Sony DSX-M50BT Service Manual
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Sony DSX-M50BT Service Manual

Sony DSX-M50BT Service Manual

Fm/am digital media player sony dsx-m50bt
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SERVICE MANUAL
Ver. 1.0 2013.11
• This model is not equipped with a mechanism deck.
FOR THE CUSTOMERS IN THE USA. NOT
APPLICABLE IN CANADA, INCLUDING IN
THE PROVINCE OF QUEBEC.
POUR LES CLIENTS AUX ÉTATS-UNIS. NON
APPLICABLE AU CANADA, Y COMPRIS LA
PROVINCE DE QUÉBEC.
AUDIO POWER SPECIFICATIONS
CEA2006 Standard
Power Output: 17 Watts RMS × 4 at
4 Ohms < 1% THD+N
SN Ratio: 80 dBA
(reference: 1 Watt into 4 Ohms)
Tuner section
FM
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)
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
9-893-910-01
Sony Corporation
2013K33-1
©
2013.11
Published by Sony Techno Create Corporation
DSX-M50BT

SPECIFICATIONS

AM
Tuning range:
531 – 1,602 kHz (at 9 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)
Sensitivity: 26 μV
USB Player section
Interface: USB (Full-speed)
Maximum current: 1 A
The maximum number of recognizable data:
Folders (albums): 128
Files (tracks) per folder: 512
Corresponding codec:
MP3 (.mp3) and WMA (.wma)
Wireless Communication
Communication System:
BLUETOOTH Standard version 2.1 + EDR
Output:
BLUETOOTH Standard Power Class 2
(Max. +4 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*
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 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.
*2 BLUETOOTH standard profiles indicate the
purpose of BLUETOOTH communication
between devices.
Power amplifier section
Output: Speaker outputs
Speaker impedance: 4 – 8 ohms
Maximum power output: 55 W × 4 (at 4 ohms)
General
Outputs:
Audio outputs terminal (front, rear)
Power antenna (aerial)/Power amplifier
control terminal (REM OUT)
FM/AM DIGITAL MEDIA PLAYER
US Model
Canadian Model
Inputs:
Remote controller input terminal
Antenna (aerial) input terminal
AUX input jack (stereo mini jack)
USB port
Power requirements: 12 V DC boat battery
(negative ground (earth))
Dimensions:
Approx. 178 mm × 50 mm × 120 mm
1
7
(7
/
in × 2 in × 4
/
in) (w/h/d)
8
8
Mounting dimensions:
Approx. 182 mm × 53 mm × 103 mm
(7
1
/
in × 2
1
/
in × 4
1
/
in) (w/h/d)
4
8
8
Mass: Approx. 0.7 kg (1 lb 9 oz)
Package contents:
Remote commander (1): RM-X231
Parts for installation and connections (1 set)
Design and specifications are subject to
change without notice.
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Summary of Contents for Sony DSX-M50BT

  • Page 1: Specifications

    (REM OUT) Separation: 50 dB at 1 kHz Line of sight approx. 10 m (33 ft)* Frequency response: 20 – 15,000 Hz FM/AM DIGITAL MEDIA PLAYER 9-893-910-01 Sony Corporation 2013K33-1 © 2013.11 Published by Sony Techno Create Corporation...

  • Page 2: Table Of Contents

    ..........The Bluetooth® word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such GENERAL marks by Sony Corporation is under license..............Other trademarks and trade names are those of their respective owners. DISASSEMBLY 3-1.

  • Page 3: Servicing Notes

    DSX-M50BT SECTION 1 SERVICING NOTES UNLEADED SOLDER ABOUT CHECKING THE OPERATION Boards requiring use of unleaded solder are printed with the lead- When checking the operation of this unit, connect a USB device free mark (LF) indicating the solder contains no lead.
  • Page 4 DSX-M50BT NOTE OF REPLACING THE COMPLETE MAIN BOARD • Method of operation by remote commander OR SYSTEM CONTROLLER (IC101) When the complete MAIN board or system controller (IC101) is replaced, the destination setting is necessary. 1. Destination Setting Set destination according to the procedure below.
  • Page 5 2. Preparation “HF” icon ( ) lights. • Confi rm the setting of the DSX-M50BT, and note down it. 5. Confi rm the connection continues even if the distance of the • Press the [CALL] button and rotate the control dial until cellular phone and this unit is separated by about 5 m.

  • Page 6: General

    ( -A). alimentée en permanence Sony highly recommends to protect the unit with Asegúrese de conectar un altavoz potenciador de graves de 4 a Mises en garde Commencez par raccorder le câble de mise à la masse noir à la Waterproof Car Stereo Cover (not supplied).
  • Page 7 Mounting the unit in a Japanese car ( ) You may not be able to install this unit in some makes of Japanese cars. In such a case, consult your Sony dealer. Note To prevent malfunction, install only with the supplied screws...

