DOWNLOAD Sony MEX-BT2500 Service Manual ↓ Size: 4.98 MB | Pages: 48 in PDF or view online for FREE

Model
MEX-BT2500
Pages
48
Size
4.98 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
mex-bt2500.pdf
Date

Sony MEX-BT2500 Service Manual ▷ View online

SERVICE MANUAL
BLUETOOTH AUDIO SYSTEM
SPECIFICATIONS
MEX
-
BT2500
US and foreign patents licensed from Dolby
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
Sony Corporation
eVehicle Division
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.
Microsoft, Windows Media, 
and the Windows logo are 
trademarks or registered 
trademarks of Microsoft 
Corporation in the United States and/or other 
countries.
CD Player section
Signal-to-noise ratio: 95 dB
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:
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),
0.3 % (mono)
Separation: 35 dB at 1 kHz
Frequency response: 30 – 15,000 Hz
AM
Tuning range: 530 – 1,710 kHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
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.
CEA2006 Standard
Power Output: 17 Watts RMS 
× 4 at 
4 Ohms < 1% THD+N 
SN Ratio: 82 dBA 
(reference: 1 Watt into 4 Ohms)
FM
Tuning range: 87.5 – 108.0 MHz
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),
0.3 % (mono)
Separation: 35 dB at 1 kHz
Frequency response: 30 – 15,000 Hz
MW/LW
Tuning range:
MW: 531 – 1,602 kHz
LW: 153 – 279 kHz
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
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)
FM tuning interval: 50 kHz/200 kHz switchable
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.
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.
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.
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*
2
:
A2DP (Advanced Audio Distribution 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.
*2
Bluetooth standard profiles indicate the purpose of 
Bluetooth communication between devices.
Power amplifier section
Outputs: Speaker outputs (sure seal connectors)
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)
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
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)
MW tuning interval: 9kHz/10kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
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)
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 10.7 MHz/450 kHz
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),
0.3 % (mono)
Separation: 35 dB at 1 kHz
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:
Card remote commander: RM-X304
Parts for installation and connections (1 set)
Design and specifications are subject to change 
without notice.
MPEG Layer-3 audio coding technology and 
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
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
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
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.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
TEST  DISCS
Use following TEST DISC when this set confirms the operation
and checks it.
3-702-101-01 YEDS-18 (for CD)
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.
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.
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.
EXTENSION  CABLE  AND  SERVICE  POSITION
When repairing or servicing this set, connect the jig (extension cable)
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
optical pick-up
semi-fixed resistor
SERVO BOARD
(CN2)
MAIN BOARD
(CN350)
J-2502-076-1
Page of 48
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  • DOWNLOAD Sony MEX-BT2500 Service Manual ↓ Size: 4.98 MB | Pages: 48 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony MEX-BT2500 in PDF for free, which will help you to disassemble, recover, fix and repair Sony MEX-BT2500 Car Audio. Information contained in Sony MEX-BT2500 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.