Sony PHA-2 Service Manual ▷ View online
SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
PHA-2
SPECIFICATIONS
PORTABLE HEADPHONE AMPLIFIER
9-893-917-02
2014B33-1
©
2014.02
US Model
Canadian Model
E Model
Chinese Model
Ver. 1.1 2014.02
Frequency range
10 Hz – 100 kHz (AUDIO IN input)
Distortion 0.01% or less (1 kHz)
Distortion 0.01% or less (1 kHz)
Supported impedance
8 Ω - 600 Ω
Maximum input
1 Vrms (AUDIO IN)
Maximum output (when using
the built-in lithium-ion
rechargeable battery)
the built-in lithium-ion
rechargeable battery)
Approx. 165 mW + 165 mW
(8 Ω, 10 % distortion)
Approx. 90 mW + 90 mW
(32 Ω, 1 % distortion)
Approx. 25 mW + 25 mW
(300 Ω, 10 % distortion)
(8 Ω, 10 % distortion)
Approx. 90 mW + 90 mW
(32 Ω, 1 % distortion)
Approx. 25 mW + 25 mW
(300 Ω, 10 % distortion)
Output jack
Stereo mini jack*
1
(PHONES jack)
Stereo mini jack*
1
(Switching the input
and output of the AUDIO IN/LINE OUT
jack by the OUTPUT SELE CT switch)
jack by the OUTPUT SELE CT switch)
Input jack/port
Stereo mini jack*
1
(Switching the input
and output of the AUDIO IN/LINE OUT
jack by the OUTPUT SELE CT switch)
Micro-USB port (type B)
“WALKMAN” connecting port
iPhone/iP ad/iP od connecting port
*
jack by the OUTPUT SELE CT switch)
Micro-USB port (type B)
“WALKMAN” connecting port
iPhone/iP ad/iP od connecting port
*
1
Only a 3-pole ster eo mini plug is
supported. Other plugs, including
2-pole mini plug or 4 -pole ster eo
mini plug, are not supported.
supported. Other plugs, including
2-pole mini plug or 4 -pole ster eo
mini plug, are not supported.
Operating temperature
0 °C to 40 °C (32°F to 104°F)
Charging temperature
5 °C to 35 °C (41°F to 95°F)
Power sour ce
DC 3.7 V built-in lithium-ion
rechargeable batter y
rechargeable batter y
Battery life*
2
Analog connection: Approx. 17 hours*
2
Digital connection: Approx. 6.5
hours*
hours*
2
Charging time
When c onnected to a c omputer:
Approx. 7 hours*
Approx. 7 hours*
3
When c onnected to an AC outlet
using the recommended USB AC
adaptor (optional): Approx. 3.5
hours*
using the recommended USB AC
adaptor (optional): Approx. 3.5
hours*
3
*
2
when using the unit at 1 mW +
1 mW output (24 Ω). Time may vary,
depending on the immediate
1 mW output (24 Ω). Time may vary,
depending on the immediate
*
4
When playing back DSD on your
Mac OS, or Windows in DoP mode,
2.8 MHz is the upper limit.
Mac OS, or Windows in DoP mode,
2.8 MHz is the upper limit.
environment or c onditions of use .
*
3
Time required for empty batter y to
recharge.
recharge.
