SERVICE
PORTABLE DIGITAL AUDIO PLAYER
Model : YP-T55
PORTABLE DIGITAL AUDIO PLAYER
Basic Model : YP-T55
* Application : YP-T55ZW/XET
- MP3,WMA ,OGG Playback
- Removable Storage Device
- Voice Recording Function
- FM Reception
- DNSe Surround Sound
- USB 2.0 High Speed Data Transfer
- Upgradable Firmware
Manual
Features
- Confidential -

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   Summary of Contents for Samsung YP-T55

  • Page 1

    PORTABLE DIGITAL AUDIO PLAYER Basic Model : YP-T55 * Application : YP-T55ZW/XET SERVICE Manual PORTABLE DIGITAL AUDIO PLAYER Features - MP3,WMA ,OGG Playback - Removable Storage Device - Voice Recording Function - FM Reception - DNSe Surround Sound - USB 2.0 High Speed Data Transfer...

  • Page 2

    ELECTRONICS © Samsung Electronics Co.,Ltd. JAN. 2006 Printed in Korea Code no. AH68-01819A...

  • Page 3: Table Of Contents

    INDEX Exploded View & Parts List Precautions 1. Total Exploded View 2. Parts List 1-1. Safety Precautions 1-2. Servicing Precautions 1-3. Precautions for Electrostatically Electrical Parts List Sensitive Device (ESDs) Electrical Parts List 1-4. Special Precations and Waring Lables for Laser Products 1-5.

  • Page 4: Safety Precautions

    Examples: Handle brackets, Metal Part metal cabinets, screwheads and control shafts. The current measured should not Ohmmeter exceed 0.5 milliamp. Reverse the power- plug prongs in the AC outlet and repeat. Fig. 1-2 Insulation Resistance Test Samsung Electronics...

  • Page 5: Servicing Precautions

    Make sure that the 8. Always connect a test instrument's ground portion around the serviced part has not lead to the instrument chassis ground been damaged. before connecting the positive lead; always remove the instrument's ground lead last. Samsung Electronics...

  • Page 6

    SCAN : Manufactured for Scandinavian KATSO SATEESEEN! Market. VARNING: OSYNLIG LASERSTRÅLNING NAR DENNA DEL AR OPPNAD OCH SPARREN AR URKOPPLAD BETRAKTA EJSTRÅLEN! Fig. 1-4 Warning Labels (Location: Disc Clamper, Inner Side of Unit Door or Nearby Unit Chassis ) Samsung Electronics...

  • Page 7: Special Precautions For Hdd

    2. In order to safe keep the data on the HDD, back up the data before the repair or make sure not to place the HDD near any electrical appliance that generates a strong magnetic field. Samsung Electronics...

  • Page 8: Product Feature

    The 3D surround feature adds spaciousness to the sound. DNSe Surround Sound Maximum data speed transfer of 25 Mbps. USB 2.0 High Speed Data Transfer You can upgrade the built-in programs when available. Upgradable Firmware Please check the home page (www.samsung.com) for upgrades. Samsung Electronics...

  • Page 9: Specifications

    2. Specifications Model YP-T55 Voltage 1.5V X 1 (AAA/LR03 size alkaline battery) Playing time lasts up to 18hours (MP3 128 Kbps, Volume 15, Normal Sound Mode) Dimensions/Weight 23 X 70 X 23 mm / 45 g Case Plastic/Aluminum Noise Ratio...

  • Page 10: Accessories

    3. Accessories Accessories Name Code No. AH30-00084D Earphones AH39-00731A USB Cable AH39-00768A Line-In Cable Samsung Electronics...

  • Page 11: Basic Functions

    Display EQ/DNSe indicator Track Number indicator Play mode indicator Remaining Battery Power Play/Stop/Pause 001/020 indicator indicator Title (track & artist) indicator 00:01:30 Playtime indicator - The screen pictures are for illustration purposes only. The actual screen may differ. Samsung Electronics...

  • Page 12: Playing Music And Turning Off The Device, To Search For Specific Parts During Play

    - If the Memory is full, Voice Recording is stopped automatically. - Voice recording does not work in FM mode or when the line in cable is connected. - Beeps are disabled while recording. - For voice recording, the bit rate is fixed to 32Kbps. Samsung Electronics...

  • Page 13: Listening To Fm Radio, Selecting The Playmode, Manual Storage Of A Frequency

    USER button. After selecting the “Y”, press the NAVI button. - DNSe is a sound quality enhancement function for MP3 players developed by Samsung The saved PRESET number will be deleted. and provides 3D and Bass Enhance modes. 3D provides stereophonic surround effect and Bass Enhance reinforces bass sound of music.

  • Page 14: New Functions

    Bitrate On or Off. On: Bit rate is displayed at the top of the screen. Auto Sync Off: The total number of tracks is displayed at the top of 03 sec Bitrate the screen. Samsung Electronics Samsung Electronics...

