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UNLEADED  SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution:  Some printed circuit boards may not come printed with 

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.
•  Unleaded solder melts at a temperature about 40 °C higher 

than ordinary solder.

 

Ordinary soldering irons can be used but the iron tip has to be 
applied to the solder joint for a slightly longer time.

 

Soldering irons using a temperature regulator should be set to 
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if 

the heated tip is applied for too long, so be careful!

• Strong 

viscosity

 

Unleaded solder is more viscous (sticky, less prone to fl ow) 
than ordinary solder so use caution not to let solder bridges 
occur such as on IC pins, etc.

• 

Usable with ordinary solder

 

It is best to use only unleaded solder but unleaded solder may 
also be added to ordinary solder.

NOTE  OF  PERFORMING  THE  OPERATION  CHECK  IN  
THE  STATE  THAT  HEAT  SINK  WAS  REMOVED
When performing the operation check in the state that this unit was 
disassembled, it is possible to perform the operation check in the 
state that heat sink was removed. But don’t perform the operation 
check in the long time, and perform the operation check in the 
volume state as low as possible.

CAPACITOR  ELECTRICAL  DISCHARGE  PROCESSING 
When checking the board, for the electric shock prevention, con-
nect the resistors to both ends of respective capacitor to discharge 
the capacitor.

:/2 W

:/2 W

MODEL  IDENTIFICATION
Distinguish by Part No. and Destination code on the rear side of 
a main unit.

Destination code

Part No.

US and Canadian models

4-562-118-0[]

(UC2)

AEP model

4-562-118-2[]

(CEL)

UK model

4-562-118-3[]

(CEK)

Russian model

4-562-118-4[]

(RU3)

Singapore model

4-562-118-7[]

(SP1)

Chinese model

4-562-118-8[]

(CN4)

Australian model

4-562-118-9[]

(AU1)

Taiwan model

4-562-119-1[]

(TW2)

Latin American model

4-562-119-2[]

(LA9)

DESTINATION  ABBREVIATIONS
The following abbreviations for model destinations are used in this 
service manual.

• Abbreviations
 AUS : 

Australian 

model

  CH 

: Chinese model

  CND  : Canadian model
  LA 

: Latin American model

  RU 

: Russian model

  SP 

: Singapore model

 TW  : 

Taiwan 

model

ADVANCE  PREPARATION  WHEN  CONFIRMING  OP-
ERATION
All of the units included in the HT-ST9 (SA-ST9/SA-WST9/Re-
mote control) are required to confi rming operation of SA-ST9. 
Check in advance that you have all of the units.

NOTE  OF  REPAIRING  THE  REPEATER_REP1, RE-
PEATER_REP2  OR  KEY  BOARDS
When the REPEATER_REP1, REPEATER_REP2 or KEY boards 
installed by this unit are defective, replace the complete mounted 
board.
The mounted parts cannot replace with single.

NOTE  OF  REPAIRING  THE  MB1406  BOARD
When MB1406 board installed by this unit are defective, replace 
the complete mounted board.
The mounted parts cannot replace with single.
Block diagram and printed wiring board that have been described 
on this service manual are for reference.
Schematic diagram have not described.

NOTE  OF  REPLACING  THE  IC7004, IC7005, IC7007  
AND  IC7008  ON  THE  AMP  BOARD  AND  THE  COM-
PLETE  AMP  BOARD
When IC7004, IC7005, IC7007 and IC7008 on the AMP board and 
the complete AMP board are replaced, it is necessary to spread the 
compound between the AMP board and the heat sink.
Spread the compound referring to the fi gure below.

BOARD  OR  CARD  WLAN/BT  COMBO
When the complete MB1406 board or card WLAN/BT combo is 
replaced, you must perform the following item.

When replacing the complete MB1406 board:
•  NETWORK INFORMATION WRITING AND CHECKING 

OF NETWORK/NFC OPERATION (refer to this page)

• 

NOTICE OF MAC ADDRESS CHANGE TO CUSTOMERS 
(refer to page 8)

•  NOTES ON THE WIRELESS CONNECTION (LINK) AF-

TER REPAIRS ARE COMPLETE (refer to page 8)

When replacing the card WLAN/BT combo:
•  NETWORK INFORMATION WRITING AND CHECKING 

OF NETWORK/NFC OPERATION (refer to this page)

• 

NOTICE OF MAC ADDRESS CHANGE TO CUSTOMERS 
(refer to page 8)

NETWORK  INFORMATION  WRITING  AND  CHECKING  
OF  NETWORK/NFC  OPERATION
When the complete MB1406 board or card WLAN/BT combo are 
replaced, execute the below BD service mode. And check the op-
eration of wireless/wired LAN and NFC.

