Read Sony DSX-A50BT / DSX-A50BTE Service Manual online
SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
DSX-A50BT/A50BTE
SPECIFICATIONS
9-893-450-03
2012F33-1
©
2012.06
AEP Model
UK Model
E Model
DSX-A50BT
Russian Model
DSX-A50BTE
Ver. 1.2 2012.06
AEP, Russian, UK models
FM/MW/LW DIGITAL MEDIA PLAYER
Saudi Arabia model
FM/MW/SW DIGITAL MEDIA PLAYER
E, Mexican, Argentina, Indian models
FM/AM DIGITAL MEDIA PLAYER
• This model is not equipped with a mechanism deck.
Tuner section
FM
(AEP, Russian and UK models)
(E, Mexican and Indian models)
Tuning range: 87.5 – 108.0 MHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 25 kHz
Usable sensitivity: 8 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 80 dB (stereo)
Separation: 50 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
Usable sensitivity: 8 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 80 dB (stereo)
Separation: 50 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
MW/LW
Tuning range:
Tuning range:
MW: 531 – 1,602 kHz
LW: 153 – 279 kHz
LW: 153 – 279 kHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency:
9,124.5 kHz or 9,115.5 kHz/4.5 kHz
Sensitivity: MW: 26 μV, LW: 45 μV
USB Player section
Interface: USB (Full-speed)
Maximum current: 500 mA
Maximum current: 500 mA
Wireless Communication
Communication System:
Bluetooth Standard version 2.1 + EDR
Output:
Bluetooth Standard Power Class 2 (Max. +4
dBm)
dBm)
Maximum communication range:
Line of sight approx. 10 m (33 ft)*
1
Frequency band:
2.4 GHz band (2.4000 – 2.4835 GHz)
Modulation method: FHSS
Compatible Bluetooth Profiles*
Compatible Bluetooth Profiles*
2
:
A2DP (Advanced Audio Distribution Profile)
1.2
AVRCP (Audio Video Remote Control Profile)
1.3
HFP (Handsfree Profile) 1.5
PBAP (Phone Book Access Profile)
1.2
AVRCP (Audio Video Remote Control Profile)
1.3
HFP (Handsfree Profile) 1.5
PBAP (Phone Book Access Profile)
*1 The actual range will vary depending on
factors such as obstacles between devices,
magnetic fields around a microwave oven,
static electricity, reception sensitivity, antenna
(aerial)’s performance, operating system,
software application, etc.
magnetic fields around a microwave oven,
static electricity, reception sensitivity, antenna
(aerial)’s performance, operating system,
software application, etc.
*2 Bluetooth standard profiles indicate the
purpose of Bluetooth communication
between devices.
between devices.
Power amplifier section
Output: Speaker outputs
Speaker impedance: 4 – 8 ohms
Maximum power output: 50 W u 4 (at 4 ohms)
Speaker impedance: 4 – 8 ohms
Maximum power output: 50 W u 4 (at 4 ohms)
General
Outputs:
Audio outputs terminal (front/rear)
Power antenna (aerial) relay control terminal
AEP, Russian and UK models:
E, Saudi Arabia, Mexican, Argentina and Indian models:
Power amplifier control terminal
Inputs:
Remote controller input terminal
Antenna (aerial) input terminal
AUX input jack (stereo mini jack)
USB signal input connector
Antenna (aerial) input terminal
AUX input jack (stereo mini jack)
USB signal input connector
Power requirements: 12 V DC car battery
(negative ground (earth))
Dimensions: Approx. 178 u 50 u 120 mm
(7
1
/
8
u 2 u 4
7
/
8
in) (w/h/d)
Mounting dimensions: Approx. 182 u 53 u 103 mm
(7
1
/
4
u 2
1
/
8
u 4
1
/
8
in) (w/h/d)
Mass: Approx. 0.7 kg (1 lb 9 oz)
Supplied accessories:
Supplied accessories:
Remote commander: RM-X231
Parts for installation and connections (1 set)
Parts for installation and connections (1 set)
Your dealer may not handle some of the above
listed accessories. Please ask the dealer for
detailed information.
listed accessories. Please ask the dealer for
detailed information.
Design and specifications are subject to change
without notice.
without notice.
