SA-WCT260 — Sony Audio Service Manual (repair manual)

Model
SA-WCT260
Pages
32
Size
2.55 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
sa-wct260.pdf
Date

View Sony SA-WCT260 Service Manual online

SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
SA-WCT260
SPECIFICATIONS
ACTIVE SUBWOOFER
9-893-526-02
2012J33-1
© 
2012.10
US Model
Canadian Model
AEP Model
UK Model
Australian Model
Brazilian Model
Singapore Model
Ver. 1.1  2012.10
•  SA-WCT260 is the active subwoofer in HT-CT260/
CT260HP.
•  All of the units included in the HT-CT260/CT260HP 
(SA-WCT260/SA-CT260/EZW-RT50) are required 
to confi rming operation of the main unit. Check in 
advance that you have all of the units.
•  For the TEST MODE for this unit, refer to the service manual of SA-CT260.
This model incorporates Dolby* Digital and 
Pro Logic Sound 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 Nos: 5,956,674; 5,974,380; 
6,487,535 & other U.S. and worldwide 
patents issued & pending. DTS, the 
Symbol, & DTS and the Symbol together 
are registered trademarks & DTS Digital 
Surround and the DTS logos are 
trademarks of DTS, Inc. Product includes 
software. © DTS, Inc. All Rights 
Reserved.
The Bluetooth
®
 word mark and logos are 
registered trademarks owned by Bluetooth 
SIG, Inc. and any use of such marks by Sony 
Corporation is under license.
Other trademarks and trade names are those of 
their respective owners.
Copyrights
POWER OUTPUT (reference)
130 W (per channel at 4 ohms, 100 Hz)
Speaker system
Subwoofer, Bass reflex
Speaker unit
130 mm (5 1/8 in) cone type
Rated impedance
4 ohms
Power requirements
120 V AC, 60 Hz (US and Canadian models)
220 V - 240 V AC, 50/60 Hz (AEP, Russian,
 UK, Australian and Singapore models)
110 V - 240 V CA, 50/60 Hz (Brazilian model)
Power consumption
On: 30 W
Standby mode: 0.5 W or less
Dimensions (approx.)
271 mm × 390 mm × 271 mm (10 3/4 in 
× 15 3/8 in × 10 3/4 in) (w/h/d)
Mass (approx.)
7.2 kg (15 lb 4 oz)
Design and specifications are subject to 
change without notice.
s Standby power consumption 0.5 W or 
less.
s Over 85 % power efficiency of amplifier 
block is achieved with the full digital 
amplifier, S-Master.
SA-WCT260
2
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.
SAFETY  CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, 
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE  TEST
The AC leakage from any exposed metal part to earth ground and 
from all exposed metal parts to any exposed metal part having a 
return to chassis, must not exceed 0.5 mA (500 microamperes.). 
Leakage current can be measured by any one of three methods.
1.  A commercial leakage tester, such as the Simpson 229 or RCA 
WT-540A. Follow the manufacturers’ instructions to use these 
instruments.
2.  A battery-operated AC milliammeter. The Data Precision 245 
digital multimeter is suitable for this job.
3.  Measuring the voltage drop across a resistor by means of a 
VOM or battery-operated AC voltmeter. The “limit” indication 
is 0.75 V, so analog meters must have an accurate low-voltage 
scale. The Simpson 250 and Sanwa SH-63Trd are examples 
of a passive VOM that is suitable. Nearly all battery operated 
digital multimeters that have a 2 V AC range are suitable. (See 
Fig. A)
1.5 k
Ω
0.15 
μF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A.  Using an AC voltmeter to check AC leakage.
SAFETY-RELATED  COMPONENT  WARNING!
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 
 
