Sony SA-WCT100 User manual

SERVICE MANUAL
Sony Corporation
Audio Business Group
Published by Sony Techno Create Corporation
SA-WCT100/SS-MCT100
SPECIFICATIONS
SA-WCT100
ACTIVE SUBWOOFER
SS-MCT100
SPEAKER SYSTEM
9-887-974-01
2008B05-1
© 2008.02
US Model
Canadian Model
Ver. 1.0 2008.02
• SA-WCT100 is the amplifier, HDMI and active sub-
woofer section in HT-CT100.
• SS-MCT100 is the satellite speaker in HT-CT100.
• Repair in the state of having connected with SA-
WCT100 and SS-MCT100.
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
6,487,535 & other U.S. and worldwide patents #'s: 5,451,942; 5,956,674; 5,974,380; 5,978,762; issued & pending. DTS and DTS Digital
Surround are registered trademarks and the DTS logos and Symbol are trademarks of DTS, Inc. © 1996-2007 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” is a trademark of Sony Corporation.
Photo: SA-WCT100 Photo: SS-MCT100
Formats supported by this
system
Digital input formats supported by this system
are as follows.
* Linear PCM accepts sampling frequencies of no
more than 48 kHz.
AUDIO POWER SPECIFICATIONS
(SA-WCT100)
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION (Stereo mode):
With 8 ohms loads, both channels driven, from 180 -
20,000 Hz; rated 40 Watts per channel minimum RMS
power, with no more than 1 % total harmonic distortion
from 250 milli Watts to rated output.
Amplifier section (SA-WCT100)
Reference Output Power
Surround mode Front: 50 Watts/ch
(8 ohms at 1 kHz,
THD 10 %)
Center*: 50 Watts/ch
(8 ohms at 1 kHz, THD
10 %)
Subwoofer: 100 Watts/ch
(4 ohms at 100 Hz,
THD 10 %)
* Depending on the sound field settings and the source,
there may be no sound output.
Inputs (Analog)
TV Impedance: 30 kohms
Inputs (Digital)
TV, DVD Optical
SAT Coaxial, optical
HDMI section (SA-WCT100)
Connector HDMI 19pin-standard
connector
Video inputs/outputs BD, DVD, SAT:
640 × 480p@60 Hz
720 × [email protected]/60 Hz
1440 × [email protected]/60 Hz
(pixel sent 2 times)
1280 × [email protected]/60 Hz
1920 × [email protected]/
60 Hz
1920 × [email protected]4/
60 Hz
720 × 576p@50 Hz
1440 × 576p@50 Hz
(pixel sent 2 times)
Format Supported/Not supported
Dolby Digital B
DTS B
Linear PCM (2ch)* B
Linear PCM (5.1ch,
7.1ch)* (Only on
HDMI)
B
Dolby Digital Plus ×
Dolby True HD ×
DTS-HD ×
– Continued on next page –

SA-WCT100/SS-MCT100
2
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. Acommercial 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-operatedAC 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 VAC range are suitable. (See
Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 kΩ0.15 μFAC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
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-RELATED COMPONET WARNING!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON 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 0SUR
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.
1280 × 720p@50 Hz
1920 × 1080i@50 Hz
1920 × 1080p@50 Hz
1920 × 1080p@24 Hz
Audio inputs BD, DVD, SAT: Linear
PCM 7.1ch/
Dolby Digital/DTS
Satellite
speaker (SS-MCT100)
Speaker system Bass reflex, magnetically
shielded
Speaker units 40 × 70 mm (1 5/8×27/8
inches) cone type
Dimensions (approx.) 800 × 68 × 65 mm (31 1/2×
23/4×25/8inches) (w/h/d)
Mass (approx.) 2 kg (4 lb 7 oz)
Active subwoofer (SA-WCT100)
Speaker system Bass reflex
Speaker unit 160 mm (6 1/2inches) cone
type
Dimensions (approx.) 160 × 500 × 360 mm (6 3/8
×193/4×141/4inches)
(w/h/d)
Mass (approx.) 10 kg (22 lb 1 oz)
Power requirements AC 120 V/60 Hz
Power consumption
Design and specifications are subject to change without
notice.
On:70Watts
Active Standby (Control for HDMI is on):
Signal in: 5 Watts (maximum)
No signal: 1.5 Watts (minimum)
Standby (Control for HDMI is off): 0.3 Watts