Tuner section
FM
Tuning range:
Tuning range:
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 108.0 MHz (at 100 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
87.5 – 108.0 MHz (at 100 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
FM tuning step:
50 kHz/100 kHz/200 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 25 kHz
Usable sensitivity: 8 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 80 dB (stereo)
Separation: 50 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
Usable sensitivity: 8 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 80 dB (stereo)
Separation: 50 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
AM
Tuning range:
Tuning range:
531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)
530 – 1,710 kHz (at 10 kHz step)
AM tuning step:
9 kHz/10 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency:
9,124.5 kHz or 9,115.5 kHz/4.5 kHz
(at 9 kHz step)
9,115 kHz or 9,125 kHz/5 kHz (at 10 kHz step)
(at 9 kHz step)
9,115 kHz or 9,125 kHz/5 kHz (at 10 kHz step)
Sensitivity: 26 μV
Power antenna (aerial)/Power amplifier control
terminal (REM OUT)
terminal (REM OUT)
Russian model
FM1/FM2: 87.5 – 108.0 MHz (50 kHz step)
FM3: 65 – 74 MHz (30 kHz step)
FM1/FM2: 87.5 – 108.0 MHz (50 kHz step)
FM3: 65 – 74 MHz (30 kHz step)
AEP and UK models
Tuner section
(Argentina model)
FM
Tuning range: 87.5 – 107.9 MHz
Antenna (aerial) terminal:
FM
Tuning range: 87.5 – 107.9 MHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 25 kHz
Usable sensitivity: 8 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 80 dB (stereo)
Separation: 50 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
Usable sensitivity: 8 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 80 dB (stereo)
Separation: 50 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
AM
Tuning range: 530 – 1,710 kHz
Antenna (aerial) terminal:
Tuning range: 530 – 1,710 kHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency:
9,115 kHz or 9,125 kHz/5 kHz
Sensitivity: 26 μV
Tuner section
(Saudi Arabia model)
FM
Tuning range: 87.5 – 108.0 MHz
Antenna (aerial) terminal:
FM
Tuning range: 87.5 – 108.0 MHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 25 kHz
Usable sensitivity: 8 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 80 dB (stereo)
Separation: 50 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
Usable sensitivity: 8 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 80 dB (stereo)
Separation: 50 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
MW
Tuning range: 531 – 1,602 kHz
Antenna (aerial) terminal:
Tuning range: 531 – 1,602 kHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency:
9,124.5 kHz or 9,115.5 kHz/4.5 kHz
Sensitivity: 26 μV
SW
Tuning range:
Tuning range:
SW1: 2,940 – 7,735 kHz
SW2: 9,500 – 18,135 kHz
(except for 10,140 – 11,575 kHz)
SW2: 9,500 – 18,135 kHz
(except for 10,140 – 11,575 kHz)
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency:
9,124.5 kHz or 9,115.5 kHz/4.5 kHz
Sensitivity: 26 μV
Photo: DSX-A50BT
DSX-A50BT/A50BTE
2
1.
SERVICING NOTES
............................................. 3
2. GENERAL
..................................................................
6
3. DISASSEMBLY
3-1. Disassembly
Flow
........................................................... 12
3-2. Fuse (Blade Type) (Auto Fuse) (10A/32V) (FU101),
Cover ............................................................................... 12
3-3. Sub Panel Block .............................................................. 13
3-4. MAIN Board (with BT Board) ....................................... 14
3-5. ANTENNA
3-4. MAIN Board (with BT Board) ....................................... 14
3-5. ANTENNA
Board
........................................................... 14
4.
TEST MODE
............................................................ 15
5. DIAGRAMS
5-1. Block Diagram - MAIN Section - ................................... 16
5-2. Block
5-2. Block
Diagram
- DISPLAY/POWER SUPPLY Section - ........................ 17
5-3. Schematic Diagram - MAIN Section (1/3) - ................... 19
5-4. Schematic Diagram - MAIN Section (2/3) - ................... 20
5-5. Schematic Diagram - MAIN Section (3/3) - ................... 21
5-6. Printed Wiring Board - MAIN Section (1/2)
5-4. Schematic Diagram - MAIN Section (2/3) - ................... 20
5-5. Schematic Diagram - MAIN Section (3/3) - ................... 21
5-6. Printed Wiring Board - MAIN Section (1/2)
(AEP, Russian, UK and Saudi Arabia models) - ............. 22
5-7. Printed Wiring Boards - MAIN Section (2/2)
(AEP, Russian, UK and Saudi Arabia models) - ............. 23
5-8. Printed Wiring Board - MAIN Section (1/2)
(E, Mexican, Argentina and Indian models) - ................. 24
5-9. Printed Wiring Boards - MAIN Section (2/2)
(E, Mexican, Argentina and Indian models) - ................. 25
5-10. Printed Wiring Board - KEY Board -.............................. 26
5-11. Schematic Diagram - KEY Board - ................................ 27
5-11. Schematic Diagram - KEY Board - ................................ 27
6.
EXPLODED VIEWS
6-1. Main
Section
................................................................... 33
6-2. Front Panel Section ......................................................... 34
7.
ELECTRICAL PARTS LIST
.............................. 35
Accessories are given in the last of the electrical parts list.
TABLE OF CONTENTS
NOTES ON CHIP COMPONENT REPLACEMENT
•
•
Never reuse a disconnected chip component.