Dimensions
Approx. 68mm × 29mm × 140mm
(2
(2
3
/
4
× 1
3
/
16
× 5
5
/
8
in) (w/h/d,
projecting parts are not included)
Mas s
Approx. 270 g (9 .52 oz)
Supported sampling
frequencies/bit
frequencies/bit
PCM: Maximum 192 kHz/24 bit
DSD: 2.8 MHz, 5.6 MHz*
DSD: 2.8 MHz, 5.6 MHz*
4
Included items
Digital output USB cable for
“WALKMAN” (1)
Micro-USB c able (1)
Stereo mini cable (1)
Silicone belt (4)
Protection sheet (1)
Operating Instructions (1)
“WALKMAN” (1)
Micro-USB c able (1)
Stereo mini cable (1)
Silicone belt (4)
Protection sheet (1)
Operating Instructions (1)
Operating environment
Compliant OS:
Windows 8/Windows 8 Pro
Windows 7
Starter (SP1 or later)/Home Basic (SP1
or later)/Home Premium (SP1 or
later)/P rofessional (SP1 or later)/
Ultimate (SP1 or later)
Windows Vist a
Home Basic (SP2 or later)/Home
Premium (SP2 or later)/Business (SP2
or later)/Ultimate (SP2 or later)
Mac OS X (10.6. 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 )
Windows 8/Windows 8 Pro
Windows 7
Starter (SP1 or later)/Home Basic (SP1
or later)/Home Premium (SP1 or
later)/P rofessional (SP1 or later)/
Ultimate (SP1 or later)
Windows Vist a
Home Basic (SP2 or later)/Home
Premium (SP2 or later)/Business (SP2
or later)/Ultimate (SP2 or later)
Mac OS X (10.6. 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 computer at the
factory.
The unit is not guaranteed to
operate with all computers.
The unit is not guaranteed to
operate with home built computers,
operating systems that ar e
personally upgraded, or multiple
operating systems.
The unit is not guaranteed to
operate with functions such as
system suspend, sleep, or
hibernation, on any computer.
installed to the computer at the
factory.
The unit is not guaranteed to
operate with all computers.
The unit is not guaranteed to
operate with home built computers,
operating systems that ar e
personally upgraded, or multiple
operating systems.
The unit is not guaranteed to
operate with functions such as
system suspend, sleep, or
hibernation, on any computer.
Design and specific ations are subject
to change without notice.
to change without notice.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
PHA-2
2
Trademark Notices
“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.
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.
1.
SERVICING NOTES
.............................................
3
2. DISASSEMBLY
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
2-5. MAIN
Board
................................................................... 7
2-6. Lithium Ion Battery Pack Assy (BT1) ............................ 8
2-7. SW
2-7. SW
Board
........................................................................ 8
3. DIAGRAMS
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
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.
EXPLODED VIEWS
4-1. Case
Section
.................................................................... 19
4-2. MAIN Board Section ...................................................... 20
5. ACCESSORIES
....................................................... 21
TABLE OF CONTENTS
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 .
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)
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)
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)
PHA-2
3
SECTION 1
SERVICING NOTES
ABOUT THE BOARD REPLACING
When the board installed in this unit is defective, exchange the
mount assy.
However, some mount parts are exchangeable.
Refer to “4. EXPLODED VIEWS” (page 20) for exchangeable
parts.
When the board installed in this unit is defective, exchange the
mount assy.
However, some mount parts are exchangeable.
Refer to “4. EXPLODED VIEWS” (page 20) for exchangeable
parts.
ABOUT THE SCHEMATIC DIAGRAM AND PRINTED
WIRING BOARD (US and Canadian models only)
Printed wiring board and schematic diagram described to this ser-
vice manual is for the reference for US and Canadian models.
WIRING BOARD (US and Canadian models only)
Printed wiring board and schematic diagram described to this ser-
vice manual is for the reference for US and Canadian models.
PHA-2
4
SECTION 2
DISASSEMBLY
• This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
2-2. VOL KNOB ASSY
SET
2-3. GAIN
SW-GUIDE
(Page
5)
2-4. MAIN BOARD BLOCK
(Page
(Page
6)
2-5. MAIN
BOARD
(Page
7)
2-6. LITHIUM ION BATTERY PACK ASSY (BT1)
(Page
(Page
8)
2-7. SW
BOARD
(Page
8)
2-2. VOL
KNOB
ASSY
(Page
4)
– Bottom view –
2 front bumper
1 screw
M1.7
u 5
1 screw
M1.7
u 5
3 VOL knob assy
Note: When removing the VOL knob assy,
pull straight out without prying
up and down.