  • Page 8: Disassembly

    DSX-M50BT SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW FRONT PANEL ASSY Note: Illustration of disassembly is omitted. 3-2. FUSE (BLADE TYPE) (AUTO FUSE) (10A/32V) (FU101), COVER (Page 8) 3-3. SUB PANEL BLOCK (Page 9) 3-4.

  • Page 9: Sub Panel Block

    DSX-M50BT 3-3. SUB PANEL BLOCK 1 filament tape 3 two claws BT board connector (CN1004) MAIN board 5 sub panel block Note 1: Where USB cover is closed, remove the sub panel block. 3 two claws filament tape 4 two claws...

  • Page 10: Main Board (With Bt Board)

    DSX-M50BT 3-4. MAIN BOARD (WITH BT BOARD) Note 1: When the complete MAIN board is replaced, it is necessary Note 2: When the complete MAIN board is replaced, the destination to confi rm operation. Refer to “BLUETOOTH FUNCTION setting is necessary. Refer to “NOTE OF REPLACING THE CHECKING METHOD USING A CELLULAR PHONE”...

  • Page 11: Test Mode

    DSX-M50BT SECTION 4 TEST MODE SETTING THE TEST MODE Setting method: 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 [1] (press only the [1] button for two seconds).
  • Page 12 DSX-M50BT MEMO...

  • Page 13: Diagrams

    DSX-M50BT SECTION 5 DIAGRAMS 5-1. BLOCK DIAGRAM - MAIN Section - J301 FRONT R-CH AUDIO OUT REAR R-CH CN201 CENTER VOLTAGE +8.5V GENERATOR POWER AMP IC303 IC304 CN102 (1/2) UDP1 LFOUT IN_FL D– 68 UDM1 FL– FL– VBUS USB VBUS...

  • Page 14: Block Diagram - Display/Power Supply Section

    DSX-M50BT 5-2. BLOCK DIAGRAM - DISPLAY/POWER SUPPLY Section - SYSTEM CONTROLLER IC101 (2/2) CN102 (2/2) 88 RCIN1 J101 (REMOTE IN) 95 RC_IN0 KEYACK0 REGULATOR IC401 FU101 RESET SIGNAL +3.3V KEY BOARD RESET GENERATOR REGULATOR VDD (BACKUP5V) IC105 IC102 VCC1 LCD_DATA...
  • Page 15 DSX-M50BT THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. • Waveforms (In addition to this, the necessary note is printed in each block.) – MAIN Board – For Printed Wiring Boards. For Schematic Diagrams. IC201 ug (X12OUT)

  • Page 16: Printed Wiring Board - Main Section (1/2)

    DSX-M50BT 5-3. PRINTED WIRING BOARD - MAIN Section (1/2) - • : Uses unleaded solder. MAIN BOARD (COMPONENT SIDE) (CHASSIS) CAM251 C314 R328 R331 C327 C313 C321 R333 C310 C320 R325 R332 R326 R329 R330 R327 IC301 C326 R322 R111...

  • Page 17: Printed Wiring Boards - Main Section (2/2)

    DSX-M50BT 5-4. PRINTED WIRING BOARDS - MAIN Section (2/2) - • : Uses unleaded solder. J301 AUDIO OUT MAIN BOARD FRONT REAR (CONDUCTOR SIDE) WHT/BLK FRONT LCH (–) FRONT LCH (+) J101 J303 FU101 GRN/BLK (REMOTE IN) REAR LCH (–)

  • Page 18: Schematic Diagram - Main Section (1/3)

    DSX-M50BT 5-5. SCHEMATIC DIAGRAM - MAIN Section (1/3) - • See page 15 for Waveforms. • See page 21 for IC Block Diagrams. • See page 23 for IC Pin Function Description. MAIN BOARD (1/3) J301 REAR Q301 Q302 Q303...

  • Page 19: Schematic Diagram - Main Section (2/3)

    DSX-M50BT 5-6. SCHEMATIC DIAGRAM - MAIN Section (2/3) - • See page 15 for Waveforms. • See page 21 for IC Block Diagrams. • See page 23 for IC Pin Function Description. ANT601 MIC601 BOARD MAIN BOARD (2/3) BT_MUTE DGND...

