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Samsung SGH-X550 Скачать руководство пользователя страница 48

SAMSUNG Proprietary-Contents may change without notice

Flow Chart of Troubleshooting

This Document can not be used without Samsung's authorization

9-15

9-9. Back Light (for Color Main LCD)

Is LCD Contrast set on high

level in the Menu?

Set LCD Contrast on high level

END

No

Yes

Yes

Backlight does not work

U2(LCD MODULE) PIN 2 =

H ?

Check the inserting condition of CON TO CON

Resolder

UCP300

or change PBA

No

Yes

U2 PIN 8 = 3.6V ?

Check the U1 & the related circuit

No

Yes

Yes

Replace the LCD Module

Содержание SGH-X550

Страница 1: ...Precautions 2 Specification 3 Operation Instruction and Installation 4 Array course control 5 Exploded View Disassembly and Assembly Instructions 6 MAIN Electrical Parts List 7 Block Diagrams 8 PCB Diagrams 9 Flow Chart of Troubleshooting 10 Reference data ...

Страница 2: ...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...

Страница 3: ...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...

Страница 4: ...spacing 45MHz 45MHz 95MHz 80MHz Mod Bit rate Bit Period 270 833kbps 3 692us 270 833kbps 3 692us 270 833kbps 3 692us 270 833kbps 3 692us Time Slot Period Frame Period 576 9us 4 615ms 576 9us 4 615ms 576 9us 4 615ms 576 9us 4 615ms Modulation 0 3GMSK 0 3GMSK 0 3GMSK 0 3GMSK MS Power 33dBm 5dBm 33dBm 5dBm 30dBm 0dBm 30dBm 0dBm Power Class 5pcl 19pcl 5pcl 19pcl 0pcl 15pcl 0pcl 15pcl Sensitivity 102dBm...

Страница 5: ...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 4dBm 12 6 4 dBm 13 4 4 dBm 14 2 5 dBm 15 0 5 dBm TX Power control level PCS1800 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 4dBm 12 6 4 dBm 13 4...

Страница 6: ...Operation Instruction and Installation 3 1 This Document can not be used without Samsung s authorization Main Function SMS EMS MMS Message Service WAP2 0 Speaker phone TFT 1 9 Main Display Dual Display VGA Camera Folder 16 Poly Melody E mail client Bluetooth ...

Страница 7: ...SAMSUNG Proprietary Contents may change without notice Operation Instruction and Installation 3 2 This Document can not be used without Samsung s authorization ...

Страница 8: ... without notice 4 Array course control 4 1 This Document can not be used without Samsung s authorization 4 1 Software Adjustments Serial Cable CSA LL64151 A Power Cable USB DATA CABLE CSA LL11105 AWM JIG BOX GH80 01909A JIG CABLE GH39 00217A ...

Страница 9: ...rogram S_Benz Downloader_V2 0 exe X550 Mobile Phone Data Cable Binary file TFS file 4 2 2 S W Downloader Program Load the binary download program by executing the S_Benz Downloader_V2 0 exe 1 Select the connected serial port and the rate of speed 2 Select the check box the mode you want to download if the binary file wanted check only BIN if the tfs file wanted check only TFS if all the files want...

Страница 10: ...SAMSUNG Proprietary Contents may change without notice Array course control 4 3 This Document can not be used without Samsung s authorization 3 Select the file s what you want to download ...

Страница 11: ...SAMSUNG Proprietary Contents may change without notice Array course control 4 4 This Document can not be used without Samsung s authorization ...

Страница 12: ...e used without Samsung s authorization 5 Exploded View Disassembly Assembly Instructions 5 1 Cellular phone Exploded View QFU01 QLC01 QCA01 QFL01 QVK01 QAN05 QCR05 QAN02 QVO01 QCR05 QSC01 QME16 QFR01 QKP01 QME01 QMP01 QMI01 QRE01 QBA00 QBA01 QCR31 QSP01 QMO01 QIF01 QHI01 QRF03 QMW01 ...

Страница 13: ...INE 6001 001795 QFU01 ASSY CASE FOLDER UPPER XEC GH98 04939A QKP01 ASSY KEYPAD XET RED GH98 02693B QME01 UNIT METAL DOME GH59 03832A QME16 UNIT CON TO CON ASSY GH59 03813A QMI01 MICROPHONE ASSY GH30 00321A QMO01 MOTOR DC SGHX550 GH31 00348A QMP01 PBA MAIN SGHX550 GH92 03766A QRE01 ASSY CASE REAR COVER GH98 02691B QSC01 RMO RUBBER SCREW CAP GH73 08379B QSP01 SPEAKER 3001 002137 QVK01 UNIT VOLUME KE...