SA-WCT100/SS-MCT100
3
1. SERVICING NOTES ............................................... 4
2. GENERAL .................................................................. 6
3. DISASSEMBLY
3-1. Disassembly Flow........................................................... 7
3-2. Front Panel Assy............................................................. 8
3-3. Grille Assy ...................................................................... 9
3-4. AMP Block ..................................................................... 10
3-5. IO Board ......................................................................... 10
3-6. HDMI Board................................................................... 11
3-7. Back Panel, D.C. FAN (M3001)..................................... 11
3-8. MAIN Board................................................................... 12
3-9. POWER Board................................................................ 12
4. TEST MODE ............................................................. 13
5. DIAGRAMS
5-1. Block Diagram - MAIN Section (SA-WCT100) -.......... 14
5-2. Block Diagram - HDMI Section (SA-WCT100) -.......... 15
5-3. Block Diagram - AMP Section (SA-WCT100) -............ 16
5-4. Block Diagram - POWER SUPPLY Section -................ 17
5-5. Schematic Diagram
- MAIN Board (1/7) (SA-WCT100) -............................. 19
5-6. Schematic Diagram
- MAIN Board (2/7) (SA-WCT100) -............................. 20
5-7. Schematic Diagram
- MAIN Board (3/7) (SA-WCT100) -............................. 21
5-8. Schematic Diagram
- MAIN Board (4/7) (SA-WCT100) -............................. 22
5-9. Schematic Diagram
- MAIN Board (5/7) (SA-WCT100) -............................. 23
5-10. Schematic Diagram
- MAIN Board (6/7) (SA-WCT100) -............................. 24
5-11. Schematic Diagram
- MAIN Board (7/7) (SA-WCT100) -............................. 25
5-12. Printed Wiring Board
- MAIN Board (Component Side) (SA-WCT100) -....... 26
5-13. Printed Wiring Board
- MAIN Board (Conductor Side) (SA-WCT100) -......... 27
5-14. Printed Wiring Board - IO Board (SA-WCT100) - ........ 28
5-15. Schematic Diagram - IO Board (SA-WCT100) -........... 29
5-16. Printed Wiring Board
- HDMI Board (Side A) (SA-WCT100) -....................... 30
5-17. Printed Wiring Board
- HDMI Board (Side B) (SA-WCT100) -....................... 31
5-18. Schematic Diagram
- HDMI Board (1/2) (SA-WCT100) -............................. 32
5-19. Schematic Diagram
- HDMI Board (2/2) (SA-WCT100) -............................. 33
5-20. Printed Wiring Board
- SPOUT Board (SA-WCT100) - ................................... 34
5-21. Schematic Diagram
- SPOUT Board (SA-WCT100) - ................................... 34
5-22. Printed Wiring Board
- REMOTE Board (SS-MCT100) - ................................ 34
5-23. Schematic Diagram
- REMOTE Board (SS-MCT100) - ................................ 34
5-24. Printed Wiring Board
- DISPLAY Board (SA-WCT100) -................................ 35
5-25. Schematic Diagram
- DISPLAY Board (SA-WCT100) -................................ 36
5-26. Printed Wiring Boards
- PANEL Section (SA-WCT100) - ................................. 37
5-27. Schematic Diagram
- PANEL Section (SA-WCT100) - ................................. 37
TABLE OF CONTENTS
5-28. Printed Wiring Board
- POWER Board (SA-WCT100) -.................................. 38
5-29. Schematic Diagram
- POWER Board (SA-WCT100) -................................. 39
6. EXPLODED VIEWS
6-1. Cabinet Section (SA-WCT100)...................................... 58
6-2. Front Panel Section (SA-WCT100)................................ 59
6-3. AMP Section (SA-WCT100).......................................... 60
6-4. Main Section (SA-WCT100).......................................... 61
6-5. SS-MCT100.................................................................... 62
7. ELECTRICAL PARTS LIST .............................. 63

SA-WCT100/SS-MCT100
4
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 flow)
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 REPAIR CONFIRMING
Repair in the state of having connected with SA-WCT100 and SS-
MCT100.
NOTE THE IC3511 and IC3513 ON THE HDMI BOARD
REPLACING
When IC3511 and IC3513 cannot exchange with single. When
IC3511 and IC3513 are damaged, exchange the entire mounted
board.
• JIG
When disassembling the set, use the following jig (for speaker
removal).
Part No.: J-2501-238-A
JIG FOR SPEAKER REMOVAL

SA-WCT100/SS-MCT100
5
SERVICE POSITION
IO board
SS-MCT100
HDMI board
MAIN board
POWER board
POWER board
C903
800 Ω/2W
Note 2: In checking the board, make
a capacitor discharge of C903
for electric shock prevention.
Note 4: SA-WCT100 is connected with SS-MCT100,
and remote commander is operation.
If SS-MCT100 is not connected,
remote commander cannot be operation.
Note 3: Connect the IO board and the POWER board with the MAIN board when turning on power.
Otherwise, the IC of MAIN board is damaged, and the POWER board is protected.
Note 1: Take all board out from SA-WCT100 and connect each board.

