SA-WFS3, SS-FS3 — Sony Audio Service Manual (repair manual)

2009E05-1

© 

2009.05

•  SA-WFS3 is the amplifi er, HDMI, tuner 

and active subwoofer section in HT-FS3.

•  SS-FS3 is the speaker system in HT-FS3.

Photo: SS-FS3

Photo: SA-WFS3

Photo: SS-FS3

This system incorporates Dolby* 
Digital and Pro Logic Surround and 
the DTS** Digital Surround System.

* Manufactured under license from 

Dolby Laboratories.
“Dolby”, “Pro Logic”, and the 
double-D symbol are trademarks 
of Dolby Laboratories.

** Manufactured under license under 

U.S. Patent #'s: 5,451,942; 
5,956,674; 5,974,380; 5,978,762; 

6,487,535 & other U.S. and 
worldwide patents issued & 
pending. DTS and DTS Digital 
Surround are registered trademarks 
and the DTS logos and Symbol are 
trademarks of DTS, Inc. 
© 1996-2008 DTS, Inc. All Rights 
Reserved.

This system incorporates 
High-Definition Multimedia Interface 
(HDMI™) technology.
HDMI, the HDMI logo and 
High-Definition Multimedia Interface 
are trademarks or registered 
trademarks of HDMI Licensing LLC.

“BRAVIA Sync” is a trademark of 
Sony Corporation.

“PLAYSTATION” is a trademark of 
Sony Computer Entertainment Inc.

“S-AIR” and its logo are trademarks 
of Sony Corporation.

“x.v.Colour (x.v.Color)” and 
“x.v.Colour (x.v.Color)” logo are 
trademarks of Sony Corporation.

Digital input formats supported by this system 
are as follows.

* Linear PCM accepts sampling frequencies of no 

more than 48 kHz.

Power output (rated)
L / R:

80 W + 80 W
(at 4 ohms, 1 kHz, 1 % 
THD)

Power output (reference)

RMS output power

L / R:

100 W/ch (per channel at 4 
ohms, 1 kHz, 10 % THD)

Subwoofer:

200 W (at 2 ohms, 100 Hz, 
10 % THD)

Inputs (Analog)
TV

Sensitivity: 550 mV
Impedance: 33 kohms

Inputs (Digital)
TV, DIGITAL 1 Optical
DIGITAL 2 

Coaxial

Dolby Digital

a

DTS

a

Linear PCM (2ch)*

a

Linear PCM (5.1ch, 
7.1ch)* (Only on 
HDMI)

a

Dolby Digital Plus

×

Dolby True HD

×

×

D

H

-

S

T

D

Connector

HDMI

TM

 Connecter

Video inputs/outputs

BD, DVD, SAT/CATV: 
640 × 480p@60 Hz
720 × 480p@59.94/60 Hz
1280 × 720p@59.94/60 Hz
1920 × 1080i@59.94/
60 Hz
1920 × 1080p@59.94/
60 Hz
720 × 576p@50 Hz
1280 × 720p@50 Hz
1920 × 1080i@50 Hz
1920 × 1080p@50 Hz
1920 × 1080p@24 Hz

Audio inputs

BD, DVD, SAT/CATV: 
Linear PCM 7.1ch/
Dolby Digital/DTS

System

PLL quartz-locked digital 
synthesizer

FM tuner section
Tuning range

87.5 – 108.0 MHz
(50 kHz step)

Antenna (aerial)

FM wire antenna (aerial)

Antenna (aerial) terminals 75 ohms, unbalanced
Intermediate frequency

10.7 MHz

AM tuner section
Tuning range

531 kHz – 1,602 kHz (with 
the interval set at 9 kHz)

Antenna (aerial)

AM loop antenna (aerial)

Intermediate frequency

450 kHz

Speaker system

Full range, Bass reflex

Speaker unit

65 mm cone type

Rated impedance

4 ohms

Dimensions (approx.)

102 mm × 163 mm × 77 
mm (with foot) (w/h/d)

Mass (approx.)

0.55 kg

Speaker system

Subwoofer, Bass reflex

Speaker unit

130 mm cone type

Rated impedance

2 ohms

Dimensions (approx.)

212 mm × 374 mm × 364 
mm (w/h/d)

Mass (approx.)

8.9 kg

Power requirements

220 – 240 V AC, 50/60 Hz

Power consumption

On: 95 W
Standby mode: 0.3 W (when “CTRL: HDMI” 

and “S-AIR STBY” are set 
to “OFF.”)

Power output 
(DIGITAL MEDIA PORT) DC OUT: 5 V, 700 mA

Design and specifications are subject to change without 
notice.

s Standby power consumption 0.3 W.

s Halogenated flame retardants are not used in the 

certain printed wiring boards.

s Over 85 % power efficiency of amplifier block is 

achieved with the full digital amplifier, S-Master.