Страница 14: ... GH68 14831A MANUAL USERS XEC SPANISH GH68 15419A BOX UNIT XEC GH69 05416B CUSHION PLUP CASE XEC GH69 05602A MPR REMOVE TAPE LCD GH74 13804A MPR TAPE LCD CONN COVER GH74 14057A MPR TAPE LED GH74 17926A MPR INSU TAPE GH74 18595A MPR VINYL BOHO MAIN WINDOW GH74 22341A MPR INSU TAPE SUB LCD GH74 27510A MPR INSU TAPE GH74 27512A MPR TAPE GH74 29296A MPR TAPE MAIN FPCB GH74 30860A TAPE GASK GH74 32900A...

Страница 15: ...e lower end locker first 1 Be careful not to damage F PCBs Volume key LCD MIC 1 Be careful not to make scratch and damage to the LCD F PCB 5 3 Disassembly and Assembly Instructions 5 3 1 Disassembly 1 Unscrew the REAR at the 4 points 1 1 Disassemble the REAR from the LOWER using a diassembly stic 2 3 1 Detach the volume key F PCB LCD CONNECTOR and MIC from the FRONT ASS Y 2 Disassemble the PBA fro...

Страница 16: ...ing damage 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage 2 Be careful not to damage F PCBs and Wire 1 Disassemble the MOTOR SPEAKER CAMERA from the FOLDER LOWER by using a pincette 5 6 7 8 1 Remove screw rubber caps and unscrew the FOLDER UPPER at the 2 point 1 Push the hinge between FOLDER UPPER and FOLEDR LOWER and disassemble the FRONT f...

Страница 17: ...thorization 1 Be careful not to make scratch and molding damage 2 Be careful not to damage F PCBs 1 Be careful not to make scratch and molding damage 2 Be careful not to damage the LCD module 9 10 1 Detatch insulation tapes of the connectors 2 Disassemble the LCD F PCB and CAMERA module from the LCD module 1 Disassemble the LCD module from the FOLDER LOWER ...

Страница 18: ...PCB 1 Be careful not to make scratch and molding damage 2 Arrange Wires clearly as above picture is shown 1 Be careful not to make scratch and molding damage 2 Be careful not to damage the CAMERA F PCB 5 3 2 Assembly 1 3 1 Insert the LCD CAMERA F PCB to LCD module 2 Attach the insulation tape on the connectors 1 Insert the SPEAKER into FOLDER LOWER 2 Twist MOTOR wire third times and insert into th...

Страница 19: ...h and molding damage 2 Be careful not to damage LCD F PCB 1 Be careful not to make scratch and molding damage 5 1 Assemble FOLDER UPPER with FOLDER LOWER from the upper end to the lower end 1 Screw up the FOLDER LOWER at two point 2 Attach screw rubber caps on the screws by using a pincette 6 7 8 1 Insert LCD FPCB which is connected to folder into the bottom of FRONT HINGE 2 The folder HINGE sould...

Страница 20: ...CON 1 Be careful not to make scratch and molding damage 2 Be careful not to damage LOCKER 1 Be careful not to make scratch and molding damage 2 Be careful not to damage LOCKER 3 Use 1 3 0 1 Kgf Cm 9 1 Insert the KEYPAD into FRONT 10 11 12 1 Put the PBA on the FRONT ASS Y 2 Joint CON to CON FPCB with the PBA 3 Attach the Volume key F PCB to the FRONT 4 Put the MIC on the FRONT MIC HOLE 1 Locate VOL...

Страница 21: ...SAMSUNG Proprietary Contents may change without notice Exploded View Disassembly Assembly Instructions 5 10 This Document can not be used without Samsung s authorization ...

Страница 22: ...3 005446 SA C115 C CER CHIP 2203 005446 SA C116 C CER CHIP 2203 005446 SA C117 C CER CHIP 2203 005446 SA C118 C CER CHIP 2203 001153 SA C119 C CER CHIP 2203 000233 SA C120 C CER CHIP 2203 000278 SA C121 C CER CHIP 2203 000854 SA C122 C CER CHIP 2203 000254 SA C123 C CER CHIP 2203 000854 SA C124 C CER CHIP 2203 000679 SA C125 C CER CHIP 2203 005234 SA C126 C CER CHIP 2203 000995 SA C127 C CER CHIP ...

