PHA-2 - Sony Audio Service Manual (repair manual). Page 2

“WALKMAN” and “WALKMAN” logo are registered trademarks of Sony 
Corporation.
iPad, iPhone, iPod, iPod clas sic, iPod nano , and iPod touch are trademarks of 
Apple Inc., registered in the U.S. and other countries.
“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 
standards. Please note that the use of this a ccessory with iPod, iPhone or 
iPad may aff ect wireless perf ormanc e.
Macintosh and Mac OS ar e trademarks of Apple Inc.,  registered in the U.S. 
and other countries.
Microsoft, Windows and Windows Vista ar e registered trademarks or 
trademarks of Micr osoft Corporation in the United States and/or other 
countries.
All other trademarks and r egistered trademarks ar e trademarks or 
registered trademarks of their r espective holders.  In this manual,  TM and ® 
marks ar e not specified.

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

3

2-1. Disassembly 

Flow 

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

2-2. VOL 

Knob 

Assy 

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

2-3. Gain 

SW-guide 

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

2-4.  MAIN Board Block ........................................................   6
2-5. MAIN 

Board 

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

2-6.  Lithium Ion Battery Pack Assy (BT1) ............................   8
2-7. SW 

Board 

........................................................................   8

3-1.  Schematic Diagram - SW Board - ..................................   10
3-2.  Printed Wiring Boards - MAIN Section - .......................   11
3-3.  Schematic Diagram - MAIN Board (1/7) - .....................   12
3-4.  Schematic Diagram - MAIN Board (2/7) - .....................   13
3-5.  Schematic Diagram - MAIN Board (3/7) - .....................   14
3-6.  Schematic Diagram - MAIN Board (4/7) - .....................   15
3-7.  Schematic Diagram - MAIN Board (5/7) - .....................   16
3-8.  Schematic Diagram - MAIN Board (6/7) - .....................   17
3-9.  Schematic Diagram - MAIN Board (7/7) - .....................   18

4-1. Case 

Section 

....................................................................  19

4-2.  MAIN Board Section ......................................................   20

 .......................................................   21

Compatible iPhone/iP ad/iP od models
You can use the unit with only the f ollowing models.  Update 
your iPhone, iPad or iPod to the latest softw are before use .

iPhone 5
iPhone 4S
iPhone 4
iPhone 3GS
iPad (4th gener ation)
iPad mini
iPad (3rd generation)
iPad 2
iPad
iPod touch (5th generation)
iPod touch (4th gener ation)

iPod touch (3rd generation)
iPod touch (2nd generation)
iPod clas sic 120GB / 160GB 
(2009)
iPod nano (7th generation)
iPod nano (6th gener ation)
iPod nano (5th gener ation)
iPod nano (4th gener ation)
iPod nano (3rd generation) 

(as of July 2013)