  • Page 20: Schematic Diagram - Main Section (3/3)

    DSX-M50BT 5-7. SCHEMATIC DIAGRAM - MAIN Section (3/3) - • See page 21 for IC Block Diagrams. MAIN BOARD (3/3) IC B/D IC304 POWER AMP IC304 PURE5001H-4WX CN102 FRONT LCH (+) FRONT LCH (–) REAR LCH (+) REAR LCH (–)
  • Page 21 DSX-M50BT • IC Block Diagrams – MAIN Board – IC102, 601 MM1836A33NRE CONT 1 BIAS CURRENT LIMIT – REGULATOR VOUT VOLTAGE THERMAL REFERENCE SHUTDOWN GND 2 NC 3 IC304 PURE5001H-4WX HIGH SIDE DRIVER 7 8 9 17 18 19 23 24...
  • Page 22 DSX-M50BT IC402 S-1142B90I-E6T1U VOUT 1 OVERCURRENT PROTECTOR THERMAL SHUTDOWN ON/OFF CONTROL – VSS 2 REFERENCE VOLTAGE ON/OFF 3 IC501 OZ539IGN-A1-0-TR IC603 NJM2884U2-05 (TE2) BST 1 VREF OSCILLATOR LX 2 REFERENCE THERMAL GENERATOR OVER CURRENT PROTECTION PROTECTION BANDGAP GNDA REFERENCE VIN 3...
  • Page 23 DSX-M50BT • IC Pin Function Description MAIN BOARD IC101 R5F3650KCDZ93FB (SYSTEM CONTROLLER) Pin No. Pin Name Description NOSE_SW Front panel remove/attach detection signal input terminal “L”: front panel is attached SIRCS Remote control signal input from the front panel block...
  • Page 24 DSX-M50BT Pin No. Pin Name Description AMP_REM Amplifi er remote output on/off control signal output terminal “H”: output on SYS_EN System power on/off control signal output terminal “H”: power on AUDIO_EN Power supply on/off control signal output terminal for audio section “H”: power on...
  • Page 25 DSX-M50BT MAIN BOARD IC201 LC786800E-06US-H (USB CONTROLLER, INPUT SELECTOR, AUDIO DSP, ELECTRICAL VOLUME) Pin No. Pin Name Description LFOUT Audio signal (front L-ch) output terminal LROUT Audio signal (rear L-ch) output terminal LVRIN Audio signal (L-ch) input terminal DACOUT_L Audio signal (L-ch) output terminal...
  • Page 26 DSX-M50BT Pin No. Pin Name Description 78, 79 VVDD2, VVDD3 Power supply terminal (+3.3V) (for PLL) DVSS Ground terminal (for digital system) DVDD Power supply terminal (+3.3V) (for digital system) CP-SCL Serial data transfer clock signal output to the EEPROM...

  • Page 27: Exploded View

    DSX-M50BT SECTION 6 EXPLODED VIEW Note: • -XX and -X mean standardized parts, so • The mechanical parts with no reference they may have some difference from the number in the exploded views are not sup- original one. plied. • Items marked “*” are not stocked since •...

  • Page 28: Electrical Parts List

    DSX-M50BT SECTION 7 MAIN ELECTRICAL PARTS LIST Note: • Due to standardization, replacements in • CAPACITORS When indicating parts by reference num- uF: μF the parts list may be different from the ber, please include the board name. parts specifi ed in the diagrams or the com- •...
  • Page 29 DSX-M50BT MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C290 1-125-777-11 CERAMIC CHIP 0.1uF C514 1-114-330-11 CERAMIC CHIP 2.2uF C291 1-118-290-11 CERAMIC CHIP 0.001uF C515 1-112-034-91 CERAMIC CHIP 0.01uF C301 1-164-882-11 CERAMIC CHIP 220PF C516 1-114-582-91 CERAMIC CHIP 0.1uF...
  • Page 30 DSX-M50BT MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < IC > R138 1-218-977-11 METAL CHIP 100K 1/16W R139 1-208-911-11 METAL CHIP 0.5% 1/16W IC101 6-721-155-01 IC R5F3650KCDZ93FB (for SERVICE) R140 1-208-911-11 METAL CHIP 0.5%...
  • Page 31 DSX-M50BT MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R220 1-218-977-11 METAL CHIP 100K 1/16W R332 1-218-965-11 METAL CHIP 1/16W R221 1-218-977-11 METAL CHIP 100K 1/16W R333 1-218-945-11 METAL CHIP 1/16W R222 1-218-973-11 METAL CHIP...
  • Page 32 DSX-M50BT Ref. No. Part No. Description Remark MISCELLANEOUS ************** ANT601 1-754-894-11 BT, ANTENNA A-1978-124-A PANEL ASSY, FRONT FU101 1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10 A/32 V) MIC601 1-542-919-11 MICROPHONE 1-846-997-11 CONNECTION CABLE, AUTOMOBILE (POWER) ************************************************************ ACCESSORIES ************ 1-489-810-42 REMOTE COMMANDER (RM-X231)
  • Page 33 DSX-M50BT MEMO...

  • Page 34: Revision History

    DSX-M50BT REVISION HISTORY Checking the version allows you to jump to the revised page. Also, clicking the version at the top of the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2013.11...

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