  .............................................   3

2-1. Disassembly 

Flow 

...........................................................   4

2-2. AMP 

Block 

.....................................................................   4

2-3.  Front Panel Block ...........................................................   5
2-4. Bracket 

(TOP) 

.................................................................   7

2-5.  S-AIR Board, Tuner (FM/AM) .......................................   7
2-6. HDMI 

Board 

...................................................................   8

2-7. MAIN 

Board 

...................................................................   9

2-8. POWER 

Board 

................................................................   9

TEST  MODE 

 ............................................................   10

4-1.  Block Diagram - HDMI Section - ...................................   12
4-2.  Block Diagram - INPUT Section - ..................................   13
4-3.  Block Diagram - DSP Section - ......................................   14
4-4.  Block Diagram - AMP, PANEL Section - .......................   15
4-5.  Block Diagram - POWER SUPPLY Section - ................   16
4-6.  Schematic Diagram - HDMI Board (1/2) - .....................   18
4-7.  Schematic Diagram - HDMI Board (2/2) - .....................   19
4-8.  Printed Wiring Board - HDMI Board - ...........................   20
4-9.  Printed Wiring Board - IO Section - ...............................   21
4-10.  Schematic Diagram - IO-DIGITAL Board - ...................   22
4-11.  Schematic Diagram - S-AIR Board - ..............................   23
4-12. Printed Wiring Board 
 

- ANALOG-POMODORO Board - ................................   24

4-13. Schematic Diagram 
 

- ANALOG-POMODORO Board - ................................   25

4-14. Printed Wiring Board 
 

- MAIN Board (Component Side) - ................................   26

4-15. Printed Wiring Board 
 

- MAIN Board (Conductor Side) - ..................................   27

4-16.  Schematic Diagram - MAIN Board (1/6) - .....................   28
4-17.  Schematic Diagram - MAIN Board (2/6) - .....................   29
4-18.  Schematic Diagram - MAIN Board (3/6) - .....................   30
4-19.  Schematic Diagram - MAIN Board (4/6) - .....................   31
4-20.  Schematic Diagram - MAIN Board (5/6) - .....................   32
4-21.  Schematic Diagram - MAIN Board (6/6) - .....................   33
4-22.  Printed Wiring Boards - KEY, SPEAKER Section - ......   34
4-23.  Schematic Diagram - KEY, SPEAKER Section - ...........   35
4-24.  Printed Wiring Board - DISPLAY Board - .....................   36
4-25.  Schematic Diagram - DISPLAY Board - ........................   37
4-26.  Printed Wiring Board - POWER Board - ........................   38
4-27.  Schematic Diagram - POWER Board - ..........................   39

5-1.  Cabinet Section (SA-WFS3) ...........................................   56
5-2.  Front Panel Section (SA-WFS3) .....................................   57
5-3.  AMP Section (SA-WFS3) ...............................................   58
5-4.  Main Section (SA-WFS3) ...............................................   59
5-5.  Chassis Section (SA-WFS3) ...........................................   60
5-6. SS-FS3 

............................................................................  61

  ..............................   62

Accessories are given in the last of the electrical parts list.

NOTES  ON  CHIP  COMPONENT  REPLACEMENT
• 

Never reuse a disconnected chip component.

• 

Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.

COMPONENTS  IDENTIFIED  BY  MARK  0  OR  DOTTED  LINE  
WITH  MARK  0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS 

Note: Refer to page 61 for information of SS-FS3.

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.

• JIG
  When disassembling the set, use the following jig (for speaker 

removal).

  Part No. J-2501-238-A  JIG FOR SPEAKER REMOVAL

 

 

NOTE  OF  CONFIRMING  THE  BOARDS (SA-WFS3)
Protecting is generated when energizing with the heat sink de-
tached. Fix the heat sink to the MAIN board by using the screw 
and the nut without fail when you confi rm the board.

CONFIRMING  THE  POWER  BOARD (SA-WFS3)
The POWER board can be confi rmed by removing the bottom 
plate of the active subwoofer.

NOTE  THE  IC3511  AND  IC3513  ON  THE  HDMI  BOARD  
REPLACING (SA-WFS3)
IC3511 and IC3513 on the HDMI board cannot exchange with sin-
gle. When these parts are damaged, exchange the entire mounted 
board.

NOTE  OF  REPLACING  THE  IC340  AND  IC400  ON  
THE  MAIN  BOARD  AND  THE  COMPLETE  MAIN  
BOARD (SA-WFS3)
When IC340 and IC400 on the MAIN board and the complete 
MAIN board are replaced, it is necessary to spread the compound 
(OIL COMPOUND G777) (Part No. J-2501-335-A ) between the 
main board and the heat sink.
Spread the compound referring to the fi gure below.

CAPACITOR  ELECTORICAL  DISCHARGE  
PROCESSING (SA-WFS3)
When checking the board, for the electric shock prevention, con-
nect the resistors to both ends of respective capacitor (C903) to 
discharge the capacitor (C903).

:/2 W

•  This set can be disassembled in the order shown below.
•  SA-WFS3 only is described in this section.

Note: Follow the disassembly procedure in the numerical order given.

1  five screws (BVTT4 u 20)

3 connector 

5  wire (flat type) 

4 cushion 

2

6 AMP block