Страница 23: ...ER CHIP 2203 006423 SA C402 C CER CHIP 2203 000643 SA C403 C CER CHIP 2203 006423 SA C404 C CER CHIP 2203 006423 SA C405 C CER CHIP 2203 000233 SA C406 C CER CHIP 2203 006562 SA C407 C CER CHIP 2203 006562 SA C408 C CER CHIP 2203 006562 SA C410 C CER CHIP 2203 006423 SA C411 C CER CHIP 2203 000254 SA C502 C CER CHIP 2203 000627 SNA C506 C CER CHIP 2203 000233 SA C507 C CER CHIP 2203 006257 SA C508...

Страница 24: ... C CER CHIP 2203 000386 SA C720 C CER CHIP 2203 000386 SA C721 C CER CHIP 2203 000278 SA C722 C CER CHIP 2203 006562 SA C723 C CER CHIP 2203 006137 SA C724 C CER CHIP 2203 000278 SA C725 C CER CHIP 2203 005480 SA C726 C CER CHIP 2203 006260 SA C727 C CER CHIP 2203 006562 SA C728 C CER CHIP 2203 006137 SA C729 C CER CHIP 2203 005480 SA C800 C CER CHIP 2203 006423 SA C801 C CER CHIP 2203 006423 SA C...

Страница 25: ...INDUCTOR SMD 2703 001724 SA L108 INDUCTOR SMD 2703 001786 SA L109 INDUCTOR SMD 2703 001724 SA L110 INDUCTOR SMD 2703 002203 SA L111 INDUCTOR SMD 2703 002199 SA L112 INDUCTOR SMD 2703 002309 SA L113 INDUCTOR SMD 2703 002314 SA L114 INDUCTOR SMD 2703 002309 SA L115 INDUCTOR SMD 2703 002203 SA L116 INDUCTOR SMD 2703 002314 SA L117 INDUCTOR SMD 2703 002268 SA L118 INDUCTOR SMD 2703 002206 SA L119 INDU...

Страница 26: ...HIP 2007 007001 SA R308 R CHIP 2007 007107 SA R309 R CHIP 2007 007142 SA R310 R CHIP 2007 007142 SA R311 R CHIP 2007 007107 SA R312 R CHIP 2007 008055 SA R314 R CHIP 2007 008542 SA R315 R CHIP 2007 008588 SA R316 R CHIP 2007 008588 SA R317 R CHIP 2007 008542 SA R318 R CHIP 2007 008483 SA R319 R CHIP 2007 000157 SA R320 R CHIP 2007 008052 SA R403 R CHIP 2007 008055 SA R404 R CHIP 2007 008055 SA R40...

Страница 27: ...P 2007 000171 SA R710 R CHIP 2007 000140 SA R713 R CHIP 2007 000140 SA R714 R CHIP 2007 007590 SA R715 R CHIP 2007 007590 SA R716 R CHIP 2007 001319 SA R717 R CHIP 2007 000171 SA R719 R CHIP 2007 001319 SA R720 R CHIP 2007 000140 SA R721 R CHIP 2007 000140 SA R723 R CHIP 2007 000148 SA R724 R CHIP 2007 001290 SA R725 R CHIP 2007 001290 SA R726 R CHIP 2007 001284 SA R727 R CHIP 2007 001284 SA R738 ...

Страница 28: ... 003663 SA U700 IC POSI FIXED REG 1203 003737 SA U701 IC VOLTAGE COMP 1202 001068 SA U707 IC AUDIO AMP 1201 002494 SA U709 IC ANALOG MULTIPLEX 1001 001349 SA U973 INDUCTOR SMD 2703 002204 SA UCP300 IC COMM CONTROLLER 1205 003065 SA UME400 IC MCP 1108 000059 SA V500 VARISTOR 1405 001082 SA V800 VARISTOR 1405 001183 SA V801 VARISTOR 1405 001183 SA V802 VARISTOR 1405 001183 SA V803 VARISTOR 1405 0011...

Страница 29: ...SAMSUNG Proprietary Contents may change without notice Main Electrical Parts List 6 8 This Document can not be used without Samsung s authorization ...

Страница 30: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization 7 Block Diagrams 7 1 7 1 RF Solution Block Diagram MV3015 ...