Procedure:
1.  Connect this unit with TV monitor.
2.  Press the [

@

/1

] button to turn the power on.

3.  Press button in order of the [

x

] → [DISPLAY] → [

X

] → [

V] 

on the remote commander.

 

(Make the interval when each button is pressed within one sec-
ond)

4.  Enter the BD service mode. The OSD menu on TV monitor 

can be operated by remote commander.

5.  Press the [

v] button on the remote commander to select 

“Diag”, and press the [ ] button on the remote commander.

6.  Press the [

b] button on the remote commander to select “Wire-

less LAN Test”. (Screen 1)

7.  Press the [

v] button on the remote commander to select “[5] 

Write P2P address to Registry”.

8.  Press the [ ] button on the remote commander, wait until the 

display show “Status: Write Successful!” (Screen 2).

9.  Press the [BACK] button on the remote commander to return 

to category select screen, and press the [

b] button on the re-

mote commander to select “Bluetooth Device Test”. (Screen 3)

10. Press the [ ] button on the remote commander to select “(1) 

Bluetooth Enable”.

11. Press the [ ] button on the remote commander, wait until the 

display show “Status: Bluetooth Enable Successful!” (Screen 
4).

12. Press the [

v] button on the remote commander to select “(3) 

Write Bluetooth device address to Registry”.

13. Press the [ ] button on the remote commander, wait until the 

display show “Status: Write Successful!” (Screen 5).

14. Press the [

@

/1

] button to turn the power off.

 Diag

 Diag
Category:            Wireless LAN Test

 Diag

 Diag
Category:            Bluetooth Device Test

– Continued on next page –

Necessary Equipment:
•  Access point supporting WPS

Procedure:
1.  Connect this unit with TV monitor.
2.  Press the [

@

/1

] button to turn the power on.

3.  Press the [HOME] button on the remote commander, display 

the home screen.

4. Press the [V]/[v] buttons on the remote commander to select 

the “Setup”, and press the [ ] button on the remote command-
er.

5. Press the [V]/[v] buttons on the remote commander to select 

the “Network Settings”, and press the [ ] button on the remote 
commander.

6. Press the [V]/[v] buttons on the remote commander to select 

the “Internet Settings”, and press the [ ] button on the remote 
commander.

7. Press the [V]/[v] buttons on the remote commander to select 

the “Wireless Setup(built-in)”, and press the [b] button on the 

remote commander.

8. Press the [V]/[v] buttons on the remote commander to select 

the “Wi-Fi Protected Setup (WPS)”, and press the [b] button 

on the remote commander.

9.  The “Start” screen is display, and press the [WPS] key on the 

access point.

10. Press the [b] button on the remote commander, setup is start.

11.  The message “Next, check the network connection” is display, 

and press the [b] button on the remote commander.

12. When wireless LAN connection is completed, “Wireless Con-

nection: OK” and “Internet Access: OK” is displayed.

 Refer to the instruction manual about details of the setting method.

Necessary Equipment:
• Router
•  Network LAN cable

Procedure:
1.  Connect this unit with TV monitor.
2.  Connect the unit to the router with the network LAN cable.
3.  Press the [

@

/1

] button to turn the power on.

4.  Press the [HOME] button on the remote commander, display 

the home screen.

5. Press the [V]/[v] buttons on the remote commander to select 

the “Setup”, and press the [ ] button on the remote command-
er.

6. Press the [V]/[v] buttons on the remote commander to select 

the “Network Settings”, and press the [ ] button on the remote 
commander.

7. Press the [V]/[v] buttons on the remote commander to select 

the “Internet Settings”, and press the [ ] button on the remote 
commander.

8. Press the [V]/[v] buttons on the remote commander to select 

the “Wired Setup”, and press the [b] button on the remote 

commander.

9. Press the [V]/[v] buttons on the remote commander to select 

the “Auto”, and press the [b] button on the remote command-

er.

10. The “The network will be confi gured with the following set-

tings” screen is display, and press the [b] button on the remote 

commander.

11. Press the [V]/[v] buttons on the remote commander to select 

the “Save & Connect”, and press the [ ] button on the remote 
commander.

12.  When wired LAN connection is completed, “Physical Connec-

tion: OK” and “Internet Access: OK” is displayed.

