Samsung SGH-C250 Service Manual
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Samsung SGH-C250 Service Manual

Samsung SGH-C250 Service Manual

Gsm telephone
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GSM TELEPHONE
SGH-C250
GSM TELEPHONE
CONTENTS
1. Specification
2. Exploded View and Parts list
3. Chart of Troubleshooting
4. Array course control
5. Block Diagrams
6. PCB Diagrams
7. MAIN Electrical Parts List
8. Reference data
9. Safety Precautions
10. Product Function

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Summary of Contents for Samsung SGH-C250

  • Page 1 GSM TELEPHONE SGH-C250 GSM TELEPHONE CONTENTS 1. Specification 2. Exploded View and Parts list 3. Chart of Troubleshooting 4. Array course control 5. Block Diagrams 6. PCB Diagrams 7. MAIN Electrical Parts List 8. Reference data 9. Safety Precautions 10. Product Function...

  • Page 2: Table Of Contents

    Contents 1. Specification 1-1. GSM General Specification ..................1-1 1-2. GSM TX power class ....................1-2 2. Exploded View and Parts list 2-1. Cellular phone Exploded View ..................2-1 2-2. Cellular phone Parts list ....................2-2 2-3. Disassembly .......................2-9 2-4. Assembly ........................2-11 3. Chart of Troubleshooting 3-1.
  • Page 3 Contents 4. Array course control 4-1. Downloading Binary Files ..................4-2 4-2. Pre-requsite for Downloading ................4-2 4-3. S/W Downloader Program ..................4-3 5. Block Diagrams 6. PCB Diagrams 7. MAIN Electrical Parts List 8. Reference data 8-1. Reference Abbreviate ....................8-1 9. Safety Precautions 9-1.

  • Page 4: Specification

    1. Specification 1-1. GSM General Specification EGSM 900 DCS1800 Phase 2 Phase 1 Fr eq. Band[ MHz] 880~91 5 1710~ 1785 Uplink/Downlink 925~96 0 1805~ 1880 ARFCN rang e 0 ~124 & 975~1 023 512~ 885 Tx/ Rx spacing 45 M Hz 95 MHz Mod.

  • Page 5: Gsm Tx Power Class

    Speclflcation 1-2. 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 6: Exploded View And Parts List

    QRF03 QFU01 QME03 QVO01 QMO01 QLC01 QKP01 QSP01 QHI01 QCR17 QMP01 QME01 QAN05 QMI01 QCR12 QSC02 QFL01 QBR01 QSC01 QAN02 QMW02 QRE01 QBA01 QCR05 QBA00 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 7: Cellular Phone Parts List

    GH73-08669A QSP01 SPEAKER 3001-002097 QVO01 PMO-VOL KEY GH72-36007A QFL01 ASSY CASE-FOLDER LOWER GH98-03093A QHI01 ASSY MEC-HINGE GH75-07998A QFR01 ASSY CASE-FRONT GH98-03094A QRF03 PMO-COVER EAR GH72-36008A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 8 MPR-VINYL BOHO DUMMY GH74-30030A MPR-TAPE LCD GH74-30032A MPR-SPONGE GH74-30350A MPR-SPONGE GH74-30350A MPR-SPONGE GH74-30351A MPR-TAPE KEY A GH74-30691A MPR-TAPE KEY B GH74-30692A MPR-TAPE LCD SOLD GH74-30693A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 9: Disassembly

    1) Be careful not to make scratch and molding damage! Be careful not to damage! 2) Be careful not to damage LCD FPCB! 2) Be careful not to damage LCD FPCB! SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 10 2) Melt the lead of motor and speaker's joint 1) Be careful not to damage the LCD FPCB and LCD ※ caution 1) Be careful not to make scratch and molding damage! PANNEL SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 11: Assembly

    ※ caution ※ caution 1) Be careful not to make scratch and molding 1) When inserted FPCB, Arrange Wires clearly as damage! above picture is shown. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 12 ※ caution incorrectly![Put KEYPAD Holes into FRONT 1) Be careful not to make scratch and molding Projection correctly! damage! 2) Do not miss side key SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 13 1) Screw up the REAR at 4 Points. [M1.4*L3] ※ caution 1) Be careful not to make scratch and molding damage! 2) Use 1.1 ± 0.2 Kgf.cm! SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 14 Exploded View and Parts List SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 15: Chart Of Troubleshooting

