SRS-X7 - Sony Audio Service Manual (repair manual)

2014F33-1

© 

2014.06

Note:
Be sure to keep your PC used for service and 
checking of this unit always updated with the 
latest version of your anti-virus software.
In case a virus affected unit was found during 
service, contact your Service Headquarters. 

Full range speak er: Approx. 46 mm (1 7/8 inches) diameter × 2 / 
Subwoof er: Approx. 62 mm (2 3/8 inches) diameter ×  1

Using AC adaptor
Full range speak er: 8W+8W (at 1% harmonic distortion, 1 kHz, 8 Ω)
Subwoof er: 16W (at 1% harmonic distortion, 100 Hz, 4 Ω)

Using battery
Full range speak er: 3W+3W (at 1% harmonic distortion, 1 kHz, 8 Ω)
Subwoof er: 6W (at 1% harmonic distortion, 100 Hz, 4 Ω)

IEEE 802.11 b/g (WEP 64 bit, WEP 128 bit, WPA/WP A2-PSK (AES),  WPA/
WPA2-PSK (TKIP))

2.412 GHz – 2.462 GHz (2.4 GHz ISM Band,  11 Channels) / Channel 1 
– Channel 11

2.412 GHz – 2.472 GHz (2.4 GHz ISM Band, 13 Channels) / Channel 1 
– Channel 13

BLUETOOTH Specification Power Clas s 2

Line of sight App rox. 10 m*

1

2.4 GHz band (2.4 000 GHz – 2.4835 GHz)

BLUETOOTH Specification Version 3.0

A2DP (Advanced Audio Distribution Profile) / A VRCP (Audio Video 
Remote C ontrol Profile)

SBC (Subband C odec)*

4

 / AA C*

5

 / aptX

20 Hz – 20,000 Hz (with 44. 1 kHz sampling)

*

1

The actual range will vary depending on f actors such as obstacles 
between devic es, magnetic fields ar ound a micr owave oven,  static 
electricity, reception sensitivity, aerial’s perf ormanc e, operating 
system,  software application, etc.

*

2

BLUETOOTH standar d profiles indicate the purpose of BLUET OOTH 
communic ation between devic es.

*

3

Codec:  Audio signal compression and  conversion forma t

*

4

Subband Codec

*

5

Advanced Audio Coding

ANALOG Φ 3 .5 mm ster eo mini jack

10BASE-T/ 100BASE-TX (Auto Polarity)

USB jack Type A (for charging the battery of a c onnected device) (5 V, 
Max. 1.5 A: labeled on bottom of system)

DC 18V (using the supplied AC adaptor connected to AC 100V-240 V, 
50Hz/60Hz power supply) or, using built in lithium-ion battery

DC 18V (using the supplied AC adaptor connected to AC 120V-240V, 
50Hz/60Hz power supply) or, using built in lithium-ion battery

Input: AC 100 V - 240 V 60 W, 50 Hz/60 Hz
Output: DC 18 V, 2.6 A

Approx. 6 hours

Approx. 3 hours

5 °C to 35 °C (41 °F to 95 °F)

Approx. 300 mm × 132 mm × 60 mm (11 7/8 inches × 5 2/8 inches × 
2 3/8 inches)

Approx. 1.9kg (4 lb 3 oz)

AC power cord (1) / AC adaptor (AC-E1826L) (US, Canadian, AEP, UK, 
Singapore, Argentina and Thai models) (1) / AC adaptor (AC-E1826) 

(Australian, Chinese, Russian and Korean models) (1) / Start Guide 
“Enjoy Music over Your Wi-Fi Network” / Reference Guide, warranty card 
(US model) / Reference Guide (Except US model) / Warranty card 
(Except Singapore, Argentina and Thai models)

Design and specifications are subject to change without notice.

SONY, Sony Entertainment Network and the logos ar e trademarks 
of Sony Corporation.
Windows,  the Windows logo , and Windows Media ar e either 
registered trademarks or tr ademarks of Micr osoft Corporation in 
the United States and/or other c ountries.
This product is protected by certain intellectual property rights of 
Microsoft Corporation. Use or distribution of such technology 
outside of this product is prohibited without a license fr om 
Microsoft or an authoriz ed Microsoft subsidiar y.
Pandora, the Pandora logo, and the P andora trade dress are 
trademarks or r egistered trademarks of P andora Media,  Inc., used 
with permission.
Spotify and Spotify logos ar e trademarks of the Spotify Gr oup.
Apple, the Apple logo, AirPlay, iPad, iPhone, iPod, iPod nano , iPod 
touch, iTunes, Mac, and OS X ar e trademarks of Apple Inc.,  
registered in the U.S. and other countries. App Store is a ser vice 
mark of Apple Inc.  
“Made f or iPod,” “Made f or iPhone,” and “Made f or iPad” mean that 
an electronic accessory has been designed to c onnect specific ally 
to iPod, iPhone, or iPad, respectively, and has been  certified by the 
developer to meet Apple perf ormanc e standar ds. Apple is not 
responsible f or the operation of this device or its compliance with 
saf ety and regulatory standar ds. Please note that the use of this 
accessory with iPod, iPhone, or iPad may aff ect wireless 
performanc e.
Macintosh and Mac OS ar e trademarks of Apple Inc.,  registered in 
the U.S. and other countries.

