PHA-3, PHA-3AC - Sony Audio Service Manual (repair manual)

2014I33-1

© 

2014.09

10 Hz – 100 kHz (AUDIO IN input)
Distortion 0.01 % or less (1 kHz)

8 Ω - 600  Ω

2 Vrms (AUDIO IN)

Approx. 320 mW + 320 mW (32  Ω, 1 % distortion)

Approx. 100 mW + 100 mW (32 Ω, 1 % distortion)

3-pole mini jack  (

(headphones) BALANCED-L)

3-pole mini jack  (

(headphones) BALANCED-R)

Stereo mini jack*

1

 (

(headphones)-NORMAL)

Stereo mini jack*

1

 (Switching the input and output of the AUDIO IN/LINE OUT 

jack by the OUTPUT switch)

Computer/W ALKMAN®/Xperia c onnecting port
iPhone/iP ad/iP od connecting port
Optical input connecting port (OPT IN port)
Stereo mini jack*

1

 (Switching the input and output of the AUDIO IN/LINE OUT 

jack by the OUTPUT switch)
*

1

 Only a 3 -pole ster eo mini plug is suppor ted. Other plugs, including 2-pole 

mini plug or 4 -pole ster eo mini plug, are not supported.

0 °C to  40  °C (32°F to 104°F)

5 °C to 35 °C (41°F to 95°F)

DC 3.7 V: built-in lithium-ion  rechargeable battery
DC 5 V: when char ging via USB

Analog connection:  Approx. 28 hours*

2

Digital (balanced) connection:  Approx. 5 hours*

2

When c onnected to a c omputer:  Approx. 15 hours*

3

When c onnected to an  AC outlet using the recommended USB  AC adaptor 
(sold separ ately): Approx. 6 hours*  (US and Canadian models only)

3

*

2

 when using the unit at 1 mW + 1 mW output (24 Ω). Time may  vary, 

depending on the immediate envir onment or c onditions of use .

*

3

 Time  required for empty batter y to recharge.

Approx. 80 mm × 29 mm × 140. 5 mm   
(3 

1

/

4

 × 1 

3

/

16

 × 5 

5

/

8

 in) (w/h/d,  projecting parts are not included)

Approx. 300 g (10.58  oz) (PHA-3)

PCM:  when connecting a computer:  Maximum 384 kHz/32 bit 

when connecting iPhone/iP ad/iP od:  Maximum 48 kHz/24 bit 
when connecting optical link: Maximum 192 kHz/24 bit

DSD: 2.8 MHz,  5.6 MHz

Digital cable for WALKMAN® (1)
Digital cable for Xperia (1)
Micro-USB c able (1) (PHA-3)

Stereo mini cable (1)

Silicone belt (4)
Protection sheet (1)
Start Guide (1)
Ref erence Guide (1)

Compliant OS:   
Windows  8.1/Windows  8.1 Pro/Windows 8/Windows 8 Pro   
Windows 7 

Starter (SP1 or later)/Home Basic (SP1 or later)/Home  Premium (SP1 or later)/
Professional (SP1 or later)/Ultimate (SP1 or later) 

Windows Vista 

Home Basic (SP2 or later)/Home  Premium (SP2 or later)/Busines s (SP2 or 
later)/Ultimate (SP2 or later)

Mac OS X (v10.6. 8 or later)
CPU: Intel Core 2 Processor 1.6 GHz or better
Memor y: 1 GB or better
USB port (USB 2. 0 High Speed )

One of the above OS need to be installed to the c omputer at the f actory.
The unit is not guaranteed to oper ate with all computers.
The unit is not guaranteed to oper ate with home built computers,  operating 
systems that ar e personally upgr aded, or multiple operating systems.
The unit is not guaranteed to oper ate with functions such as standby , sleep, 
or hibernation, on any computer.

Design and specific ations are subject to change without notic e.

13.5 W

Approx. 230 g (PHA-3AC)

Micro-USB c able (2) (PHA-3AC)

USB AC adaptor (2) (PHA-3AC)

DC 5 V: when using the  AC adapto r

Photo: PHA-3

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

 

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 5s
iPhone 5c
iPhone 5
iPhone 4s
iPhone 4
iPhone 3GS
iPad Air
iPad mini with Retina display
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 2014)

Design and specific ations are subject to change without notic e.

WALKMAN® and W ALKMAN® logo ar e registered trademarks of Sony 
Corporation.
“Xperia” and “Xperia Tablet” are trademarks of Sony Mobile 
Communic ations AB.
iPad, iPhone, iPod, iPod clas sic, iPod nano , iPod touch, and Retina ar e 
trademarks of Apple Inc.,  registered in the U.S. and other countries. iPad Air, 
and iPad mini are trademarks 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 
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.

ABOUT  PARTS  REPAIR  OF  EACH  BOARDS
When each boards installed in this unit are defective, individual 
electrical parts that the mount is done cannot be replaced. When 
each boards are defective, replace the mounted board or the whole 
parts including an applicable board.
However, some mount parts such as jack, connector and switch 
are replaceable.
Refer to “3. EXPLODED VIEWS” (page 9) for replaceable parts.

DESTINATION  ABBREVIATIONS
The following abbreviations for model destinations are used in this 
service manual.

• Abbreviations
 AUS : 

Australian 

model

  CH 

: Chinese model

  CND  : Canadian model
  RU 

: Russian model

0  OR  DOTTED  LINE  

0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  

0  SUR  

• 

This set can be disassembled in the order shown below.

‡ JIG
  When disassembling the unit, use the following jig.

 Part No. 

Description

  9-913-402-33  Tool for Disassembling

Note: Follow the disassembly procedure in the numerical order given.

6

4

u 2

2

u 2

5

3

1

4

5

3

2

7 

1

A 

1: Insert a piece of paper in order to avoid 

 

 

damaging the knob VOL. (Do not use tape or 

 

 

other material which is sticky)

Note 5: When installing the VOL inner 
 

knob, check the direction and 

 install 

correctly.

6

4: Use needle-nosed pliers 

 

 

to remove the nut.

A

Note 2: Lay a soft piece of cloth under the jig 
 

to avoid damaging the unit.

1

A in order to push the knob VOL 

B.

3: Prevent a short circuit by wrapping the 

 

 

flathead screwdriver with electrical tape, 

 

 

etc. (A nonconducting screwdriver 

  

is 

recommended)

A

B