Sony MEX-BT2500 Service Manual ▷ View online
SERVICE MANUAL
BLUETOOTH AUDIO SYSTEM
SPECIFICATIONS
MEX
-
BT2500
US and foreign patents licensed from Dolby
Laboratories.
Laboratories.
Model Name Using Similar Mechanism
CDX-GT315C
CD Mechanism Type
MG-101TA-188//Q
Optical Pick-up Name
DAX-25A
– Continued on next page –
9-887-553-01
2007B05-1
© 2007.02
© 2007.02
Sony Corporation
eVehicle Division
Published by Sony Techno Create Corporation
Published by Sony Techno Create Corporation
US Model
Canadian Model
AEP Model
UK Model
E Model
Ver. 1.0 2007.02
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.
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.
Microsoft, Windows Media,
and the Windows logo are
trademarks or registered
trademarks of Microsoft
and the Windows logo are
trademarks or registered
trademarks of Microsoft
Corporation in the United States and/or other
countries.
countries.
CD Player section
Signal-to-noise ratio: 95 dB
Frequency response: 10 – 20,000 Hz
Wow and flutter: Below measurable limit
Frequency response: 10 – 20,000 Hz
Wow and flutter: Below measurable limit
Tuner section
US and Canadian models:
AEP and UK models:
E model:
FM
Tuning range: 87.5 – 107.9 MHz
Antenna (aerial) terminal:
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
Usable sensitivity: 9 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz: 0.5 % (stereo),
Usable sensitivity: 9 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz: 0.5 % (stereo),
0.3 % (mono)
Separation: 35 dB at 1 kHz
Frequency response: 30 – 15,000 Hz
Frequency response: 30 – 15,000 Hz
AM
Tuning range: 530 – 1,710 kHz
Antenna (aerial) terminal:
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
Sensitivity: 30
Sensitivity: 30
µV
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
(US model only)
DISTORTION
23 watts per channel minimum continuous
average power into 4 ohms, 4 channels driven
from 20 Hz to 20 kHz with no more than 5% total
harmonic distortion.
23 watts per channel minimum continuous
average power into 4 ohms, 4 channels driven
from 20 Hz to 20 kHz with no more than 5% total
harmonic distortion.
CEA2006 Standard
Power Output: 17 Watts RMS
Power Output: 17 Watts RMS
× 4 at
4 Ohms < 1% THD+N
SN Ratio: 82 dBA
(reference: 1 Watt into 4 Ohms)
SN Ratio: 82 dBA
(reference: 1 Watt into 4 Ohms)
FM
Tuning range: 87.5 – 108.0 MHz
Antenna (aerial) terminal:
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
Usable sensitivity: 9 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 67 dB (stereo), 69 dB (mono)
Usable sensitivity: 9 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz: 0.5 % (stereo),
0.3 % (mono)
Separation: 35 dB at 1 kHz
Frequency response: 30 – 15,000 Hz
Frequency response: 30 – 15,000 Hz
MW/LW
Tuning range:
MW: 531 – 1,602 kHz
LW: 153 – 279 kHz
LW: 153 – 279 kHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
Sensitivity: MW: 30
Sensitivity: MW: 30
µV, LW: 40 µV
FM
Tuning range:
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
FM tuning interval: 50 kHz/200 kHz switchable
Antenna (aerial) terminal:
Antenna (aerial) terminal:
External antenna (aerial) connector
2
MEX-BT2500
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
other than those specified herein may result in hazardous radiation
exposure.
This label is located on the bottom of the
• AEP, UK and E models:
chassis.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED LINE
WITH MARK
0
ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
0
SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
Wireless Communication
Communication System:
Bluetooth Standard version 2.0
Output:
Bluetooth Standard Power Class 2 (Max. +4 dBm)
Maximum communication range:
Line of sight approx. 10 m (32.8 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)
AVRCP (Audio Video Remote Control Profile)
HFP (Handsfree Profile) 1.0
HSP (Headset Profile)
AVRCP (Audio Video Remote Control Profile)
HFP (Handsfree Profile) 1.0
HSP (Headset 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's perfomance,
operating system, software application, etc.
such as obstacles between devices, magnetic
fields around a microwave oven, static electricity,
reception sensitivity, antenna's perfomance,
operating system, software application, etc.
*2
Bluetooth standard profiles indicate the purpose of
Bluetooth communication between devices.
Bluetooth communication between devices.