Страница 31: ... standard NOR FLASH 128M VDD1 VDD2 VDD3 AVDD VCC_SYN MIC_BIAS VDD_RX_TX SIM CARD MOTOR ISL6294 CHARGE IC SCL SDA IT_PMU REF_ON 32K DAUL LDO LDO SDRAM 64M H A 0 7 H D 0 7 MV3015SAQ CAMERA VGA CAMERA MAIN LCD TFT 1 9 SUB LCD 4 Gray 1 0 ANL S W STG3699 B T BC313141 AMP TAP6201 SPK MIC DCL EAR_P EAR_N DU DD RCV_P RCV_N SPK_P SPK_N EAR_MIC_P EAR_MIC_N HD 0 7 Y 0 7 LD 0 7 LCD_CS_S P _ C L K M _ C L K LC...

Страница 32: ...SAMSUNG Proprietary Contents may change without notice 8 PCB Diagrams 8 1 This Document can not be used without Samsung s authorization Top ...

Страница 33: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 8 2 This Document can not be used without Samsung s authorization Bottom ...

Страница 34: ...ion Yes No Check the clock generation circuit related to U100 Check for the clock at C110 13MHz Yes No Check the VDD1 Core voltage circuit C512 VDD1 1 8V Yes No Check the related circuit C521 VDD2 C522 VDD3 H Yes No Resolder X500 Check the Clock at R502 32KHZ Yes No Check the PMU related to VINT C507 VINT 2 7V Yes No Change the Battery Power On does not work Check the Battery Voltage is more than ...

Страница 35: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 2 ...

Страница 36: ...ithout notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 3 9 2 Initial R301 RSTON H Initial Failure Check the circuit related to reset END No Yes Yes Check the 16bit data signal memory CE Yes ...

Страница 37: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 4 ...

Страница 38: ...sed without Samsung s authorization 9 5 9 3 Charging Part Check the U608 pin 8 4 2V U608 pin 4 L Check the U608 pin 1 4 9V Yes Resolder or replace U608 Resolder or replace U608 Check the circuit related to V_EXT_CHARGE Yes No Yes No Yes No END Abnormal charging part Yes Yes No Yes Yes END Abnormal charging part ...

Страница 39: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 6 ...

Страница 40: ...d without Samsung s authorization 9 7 9 4 Sim Part SIM500 pin 1 5 H Phone can t access SIM Card Check the sim charge pump Check the SIM Card END No Yes Yes Yes No Check the Clock After Power ON Check SIMCLK Signal on pin3 of SIM500 in a few second Yes No Replace PBA After SIM card insert SIM500 pin 2 H SIM_RST Yes ...

Страница 41: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 8 ...

Страница 42: ...ithout Samsung s authorization 9 9 9 5 Microphone Part Check the connection from MIC Check the voltage of MIC BIAS 2 15V Resolder MIC Replace PM IC or PBA No Yes Yes Yes No No END Yes Check the MIC No Replace the MIC Microphone does not work Resolder the Surrounding capacitors Check the circuit from EAR700 to MIC Yes ...

Страница 43: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 10 ...

Страница 44: ...thout notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 11 9 6 Speaker Part Melody U707 PIN 1 H Speaker does not work No Yes Replace UCP300 Yes END Is Speaker working Change the Speaker No Yes ...

Страница 45: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 12 ...

Страница 46: ...ing This Document can not be used without Samsung s authorization 9 13 9 7 Key Data Input When one of the keys is pushed is it displayed on LCD Check the Dome sheet Key Pad END No Yes Yes Check Initial Operation When one of the keys is pushed KBIO signal is OK Replace the PBA No Yes ...

Страница 47: ...ce This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 14 9 8 Receiver Part Is Receiver working Resolder UCP300 or change PBA END No Yes Yes Receiver does not work No Replace the Receiver Yes Is Receiver working ...

Страница 48: ...tion 9 15 9 9 Back Light for Color Main LCD Is LCD Contrast set on high level in the Menu Set LCD Contrast on high level END No Yes Yes Backlight does not work U2 LCD MODULE PIN 2 H Check the inserting condition of CON TO CON Resolder UCP300 or change PBA No Yes U2 PIN 8 3 6V Check the U1 the related circuit No Yes Yes Replace the LCD Module ...

Страница 49: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 16 ...

Страница 50: ...y change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 17 9 10 Key Back Light U700 pin8 H Check the UCP300 related to KEY_LED_ON END No Yes Yes Main Key LED does not work ...