    (related to OSC300) Vpp ≒ 600mV ⑤ Check the clock signal at pin#5,#6 of U303 ⑥ Check U303 Freq = 13MHz Check the initial operation SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 16: Flow Chart Of Troubleshooting

    OCTL7 TX_EN SERLE1 SERLE2 SERLE VREF VREF CREF E9 SERDA SERDAT SERCK RTC_ALMN H10 SERCLK RTCALARM C120 VIB_EN INTRQ PWR_KEEP C123 C124 KEY_COL(2) TR103 KEY_ROW(0) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 17 C323 L313 SERLE SERCLK SERDAT RTXIN RTXIP C347 C348 C341 R306 CLK13M_TR _CLR R307 C344 R309 CLK13M_MC C352 C346 L309 26M_OUT CLK13M_YMU U303 R311 C351 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 18 The voltage is "High" at ③ Check the UCP101 the C113,C115,C116 LCD display is O.K Check the LCD part Check the Audio part Sound is O.K SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 19 Flow Chart of Troubleshooting ③ ③ ① ③ ② SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 20 R215 R216 EAR_SWITCH KEY_ROW(3) AUDIO_SEL KEY_ROW(4) JACK_IN I2C_CLK PWR_KEEP I2C_DAT SIMRST FLASH_RESET DEBUG_DTR LED_EN CHG_OFF DEBUG_RXD UP_CS UP_SCLK CHG_DET UP_SDO SDS_TXD UP_SDI SDS_RXD SIMDATA SIMCLK SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 21: Sim Part

    SIM103 >= Check the UCP101 2.8V ? Is there any signals Check the UCP101 ③ pin#2,#3,#4 of SIM103 ? Check the SIM Card SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 22 Flow Chart of Troubleshooting ② ③ ① SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 23: Microphone Part

    O.K? Check the reference voltage on mic path Resolder or change ① R150,R148,C140,R152,R149,C144, VR118 ≒ 2.0V ? R147,R143,C139,R154,C145,C146 ② Is microphone ok? Check UCP101 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 24 Flow Chart of Troubleshooting ① ② ① 3-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 25 Flow Chart of Troubleshooting VCCA_2.9V R143 C139 R147 C140 R148 MICINP MIC100 MICOUTP C144 R149 R150 MICINN MICOUTN R152 C145 C146 R154 VR118 VR119 3-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 26: Speaker Part

    Check UCP106,C191,C192 of U106 ? ④ Is there any signals at the pin# 3 and pin# 9 of Check U104 UCP104 ? 3-12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 27 Flow Chart of Troubleshooting ③ ② ④ ③ ① ① ③ ① 3-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 28 1 V+ AUDIO_PA_SPK_N 2 NO1 COM2 AUDIO_PA_SPK_P SPK_N IN2 8 COM1 SPK_P AUDIO_SEL R140 4 IN1 AOUTAN R141 5 NC1 GND 6 AOUTAP R144 C137 3-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 29: Egsm Rx

    19,20 : OSC300 ⑦ 26MHz ? change or resolder Vp-p :380mV? U300 U300 pin 2,3,22,23 Vp-p resolder or change : 120mV ? ⑧ UCP101 CHECK!! 3-15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 30 Flow Chart of Troubleshooting ① ③ ② ③ ⑤ ④ ⑦ ⑧ ⑥ 3-16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 31: Dcs Rx

    19,20 : ⑦ change or resolder 26MHz ? Vp-p : 380mV? U300 U300 pin 2,3,22,23 Vp-p resolder or change : 120mV ? ⑧ UCP101 CHECK!! 3-17 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 32 Flow Chart of Troubleshooting ① ③ ② ③ ⑤ ④ ⑧ ⑥ ⑦ 3-18 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 33: Egsm Tx

