Samsung SGH-B300 Service Manual
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Samsung SGH-B300 Service Manual

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GSM TELEPHONE
SGH-B300
GSM TELEPHONE
CONTENTS
3. Product Function
5. Exploded View and Parts list
6. MAIN Electrical Parts List
7. Disassembly and Assembly
Instructions
10. Chart of Troubleshooting

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  • Page 1: Table Of Contents

    GSM TELEPHONE SGH-B300 GSM TELEPHONE CONTENTS 1. Safety Precautions 2. Specification 3. Product Function 4. Array course control 5. Exploded View and Parts list 6. MAIN Electrical Parts List 7. Disassembly and Assembly Instructions 8. Block Diagrams 9. PCB Diagrams 10.
  • Page 2 China china.samsungportal.com Asia asia.samsungportal.com Mideast & Africa mea.samsungportal.com This Service Manual is a property of Samsung Electronics Co.,Ltd. ⓒ Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law. 2008. 04. Rev.1.0...

  • Page 3: Specification

    2. Specification 2-1. GSM General Specification EG SM 9 00 DCS1 800 Ph ase 2 Phase 1 F req. Ban d[MHz] 8 80~915 1710~1 785 Uplin k/Down link 9 25~960 1805~1 880 ARF CN ra nge 0~1 24 & 9 75~102 3 512~8 85 T x/Rx spacing 45 M Hz...

  • Page 4: Gsm Tx Power Class

    Speclflcation 2-2. GSM Tx Power Class TX Power TX Power GSM900 DCS1800 control level control level 33±2 dBm 30±3 dBm 31±2 dBm 28±3 dBm 29±2 dBm 26±3 dBm 27±2 dBm 24±3 dBm 25±2 dBm 22±3 dBm 23±2 dBm 20±3 dBm 21±2 dBm 18±3 dBm 19±2 dBm...

  • Page 5: Cellular Phone Exploded View

    5-1. Cellular phone Exploded View QRF03 QFR01 QKP01 QME01 QFU01 QCR12 QMP01 QLC02 QME16 QMI01 QSP01 QLC01 QMO01 QSH01 QAN02 QFL01 QRE01 QMW02 QCR87 QBA01 QSC01 QCR06 QBA00 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 6: Cellular Phone Parts List

    QRE01 ASSY CASE-REAR GH98-07686A QSC01 TAPE-COVER SCREW LOWER GH74-38101A QSH01 ASSY BRACKET-SHIELD CAN GH98-07685A QSP01 SPEAKER 3001-002344 QFR01 ASSY CASE-FRONT GH98-07687A QRF03 PMO COVER-EAR GH72-46664A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 7: Disassembly And Assembly Instructions

    CONNECT IF COVER HOOK 2M 카메라 HOOK 2 POINT 1) Disjoint LCD CONNECTOR. 2) Separate PBA from FRONT. 1) Seperate the IF COVER front FRONT. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 8 Release a HOOK which locate upside first. ※ Caution 1) Sperate MOTOR from the LOWER 2) Sperate SPEAKER from the LOWER 1) Be careful Hook damage when you disjoint a UPPER. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 9 1) Beware that you do not damage LCD F-PCB. 2) Beware that you do not damage F-PCB when you passing F-PCB to hole of LOWER SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 10 1) Be careful not to make scratch and molding ※ Caution 1) Arrange WIRE not to be interfered damage. 2) Check GAP is exist after finish assembly. with other components. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 11 1) Set KEYPAD on the FRONT. ※ Caution ※ Caution 1) Be careful not to make scratch and molding 1) Check the KEYPAD's guide hole. damage! SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 12 2) Check GAP is exist after finish assembly. 1) Set the IF COVER on the FRONT. 1)Attach lower screw sheet. ※ Caution 1) Be careful not to make scratch and molding damage! SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 13 Vpp >=400mV (related to OSC101) Vpp ≒ 600mV Check the clock signal at pin#5,#6 of U101 Freq = 13MHz Check U101 Check the initial operation 10-1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 14 SERCLK SERDAT RTXIN RTXIP VRF_2.9V L110 U101 C130 R106 CLK13M_TR C131 R107 CLK13M_MC C134 C133 R108 C132 L108 26M_OUT R109 R110 CLK13M_YMU R111 C135 10-2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 15: System Initial

    The voltage is "High" at Check the U300 the C313,C314,C310 LCD display is O.K Check the LCD part Check the Audio part Sound is O.K 10-3 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 16 R427 C417 C207 TP300 TA501 U501 C300 R211 Q300 R430 C407 C313 DSP_IO C310 C206 INTRQ C314 C308 C208 C309 C210 C216 OSC200 C217 10-4 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 17 KEY_ROW(4) JACK_IN PWR_KEEP SIMRST I2C_SCL LCD_DET I2C_SDA FLASH_RESET DEBUG_DTR LED_EN DEBUG_RTS CHG_OFF DEBUG_TXD DEBUG_RXD UP_CS DEBUG_CTS UP_SCLK CHG_DET UP_SDO SDS_TXD UP_SDI SDS_RXD SIMDATA SIMCLK 10-5 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 18: Sim Part

