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2009A00-1

© 

2009.01

Speaker system

57 mm, Full range, magnetically
shielded

Enclosure type

Bass reflex

Impedance

4

Ω

Rated input power

20 W

Maximum input power

40 W

Rated output

20 W + 20 W
(10 % T.H.D., 1 kHz, 4

Ω)

Input

Stereo mini jack 

× 2

Input impedance

4.7 k

Ω (at 1 kHz)

Power

DC 16 V (supplied AC power adaptor)

Dimensions (w/h/d)

Approx. 80 

× 187 × 169 mm

(3

1

/

4

× 7

3

/

8

× 6

3

/

4

in.)

Mass

Approx. 1,200 g (2 lb. 11 oz.) (left
speaker)
Approx. 1,100 g (2 lb. 7 oz.) (right
speaker)

AC power adaptor (1)
Mains lead (1)
Connecting cord (stereo-mini plug 

Z stereo-mini plug, 1 m) (1)

Card Remote Commander (1)
Operating Instructions (1)
Warranty (1)

The warranty is not provided in some areas.

Design and specifications are subject to change without notice.

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

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

3-1. Disassembly 

Flow 

...........................................................   5

3-2. Speaker 

(057F036) 

..........................................................   6

3-3. Cabinet 

Acoustic 

Absorbent 

............................................   6

3-4.  Rear Cabinet (foot-L) Assy, Speaker Cable Assy ...........   7
3-5. DSP 

Board.......................................................................   7

3-6.  AMP Board, CONTROL Board ......................................   8
3-7.  Cabinet (foot-L) Assy, Speaker L Lead ..........................   8
3-8.  Rear Cabinet (foot-R) Assy, RCH Board ........................   9
3-9.  Cabinet (foot-R) Assy, Speaker R Lead ..........................   9
3-10.  Arrange the Shape of the Speaker L/R Lead ..................   10
3-11.  Arrange the Shape of the Speaker Cable Assy 
 

(for Left Speaker) ............................................................   10

4-1. Block 

Diagram 

................................................................  11 

4-2.  Printed Wiring Board - DSP Board - ..............................   13
4-3.  Schematic Diagram - DSP Board (1/2) - ........................   14
4-4.  Schematic Diagram - DSP Board (2/2) - ........................   15
4-5.  Printed Wiring Board - CONTROL Board - ...................   16
4-6.  Schematic Diagram - CONTROL Board - ......................   17
4-7.  Printed Wiring Boards - AMP Section -..........................   18
4-8.  Schematic Diagram - AMP Section - ..............................   19

5-1.  Left Speaker Section .......................................................   26
5-2.  Right Speaker Section .....................................................   27

  ..............................   28

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.

Flexible Circuit Board Repairing
• 

Keep the temperature of soldering iron around 270 °C during 
repairing.

• 

Do not touch the soldering iron on the same conductor of the 
circuit board (within 3 times).

• 

Be careful not to apply force on the conductor when soldering 
or unsoldering.

Notes on the AC power adaptor
• Use only the supplied AC power adaptor. Do not use any

other AC power adaptor to avoid damaging the speaker.

• Before connecting or disconnecting the AC power adaptor,

turn off the system. Otherwise, it may cause a malfunction.

CAUTION
Danger of explosion if battery is incorrectly replaced. Replace only with 
the same or equivalent type.

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 

LES  COMPOSANTS  IDENTIFIÉS  PAR  UNE  MARQUE  0 SUR  
LES  DIAGRAMMES  SCHÉMATIQUES  ET  LA  LISTE  DES  
PIÈCES  SONT  CRITIQUES  POUR  LA  SÉCURITÉ  DE  FONC-
TIONNEMENT.  NE  REMPLACER  CES  COM-  POSANTS  QUE  
PAR  DES  PIÈCES  SONY  DONT  LES  NUMÉROS  SONT  DON-
NÉS  DANS  CE  MANUEL  OU  DANS  LES  SUPPLÉMENTS  
PUBLIÉS  PAR  SONY.

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  THE  IC401  AND  IC403  ON  THE  DSP  BOARD  
REPLACING
IC401 and IC403 cannot exchange with single. When IC401 and 
IC403 are damaged, exchange the entire mounted board.

NOTE  THE  IC801  ON  THE  CONTROL  BOARD  RE-
PLACING
IC801 cannot exchange with single. When IC801 is damaged,
exchange the entire mounted board.

NOTE  THE  IC351  ON  THE  AMP  BOARD  REPLAC-
ING
IC351 cannot exchange with single. When IC351 is damaged,
exchange the entire mounted board.

This section is extracted 
from instruction manual.

"

Identifying parts

Front

(See fig. "-)

  (power) indicator/button
  (muting) indicator
 VOL (volume) +/– button
 Remote sensor
 Speaker grille

The speaker grille can be removed.

Rear

(See fig. "-)

 Speaker connecting port
 DC IN 16V jack
 INPUT 1 (audio input) jack
 INPUT 2 (audio input) jack
 Speaker connecting cord

Connect the right speaker.

Card remote commander

(See fig. "-)

  (muting)  button
 VOL (volume) +/– buttons
  (power) button

The operating distance of the card remote commander is approx.
5 m in maximum.