PHA-1A, PHA-1AEU - Sony Audio Service Manual (repair manual). Page 2

You can use the unit with only the following models. Update 
your iPhone, iPad or iPod to the latest software before use.

iPhone 6 Plus
iPhone 6
iPhone 5s
iPhone 5c
iPhone 5
iPhone 4s
iPhone 4
iPhone 3GS
iPhone 3G
iPhone

iP

ad Air 2

iP

ad mini 3

iP

ad Air

iP

ad mini 2

iP

ad mini

iP

ad (4th generation)

iP

ad (3rd generation)

iP

ad 2

iP

ad

iP

od touch (1st through 5th 

generation)

iP

od classic 120GB/160GB  

(2009)

iP

od nano (2nd through 7th 

generation)

(As of December 2014)

This unit is compatible only with the audio playback functions 
iPhones/iPads/iPods.
Depending on the Apple product, there may be significant 
electric power required when starting the communication 
connected with the unit. The battery power of the unit may be 
drained and the unit may turn off if you connect the Apple 
product to the unit when the battery power is low. In this case, 
charge the unit or use the USB AC adaptor to connect with the 
Apple product.

WALKMAN® and WALKMAN® logo are registered trademarks of Sony 
Corporation.
“Xperia” and “Xperia Tablet” are trademarks of Sony Mobile 
Communications AB.
iPad, iPhone, iPod, iPod classic, iPod nano, iPod touch, and Retina are 
trademarks of Apple Inc., registered in the U.S. and other countries. iPad Air, 
and iPad mini are trademarks of Apple Inc.
“Made for iPod,” “Made for iPhone,” and “Made for iPad” mean that an 
electronic  accessory has been designed to connect specifically to iPod, 
iPhone or iPad, respectively, and has been certified by the developer to 
meet Apple performance standards. Apple is not responsible for the 
operation of this device or its compliance with safety and regulatory 
standards. Please note that the use of this accessory with iPod, iPhone, or 
iPad may affect wireless performance.
Macintosh and Mac OS are trademarks of Apple Inc., registered in the U.S. 
and other countries.
Microsoft, Windows and Windows Vista are registered trademarks or 
trademarks of Microsoft Corporation in the United States and/or other 
countries.
All other trademarks and registered trademarks are trademarks or 
registered trademarks of their respective holders. In this manual, TM and ® 
marks are not specified.

0  OR  DOTTED  LINE  

0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  

0  SUR  

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

3

2-1. Disassembly 

Flow 

...........................................................   4

2-2. Bottom 

Panel 

...................................................................   4

2-3.  Case Block, MAIN Board Block ....................................   5
2-4. Battery 

Assy 

(BAT1) 

.......................................................   5

2-5. MAIN 

Board 

...................................................................   6

2-6. Plate 

Middle 

Assy 

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

2-7.  HP JACK Board ..............................................................   7

3-1. Block 

Diagram 

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

3-2.  Printed Wiring Boards (PHA-1A) ...................................   11
3-3. Schematic 

Diagram 

- MAIN Section (1/4) (PHA-1A) - .................................   12

3-4. Schematic 

Diagram 

- MAIN Section (2/4) (PHA-1A) - .................................   13

3-5. Schematic 

Diagram 

- MAIN Section (3/4) (PHA-1A) - .................................   14

3-6. Schematic 

Diagram 

- MAIN Section (4/4) (PHA-1A) - .................................   15

4-1.  MAIN Board Section ......................................................   23
4-2. Battery 

Section 

................................................................  24

 ..............................   25

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

Note: Refer to service manual supplement-1 for printed wiring board, 

schematic diagram and electrical parts list of PHA-1AEU.