    SIM600 >= Check the U300 2.8V ? Is there any signals Check the U300 pin#2,#3,#6 of SIM600 ? Check the SIM Card 10-6 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 19 C210 C216 OSC200 C220 C217 R213 C213 CP_OEN CP_CSROMEN R108 R111 D[1] A[2] CP_WEN CP_CSRAMEN R107 C131 U101 R106 C130 R10 9 R110 C620 10-7 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 20 VREF A10 SERLE VREF SERDA SERDAT CREF SERCK RTC_ALMN H10 SERCLK RTCALARM C315 VIB_EN INTRQ INTRQ PWR_KEEP C316 TP300 100NF KEY_COL(2) Q300 C317 KEY_ROW(4) 10-8 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 21: Charging Part

    The U301 is TA_VEXT_5V 뵃 5V? Check IFC500 The pin #6 of U301 is "LOW"? Check UCP200 Charging Current is 350mA~650mA? Check U300 Check The Battery 10-9 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 22 POWER_ON CHARGING VBAT U301 1 IN BATT TA_VEXT _POK| CHG_DET R306 ISET ICHRG _EN| CHG_OFF R307 JIG_ON_IF JIG_ON C304 C305 C307 R308 C306 R309 10-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 23: Microphone Part

    P11 and Check U300,R427,R428 pin#N12 of U300 ? Is there any signals at the pin# 5 and pin# 10 Check U402 of U402 ? 10-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 24: Speaker Part

    Check U403,C429,C431 of U403 ? Is there any signals at ④ the pin# 5 and pin# 10 Check U402 of U402 ? 10-12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 25 CP_CSROMEN R108 R111 L108 C103 D[1] A[2] CP_WEN CP_CSRAMEN R107 C131 C134 U101 R101 R106 C130 C135 C102 C116 R10 9 R110 C114 C620 10-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 26 AMP_L 49 GND C429 VINP AOUTBP 51 NC R441 R442 C431 CLK13M_YMU VIB_EN AOUTBN C430 YMU_IRQ R434 MEM_RST VCCD_1.8V VCCD_2.9V C432 C437 C436 C438 10-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 27 VREF A10 SERLE VREF SERDA SERDAT CREF RTC_ALMN H10 SERCK SERCLK RTCALARM C315 VIB_EN INTRQ INTRQ PWR_KEEP C316 TP300 100NF KEY_COL(2) Q300 C317 KEY_ROW(4) 10-15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 28 Select backlight "15 sec" mode mode in the menu? Check conecting between PBA and LCD Check FPCB conector Check HEA600 △v(pin #13) = Check the LCD 3.1/2.7V(dimming) 10-16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 29 Resolder or Change osc101 U100=26Mhz Check the pin #2,3,22,23 of Resolder or Change U100 U100 Vp-p=120mV GSM RX path component GSM Receiver is O.K? resolder or change 10-17 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 30 Resolder or Change OSC101 U100=26Mhz Check the pin #2,3,22,23 of Resolder or Change U100 U100 Vp-p=120mV GSM RX path component GSM Receiver is O.K? resolder or change 10-18 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 31 PAM100 pin 4 : U300 check 2.8V ? U100 pin U300 2,3,22,23 : change or resolder PAM100 100mV ? change or resolder U100 change or resolder 10-19 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 32 PAM100 pin 4 : U300 check 2.8V ? U100 pin U300 2,3,22,23 : PAM100 change or resolder 100mV ? change or resolder U100 change or resolder 10-20 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 33 R101 C135 C102 C116 C114 C117 C107 R102 R103 C110 L105 C118 C121 C119 C122 BOTHHOLE100 C123 C124 C111 L104 L103 C137 C109 C136 10-21 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 34 GSM900_IN TX_EN TX_EN GSM1800_OUT1 DCS1800_LNA_IN_P RX2 13 C123 GSM1800_OUT1 GSM_PAM_IN GSM_IN DCS1800_LNA_IN_N GSM1800_IN DPCS_PAM_IN DCS|PCS_IN PCS1900_LNA_IN_P C124 F100 PCS1900_LNA_IN_N C125 C127 C126 C128 C129 10-22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 35: Array Course Control

    4. Array course control Test Jig (GH80-00865A) Test Cable (0.4M:GH39-00892A, 1.5M:GH39-00895A) RF Test Cable (GH39-00985A) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 36 • Three binary files for downloading B300. – B300XXYY.s3 : Main source code binary. 4-2. Pre-requsite for Downloading • Downloader Program(OptiFlash.exe) • B300 Mobile Phone • Data Cable • Binary files SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 37 2. Select the “Options” -> “Settings” -> “Generic” -> “Specify hardware platform”. Choose hardware platform for the downloader file setting. Set the everything else as the default values which are shown below SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 38 However, OptiFlash will use a slower speed if either the PC’s or the phone’s serial hardware is incapable of handling the selected speed SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 39 B300XXYY.s3”, for the downloader binary setting. Make sure that not to change the reserved memory regions. In case of B108 the reserved memory regions are : -0x00008000 – 0x0001ffff SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 40 7. After finishing downloading, Certain memory resets should be done to guarantee the normal performance. 8. Confirm the downloaded version name and etc. : *#1111# Full Reset : *2767*3855# SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 41: Block Diagrams