  • Page 15: Pc Connection

    You may not see the display screen during installation. Go to the device manager to check that installation has been successfully completed. Upon installation of the USB driver "Samsung YP-T55 USB Device" will appear in the [System Properties] [Device Manager].

  • Page 16: How To Recover The Device

    4. Adjustments 1.How to recover the device YP-T55 YP-T55 Samsung Electronics Samsung Electronics...

  • Page 17

    YP-T55 YP-T55 Samsung Electronics...

  • Page 18

    2. How to upgrade Firmware YP-T55 YP-T55 YP-T55 YP-T55 Samsung Electronics...

  • Page 19

    5. How to disassemble Order(Description) Picture 1.Remove the 2 screws on the rear side of the player. 2.Lift the HOLD S/W up with pincet carefully. 3.Remove the screw on the battery socket. 4.Lift the battery socket up lightly. Samsung Electronics...

  • Page 20

    PCB. 6.Pull out the blue arrow part. Push the red arrow part to the body. And disassble the PCB from the Battery Case. 7. Open the connector jack and disassble the LCD. 8. Disassembly Complete. Samsung Electronics...

  • Page 21: Power Failure

    Check if C54 is 1.5V ,C55 is 3.0V? Is the Recovery mode Is the Clock Is the battery signal? voltage? connected? Complete ! Is the voltage in the battery pack? Replace IC8 Replace PCB (STMP3520B) Replace the battery Replace Battery connector Samsung Electronics...

  • Page 22: No Audio Sounds

    2. No audio sounds Is the earphone Is the same symptoms Replace the inserted after replacement? Earphone properly? Replace the Earphone Jack Does the SONG Does YEPP LOGO play after Jack SONG play? repair? Samsung Electronics...

  • Page 23: Cannot Make A Voice Recording

    Replace Switch the “REC/USER” button? the “REC/USER” button? Does the recording Time Upgrade Firmware and Try proceed? Does the Recording Is the MIC,C1,R46 Redo soldering and recheck file play normally? soldering normal? Complete ! Replace MIC and Recheck Samsung Electronics...

  • Page 24: Buttons Do Not Work

    Does buttons work Upgrade Firmware and after replace Battery? Format all data. Is there odd material Is the HOLD switch between button and Replace Switch set to OFF? knob? Recheck the button after Replace PCB. remove odd material Samsung Electronics...

  • Page 25: Cannot Download A File From The Pc

    Does “unknown upgrade Firmware to displayed in “My device” appear on the computer”? Recovery Mode? Device manager? Install drivers and recheck Recheck Is it possible to access Does the format pro- the data? ceed in the FINDER? Complete! Samsung Electronics...

  • Page 26: Total Exploded View

    1. Total Exploded View AK280 AS099 AA169 AC037 AC310 AH425 AK200 AS076 AK423 AS180 AK265 AW120 AK424 AB152 AK151 AC000 AA161 AH010 AS082 AH382 AS302 AA250 AA001 AH206 AR060 AC019 AB328 AS045 AA168 AB070 AC320 AA050 AC180 AA002 Samsung Electronics...

  • Page 27

    - le - Location Part No. Description; Specification Q’TY AA001 AH97-01568A ASSY CABINET-BACK;-,-,- AA002 AH97-01552A ASSY-CABINET-BATTERY;-,YP-T55,- AA161 AH97-01551A ASSY KNOB-VOLUME;-,YP-T55,- AA168 AH97-01550G ASSY KNOB-FF;-,YP-T55,- AA169 AH97-01561A ASSY KNOB-PLAY;-,YP-T55,- AA250 AH97-01567D ASSY-WINDOW LCD;-,-,- AB070 AH61-02106A BRACKET-BATTERY +;YP-T55,PBS,-,-,-,-,- AB152 AH61-02105A BRACKET-FF;YP-T55,SUS,-,-,-,-,-...

  • Page 28: Electrical Parts List

    Location no. Code no. Description & Specification Remarks Location no. Code no. Description & Specification Remarks YP-T55ZW/XET Parts List ***** ***** AH61-02108A BRACKET-GROUND;YP-T55,Be-Cu,-,-,-,-,- AH61-02116A SPRING ETC-BATTERY;YP-T55,SUS,-,-,-,-,-, 2203-000330 C-CER,CHIP;0.012nF,5%,50V,C0G,1005 2203-000438 C-CER,CHIP;1nF,10%,50V,X7R,1005 2203-002709 C-CER,CHIP;100nF,+80-20%,16V,Y5V,1005 2203-005089 C-CER,CHIP;0.002nF,0.25pF,50V,TH,TP,1005 2203-000233 C-CER,CHIP;0.1nF,5%,50V,C0G,1005 2203-002717 C-CER,CHIP;10nF,+80-20%,50V,Y5V,1005 2404-001407 C-TA,CHIP;330uF,20%,2.5V,-,REEL,3528 2203-005900 C-CER,CHIP;1000NF,+80-20%,10V,Y5V,1005...

