DSX-S300BTX - Sony Car Audio Service Manual (repair manual). Page 2

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

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

6

3-1. Disassembly 

Flow 

...........................................................  12

3-2.  Top Cover Block .............................................................   12
3-3. Tray 

Assy 

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

3-4.  Sub Panel Complete Assy ...............................................   13
3-5. MAIN 

Board 

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

3-6. Volume 

Knob 

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

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

5-1.  Block Diagram - AUDIO Section (1/2) - ........................   16
5-2.  Block Diagram - AUDIO Section (2/2) - ........................   17
5-3. Block 

Diagram 

 

- PANEL, POWER SUPPLY Section - ...........................   18

5-4.  Printed Wiring Board - MAIN Section (1/2) - ................   20
5-5.  Printed Wiring Boards - MAIN Section (2/2) - ..............   21
5-6.  Schematic Diagram - MAIN Section (1/6) - ...................   22
5-7.  Schematic Diagram - MAIN Section (2/6) - ...................   23
5-8.  Schematic Diagram - MAIN Section (3/6) - ...................   24
5-9.  Schematic Diagram - MAIN Section (4/6) - ...................   25
5-10.  Schematic Diagram - MAIN Section (5/6) - ...................   26
5-11.  Schematic Diagram - MAIN Section (6/6) - ...................   27
5-12.  Printed Wiring Board - SUB Board - ..............................   28
5-13.  Schematic Diagram - SUB Board - .................................   28
5-14.  Printed Wiring Board - DISPLAY Board - .....................   29
5-15.  Schematic Diagram - DISPLAY Board - ........................   30

6-1. Main 

Section 

...................................................................  42

6-2.  Front Panel Section .........................................................   43
6-3.  Sub Panel Section ...........................................................   44

  ..............................   45

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.

The “SAT Radio Ready” 
logo indicates that this 
product will control a satellite 
radio tuner module (sold 

separately). Please see your nearest authorized 
Sony dealer for details on the satellite radio 
tuner module.
“SAT Radio,” “SAT Radio Ready,” the SAT 
Radio and SAT Radio Ready logos and all 
related marks are trademarks of Sirius XM 
Radio Inc. and XM Satellite Radio Inc.

ZAPPIN and Quick-BrowZer are trademarks of 
Sony Corporation.

12 TONE ANALYSIS and its 
logo are trademarks of Sony 
Corporation.

“WALKMAN” and 
“WALKMAN” logo are 
registered trademarks of 
Sony Corporation.

SensMe and the SensMe logo are 
trademarks or registered 
trademarks of Sony Ericsson 
Mobile Communications AB.

Music recognition technology and related data are 
provided by Gracenote®. Gracenote is the industry 
standard in music recognition technology and 
related content delivery. For more information, 
please visit www.gracenote.com. 

CD and music-related data from Gracenote, Inc., 
copyright © 2000-2010 Gracenote. Gracenote 
Software, copyright © 2000-2010 Gracenote. This 
product and service may practice one or more of 
the following U.S. Patents: #5,987,525; 
#6,061,680; #6,154,773, #6,161,132, #6,230,192, 
#6,230,207, #6,240,459, #6,330,593, and other 
patents issued or pending. Some services supplied 
under license from Open Globe, Inc. for U.S. 
Patent: #6,304,523. 

Gracenote and CDDB are registered trademarks of 
Gracenote. The Gracenote logo and logotype, and 
the “Powered by Gracenote” logo are trademarks 
of Gracenote.

The Bluetooth word mark and logos are owned 
by the 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.

Microsoft, Windows, Windows 
Vista and Windows Media and 
logos are trademarks or 
registered trademarks of 
Microsoft Corporation in the 

United States and/or other countries.

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 from 
Microsoft or an authorized Microsoft subsidiary.

iPod is a trademark of Apple Inc., registered in 
the U.S. and other countries.

iPhone is a trademark of Apple Inc.

Apple, Macintosh and iTunes are trademarks of 
Apple Inc., registered in the U.S. and other 
countries.

MPEG Layer-3 audio coding technology and 
patents licensed from Fraunhofer IIS and Thomson.

HD Radio

TM

 is a proprietary trademark of 

iBiquity Digital Corp