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Samsung SGH-C250 Service Manual Download Page 29

SAMSUNG Proprietary-Contents may change without notice

Flow Chart of Troubleshooting

3-15

This Document can not be used without Samsung's authorization

PAM300

CHECK

pin12

≥

-65dBm ?

3

-2.RF

3-2-1. EGSM RX

CONTINUOUS RX ON

RF INPUT : 62CH

AMP : -50dBm

NORMAL CONDITION

catch the channel?

CHECK

ANT

contact ?

U300

pin 17 : 2.8V ?

PAM300 CHECK

pin16

≥

-65dBm ?

U300

CHECK

pin29,30

≥

-65dBm ?

PAM300,RFS300

resolder or change

PAM300

resolder or change

C319,C322,L306

resolder or change

UCP101 pinA13,

C115

change or resolder

U300 CHECK

pin 19,20 :

26MHz ?

Vp-p :380mV?

OSC300

change or resolder

U300

resolder or change

UCP101

CHECK!!

U300

pin 2,3,22,23 Vp-p

: 120mV ?

NO

YES

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

①

③

②

④

⑤

⑥

⑦

⑧

F301 CHECK

pin3,4

≥

-65dBm ?

F301

resolder or change

YES

NO

Summary of Contents for SGH-C250

Page 1: ...EPHONE 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: ... 2 3 Disassembly 2 9 2 4 Assembly 2 11 3 Chart of Troubleshooting 3 1 Baseband 3 1 3 1 1 Power ON 3 1 3 1 2 System Initial 3 5 3 1 3 SIM Part 3 8 3 1 4 Charging Part 3 10 3 1 5 Microphone Part 3 12 3 1 6 Speaker Part 3 15 3 1 7 Camera Part 3 18 3 1 8 LCD 3 21 3 2 RF 3 13 3 2 1 EGSM Rx 3 23 3 2 2 DCS Rx 3 24 3 2 3 PCS Rx 3 25 3 2 4 EGSM Tx 3 27 3 2 4 DCS PCS Tx 3 28 3 2 6 BLUETOOTH 3 30 ...

Page 3: ... 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 Repair Precaution 9 1 9 2 ESD Electrostaically Sensitive Devices Precaution 9 2 10 Product Function ...

Page 4: ...range 0 124 975 1023 512 885 Tx Rx spacing 45 MHz 95 MHz Mod Bit rate Bit Period 270 833 kbps 3 692 us 270 833 kbps 3 692 us Time Slot Period Frame Period 576 9 us 4 615 ms 576 9 us 4 615 ms Modulation 0 3 GMSK 0 3 GMSK MS Power 33 dBm 5 dBm 30 dBm 0 dBm Power Class 5 pcl 19 pcl 0 pcl 15 pcl Sensitivity 102 dBm 100 dBm TDMA Mux 8 8 Cell Radius 35 Km 2 Km ...

Page 5: ...m 10 23 2 dBm 11 21 2 dBm 12 19 2 dBm 13 17 2 dBm 14 15 2 dBm 15 13 2 dBm 16 11 3 dBm 17 9 3 dBm 18 7 3 dBm 19 5 3 dBm TX Power control level DCS1800 0 30 3 dBm 1 28 3 dBm 2 26 3 dBm 3 24 3 dBm 4 22 3 dBm 5 20 3 dBm 6 18 3 dBm 7 16 3 dBm 8 14 3 dBm 9 12 4 dBm 10 10 4 dBm 11 8 4 dBm 12 6 4 dBm 13 4 4 dBm 14 2 5 dBm 15 0 5 dBm ...

Page 6: ...w and Parts List 2 1 This Document can not be used without Samsung s authorization 2 1 Cellular phone Exploded View QKP01 QFR01 QRF03 QVO01 QMP01 QBR01 QCR17 QME01 QAN02 QRE01 QMW02 QFL01 QHI01 QSP01 QLC01 QFU01 QMO01 QBA01 QCR05 QBA00 QCR12 QMI01 QME03 QSC01 QSC02 QAN05 ...

Page 7: ...CR17 SCREW MACHINE 6001 001460 QFU01 ASSY CASE FOLDER UPPER GH98 03152B QKP01 ASSY KEYPAD XEF AGA GH98 03726A QLC01 LCD MAIN MODULE SGHC170 GH07 01044A QME01 UNIT DOME SHEET SGHC250 F K GH59 03999A QME03 UNIT CON TO CON GH59 04016A QMI01 MICROPHONE ASSY GH30 00321A QMO01 MOTOR DC SGHZ130 GH31 00154D QMP01 PBA MAIN SGHC250 GH92 03287A QMW02 PMO COVER MAIN WINDOW GH72 36006A QRE01 ASSY CASE REAR GH9...