“

” is a mark of the Wi-Fi Allianc e.

Wi-Fi®,  Wi-Fi  Protected Access® and Wi-Fi Allianc e® ar e registered 
marks of the Wi-Fi Allianc e.
Wi-Fi CERTIFIED™,  WPA™ , WPA2™ and Wi-Fi  Protected Setup™ ar e 
marks of the Wi-Fi Allianc e.
DLNA™,  the DLNA Logo and DLNA CERTIFIED™ ar e trademarks,  
ser vice marks,  or certification marks of the Digital Living Network 
Alliance.
© 2013 CSR plc and its group companies.  
The aptX® mark and the aptX logo ar e trade marks of CSR plc or 
one of its group companies and may be r egistered in one or mor e 
jurisdictions.
“S-Master”  is a trademark of Sony C orporation.
ClearAudio+ and 

 are trademarks of Sony 

Corporation.
“DSEE” and 

 are trademarks of Sony C orporation.

MPEG Layer-3 audio coding technology and patents lic ensed fr om 
Fraunhofer IIS and Thomson.
The BLUETOOTH® wor d mark and logos ar e owned by the 
Bluetooth SIG, Inc. and any use of such marks by Sony C orporation 
is under license . Other trademarks and tr ade names ar e those of 
their respective owners.
The N Mark is a tr ademark or r egistered trademark of NFC F orum, 
Inc. in the United States and in other c ountries.
Google Play and Andr oid are trademarks of Google Inc.
“Xperia” and “Xperia Tablet” are trademarks of Sony Mobile 
Communic ations AB.
WALKMAN® and W ALKMAN® logo ar e registered trademarks of 
Sony Corporation.
The system names and pr oduct names indic ated in this manual ar e 
generally the trademarks or r egistered trademarks of the 
manuf acturer. 
™ and ® marks ar e omitted in this manual.

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

 .............................................  

3

2-1. Disassembly 

Flow 

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

2-2.  Panel (Bottom) Block .....................................................   10
2-3.  Lithium Battery (BAT1) ..................................................   11
2-4.  Net Grill Sub Assy ..........................................................   12
2-5. Panel 

Top 

Assy 

................................................................  13

2-6. Cabinet 

(Front) 

Assy 

.......................................................  14

2-7. Clamp 

(L35) 

....................................................................  15

2-8.  Box (Lch, Rch) Block .....................................................   16
2-9.  Loudspeaker Passive (L-ch, R-ch) (SP4, SP5) ...............   16
2-10.  Loudspeaker (6.2 cm) (Subwoofer) (SP3) ......................   17
2-11.  Loudspeaker (4.6 cm) Block ...........................................   17
2-12.  Loudspeaker (4.6 cm) (Full Range Speaker) 

(L-ch, R-ch) (SP1, SP2) ..................................................   18

2-13. Antenna Assy (ANT1) ....................................................   19
2-14. TOUCH Board ................................................................   20
2-15. KEY Board ......................................................................   21
2-16.  NFC Module (RC-S801) (NFC1) ...................................   22
2-17.  Cover (Jack) Block .........................................................   23
2-18. CHARGE Board .............................................................   24
2-19. JACK Board ....................................................................   24
2-20.  MAIN Board Block ........................................................   25
2-21.  WiFi Module (WIFI1), MAIN Board .............................   25
2-22.  Bluetooth Module (BT1) ................................................   26
2-23.  How to Bend Flexible Flat Cable ...................................   26

 ............................................................   27

4-1.  Block Diagram - MAIN Section - ...................................   29
4-2. Block 

Diagram 

- PANEL, POWER SUPPLY Section - ...........................   30

4-3.  Printed Wiring Boards - MAIN Section (1/2) - ..............   32
4-4.  Printed Wiring Boards - MAIN Section (2/2) - ..............   33
4-5.  Schematic Diagram - MAIN Section (1/4) - ...................   34
4-6.  Schematic Diagram - MAIN Section (2/4) - ...................   35
4-7.  Schematic Diagram - MAIN Section (3/4) - ...................   36
4-8.  Schematic Diagram - MAIN Section (4/4) - ...................   37

5-1. Overall 

Section 

...............................................................  45

5-2.  Full Range Speaker Section ............................................   46
5-3.  Cabinet (Front) Section ...................................................   47
5-4.  TOUCH Board, JACK Board Section ............................   48
5-5.  Cabinet Rear Section ......................................................   49

 ..............................   50

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  

When c onnecting or disconnecting the AC adapto r, turn off the 
system bef orehand. Otherwise, it may cause malfunction.
Use only the supplied  AC adapto r. To avoid damaging the system,  
do not use any other  AC adapto r.