    ⑤ 26MHz ? pinA13,C115 change or resolder Vp-p : 380mV? change or resolder U300 pin2,3,22,23 :100mV? UCP101 change or resolder U300 change or resolder 3-19 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 34 Flow Chart of Troubleshooting ③ ① ④ ② ⑥ ⑤ 3-20 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 35 ⑥ 26MHz ? pinA13,C115 change or resolder Vp-p : 380mV? change or resolder U300 pin2,3,22,23: 100mV? UCP101 change or resolder U300 change or resolder 3-21 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 36 Flow Chart of Troubleshooting ③ ① ④ ② ⑥ ⑤ 3-22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 37 C317 F301 C319 C320 PAM300 R303 3 OUT GSM_LNA_IN_N VRAMP VAPC L306 C322 VMOD_EN VMOD_EN GSM_LNA_IN_P C327 C328 C329 C330 GND GND BAND_SEL1 TX_EN 3-23 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 38: Array Course Control

    4. Array course control Test Jig (GH80-00865A) Test Cable (GH39-00743A) RF Test Cable (GH39-00397A) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 39: Software Downloading

    • Three binary files for downloading C250. – C250XXYY.s3 : Main source code binary. 4-2. Pre-requsite for Downloading • Downloader Program(OptiFlash.exe) • C250 Mobile Phone • Data Cable • Binary files SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 40: S/W Downloader Program

    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 41 OptiFlash will use to communicate with the phone. 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 42 C250XXYY.s3”, for the downloader binary setting. Make sure that not to change the reserved memory regions. In case of C140 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 43 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 44: Block Diagrams

    5. Block Diagrams This Document can not be used without Samsung's authorization...

  • Page 45: Pcb Diagrams

    6. PCB Diagrams SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 46 PCB Diagrams SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 47: Main Electrical Parts List

    GRP0335C1E270JD01E C226,C227,C228,C229 2203-005717 GRP0335C1E270JD01E C300,C306,C308,C319 2203-005719 GRP0335C1E390JD01E C304 2203-001385 GRP1555C1H1R5CZ01E C305 2203-006318 GRP0335C1E1R2CD01 C309,C313,C352 2203-006194 GRP033R70J103KA01E C310,C312 2203-005683 GRP0335C1E8R0DD01E C311,C317,C328 2203-005736 GRP0335C1E101JD01E C314 2203-006626 GRM155R61A334KE15D SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 48 AOT-TAWS-XXYY LED207,LED208,LED209 0601-001819 AOT-TAWS-XXYY LED210,LED211,LED212 0601-001819 AOT-TAWS-XXYY LED213,LED214,LED215 0601-001819 AOT-TAWS-XXYY LED216,LED217,LED220 0601-001819 AOT-TAWS-XXYY OSC200 2801-003856 MC-146(32.768KHz,20ppm) OSC300 2801-004587 TSX-3225(TN4-26412) PAM300 1201-002364 TQM6M4022E R100 2007-001284 RC1005J4R7CS SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 49 ERJ1GENJ201X R309,R311 2007-009084 MCR006YZPJ105 R312 2007-009154 RMC1/20-120JTP R313 2007-008786 RMC1/20K333JTP R317 2703-002205 CIH05T3N9KNC R318 2007-000174 MCR01MZP5J470 RFS300 3705-001358 KMS-512 SIM103 3709-001384 5000-6P-2.3M TA100,TA102 2404-001381 F981A106MMA SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 50 G-CSP2100B1-YV10 UCP201 GH09-00039A TR08WQTKE15IN3B UME200 NEWETC00001 LRS18CK VOL_DOWN,VOL_UP 3404-001152 LS10N2-T VR112,VR118,VR119 1405-001082 VC040205X150R ZD126,ZD129,ZD202 0406-001167 ESDA6V1-5P6 ZD128,ZD201 0406-001083 ESDA6V1W5 ZD114 0403-001547 TDZ5.6 ZD203 0406-001167 ESDA6V1-5P6 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 51: Reference Data

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

  • Page 52: 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 53: Esd(Electrostaically Sensitive Devices) Precaution

    ● 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 54: Product Function

    - Offline mode - Bluetooth - Web browser - Multimedia Message Service (MMS) - Name card - Voice recorder - Women's life - Organiser 10-1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 55 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. 2007. 02. Rev.1.0...

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