Page 8: ...BEL P WATER SOAK GH68 02026A LABEL P WATER SOAK GH68 02026A LABEL R MAIN EU GH68 13777A MANUAL USERS EU PORTUGUESE GH68 13787A MANUAL USERS EU ENGLISH GH68 13808A BOX P UNIT MAIN EU GH69 05022A PMO CASE FOLDER DUMMY GH72 36788A MPR VINYL BOHO WINDOW GH74 30029A 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 KE...

Page 9: ... from LCD Connector Be careful not to damage 2 Be careful not to damage LCD FPCB 1 Push the hinge between Folder Upper and lower And Disassemble Front from Folder caution 1 Be careful not to make scratch and molding damage 2 Be careful not to damage LCD FPCB 1 Unscrew the REAR at the four points 2 Uncover the EAR COVER caution 1 Be careful not to make scratch and molding damage 1 Disassemble the R...

Page 10: ...Detach the insulation tape 2 Disassemble the LCD FPCB connector 3 Disassemble the LCD PANNEL from PBA 4 Melt the lead of LCD FPCB and detach the LCD FPCB caution 1 Be careful not to damage the LCD FPCB and LCD PANNEL 1 Remove screw caps 2 Unscrew the FOLDER Upper caution 1 Be careful not to make scratch and molding damage 2 Be careful not to damage LCD FPCB 1 By using an assembly stick Disassemble...

Page 11: ...on 1 Be careful not to make scratch and molding damage 1 Attach the fixing tape of LCD FPCB 2 Solder the LCD FPCB 3 Attach the insulation tape 4 Detach the cover of adhesive tape 5 Attach the LCD PANNEL to pba caution 1 Arrange the lcd fpcb exactly 1 Be careful not to make scratch and molding damage 2 Be careful when soldering the FPCB 3 DO not overheat the FPCB 1 Soldering the motor and speaker 2...

Page 12: ...l not to make scratch and molding damage 1 Insert the KEYPAD 2 Attach side volume key 2 Insert PBA into FRONT 3 Connect LCD FPCB to PBA CONNECTOR caution 1 Be careful not to insert keypad into FRONT incorrectly Put KEYPAD Holes into FRONT Projection correctly 2 Do not miss side key 1 Screw up the FOLDER UPPER at the above two points M1 4 L2 5 caution 1 Be careful not to make scratch and molding da...

Page 13: ...Red Line as the above picture is shown 2 Connect LCD FPCB to PBA CONNECTOR 3 Cover the ear cover caution 1 Be careful not to make scratch and molding damage 1 Assemble rear with front following the orders as below picture is shown 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 Rubber Attachment Standard Line 1 2 3 ...

Page 14: ...SAMSUNG Proprietary Contents may change without notice Exploded View and Parts List 2 9 This Document can not be used without Samsung s authorization ...

Page 15: ... 8V Check UCP101 and C116 Pin A13 and pin A14 2 8V Check UCP101 and C117 Freq 26MHz Vpp 400mV Vpp 600mV Check the clock generation circuit related to OSC300 Check the initial operation END No Yes Yes Yes Yes Yes Yes No No No No pin G11 1 8V No Yes Check the current consumption Check the Vbat Voltage Check the pin of UCP101 Check the clock signal at pin 21 of U300 Current consumption 100mA Check th...

Page 16: ... M P N I C I M 4 1 N N T U O C I M 7 1 S D N G 0 1 K 2 S D N G 8 F 3 S D N G 9 F 4 S D N G 0 1 F 5 S D N G 7 G 6 S D N G 8 G 7 S D N G 9 G 8 S D N G 0 1 G 9 S D N G 6 H 3 1 P V D N G R U C H _ D N G 1 1 F 6 F D D N G 0 1 M Q D N G 8 E 1 S D N G 7 F 0 1 S D N G 7 H 1 1 S D N G 8 H 2 1 S D N G 9 H 3 1 S D N G 7 J 4 1 S D N G 8 J 5 1 S D N G 9 J 6 1 S D N G 0 1 J DB15 D2 DB2 K3 J5 DB3 DB4 J6 DB5 H5 G...