Power amplifier section
Outputs: Speaker outputs (sure seal connectors)
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W
× 4 (at 4 ohms)
General
Output:
Power antenna (aerial) relay control terminal
Inputs:
Antenna (aerial) input terminal
AUM input jack (stereo mini jack)
AUM input jack (stereo mini jack)
Tone controls:
Low:
±10 dB at 100 Hz (XPLOD)
High:
±10 dB at 10 kHz (XPLOD)
Loudness:
+ 9 dB at 100 Hz
+ 5 dB at 10 kHz
+ 5 dB at 10 kHz
Power requirements: 12 V DC car battery
(negative ground (earth))
Dimensions: Approx. 178
× 50 × 179 mm
(7
1
/
8
× 2 × 7
1
/
8
in) (w/h/d)
MW
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)
MW tuning interval: 9kHz/10kHz switchable
Antenna (aerial) terminal:
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
Sensitivity: 30
Sensitivity: 30
µV
SW
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: 10.7 MHz/450 kHz
Sensitivity: 30
Sensitivity: 30
µV
Intermediate frequency: 10.7 MHz/450 kHz
Usable sensitivity: 9 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz: 0.5 % (stereo),
Usable sensitivity: 9 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz: 0.5 % (stereo),
0.3 % (mono)
Separation: 35 dB at 1 kHz
Frequency response: 30 – 15,000 Hz
Frequency response: 30 – 15,000 Hz
Mounting dimensions: Approx. 182
× 53 × 162 mm
(7
1
/
4
× 2
1
/
8
× 6
1
/
2
in) (w/h/d)
Mass: Approx. 1.2 kg (2 lb 11 oz)
Supplied accessory:
Supplied accessory:
Card remote commander: RM-X304
Parts for installation and connections (1 set)
Parts for installation and connections (1 set)
Design and specifications are subject to change
without notice.
without notice.
MPEG Layer-3 audio coding technology and
patents licensed from Fraunhofer IIS and Thomson.
patents licensed from Fraunhofer IIS and Thomson.
The use of optical instruments with this product
•
US and Canadian models:
will increase eye hazard.
CAUTION
3
MEX-BT2500
TABLE OF CONTENTS
1.
SERVICING NOTES
...............................................
4
2.
GENERAL
...................................................................
7
3.
DISASSEMBLY
3-1.
Disassembly Flow ........................................................... 17
3-2.
Cover ............................................................................... 17
3-3.
CD Mechanism Deck Block (MG-101TA-188//Q) ......... 18
3-4.
ANTENNA Board ........................................................... 18
3-5.
MAIN Board .................................................................... 19
3-6.
SERVO Board .................................................................. 19
3-7.
Chassis (T) Sub Assy ....................................................... 20
3-8.
Roller Arm Assy .............................................................. 20
3-9.
Chassis (OP) Assy ........................................................... 21
3-10. Chucking Arm Sub Assy ................................................. 21
3-11. Sled Motor Assy .............................................................. 22
3-12. Optical Pick-Up Section .................................................. 23
3-13. OP Service Assy (DAX-25A) .......................................... 23
3-11. Sled Motor Assy .............................................................. 22
3-12. Optical Pick-Up Section .................................................. 23
3-13. OP Service Assy (DAX-25A) .......................................... 23
4.
TEST MODE
.............................................................. 24
5.
DIAGRAMS
5-1.
Printed Wiring Boards – MAIN Section – ...................... 28
5-2.
Schematic Diagram – MAIN Section (1/3) – .................. 29
5-3.
Schematic Diagram – MAIN Section (2/3) – .................. 30
5-4.
Schematic Diagram – MAIN Section (3/3) – .................. 31
5-5.
Printed Wiring Board – KEY Board – ............................. 32
5-6.
Schematic Diagram – KEY Board – ............................... 33
6.
EXPLODED VIEWS
6-1.
Main Section .................................................................... 38
6-2.
Front Panel Section ......................................................... 39
6-3.
CD Mechanism Deck Section-1 (MG-101TA-188//Q) ... 40
7.
ELECTRICAL PARTS LIST
................................ 41
4
MEX-BT2500
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
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
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.
Soldering irons using a temperature regulator should be set to
about 350 ˚C.
Caution: The printed pattern (copper foil) may peel away if
Ordinary soldering irons can be used but the iron tip has to be
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
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
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.
TEST DISCS
Use following TEST DISC when this set confirms the operation
and checks it.
and checks it.
3-702-101-01 YEDS-18 (for CD)
4-225-203-01 PATD-012 (for CD)
J-2502-063-1
4-225-203-01 PATD-012 (for CD)
J-2502-063-1
TCD-R082LMT (for CD-R)
SECTION 1
SERVICING NOTES
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
Never look into the laser diode emission from right above when
checking it for adjustment. It is feared that you will lose your sight.
checking it for adjustment. It is feared that you will lose your sight.
If the optical pick-up block is defective, please replace the whole
optical pick-up block.
Never turn the semi-fixed resistor located at the side of optical pick-
up block.
optical pick-up block.
Never turn the semi-fixed resistor located at the side of optical pick-
up block.
EXTENSION CABLE AND SERVICE POSITION
When repairing or servicing this set, connect the jig (extension cable)
as shown below.
as shown below.
• Connect the MAIN board (CN350) and the SERVO board
(CN2) with the extension cable (Part No. J-2502-076-1).
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
optical pick-up
semi-fixed resistor
SERVO BOARD
(CN2)
(CN2)
MAIN BOARD
(CN350)
(CN350)
J-2502-076-1