WHOSE  PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS  
MANUAL  OR  IN  SUPPLEMENTS  PUBLISHED  BY  SONY.
ATTENTION  AU  COMPOSANT  AYANT  RAPPORT  
À  LA  SÉCURITÉ!
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  COMPOSANTS  QUE  
PAR  DES  PIÈCES  SONY  DONT  LES  NUMÉROS  SONT  DON-
NÉS  DANS  CE  MANUEL  OU  DANS  LES  SUPPLÉMENTS  
PUBLIÉS  PAR  SONY.
1. 
SERVICING  NOTES 
 .............................................  
3
2. DISASSEMBLY
2-1. Disassembly 
Flow 
...........................................................   5
2-2. Rear 
Panel 
.......................................................................   5
2-3.  FRONT LED Board, Top Panel Assy .............................   6
2-4.  Top Plate Block, Fuse (F900) .........................................   7
2-5. POWER 
Board 
................................................................   7
2-6.  Power Cord (AC1) ..........................................................   8
2-7. Sub 
AMP 
Block 
..............................................................   9
2-8.  SUB MAIN Board ..........................................................   9
2-9.  Bottom Panel Block ........................................................   10
2-10.  Loudspeaker (13 cm) (SP100) ........................................   11
3. DIAGRAMS
3-1. Block 
Diagram 
................................................................  13
3-2.  Schematic Diagram - MAIN Section - ...........................   15
3-3.  Printed Wiring Board - MAIN Section (1/2) - ................   16
3-4.  Printed Wiring Boards - MAIN Section (2/2) - ..............   17
3-5.  Printed Wiring Board - POWER Board - ........................   18
3-6.  Schematic Diagram - POWER Board - ..........................   19
4. 
EXPLODED  VIEWS
4-1. Overall 
Section 
...............................................................  24
4-2. Sub 
AMP 
Section 
............................................................  25
4-3.  Subwoofer Cabinet Section ............................................   26
5. 
ELECTRICAL  PARTS  LIST 
 ..............................   27
TABLE  OF  CONTENTS
SA-WCT260
3
SECTION  1
SERVICING  NOTES
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)
 : LEAD  FREE  MARK
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.
ADVANCE  PREPARATION  WHEN  CONFIRMING  OP-
ERATION
All of the units included in the HT-CT260/260HP (SA-WCT260/
SA-CT260/EZW-RT50) are required to confi rming operation of 
the main unit. Check in advance that you have all of the units.
NOTE  OF  REPLACING  THE  IC104  ON  THE  SUB  MAIN  
BOARD  AND  THE  COMPLETE  SUB  MAIN  BOARD
When IC104 on the SUB MAIN board and the complete SUB 
MAIN board are replaced, it is necessary to spread the compound  
between the SUB MAIN board and the heat sink.
Part No.   
Remarks
J-2501-221-A 
THERMAL COMPOUND (G747)
Spread the compound referring to the fi gure below.
– SUB MAIN Board (Component Side) –
thermal compound G747
IC104
CAPACITOR  ELECTRICAL  DISCHARGE  PROCESSING 
When checking the board, for the electric shock prevention, con-
nect the resistors to both ends of respective capacitor (C935 or 
C936) to discharge the capacitor (C935 or C936).
– POWER Board (Conductor Side) –
800 
:/2 W
C935 (US and Canadian models)
C936 (Except US and Canadian models)
Ver. 1.1
SA-WCT260
4
MODEL  IDENTIFICATION
Distinguish by model number label stuck on the rear side of a main unit.
MODEL NUMBER LABEL
US and Canadian models
AEP model
UK model
SA-WCT260 UC2
4-434-526-0s
SA-WCT260 CEL
4-434-528-0s
SA-WCT260 CEK
4-438-046-0s
Singapore model
SA-WCT260 SP1
4-438-047-0s
Russian model
SA-WCT260 RU3
4-438-049-0s
Australian model
SA-WCT260 AU1
4-447-896-0s
Brazilian model
SA-WCT260 BR1
4-447-897-0s
– Rear side view –
Ver. 1.1
Page of 32
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Here you can view online or download Sony SA-WCT260 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony SA-WCT260 Audio. Information contained in Sony SA-WCT260 service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).