Page 17: ...A D S 7 N E S 1 1 TXOP_HI 0 1 TXOP_LO C F A V 0 2 N I F E R 9 1 B N I F E R P O _ F E R 1 2 RX1800 7 2 8 2 RX1800B RX1900 5 2 6 2 RX1900B RX850 2 3 3 3 GND I 2 B I 3 C N 8 C N 4 3 5 3 C N 3 2 Q 2 2 B Q U300 GND1 2 4 GND2 1 HOT HOT 3 OSC300 VRF_2 9V C318 C308 C300 C307 L313 C324 C362 C321 C313 VBAT C301 AFC SERCLK SERDAT SERLE RTXQN RTXQP RTXIN RTXIP 26M_OUT DCS_LNA_IN_N DCS_LNA_IN_P GSM_LNA_IN_N G...

Page 18: ...J12 of UCP101 2 8V Check the UCP101 if it has some problem it is to be replaced Yes No Is the pin K9 of UCP101 Low High Yes No Check the UCP101 if it has some problem it is to be replaced There is 32 768kHz wave forms at the C218 and C219 Yes No Check the UCP201 The voltage is High at the C113 C115 C116 Check the UCP101 LCD display is O K No Yes Yes Check the LCD part No Sound is O K Yes No Check ...

Page 19: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting 3 5 This Document can not be used without Samsung s authorization ...

Page 20: ...CP_A21 L16 XCP_A3 M12 XCPTSTSTOP_CKO XCP_A0_BEON B13 XCP_A1 F11 D16 XCP_A10 F14 XCP_A11 G14 XCP_A12 XCP_A13 G13 G17 XCP_A14 XCP_A15 L L P D _ S S V A7 X1RTC X2RTC D10 XAG0 B11 A11 XAG1 E11 XAG2 XAG3 D11 B7 XBSWN S S V 9 G S S V S S V 0 1 G 7 H S S V 1 1 H S S V S S V 7 J S S V 6 K A S S V 0 1 E 5 1 E 7 K S S V 6 L S S V S S V 0 1 L 7 M S S V S S V 8 L S S V 1 1 J 9 L S S V S S V 3 A 6 F E D D V 6 ...

Page 21: ...out Samsung s authorization 3 1 3 Sim Part Check the voltage at pin 1 of SIM103 2 8V Insert SIM is displayed on the LCD Check the SIM connector s SIM103 connection to SIM card Check the UCP101 Resolder or change SIM103 END No Yes Yes Yes Yes No No Is there any signals pin 2 3 4 of SIM103 Check the UCP101 Check the SIM Card ...

Page 22: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting 3 8 This Document can not be used without Samsung s authorization ...

Page 23: ...msung s authorization 3 1 4 Microphone Part Is the assembled status of microphone O K Microphone does not work Reassembled the microphone Resolder or change R150 R148 C140 R152 R149 C144 R147 R143 C139 R154 C145 C146 END No Yes Yes Yes Yes No Is microphone ok No Check UCP101 Check the reference voltage on mic path VR118 2 0V Yes ...

Page 24: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting 3 10 This Document can not be used without Samsung s authorization ...

Page 25: ...hange without notice Flow Chart of Troubleshooting 3 11 This Document can not be used without Samsung s authorization C140 C139 VR118 MIC100 VR119 R148 C145 R149 R143 R152 R150 R154 R147 C144 C146 VCCA_2 9V MICOUTP MICINP MICINN MICOUTN ...

Page 26: ... O K No Replace the Receiver Yes No Yes Check UCP101 R140 141 Is there any signals at the pin P11 and pin N12 of UCP101 END Yes Is there any signals at the pin 3 and pin 9 of UCP104 Check U104 No Yes There is no sound from the Speaker Is the terminal of Speaker O K Replace the Speaker Is there any signals at the pin 17 and pin 18 of U106 END Yes Yes Yes No No Check UCP106 C191 C192 Is there any si...

Page 27: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting 3 13 This Document can not be used without Samsung s authorization ...

Page 28: ...6 SYNC 30 7 D D V 34 G G 35 G 36 HPOUT L MONO 10 11 HPOUT R L E S F I 5 6 C L L P 31 SCLK 6 D 7 D 20 EQ1 12 13 EQ2 EQ3 14 2 1 T X E 2 T X E 19 G 33 U106 1 I K L C D0 27 26 D1 2 D 25 3 D 24 23 4 D 5 D 22 21 VBAT N _ K P S _ A P _ O I D U A P _ K P S _ A P _ O I D U A 4 D 3 D D 1 D 0 CP_WEN CP_OEN A 0 YMU_EN N E _ B I V CLK13M_YMU 2 D YMU_IRQ MEM_RST 5 D 6 D 7 D R140 C137 R144 NO2 1 V 9 GND 6 GND 11...