Polarity of the plug

Plug the AC adaptor into a nearby w all outlet (mains). In the case 
of a problem, unplug it from the w all outlet (mains) immediately.
Do not install the AC adaptor in a c onfined spac e, such as a 
bookcase or built-in cabinet.
To reduce the risk of fir e or electric shock,  do not expose the  AC 
adaptor to dripping or splashing,  and do not plac e objects filled 
with liquids, such as v ases,  on the AC adapto r.
The validity of the CE marking is restricted to only those c ountries 
where it is legally enforced, mainly in the countries EEA (European 
Economic Area).

0  SUR  

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.

DO  NOT  REPLACE  THE  LITHIUM  BATTERY 
(US and Canadian models only)
The LITHIUM BATTERY for US and Canadian models cannot 
be replaced. If it is necessary to replace the LITHIUM BATTERY, 
replace the entire unit with a new one.

NOTE  OF  REPAIRING  THE  BOARDS
When boards other than the MAIN board installed by this unit are 
defective, individual electrical parts that the mount is done cannot 
be replaced.
Replace the mounted board, or replace the whole parts including 
an applicable board.

NOTE  THE  CN301,  IC401  AND  IC402  ON  THE  MAIN  
BOARD  REPLACING
CN301, IC401 and IC402 on the MAIN board cannot replace 
with single. When these parts are damaged, replace the complete 
mounted board.

NOTE  OF  WiFi  MODULE  REPLACING
When the WiFi module is replaced, the MAC address and DTCP-
IP ID have been changed.
Print the page 5 and 7, and pass it to the customer with the repaired 
unit when you return the customer the repaired unit.

PROCESSING  OF  REPLACING  THE  WiFi  MODULE
When replacing the WiFi module (Ref. No. WIFI1), peel the de-
vice ID label stuck on the bottom side of the unit, and stick on the 
new device ID label enclosed with the new WiFi module (Ref. No. 
WIFI1).

1 Peel the device
 ID 

2 Stick on the new 
 

Device ID:       XXXXXXXXXXXX

MAC Address: XX-XX-XX-XX-XX-XX

 

As for US and Canadian models, device ID label may be stuck on 
the model number indication side.

CHECKING  METHOD  OF  NETWORK  CONNECTION
It is necessary to check the network connection, when replacing 
the WiFi module (Ref. No. WiFi1). Check the connection of wire-
less LAN, according to the following method.

Necessary Equipment:
• 

Access point supporting WPS

Procedure:
1.  Slide the [NETWORK OFF/ON] switch in the direction of 

“ON”.

2.  Press the [?/1] button to turn the power on. Check that the 

[LINK] LED is turns off.

3.  Touch the [NETWORK] button to select the network function.
4.  Press and hold the [WPS] button, the beep sound occurs, the 

[LINK] LED is green blinking.

5.  Press the [WPS] key on the access point.
6.  Wireless LAN connection is completed. Check that the [LINK] 

LED is green lights up.

Necessary Equipment:
• Router
• LAN 

cable

Procedure:
1.  Connect the unit to the router with the network LAN cable.
2.  Slide the [NETWORK OFF/ON] switch in the direction of 

“ON”.

3.  Press the [?/1] button to turn the power on.
4.  Touch the [NETWORK] button to select the network function.
5.  Wired LAN connection is completed. Check that the [LINK] 

LED is orange lights up.

ABOUT  THE  DELETION  METHOD  OF  USER  REGIS-
TRATION  OF  SEN  SERVICE
By checking device ID label, user registration of the internet video 
of this unit can be compulsorily reset.
(Device ID label is “the hexadecimal number of 12 fi gures”)
When this unit needs compulsive reset, please check device ID 
label and consult with a service headquarters.

Procedure:
1.  Check the device ID label stuck on the bottom side of the unit.
2.  Device ID indicated on the label is recorded on a memorandum 

etc.

 

(Device ID label is “the hexadecimal number of 12 fi gures”)

Device ID:       XXXXXXXXXXXX

MAC Address: XX-XX-XX-XX-XX-XX

Note: As for US and Canadian models, device ID label may be stuck on 

the model number indication side.