOWN] and Enter Diag.
6. Press [RIGHT] and Enter Bluetooth Device Test (Screen 1).
7. Enter [1] Bluetooth Enable, wait until the display show “ Status : Bluetooth Enable Successful ” (Screen 2).
8. Enter [3] Write Bluetooth device address to Registry, wait until the display show “Bluetooth Device Address” and “Status : Write Successfull” (Screen 3).
9. Press the [RETURN] button on the remote commander to select “Wireless LAN Test”. (Screen 4)
10. Press the [ ENTER] button on the remote commander to select “[5] Write P2P address to Registry”.
11. Press the [ENTER ] button on the remote commander, wait until the display show “Status: Write Successful!” (Screen 5).
12. Press the [DOWN] button on the remote commander to select “[6] P2P Registry Check”.
13. Press the [ENTER] button on the remote commander to check the P2P devise address is the same as shown in Screen 5. (Displayed chracters/values in the following figure are example)
14. Press the [BACK] button on the remote commander and select Factory Initialize. (go to Screen 7)
15. The set will turn off automatically.
TEST MODE
COLD RESET
The cold reset clears certain data in this system without initialize
Personal Information and some operation data.
Execute this mode when returning the unit to the customers.
Procedure:
1. Press the [POWER] button on the main unit to turn the power on.
2. Press the [POWER] button and [VOL -] button on the main unit simultaneously for five seconds.
3. The message “WAIT” appears and then “RESET” appears on the fluorescent indicator tube, then becomes standby states.
PANEL TEST
Procedure:
1. Press the [POWER] button on the main unit to turn the power on.
2. Press button in order of the [STOP] > [DISPLAY] > [UP] > [DOWN] on the remote commander.
(Make the interval when each button is pressed within two seconds).
3. All segments in fluorescent indicator tube are lighted up and then is dimmed after a second.
4. In the state of step 3, press the [INPUT +] button on the remote commander and “K 0” is displayed on the fluorescent indicator tube.
5. In the state of step 4, press the [VOL +] button on the remote commander and “SZ_A” is displayed on the fluorescent indicator tube.
6. In the state of step 5, press the [VOL -] button on the remote commander and all segments in fluorescent indicator tube are lighted up and then is dimmed after a second.
7. In the state of step 6, press the [STOP] button on the remote commander and “1 24” is displayed on the fluorescent indicator tube.
Releasing method:
To release from this mode, press the [?/1] button on the main unit or press the [POWER] button on the remote commander.
AMP TEST
Procedure:
1. Touch the [POWER] touch key on the main unit to turn the power on.
2. Press button in order of the [STOP] > [DISPLAY] > [VOL -] > [UP] on the remote commander.
The messsage “MSURE” is displayed on the fluorescent indicator tube.
3. In the state of step 2, press [DIMMER] button on the remote commander. The message will appear in order of the “FULL” > “THRU” > “F2S” > “F2SB” > “F2CW” on the fluorescent indicator tube.
4. In the state of step 3, press [m] button on the remote commander.
The message will appear in order of the “A.OFF” > “A.ON” on the fluorescent indicator tube.
5. In the state of step 4, press [%] button on the remote commander.
The message will appear in order of the “V.N” > “V.MSM” on the fluorescent indicator tube.
6. In the state of step 5, press [CLEARAUDIO+] button on the remote commander.
The message will appear in order of the “VAON” > “VAOFF” on the fluorescent indicator tube.
7. In the state of step 6, press [VOICE] button on the remote commander to adjust the volume gain. It can be adjusted between -3.0 to +3.0 (increase everytime 0.1 step).
Eg: When gain +1.0 dB by pressing the [VOICE] button, the message “G +1.0” will appear on the fluorescent indicator tube.
8. In the state of step 7, press [NIGHT] button on the remote commander to adjust the volume gain. It can be adjusted between +3.0 to -3.0 (decrease everytime 0.1 step).