    8. Block Diagrams SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 42: Pcb Diagrams

    9. PCB Diagrams G101 G103 C510 TA500 ZD502 C612 C304 R309 C613 C615 C614 BTC500 HEA600 C600 R308 R306 R600 R601 C506 C601 C431 R515 R438 R603 R214 R405 C412 R442 R514 C429 R513 C428 U400 R509 C427 C424 VR501 C505 C421 L503...
  • Page 43 PCB Diagrams VR601 U201 VR600 R209 C219 L200 MENU LEFT RIGHT DOWN CLEAR VR604 VR602 VR611 KEY_1 KEY_3 KEY_2 R611 R612 KEY_4 KEY_6 KEY_5 VR603 VR605 KEY_7 KEY_9 KEY_8 R605 R604 KEY_0 9- 2...

  • Page 44: Main Function

    - Send SMS or MMS messages - Voicemail - Broadcast message - MMS profile - Wap browser - FM Radio - Java Games - Menu shortcuts SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 45: Reference Data

    PS : Pilot Symbol QPSK: Quadrature Phase Shift Keying RS : Reed-Solomon SI : Service Information TDM : Time Division Multiplexing TS : Transport Stream 11-1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 46: Safety Precautions

    ● Don't use as you pleases after change other material than replacement registered on SEC System. Otherwise engineer in charge isn't charged with problem that you don't keep this rules. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 47 ● You must maintain electric contact between ESD and place due to be set up until ESD is connected completely to the proper place or a circuit board. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 48 VARISTOR 1405-001082 VR502 VARISTOR 1405-001082 VR503 VARISTOR 1405-001082 VR601 VARISTOR 1405-001082 VR602 VARISTOR 1405-001082 VR603 VARISTOR 1405-001082 VR604 VARISTOR 1405-001082 VR612 VARISTOR 1405-001108 VR600 VARISTOR SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 49 R-CHIP 2007-000157 R431 R-CHIP 2007-000157 R435 R-CHIP 2007-000157 R438 R-CHIP 2007-000157 R512 R-CHIP 2007-000157 R600 R-CHIP 2007-000160 R433 R-CHIP 2007-000161 R400 R-CHIP 2007-000161 R404 R-CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 50 R-CHIP 2007-001288 R612 R-CHIP 2007-001291 R427 R-CHIP 2007-001291 R428 R-CHIP 2007-001292 R505 R-CHIP 2007-001292 R506 R-CHIP 2007-001308 R107 R-CHIP 2007-001325 R308 R-CHIP 2007-001325 R434 R-CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 51 C-CER,CHIP 2203-000254 C302 C-CER,CHIP 2203-000254 C305 C-CER,CHIP 2203-000278 C122 C-CER,CHIP 2203-000359 C422 C-CER,CHIP 2203-000386 C130 C-CER,CHIP 2203-000425 C123 C-CER,CHIP 2203-000425 C216 C-CER,CHIP 2203-000425 C217 C-CER,CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 52 C-CER,CHIP 2203-000812 C619 C-CER,CHIP 2203-000854 C100 C-CER,CHIP 2203-000854 C103 C-CER,CHIP 2203-000854 C104 C-CER,CHIP 2203-000940 C616 C-CER,CHIP 2203-000995 C108 C-CER,CHIP 2203-000995 C110 C-CER,CHIP 2203-000995 C219 C-CER,CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 53 C-CER,CHIP 2203-005482 C431 C-CER,CHIP 2203-005482 C436 C-CER,CHIP 2203-005482 C503 C-CER,CHIP 2203-005482 C510 C-CER,CHIP 2203-005482 C600 C-CER,CHIP 2203-005993 C405 C-CER,CHIP 2203-005993 C410 C-CER,CHIP 2203-006047 C115 C-CER,CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 54 C-CER,CHIP 2203-006562 C434 C-CER,CHIP 2203-006562 C437 C-CER,CHIP 2203-006562 C506 C-CER,CHIP 2203-006626 C106 C-CER,CHIP 2203-006824 C312 C-CER,CHIP 2203-006824 C314 C-CER,CHIP 2203-006824 C423 C-CER,CHIP 2203-006841 C605 C-CER,CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 55 3711-005954 HEA600 HEADER-BOARD TO BOARD 3711-006228 BTC500 HEADER-BATTERY Please consult the GSPN website (Samsung Portal) for the most recent version of the product's part list. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 56 www.s-manuals.com...

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