BDV-Z7, SA-WSZ7, SS-TSZ7 - Sony Audio Service Manual (repair manual)

2010A05-1

© 

2010.01

•  SA-WSZ7 is the amplifi er and active subwoofer 

section in BDV-Z7.

•  SS-TSZ7 is the speaker system in BDV-Z7.
•  In SA-WSZ7, repair in the state of having con-

nected with HCD-Z7.

Photo: SA-WSZ7

Photo: SS-TSZ7

•  This product incorporates copyright protection technol-

ogy that is protected by U.S. patents and other intellectual 
property rights.

  Use of this copyright protection technology must be autho-

rized by Macrovision, and is intended for home and other 
limited viewing uses only unless otherwise authorized by 
Macrovision.

  Reverse engineering or disassembly is prohibited.
•  This system incorporates with Dolby* Digital and the 

DTS** Digital Surround System.

 

*  Manufactured under license from Dolby Laborato-

ries.

 

 

Dolby 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; 
6,226,616; 6,487,535; 7,392,195; 7,272,567; 
7,333,929; 7,212,872 & other U.S. and worldwide 
patents issued & pending. DTS is a registered trade-
mark and the DTS logos, Symbol, DTS-HD and 
DTS-HD Master Audio | Essential are trademarks 
of DTS, Inc. © 1996-2008 DTS, Inc. All Rights 
Reserved.

•  This system incorporates High-Defi nition Multimedia 

Interface (HDMITM) technology.

  HDMI, the HDMI logo and High-Defi nition Multimedia 

Interface are trademarks or registered trademarks of HDMI 
Licensing LLC.

•  Java and all Java-based trademarks and logos are trade-

marks or registered trademarks of Sun Microsystems, Inc.

•  “BD-Live” and “BonusView” are trademarks of Bluray 

Disc Association.

•  “Blu-ray Disc” is a trademark.
•  “Blu-ray Disc,” “DVD+RW,” “DVD-RW,” “DVD+R,” 

“DVD-R,” “DVD VIDEO,” and “CD” logos are trade-
marks.

•  “BRAVIA” is a trademark of Sony Corporation.
•  “AVCHD” and the “AVCHD” logo are trademarks of Mat-

sushita Electric Industrial Co., Ltd. and Sony Corporation.

• 

, “XMB,” and “xross media bar” are trademarks of 

Sony Corporation and Sony Computer Entertainment Inc.

•  “PLAYSTATION” is a trademark of Sony Computer 

Entertainment Inc.

•  “x.v.Colour” and “x.v.Colour” logo are trademarks of Sony 

Corporation.

•  “PhotoTV HD” and the “PhotoTV HD” logo are trade-

marks of Sony Corporation.

•  Other system and product names are generally trademarks 

or registered trademarks of the manufacturers. ™ and ® 
marks are not indicated in this document.

Power output (rated)

Front*: 80 W + 80 W 
(at 4 ohms, 1 kHz, 
1% THD)
Subwoofer*: 108 W 
(at 3 ohms, 100 Hz, 
1% THD)

RMS output power (reference)

Front*: 105 W (per 
channel at 4 ohms, 1 kHz, 
10% THD)
Subwoofer*: 140 W 
(at 3 ohms, 100 Hz, 
10% THD)

Inputs (Analog)
AUDIO

Sensitivity: 450/250 mV

Inputs (Digital)
SAT/CABLE (COAXIAL)

Impedance: 75 ohms

Speaker system

2-Way 3-Driver speaker 
system Bass reflex

Speaker unit

Woofer: 50 mm cone type 
× 2
Tweeter: 20 mm cone type

Rated impedance

4 ohms

Dimensions (approx.)

81 mm × 265 mm × 
130 mm (w/h/d) 
81 mm × 265 mm × 95 mm 
(w/h/d) with adjustable 
support

Mass (approx.)

0.91 kg

Power requirements 

220 V – 240 V AC, 
50/60 Hz

Power consumption

On: 110 W
Standby: 0.3 W (at the 
Power Saving mode) 

Speaker system

Subwoofer Bass reflex

Speaker unit

160 mm cone type

Rated impedance

3 ohms

Dimensions (approx.)

187 mm × 445 mm × 
340 mm (w/h/d)

Mass (approx.)

9.4 kg

Design and specifications are subject to change 
without notice.

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

2-1.   Disassembly Flow (SA-WSZ7) ......................................   6
2-2.  AMP Block (SA-WSZ7) .................................................   6
2-3.  Top (WS) Cover (SA-WSZ7) .........................................   7
2-4.  CONTROL Board (SA-WSZ7) ......................................   7
2-5  AMP-POWER Board (SA-WSZ7) .................................   8

3-1.  Block Diagram - MAIN Section - ...................................   9
3-2.  Block Diagram - POWER SUPPLY Section - ................   10
3-3.  Printed Wiring Board - CONNECTOR Board - .............   12
3-4.  Schematic Diagram - CONNECTOR Board - ................   12
3-5.  Printed Wiring Board - CONTROL Board - ...................   13
3-6.  Schematic Diagram - CONTROL Board (1/2) - .............   14
3-7.  Schematic Diagram - CONTROL Board (2/2) - .............   15
3-8. Printed 

Wiring 

Board 

 

- AMP-POWER Board (Component Side) - ...................   16

3-9. Printed 

Wiring 

Board 

 

- AMP-POWER Board (Conductor Side) - .....................   17

3-10.  Schematic Diagram - AMP-POWER Board (1/2) - ........   18
3-11.  Schematic Diagram - AMP-POWER Board (2/2) - ........   19

4-1.  Speaker Cabinet Section (SA-WSZ7) .............................   25
4-2.  AMP Section (SA-WSZ7) ..............................................   26
4-3.  AMP-POWER Board Section (SA-WSZ7) ....................   27
4-4. SS-TSZ7 

..........................................................................  28

  ..............................   29

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.

0  OR  DOTTED  LINE  

0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  

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.

BEGIN  IT  BEFORE  THE  REPAIR (SA-WSZ7)
When the SA-WSZ7 is checked, connect to HCD-Z7 (for Blu-ray 
disc/DVD receiver of BDV-Z7). Be sure in advance the HCD-Z7 
is prepared.

NOTE  OF  WHEN  OPERATION  OF  THE  SET  IS  CON-
FIRMED (SA-WSZ7)
This set displays the protector when the fan stops for ten seconds 
or more, and operation is stopped.
Do not remove, and stop the fan when you confi rm the operation.

NOTE  THE  IC1165  ON  THE  AMP-POWER  BOARD  
REPLACING (SA-WSZ7)
IC1165 on the AMP-POWER board cannot exchange with single. 
When this part is damaged, exchange the entire mounted board.

CAPACITOR  ELECTRICAL  DISCHARGE  PROCESSING 
(SA-WSZ7)
When checking the board, for the electric shock prevention, con-
nect the resistors to both ends of respective capacitor (C1009) or 
between 

1 – 2 pins of CN1111 and CN1521 to discharge the 

capacitors (C1009, C1105, C1106, C1115, C1426, C1446, C1466).

:/2 W

:/2 W

:/2 W

FIXING  ELECTRICAL  PARTS  WITH  A  BOARD (SA-WSZ7)
If the AMP-POWER and CONTROL boards were replaced, or if the target parts listed below were replaced, the parts must be fi xed to the 
board using the specifi ed bond.

AMP-POWER

A-1709-232-A

CONTROL

A-1709-239-A

AMP-POWER

C1006, C1015, C1016, C1021, C1065

CONTROL

A701

• Use bond
Part No. 7-432-912-48 BOND, SONY (SC608LV)