•
Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
aged by heat.
The
Bluetooth word mark and logos are
owned by the Bluetooth SIG, Inc. and any
use of such marks by Sony Corporation is
under license. Other trademarks and trade
names are those of their respective owners.
use of such marks by Sony Corporation is
under license. Other trademarks and trade
names are those of their respective owners.
Windows Media is either a registered
trademark or trademark of Microsoft
Corporation in the United States and/or
other countries.
trademark or trademark of Microsoft
Corporation in the United States and/or
other countries.
This product contains technology subject
to certain intellectual property rights of
Microsoft. Use or distribution of this
technology outside of this product is
prohibited without the appropriate
license(s) from Microsoft.
to certain intellectual property rights of
Microsoft. Use or distribution of this
technology outside of this product is
prohibited without the appropriate
license(s) from Microsoft.
MPEG Layer-3 audio coding technology
and patents licensed from Fraunhofer IIS
and Thomson.
and patents licensed from Fraunhofer IIS
and Thomson.
Ver. 1.1
DSX-A50BT/A50BTE
3
SECTION 1
SERVICING NOTES
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong
viscosity
Unleaded solder is more viscous (sticky, less prone to fl ow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
also be added to ordinary solder.
NOTE FOR REPLACEMENT OF THE BT BOARD
When repairing, the complete BT board should be replaced since
any parts in the BT board cannot be repaired.
When repairing, the complete BT board should be replaced since
any parts in the BT board cannot be repaired.
ABOUT CHECKING THE OPERATION
When checking the operation of this unit, connect a USB device
to this unit.
Refer to the support site written in the operating instruction for the
details about the compatibility of a USB device.
When checking the operation of this unit, connect a USB device
to this unit.
Refer to the support site written in the operating instruction for the
details about the compatibility of a USB device.
IMPORTANT NOTE OF “INITIALIZING”
The purpose of “Bluetooth Initialize” is to initialize the Bluetooth
connection history (HF/Audio Streaming). (To delete the device
information for the devices that you connected to when searching,
etc.)
When the BT board or MAIN board (including BT board) are re-
placed, it is necessary to initialize this unit.
Refer to the following, initialize this unit.
The purpose of “Bluetooth Initialize” is to initialize the Bluetooth
connection history (HF/Audio Streaming). (To delete the device
information for the devices that you connected to when searching,
etc.)
When the BT board or MAIN board (including BT board) are re-
placed, it is necessary to initialize this unit.
Refer to the following, initialize this unit.
Note: Phonebook data and dialed/received call history can be deleted by
executing “Reset.”
Initializing Bluetooth Settings
Canceling the DEMO mode
You can initialize all the Bluetooth related
settings (pairing information, phonebook,
call history, preset number, device
information, etc.) from this unit.
settings (pairing information, phonebook,
call history, preset number, device
information, etc.) from this unit.
1
Press and hold
for 1
second to turn off the power.
2
Press and hold the select button.
The menu list appears.
The menu list appears.
3
Rotate the control dial to select “BT
INIT,” then press it.
The confirmation appears.
INIT,” then press it.
The confirmation appears.
4
Rotate the control dial to select “INIT-
YES,” then press it.
“INITIAL” flashes while initializing the
Bluetooth settings; “COMPLETE”
appears when initializing has finished.
YES,” then press it.
“INITIAL” flashes while initializing the
Bluetooth settings; “COMPLETE”
appears when initializing has finished.
Note
When disposing of this unit, preset numbers
should be deleted with “BT INIT.”
should be deleted with “BT INIT.”
You can cancel the demonstration display
which appears during turning off.
which appears during turning off.
1
Press and hold the select button.
The setup display appears.
The setup display appears.
2
Rotate the control dial until “DEMO”
appears, then press it.
appears, then press it.
3
Rotate the control dial to select
“DEMO-OFF,” then press it.
The setting is complete.
“DEMO-OFF,” then press it.
The setting is complete.
4
Press
(BACK).
The display returns to normal reception/
play mode.
play mode.
Replacing the lithium battery of the
remote commander
When the battery becomes weak, the range
of the remote commander becomes shorter.
Replace the battery with a new CR2025
lithium battery. Use of any other battery
may present a risk of fire or explosion.
remote commander
When the battery becomes weak, the range
of the remote commander becomes shorter.
Replace the battery with a new CR2025
lithium battery. Use of any other battery
may present a risk of fire or explosion.
+ side up
Notes on the lithium battery
t Keep the lithium battery out of the reach of
t Keep the lithium battery out of the reach of
children. Should the battery be swallowed,
immediately consult a doctor.
immediately consult a doctor.
t Wipe the battery with a dry cloth to assure a
good contact.
t Be sure to observe the correct polarity when
installing the battery.
t Do not hold the battery with metallic tweezers,
otherwise a short-circuit may occur.
t Do not expose the battery to excessive heat such
as direct sunlight, fire or the like.