Page 29: ...the channel CHECK ANT contact U300 pin 17 2 8V PAM300 CHECK pin16 65dBm U300 CHECK pin29 30 65dBm PAM300 RFS300 resolder or change PAM300 resolder or change C319 C322 L306 resolder or change UCP101 pinA13 C115 change or resolder U300 CHECK pin 19 20 26MHz Vp p 380mV OSC300 change or resolder U300 resolder or change UCP101 CHECK U300 pin 2 3 22 23 Vp p 120mV NO YES NO NO NO NO NO NO YES YES YES YES...

Page 30: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting 3 16 This Document can not be used without Samsung s authorization ...

Page 31: ... the channel CHECK ANT contact U300 pin 17 2 8V PAM300 CHECK pin20 65dBm U300 CHECK pin27 28 65dBm PAM300 RFS300 resolder or change PAM300 resolder or change C310 C312 L304 resolder or change UCP101 pinA13 C115 change or resolder U102 CHECK pin 19 20 26MHz Vp p 380mV OSC300 change or resolder U300 resolder or change UCP101 CHECK U300 pin 2 3 22 23 Vp p 120mV NO YES NO NO NO NO NO YES YES YES YES Y...

Page 32: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting 3 18 This Document can not be used without Samsung s authorization ...

Page 33: ...YES NO BATTERY check change PAM300 pin 8 1 6V YES NO PAM300 pin11 about 5dBm YES PAM300 pin 4 2 9V YES YES PAM300 change or resolder NO UCP101 check R303 Check NO U300 pin17 2 8V UCP101 pinA13 C115 change or resolder YES U300 pin19 20 26MHz Vp p 380mV U300 pin2 3 22 23 100mV YES UCP101 change or resolder NO NO U300 change or resolder YES NO OSC300 change or resolder CONTINOUS TX ON CONDITION TX PO...

Page 34: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting 3 20 This Document can not be used without Samsung s authorization ...

Page 35: ...0dB PAM300 pin12 about 2 3 dBm C302 RFS300 check change PAM300 pin6 2 8 V UCP101 check change PAM300 pin7 3 7 V NO NO YES YES NO BATTERY check change PAM300 pin 8 1 6V YES NO PAM300 pin1 about 5dBm YES PAM300 pin 4 0V YES YES PAM300 change or resolder NO UCP101 check R303 Check NO U300 pin 17 2 8V UCP101 pinA13 C115 change or resolder YES U300 pin19 20 26MHz Vp p 380mV U300 pin2 3 22 23 100mV YES ...

Page 36: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting 3 22 This Document can not be used without Samsung s authorization ...

Page 37: ...RX1 RX2 16 V1 2 7 VBATT VBS 4 VCC1 12 1 DCSIN 5 GND GND 13 15 GND 17 GND 19 GND 21 GND 11 PAM300 ANT L301 C302 L300 C315 VBAT TA316 OUT OUT 4 C328 F300 2 G G 5 IN 1 3 L306 L303 C330 C309 R300 2 3 C 1 G 4 G RFS300 A OUT 4 F301 2 G 5 G 1 IN 3 OUT 1 1 2 2 3 3 4 4 ANT102 C312 C305 C319 C322 C310 L304 C320 R303 R317 C311 C329 C327 L302 C317 VAPC ANT DPCS_PAM_IN GSM_LNA_IN_N GSM_LNA_IN_P DCS_LNA_IN_P DC...

Page 38: ...G Proprietary Contents may change without notice 4 Array course control 4 1 This Document can not be used without Samsung s authorization Test Jig GH80 00865A RF Test Cable GH39 00397A Test Cable GH39 00743A ...

Page 39: ...cument can not be used without Samsung s authorization Software Downloading 4 1 Downloading Binary Files 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 ...

Page 40: ...ithout Samsung s authorization 4 3 S W Downloader Program 1 Load the binary download program by executing the OptiFlash exe 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 ...

Page 41: ...ation 3 Select the COM port when the download cable is connected Up to twelve ports are supported Additionally you can select the maximum transfer speed 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 ...

