MEX-BT5700U, MEX-BT5750U - Sony Car Audio Service Manual (repair manual). Page 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.

FLEXIBLE  CIRCUIT  BOARD  REPAIRING
• 

Keep the temperature of soldering iron around 270 °C during 
repairing.

• 

Do not touch the soldering iron on the same conductor of the 
circuit board (within 3 times).

• 

Be careful not to apply force on the conductor when soldering 
or unsoldering.

• 

US and Canadian models:

 CAUTION
 

The use of optical instruments with this product will increase 
eye hazard.

• 

Except US and Canadian models:

 

This compact disc player is classifi ed as a CLASS 1 LASER 
product. The CLASS 1 LASER PRODUCT label is located on 
the exterior.

CAUTION
Use of controls or adjustments or performance of procedures 
other than those specifi ed herein may result in hazardous radia-
tion exposure.

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

  ..................................................................   7

3-1.  Disassembly  Flow ..........................................................   13
3-2. Cover 

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

3-3. Sub 

Panel 

Block 

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

3-4. CD 

Mechanism 

Block 

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

3-5. MAIN 

Board 

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

3-6. SERVO 

Board 

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

3-7. Chassis 

(T) 

Sub 

Assy 

......................................................  16

3-8.  Roller Arm Assy ..............................................................   16
3-9. Chassis 

(OP) 

Assy 

...........................................................  17

3-10.  Chucking Arm Sub Assy .................................................   17
3-11. Sled Motor Assy 

..............................................................   18

3-12.  Optical Pick-up Block .....................................................   19
3-13. Optical Pick-up ...............................................................   19

TEST  MODE 

 ............................................................   20

5-1.  Block Diagram - AUDIO Section (1/2) - ........................   21
5-2.  Block Diagram - AUDIO Section (2/2) - ........................   22
5-3. Block 

Diagram 

 

- PANEL, POWER SUPPLY Section - ...........................   23

5-4.  Schematic Diagram - MAIN Section (1/5) - ...................   25
5-5.  Schematic Diagram - MAIN Section (2/5) - ...................   26
5-6.  Schematic Diagram - MAIN Section (3/5) - ...................   27
5-7.  Schematic Diagram - MAIN Section (4/5) - ...................   28
5-8.  Schematic Diagram - MAIN Section (5/5) - ...................   29
5-9.  Printed Wiring Boards - MAIN Section (1/2) - ..............   30
5-10.  Printed Wiring Boards - MAIN Section (2/2) - ..............   31
5-11.  Printed Wiring Boards - SUB Section - ..........................   32
5-12.  Schematic Diagram - SUB Section - ..............................   33
5-13.  Printed Wiring Boards - KEY Section - ..........................   34
5-14.  Schematic Diagram - KEY Section - ..............................   35

6-1. Main 

Section 

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

6-2.  Front Panel Section .........................................................   46
6-3.  CD Mechanism Deck Section (MG-101Z-188//Q) ........   47

  ..............................   48

Accessories are given in the last of the electrical parts list.

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.

ZAPPIN is a trademark of Sony Corporation.

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

iPhone is a trademark of Apple Inc.

Windows Media, and the Windows logo are trademarks or registered 
trademarks of Microsoft Corporation in the United States and/or other 
countries.

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

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.

Content providers are using the digital rights management technology for Windows Media 
contained in this device (“WM-DRM”) to protect the integrity of their content (“Secure Content”) 
so that their intellectual property, including copyright, in such content is not misappropriated.
This device uses WM-DRM software to play Secure Content (“WM-DRM Software”). If the 
security of the WM-DRM Software in this device has been compromised, owners of Secure 
Content (“Secure Content Owners”) may request that Microsoft revoke the WM-DRM Software’s
right to acquire new licenses to copy, display and/or play Secure Content. Revocation does not 
alter the WM-DRM Software’s ability to play unprotected content. A list of revoked
WM-DRM Software is sent to your device whenever you download a license for Secure Content 
from the Internet or from a PC. Microsoft may, in conjunction with such license, also download
revocation lists onto your device on behalf of Secure Content Owners.

The “HD Radio Ready” logo indicates that this product will control a Sony HD Radio

TM

tuner (sold separately).
For HD Radio

TM

 tuner operation, please refer to the HD Radio

Instructions.

HD Radio

TM

 and the HD Radio Ready logo are proprietary trademarks of iBiquity Digital 

Corp.

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 Satellite Radio Inc. and XM Satellite Radio Inc.

TM

tuner Operating 

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 

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.