Eg: When gain -1.0 dB by pressing the [NIGHT] button, the message “G -1.0” will appear on the fluorescent indicator tube.
WIRELESS SOUND TEST MODE
It can display the μ-com version of Subwoofer (SA-WNT3).
Note :More than one item may be displayed on the fluorescent indicator tube, but it is not used for the servicing other than “VER”.
Preparation:
# Prepare the remote commander attached to this unit.
Remote commander:
RM-AH110U (US and Canadian models)
RM-AH110E (Except US and Canadian models)
# Connect the Bar Speaker (SA-NT3) and the Subwoofer (SA-WNT3) by wireless.
Procedure:
1. Press button in order of the [STOP] > [DISPLAY] > [CLEAR AUDIO+] >  [UP] on the remote commander.
2. The message “FACTR” is displayed on the fluorescent indicator tube and enter the wireless sound test mode.
3. Press the [UP]/[DOWN] buttons on the remote commander, select the “VER”, and press the [ ENTER ] button on the remote commander.
4. The μ-com version of Subwoofer (SA-WNT3) is displayed on the fluorescent indicator tube. For example, 0.12A.
5. When [UP]/[DOWN] buttons on the remote commander is pressed while the μ-com version of Subwoofer (SA-WNT3) is displayed on the fluorescent indicator tube, year, month and day of the creation is displayed on the fluorescent indicator tube. For example, 41027.
When [UP]/[DOWN] buttons on the remote commander is pressed again, the display returns to the μ-com version of Subwoofer
(SA-WNT3) display.
Releasing method:
Press the [POWER] button to release the test mode menu.
WIRELESS SOUND COLD RESET
It can initialize various backup information of Subwoofer (SAWNT3).
Preparation:
Connect the Bar Speaker (SA-NT3) and the Subwoofer (SAWNT3)
Procedure:
1. Press button in order of the [STOP] > [DISPLAY] > [BACK] > [UP] on the remote commander.
2. The power indicator LED on the Subwoofer (SA-WNT3) turns as below.
For secure link : orange (light up) -> red (flashing) -> orange (light up)
For normal link : green (light up) -> red (flashing) -> orange (light up)
3. Pull out the power cord on the Subwoofer (SA-WNT3) from
an outlet and insert the power cord again.
FACTORY INITIALIZE
Return all of the unit setting to their factory defaults.
Note 1: Disconnect the following connections when you use this mode.
USB
Note 2: The operation in this mode must use a remote commander and TV monitor.
Procedure:
1. Press the [POWER] button to turn the power on.
2. Press the [HOME] button on the remote commander, and the home menu is displayed.
3. Select “Setup” > “Resetting”, and press the [ENTER ] button on the remote commander.
4. Select “Initialize Personal Information”, and press the [ENTER ] button on the remote commander.
5. Select “OK”, and press the [ ENTER ] button on the remote commander.
6. The message “Close” appears, and press the [ ENTER ] button on the remote commander.
7. Select “Reset to Factory Default Settings”, and press the [ ENTER ] button on the remote commander.
8. Select “All Settings”, and press the [ ENTER ] button on the remote commander.
9. Select “Start”, and press the [ ENTER ] button on the remote commander.
10. Initialization ends when the message “HELLO” on the fluorescent indicator tube disappears.
SVC SERVICE MODE
Note: The operation in this mode must use a remote commander and TV monitor.
Setting method of the SVC service mode:
1. Connect this unit with the TV monitor.
2. Press the [POWER] button on the main unit to turn the power on.
3. Press button in order of the [STOP] > [DISPLAY] > [PAUSE] > [UP] on the remote commander.
(Make the interval when each button is pressed within two seconds).
4. The message “SVC” displayed on the fluorescent indicator tube. The OSD menu on TV monitor can be operated by the remote commander.

POWER AMPLIFIER SCHEMATIC DIAGRAM 
USING ICs TAS5534DGGR - TAS5614LA
CLICK ON THE IMAGE TO ZOOM IN