WARNING
Battery may explode if mistreated.
Do not recharge, disassemble, or dispose
of in fire.
Battery may explode if mistreated.
Do not recharge, disassemble, or dispose
of in fire.
Cleaning the connectors
e unit may not function properly if the
connectors between the unit and the front
panel are not clean. In order to prevent this,
detach the front panel and clean the
connectors with a cotton swab. Do not apply
too much force. Otherwise, the connectors
may be damaged.
panel are not clean. In order to prevent this,
detach the front panel and clean the
connectors with a cotton swab. Do not apply
too much force. Otherwise, the connectors
may be damaged.
Notes
t For safety, turn o the ignition before cleaning
the connectors, and remove the key from the
ignition switch.
ignition switch.
t Never touch the connectors directly with your
ngers or with any metal device.
DSX-A50BT/A50BTE
4
NOTE THE MAIN BOARD OR SYSTEM CONTROLLER
(IC101) REPLACING
When the MAIN board or system controller (IC101) is replaced,
the destination setting is necessary.
(IC101) REPLACING
When the MAIN board or system controller (IC101) is replaced,
the destination setting is necessary.
1. Destination Setting
Set destination according to the procedure below.
Set destination according to the procedure below.
1-1. Setting the Destination Code
1. In the state of source off (the clock is displayed), enter the
1. In the state of source off (the clock is displayed), enter the
test mode by pressing the buttons on the remote commander in
order of the [4] t [5] t [6] (press only the [6] button for two
order of the [4] t [5] t [6] (press only the [6] button for two
seconds).
2. In the state in which the system controller version is displayed
on the liquid crystal display, enter the destination setting
mode by pressing the buttons on the main unit in order of the
[SEEK+] t [SEEK–] t [PUSH ENTER/SELECT].
mode by pressing the buttons on the main unit in order of the
[SEEK+] t [SEEK–] t [PUSH ENTER/SELECT].
3. Input the alphanumeric character of 6 digits of “F XXXXXX”
displayed on the liquid crystal display, and execute the destina-
tion setting.
tion setting.
Note: Refer to following “1-3. Entering the Destination Code” for opera-
tion method.
4. The resetting operation is executed by pressing the [SOURCE/
OFF] button for 1 second after the setting ends, and the unit
returns to the normal condition.
returns to the normal condition.
1-2. Display in Destination Setting Mode
8 digits
OP0
OP2 OP1
OP3
OP4
OP5
X
X
X
X
X
X
F
1-3. Entering the Destination Code
• Method of operation by main unit
• Method of operation by main unit
1. Rotate the control dial, and select the alphanumeric character
of “0 to F”.
2. The digit advances by pressing the [PUSH ENTER/SELECT]
or [SEEK+] button.
The digit returns by pressing the [ /MODE] or [SEEK–] but-
ton.
ton.
3. The setting is completed by pressing the [PUSH ENTER/
SELECT] button, and the initialization operation is done.
• Method of operation by remote commander
1. Press the [ ] or [ ] button, and select the alphanumeric char-
acter of “0 to F”.
2. The digit advances by pressing the [
] button.
The digit returns by pressing the [
] button.
3. The setting is completed by pressing the [ENTER] button, and
the initialization operation is done.
1-4. Destination Code
Destination
OP5 OP4 OP3 OP2 OP1 OP0
AEP, UK
0
0
4
2
0
1
Russian
0
0
6
2
0
7
E, Mexican, Indian
0
0
4
A
0
0
Saudi Arabia
0
0
4
A
0
4
Argentina
0
0
4
A
0
3
2. Confi rmation After Destination Setting
Execute the following operation after completing the destination
setting, and confi rm a correct destination was set.
Execute the following operation after completing the destination
setting, and confi rm a correct destination was set.
Destination setting checking method:
1. In the state of source off (the clock is displayed on the liquid
1. In the state of source off (the clock is displayed on the liquid
crystal display), enter the test mode by pressing the buttons on
the remote commander in order of the [4] t [5] t [6] (press
the remote commander in order of the [4] t [5] t [6] (press
only the [6] button for two seconds).
2. In the state in which the system controller version is displayed
on the liquid crystal display, enter the destination setting value
display mode by pressing the [DSPL] button on the main unit.
display mode by pressing the [DSPL] button on the main unit.
3. Confi rm the alphanumeric character of 6 digits of “F
XXXXXX” displayed in liquid crystal display is an value cor-
rectly input.
rectly input.
4. The resetting operation is executed by pressing the [SOURCE/
OFF] button on the main unit for 1 second after the confi rming
ends, and the unit returns to the normal condition.
ends, and the unit returns to the normal condition.
Ver. 1.1