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

pha-2 service manual
Model
PHA-2
Pages
22
Size
1.89 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
pha-2.pdf
Date

Read Sony PHA-2 Service Manual 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)
Supported impedance
8 Ω - 600  Ω
Maximum input
1 Vrms (AUDIO IN)
Maximum output (when using 
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)
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)
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
*
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.
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
Battery life*
2
Analog connection:  Approx. 17 hours*
2
Digital connection:  Approx. 6.5 
hours*
2
Charging time
When c onnected to a c omputer:  
Approx. 7 hours*
3
When c onnected to an  AC outlet 
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  
*
4
When playing back DSD on your
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.
Dimensions
Approx. 68mm × 29mm × 140mm
(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
PCM: Maximum 192 kHz/24 bit
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)
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 )
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.
Design and specific ations are subject 
to change without notice.
CAUTION
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.
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 
Board 
...................................................................   7
2-6.  Lithium Ion Battery Pack Assy (BT1) ............................   8
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
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 .
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)
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.
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.
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 
6)
2-5. MAIN 
BOARD
 (Page 
7)
2-6.  LITHIUM ION BATTERY PACK ASSY (BT1)
 (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.
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Download Sony PHA-2 Service Manual (Repair Manual)

Here you can read online and download Sony PHA-2 Service Manual in PDF. PHA-2 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony PHA-2 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.