Sony PHA-1 Service Manual ▷ View online
SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
PHA-1
SPECIFICATIONS
PORTABLE HEADPHONE AMPLIFIER
9-893-671-03
2014G33-1
©
2014.07
US Model
Canadian Model
E Model
Chinese Model
Ver. 1.2 2014.07
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. 175 mW + 175 mW
(8 Ω, 10 % distortion)
Approx. 26 mW + 26 mW
(300 Ω, 10 % distortion)
(8 Ω, 10 % distortion)
Approx. 26 mW + 26 mW
(300 Ω, 10 % distortion)
Audio output
Stereo mini jack
(Only a 3-pole stereo mini plug is
supported. Other plugs, including 2-pole
mini plug or 4-pole stereo mini plug, are
not supported.)
(Only a 3-pole stereo mini plug is
supported. Other plugs, including 2-pole
mini plug or 4-pole stereo mini plug, are
not supported.)
Audio input
Stereo mini jack
Micro-USB (type B)
Dedicated connector for iPod/iPhone/iPad
Micro-USB (type B)
Dedicated connector for iPod/iPhone/iPad
Operating temperature
0 °C to 40 °C
Charging temperature
5 °C to 35 °C
Power source
DC 3.7 V built-in lithium-ion rechargeable
battery
battery
Battery life*
1
AUDIO IN: Approx. 10 hours*
1
iPod/iPhone/iPad: Approx. 5 hours*
1
Charging time
Approx. 4.5 hours*
2
*
1
when using the unit at 1 mW + 1 mW
output (24 Ω). Time may vary,
depending on the immediate
environment or conditions of use.
depending on the immediate
environment or conditions of use.
*
2
Time required for empty battery to
recharge.
Dimensions
Approx. 67 mm × 26 mm × 130 mm
(w/h/d, projecting parts are not included)
(w/h/d, projecting parts are not included)
Mass
Approx. 220 g
Supported sampling
frequencies/bit
frequencies/bit
USB input: Maximum 96 kHz/24 bit
Included items
30pin-USB cable (1)
Audio cable for
Audio cable for
“WALKMAN” (1)
Micro-USB cable (1)
Stereo mini cable (1)
Silicone belt (4)
Protection sheet (1)
Operating Instructions (1)
Stereo mini cable (1)
Silicone belt (4)
Protection sheet (1)
Operating Instructions (1)
Operating environment
Compliant OS:
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)/Business (SP2 or later)/
Ultimate (SP2 or later)
Windows XP
Home Edition (SP3 or later)/ Professional
(SP3 or later)/Media Center Edition 2004
(SP3 or later)/ Media Center Edition 2005
(SP3 or later)
Mac OS X (10.5.8 or later)
CPU: Pentium II 266 MHz or better
USB port (USB 2.0 Full Speed).
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)/Business (SP2 or later)/
Ultimate (SP2 or later)
Windows XP
Home Edition (SP3 or later)/ Professional
(SP3 or later)/Media Center Edition 2004
(SP3 or later)/ Media Center Edition 2005
(SP3 or later)
Mac OS X (10.5.8 or later)
CPU: Pentium II 266 MHz or better
USB port (USB 2.0 Full Speed).
The unit is not guaranteed to operate
with all computers.
The unit is not guaranteed to operate
with home built computers, operating
systems that are personally upgraded,
or multiple operating systems.
systems that are 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.
sleep, or hibernation, on any computer.
Design and specifications are subject to
change without notice.
change without notice.
Trademark Notices
“WALKMAN” and “WALKMAN” logo are registered trademarks of Sony Corporation.
iPad, iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks of Apple
Inc., registered in the U.S. and other countries.
“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.
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.
specified.
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-1
2
SECTION 1
SERVICING NOTES
ABOUT THE BOARD REPLACING
When the board installed in this unit is defective, replace the
mount assy.
However, some mount parts are replaceable.
Refer to “4. EXPLODED VIEWS” (page 16) for replaceable parts.
When the board installed in this unit is defective, replace the
mount assy.
However, some mount parts are replaceable.
Refer to “4. EXPLODED VIEWS” (page 16) for replaceable parts.
ABOUT THE SCHEMATIC DIAGRAM AND PRINTED
WIRING BOARD (US and Canadian models only)
Printed wiring board and schematic diagram that have been de-
scribed on this service manual are for reference for US and Cana-
dian models.
WIRING BOARD (US and Canadian models only)
Printed wiring board and schematic diagram that have been de-
scribed on this service manual are for reference for US and Cana-
dian models.
Ver. 1.1
PHA-1
3
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
2-2. VOL
KNOB
ASSY
(Page
3)
2-3. GAIN
SW-GUIDE
(Page
4)
2-4. MAIN BOARD BLOCK
(Page
(Page
4)
SET
2-5. LITHIUM ION BATTERY PACK (SP73)
(Page
(Page
5)
2-6. MAIN
BOARD
(Page
5)
–
Bottom side view
–
2 bumper (front)
1 screw
M1.4 - 3.5
1 screw
M1.4 - 3.5
3 VOL knob assy
Note: When removing the VOL knob assy,
Note: When removing the VOL knob assy,
pull straight out without prying
up and down.
PHA-1
4
2-3. GAIN SW-GUIDE
2-4. MAIN BOARD BLOCK
2 rear bumper
5 gain SW-guide
2 rear bumper
3 rear panel
– Rear bottom view –
1 screw
M1.4 - 3.5
1 screw
M1.4 - 3.5
4 screw
TP1.4 - 3.5
1 screw
M1.4 - 3.5
1 screw
M1.4 - 3.5
hole
Insert a long and slender screw driver
into the hole, and remove the screw.
into the hole, and remove the screw.
Bottom side
– Rear side view –
Top side
4 Remove the MAIN board block
in the direction of an arrow.
– Rear bottom view –
2 screw
M1.7 - 2.5
3 screw
M1.7 - 3.5
3 screw
M1.7 - 3.5
5 MAIN board block
1 model number label
Note: The model number label cannot be re-used.
Note: The model number label cannot be re-used.
Be sure to exchange it for new parts.