 Refer to the instruction manual about details of the setting method.

Necessary Equipment:
Smartphones, tablets, or music players with the NFC function built-in
(OS: Android™ 2.3.3 or later, excluding Android 3.x)

Procedure:
1.  Press the [

@

/1

] button to turn the power on.

2.  Touch the N mark of the Bar Speaker with the Bluetooth de-

vice.

Bluetooth indicator (blue)

3.  Make sure that the indicator (blue) of the Bar Speaker lights 

up. (This indicates that a connection has been established)

4.  Start playback of an audio source on the Bluetooth device.

 After checking of NFC operation, be sure to delete the pairing infor-

mation before returning this unit to the customer.

5. Factory initialize
Return all of the unit setting to their factory defaults.

 Disconnect the following connections when you use this mode.

 

   

 USB

 

   

 LAN

 

   

 HDMI IN 1

 

   

 HDMI IN 2

 

   

 HDMI IN 3

 The operation in this mode must use a remote commander and TV 

monitor.

Procedure:
1.  Connect this unit with TV monitor.
2.  Press the [

?/1

] button to turn the power on.

3.  Press the [HOME] button on the remote commander, and the 

home menu is displayed.

4.  Press the [V]/[v] buttons on the remote commander to select the 

“Setup”, and press the [ ] button on the remote commander.

5.  Press the [V]/[v] buttons on the remote commander to select 

the “Resetting”, and press the [ ] button on the remote com-
mander.

Setup

Resetting

Easy Network Settings

Easy Setup

Input Skip Setting

– Continued on next page –

6.  Select “Reset to Factory Default Settings”, and press the [

] 

button on the remote commander.

Setup

Reset to Factory Default Settings

Restor each setting to the factory setting.

Initialize Personal Information

7.  Press the [

V]/[v] buttons on the remote commander to select 

the “All Settings”, and press the [ ] button on the remote com-
mander.

Reset to Factory Default Settings

Audio Settings
Bluetooth Settings
System Settings
Input Skip Settings
Network Settings
All Settings

8.  Press the [

B]/[b] buttons on the remote commander to select 

the “Start”, and press the [ ] button on the remote commander.

All Settings

Restore all settings to the factory default
settings. The system will turn off after
reset.

Start

Cancel

9.  Turn the power off automatically, and initialization ends.

NOTICE  OF  MAC  ADDRESS  CHANGE  TO  CUSTOM-
ERS
When the MB1406 board or card WLAN/BT combo is replaced, 
the MAC address has been changed.
Print the following explanations, and pass it to the customer with 
the repaired unit when you return the customer repaired unit.

Note of the MAC address change:
The MAC address of this unit was changed along with this repair.
Please set it again if you are using the MAC address fi ltering function 
of access point device of connection destination.
MAC address can be confi rmed from the settings menu screen of this 
unit. Please refer to the “Settings and Adjustment” of Operating In-
structions for details.

NOTES  ON  THE  WIRELESS  CONNECTION (LINK)  AF-
TER   REPAIRS  ARE  COMPLETE
When the following replacing repair is performed, the link of the 
Bar speaker (SA-ST9) and Subwoofer (SA-WST9) is cut.
Return the Bar speaker (SA-ST9) and Subwoofer (SA-WST9) to 
the customer after performing the link according to the following 
procedure.

Parts in which the LINK will be disconnected due to replacement:
• 

Complete MB1406 board

Link method:
When you turn on the Bar speaker (SA-ST9) and Subwoofer (SA-
WST9), and then automatically link.
If do not to link, there is a possibility that the customer is perform 
the secure link. In that case, perform the following procedure.

Press SECURE LINK on the rear of the subwoofer.
Proceed to the next step within a few minutes.

Select [Start].
To return to the previous display, select [Cancel].

After the message [Secure Link setting is complete.] appears, 
press .
The on/standby indicator on the subwoofer lights in orange.
If the message [Cannot set Secure Link.] appears, follow the on-
screen instructions.

Note: If customer had perform a secure link, only the Bar speaker is 

brought in for repair and the MB1406 board is replaced, be sure to 
inform the customer when returning the repaired products that the 
customer must secure link again the Bar speaker and Subwoofer.

 

  (Indicate that the secure link procedure is described in the operating 

instructions)

Press 

 (on/standby) to turn off the system. After the indicator 

disappears, disconnect the AC power cord (mains lead) and make 
sure nothing is obstructing the ventilation holes of the system.