Page 42: ...ed without Samsung s authorization 4 Select the Flash Verify Browse Set the directory path and choose the latest s w binary for example 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 ...

Page 43: ...ng Flash button push the button and END at the same time Then press Flash Downloader will upload the binary file as below for the downloading 6 When downloading is finished successfully there is a All is well message 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 ...

Page 44: ...5 Block Diagrams 5 1 This Document can not be used without Samsung s authorization ...

Page 45: ...SAMSUNG Proprietary Contents may change without notice 6 PCB Diagrams 6 1 This Document can not be used without Samsung s authorization ...

Page 46: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 6 2 This Document can not be used without Samsung s authorization ...

Page 47: ...M06AT C141 C191 C192 C346 2203 000438 GRP155R71H102K C142 C190 2203 006838 CL05A225KQ5NSNC C145 C146 2203 000359 GRP1555C1H151JD01E C163 2203 006377 GRM21BR61E475KA12L C170 C171 C302 C321 2203 006556 GRM0335C1E470JD01D C172 C173 C217 2203 006896 GRM033R71E121KA01D C174 C175 C176 C180 2203 006648 GRM033R60J223KE01D C181 2203 006693 GRM033R71E271K C194 C195 C323 2203 006260 GRM155R61A224KE19E C196 C...

Page 48: ...C010CA3GNNC CN100 3722 002433 DCJ 11 5D S H3 2 CN301 3711 005296 14 5602 024 000 829 EAR100 3722 002010 0 1674432 1 F300 2904 001599 SF14 1842M5UBXX 04 F301 2904 001592 SF14 0942M5UBXX 03 L101 2703 001231 LK1608 100K T L102 L103 L104 3301 001729 BLM15AG102SN1D L200 3301 001342 ACZ1005M 152 T L300 L301 2703 002917 LQP03TN2N2B04D L302 L313 2703 002267 CIH05T4N7SNC L303 2703 002313 CIH05TR10JNC L304 ...

Page 49: ...07 008137 RC1005F243CS R162 R303 2007 008516 ERJ1GEJ103C R165 2007 008419 ERJ1GEJ102C R174 2007 009108 RC0603J154CS R175 R176 2007 009166 RK73H1HTTB3322F R201 2007 009315 RC0603J4R7CS R205 R209 2007 007573 RK73H1ETP3303F R206 2007 007981 ERJ2RKF1803X R210 2007 007590 RK73H1ETP8202F R211 R212 2007 008052 ERJ1GENJ472X R213 R214 R219 R220 2007 001301 MCR01MZP5J680 R215 R216 2007 000165 RC1005J204CS R...

Page 50: ...ISL8484IRZ U105 1203 003663 ISL6294IRZ T U106 1204 001811 YMU759 QE2 U109 0801 002529 TC7SH32FU TE85L U203 1009 001020 EM 1681 FT U300 1205 003098 AD6548XCPZ U302 1204 002688 TEA5760UK U303 0801 003013 NC7SV74L8X UCP101 1203 003897 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 ZD...

Page 51: ...SK Binary Phase Shift Keying CA Conditional Access CDM Code Division Multiplexing C I Carrier to Interference DMB Digital Multimedia Broadcasting EN European Standard ES Elementary Stream ETSI European Telecommunications Standards Institute MPEG Moving Picture Experts Group PN Pseudo random Noise PS Pilot Symbol QPSK Quadrature Phase Shift Keying RS Reed Solomon SI Service Information TDM Time Div...

Page 52: ...orn away Use a thicken twisted wire when you measure level A thicken twisted wire has low resistance therefore error of measurement is few Repair after separate Test Pack and Set because for short danger for example an overcurrent and furious flames of parts etc when you repair board in condition of connecting Test Pack and tuning on Take specially care of soldering because Land of PCB is small an...

Page 53: ...ined your body before you touch semiconductor or parts with semiconductor There are ways that you touch an earthed place or wear static electricity prevention string on wrist Use earthed soldering steel when you connect or disconnect ESD Use soldering removing tool to break static electricity otherwise ESD will be damaged by static electricity Don t unpack until you set up ESD on product Because m...

Page 54: ...e 10 Product Function 10 1 This Document can not be used without Samsung s authorization Main Function Cmera and camcorder Music player Java Offline mode Bluetooth Web browser Multimedia Message Service MMS Name card Voice recorder Women s life Organiser ...

Page 55: ...is Service Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable International and or domestic law Samsung Electronics Co Ltd 2007 02 Rev 1 0 ⓒ ...

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