SA-WCT100/SS-MCT100
6
SECTION 2
GENERAL Thia section is extracted from
instruction manual.
Top panel (Active subwoofer)
A?/1 (on/standby)
Press to turn the system on or off.
BINPUT SELECTOR
Press to select the input source to play back.
CVOLUME +/–
Press to adjust the volume level.
INPUT SELECTOR - VOLUME +
Front panel display (Active subwoofer)
About the indications in the front panel display
APOWER / ACTIVE STANDBY indicator
Lights as follows:
Green: The system is turned on.
Amber: Control for HDMI function is
working while the system is turned
off.
Off: The system is turned off, and the
Control for HDMI function is not
working.
BLights up according to the audio input
signals.
CSLEEP
Flashes when the sleep timer function is
active.
DHDMI
Lights up when the HDMI equipment is
being used.
ECOAX/OPT
Lights up according to the cable which you
are using.
POWER /
ACTIVE STANDBY
Remote control
Here describes the buttons for amplifier
operation only.
• Point the remote at the remote sensor on the
satellite speaker.
*The5,)and MASTER VOL + buttons have a
tactile dot. Use it as a guide during operation.
"  (on/standby)
Press to turn the system on or off.
#Input buttons
Press one of the buttons to select the
componentyouwanttouse.
The buttons are factory assigned to control
Sony components. You can change the
factory settings of the input buttons to suit
the components in your system. For details,
refer to “Changing the input button
assignments of the remote”.
$SOUND FIELD
Press to select the sound field.
%LEVEL MODE
Presstoadjust thelevelofthecenterspeaker
and the subwoofer.
&AMP MENU
Press to display the menu of the system.
'MUTING
Presstoturnoffthesound.
(MASTER VOL +/–
Press to adjust the volume.
)$,9,Y,Dor
Press $,9,Yor Dto select the settings.
Then press to enter the selection.
Note
123
46
78
0
ENTER
9
TV INPUTTHEATER TV

AV 
TV BD DVD SAT
SYSTEM STANDBY
TOP MENU MENU
BD/DVD
RETURN/EXIT
TV
REPLAY ADVANCE
MENU/HOME
F1 F2
AMP MENU
CLEAR
TOOLS/
OPTIONS
DISPLAY MUTING
TV VOL
MASTER VOL
SOUND
FIELD
LEVEL
MODE
GUIDE
FAVORITEWIDEPICTUREJUMP
DMPORT

+HCVT-HCVT
'
(H
G

).N
9Y



5

SA-WCT100/SS-MCT100
7
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW (SA-WCT100)
3-2. FRONT PANEL ASSY
(Page 8) 3-3. GRILLE ASSY (Page 9) 3-4. AMP BLOCK
(Page 10)
3-5. IO BOARD
(Page 10)
3-6. HDMI BOARD
(Page 11)
3-9. POWER BOARD
(Page 12)
3-7. BACK PANEL, D.C. FAN (M3001)
(Page 11)
3-8. MAIN BOARD
(Page 12)
SET

SA-WCT100/SS-MCT100
8
Note: Follow the disassembly procedure in the numerical order given.
3-2. FRONT PANEL ASSY
Note: Please do set by placing the grille assy side up as shown in the figure and work.
wire (flat type) (15 core)
(CN801)
sheet (wire vibration proof)

Insert the jig (J-2501-238-A) into a space
made by inserting the screwdriver,
and raise the front panel assy gradually.
Insert the jig (J-2501-238-A) into a space
made by inserting the screwdriver,
and raise the front panel assy gradually.
Raise the front panel assy a little by little
from bottom to top of the set.
eight bosses
bottom side
Insert a flat-tip screwdriver into a recess
in the bottom of the set
to raise the front panel assy a little.
two screws
(BVTP3
×8)
two screws
(BVTP3
×8)
R front panel assy
retainer board
retainer board
ferrite core

SA-WCT100/SS-MCT100
9
3-3. GRILLE ASSY
Note: Please do set by placing the grille assy side up as shown in the figure and work.
Insert the jig (J-2501-238-A) into a space
made by inserting the screwdriver,
and raise the grille assy gradually.
grille assy
Insert a flat-tip screwdriver into a recess
in the bottom of the grille assy
to raise the front panel assy a little.
grille assy
boss boss
boss
boss
bottom side

SA-WCT100/SS-MCT100
10
3-4. AMP BLOCK
five screws
(4
×20)

connector
(CN252)
AMP block
3-5. IO BOARD
twelve screws
(BVTP3
×8)
bracket (top)
screw
(BVTP3
×8)
five screws
(BVTP3
×8)
screw
(BVTT3
×6)
IO board
wire (flat type) (19 core)
(IO board: CN202/MAIN board: CN1018)