  • Page 29

    9. Block Diagram Samsung Electronics...

  • Page 30: Wiring Diagram

    10. Wiring Diagram * CON1: LCD FPCB CONNECTOR [17P Connector] (Reverse Insertion Protection as Mechanism) Samsung Electronics...

  • Page 31

    11. PCB Diagram - This Document can be used without Samsung’s authorization - VIEW VIEW Power Audio Oscillator Stage Output Pole BOTT TTOM VIEW * BO VIEW Receiver Connection Part Audio Output Connection Part Audio Output 11-1 Samsung Electronics...

  • Page 32: Main

    12. Schematic Diagram - This Document can be used without Samsung’s authorization - µ 1. MAIN Samsung Electronics 12-1...

  • Page 33

    1-2. SELF-TEST Manual - This Document can be used without Samsung’s authorization - Crystal Oscillator : Clock Signal Battery Input Voltage, MAIN-IC Input Voltage MAIN-IC Output Voltage, Memory-IC,FM Module 12-2 Samsung Electronics...

  • Page 34

    Battery Input Voltage, Audio Output Waveform MAIN-IC Input Voltage Samsung Electronics 12-3...

  • Page 35

    13. Circuit Description - This Document can be used without Samsung’s authorization - 1. Description of the Circuit 1-1. Main Blocks in the Circuit Diagram Power Part USB Connector Audio Output Voice Recording Module Samsung Electronics 13-1...

  • Page 36: Main Functions By Block

    * Provides input signal from TACT S/W*4 and LEVER S/W*1 to the Micom IC. 8. Power Block * Receives the battery voltage and supplies the voltage to the DC-convertor. 9. Main IC(STMP3520B) Block * the operation circuit for Main IC 13-2 Samsung Electronics...

  • Page 37

    ATRAC(3) : Adaptive TRansform Acoustic Coding (SONY) EPAC : Enhanced Perceptual Audio Coder (Luscent Technology) OGG : Ogg Vorbis DECODING : Process of recovering the digital data encoded to the data before encoding D/A : Process of converting Digital Data to Analog Data Samsung Electronics 14-1...

  • Page 38

    Yepp Block Diagram 14-2 Samsung Electronics...

  • Page 39

    Flash memory is embedded to store the data even if the power is turned off and it is a super-high speed product that can record up to 250 characters per second.(mass production of 8MB, 16MB, 32MB currently at Samsung Electronics) OTP (Once Time Programmable) OTP is one type of micro controller(MCU) and is the customer-oriented semi-conductor on which the customers can directly record the program.

  • Page 40: Copyright

    SecuMAX server and utilized as a basic data for performing user certification role. After registration, download the dedicated player and decryption key to use service. Music drive developed by Samsung Electronics is embedded with SecuMAX decryption module. Decryption key will be registered during installation of music drive. Music file downloaded from digi- tal contents music service site with SecuMAX can be played back.

  • Page 41

    Layer-2. In general, it is called MP3 since Layer-1 has compression rate of 1:4, Layer-2 of 1:61:8, Layer-3 of 1:101:12. Using MP3 technology, up to 100 songs(7 hours) can be contained in one copy of empty CD of 650MB. Transition of Portable Player Samsung Electronics 14-5...

  • Page 42

    16Kbps-32Kbps using [RealAUDIO G2 Music Codec] as com- pression type. Since streaming play in Internet radio is the main purpose, file does not contain copyright protection technology. “Real Player G2” supports MP3 play- back and “Real Juke Box” supports encoding from CD to MP3. 14-6 Samsung Electronics...

  • Page 43

    There is no difference in sound quality between MP3 and CD since encoding(converting CD track to MP3) is done with 44.1KHz at 16 bit. Better CD sound quality cannot be obtained by lower- ing the sampling rate, but the capacity can be reduced. Samsung Electronics 14-7...

  • Page 44

    Of course, MP3 also supports VBR format, but has effect of reducing capacity due to VBR based on existing MP3. Ogg Vorbis file supports VBR by default and helps you enjoy high quality music with- out loss due to big width of bit rate. 14-8 Samsung Electronics...

  • Page 45

    / Flash Memory : MP3 Player, Digital audio player Type of Digital audio player storage. Audio Format Table * SSFDC (Solid State Floppy Disc Card) File System * Standard file system for support of SMC's compatibility(DOS/FAT adopted) Samsung Electronics 14-9...

  • Page 46

    Small Form - factor Cards Comparison 14-10 Samsung Electronics...

  • Page 47

    However, as online MP3 sales have resolved, the number of legal Internet site has increased. However, reproduction prevention system is required for legal sales. All Internet sites serving Korean song in MP3 are introducing reproduction prevention system. Samsung Electronics 14-11...

  • Page 48

    Meaning of SecuMAX System Application Most legal Internet MP3 service sites adopt SecuMAX and YEPP of Samsung and several compa- nies have hardware supporting SecuMAX among MP3 players currently distributed. Then, user needs to receive MP3 applied with SecuMAX to receive legal service. It is required to have program that can play back MP3 applied with SecuMAX technology in MP3 player.

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