Страница 51: ...ut Samsung s authorization Flow Chart of Troubleshooting 9 18 9 11 Camera part Camera function does not work Yes No Reconnect the camera module Check the Camera connector on LCD module Yes C406 26MHz No Check U100related to 26Mhz Yes Is there another problem END Replace the camera module Yes ...

Страница 52: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 19 ...

Страница 53: ...62CH center freq 942MHz Amp 50dBm Yes DUF200 Pin8 65dBm No Resolder RFS200 C203 L201 Yes Check ANT Switch control circuit DUF200 5 6 68dBm Check DUF200 pin10 pin12 L No No Yes Yes Resolder DUF200 No Resolder L101 L102 L103 U101 pin 29 70dBm pin 30 70dBm Yes No U101 pin 10 15 2 8V U101 pin 6 7 8 9 1V No Check Resolder U101 OSC100 RF26MHz RF PSU Part Yes Yes Resolder U101 Check U500 END ...

Страница 54: ...Yes Yes Yes Yes Yes Yes Yes Yes Check Resolder RFOL signal RF13MHz RF PSU Part Check VBAT or PAM control signal Resolder or Change F200 Check F200 OK Yes U101 pin 6 7 8 9 1V Resolder L111 C115 C116 Resolder or Change PAM100 Check ANT Switch control circuit Change or Resolder C206 C208 C209 PAM100 pin4 11dBm U101 pin 38 39 15dB PAM100 pin11 18dBm DUF200 pin11 18dBm Check DUF200 pin10 H 2 6V 12 L TX...

Страница 55: ...0 pin12 L Check U500 No No No No No Yes Yes Yes Yes Yes Yes Resolder U101 Check Resolder U100 OSC100 RF26MHz RF PSU Part U101 pin 10 15 2 8V Resolder L107 L108 L109 Resolder DUF200 Check ANT Switch control circuit U101 pin 35 70dBm pin 36 70dBm U101 pin 6 7 8 9 1V DUF200 1 2 68dBm RX ON RF input 698CH center freq 1842 4MHz Amp 50dBm Yes No END Resolder RFS200 C203 L201 DUF200 Pin8 65dBm ...

Страница 56: ...o Yes Yes Yes Yes Yes Yes Yes Yes Check Resolder RFOH signal RF13MHz RF PSU Part Check VBAT or PAM control signal Resolder or Change F200 Check F200 OK Yes U101 pin 6 7 8 9 1V Resolder C127 C128 L119 Resolder or Change PAM100 Check ANT Switch control circuit Change or Resolder L205 C213 C214 PAM100 pin3 11dBm U101 pin 1 2 15dB PAM100 pin15 18dBm DUF200 pin13 18dBm Check F100 pin12 H 2 6V 10 L TX O...

Страница 57: ... 660CH center freq 1959 8MHz Amp 50dBm Yes DUF200 Pin8 65dBm No Resolder RFS200 C203 L201 Yes DUF200 3 4 68dBm Check DUF200 pin10 pin12 L No No Check ANT Switch control circuit Yes Yes Resolder DUF200 U101 pin 32 70dBm pin 33 70dBm No Resolder L104 L106 Yes U101 pin 10 15 2 8V 101 pin 6 7 8 9 1V No No Check Resolder U100 OSC100 RF26MHz RF PSU Part Yes Yes Resolder U101 Check U500 END ...

Страница 58: ...13 18dBm Check F100 pin12 H 2 6V 10 L No No Check ANT Switch control circuit Yes Change or Resolder L205 C213 C214 Yes PAM100 pin15 18dBm No Resolder or Change PAM100 Yes Check F200 OK PAM100 pin3 11dBm No No Resolder or Change F200 Check VBAT or PAM control signal Yes Yes No U101 pin1 2 15dBm Resolder C127 C128 L119 Yes U101 pin 10 15 2 8V U101 pin 6 7 8 9 1V No No Check Resolder RFOH signal RF13...

Страница 59: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 26 ...

Страница 60: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 27 ...

Страница 61: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 28 ...

Страница 62: ...K 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 Divi...

Страница 63: ...SAMSUNG Proprietary Contents may change without notice Reference data 10 2 This Document can not be used without Samsung s authorization ...

Страница 64: ...be punished under applicable International and or domestic law Country Web Site North America service samsungportal com Latin America latin samsungportal com CIS cis samsungportal com Europe europe samsungportal com China china samsungportal com Asia asia samsungportal com Mideast Africa mea samsungportal com GSPN Global Service Partner Network ...

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