Samsung SGH-N620 Service Manual
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Samsung SGH-N620 Service Manual

Samsung SGH-N620 Service Manual

Dual band mobile cellular phone
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ELECTRONICS
SERVICE
DUAL BAND Mobile Cellular Phone
DUAL BAND Mobile
Cellular Phone
SGH-N620
Manual
CONTENTS
1. Exploded Views and Parts List
2. PCB Diagrams
3. Electrical Parts List
4. Block Diagrams
5. Flow chart of trouble shooting

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Summary of Contents for Samsung SGH-N620

  • Page 1 DUAL BAND Mobile Cellular Phone ELECTRONICS SGH-N620 SERVICE Manual DUAL BAND Mobile Cellular Phone CONTENTS 1. Exploded Views and Parts List 2. PCB Diagrams 3. Electrical Parts List 4. Block Diagrams 5. Flow chart of trouble shooting...
  • Page 2 ELECTRONICS Samsung Electronics Co.,Ltd. Printed in Korea 12/2001 Rev 1.0 GH68-02583A...

  • Page 3: Table Of Contents

    1. Exploded Views and Parts List Main Main Parts List Travel Adapter Travel Adapter Parts List Battery Charger Test Jig 1-6-1 Test Jig normal EAR Microphone Data Kit 2. PCB Diagrams Main Top Main Bottom 3. Electrical Parts List Main Parts List Top Main Parts List Bottom 4.
  • Page 4 1. Exploded Views and Parts List 1-1 Main (SGH-N620) Exploded Views and Parts List...

  • Page 5: Main Parts List

    1-2 Main Parts List SEC CODE DISCRIPTION Q’TY SVC REMARK WHITE SILVER SKY BLUE BLACK FRONTCOVER ASS' Y GH75-01470A GH75-01470B GH75-01470C GH75-01470D SPEAKER 3001-001199 3001-001199 3001-001199 3001-001199 MIC ASS'Y GH59-00240B GH59-00240B GH59-00240B GH59-00240B KEY PAD(3X4) GH72-03376A GH72-03376A GH72-03376A GH72-03376A KEY PCB(3X4) GH59-00282A GH59-00282A GH59-00282A GH59-00282A...

  • Page 6: Travel Adapter

    1-3 Travel Adapter 1-4 Travel Adapter Parts List TYPE SEC CODE REMARK GH44-00171A CHINA 1-5 Battery Charger 1-6 Test Jig TEST JIG GH80-10508A Exploded Views and Parts List...
  • Page 7 TEST JIG CABLE GH39-00079A RF JIG CABLE GH39-00094A DM CABLE GH39-00080A Exploded Views and Parts List...

  • Page 8: Normal Ear Microphone

    1-6-1 Test Jig POWER SUPPLY 8922 or 8960 WIRELESS COMMVNCATIONS TEST SET RF JIG CABLE 232 CABLE TEST JIG CABLE 1-7 Normal EAR Microphone Wearable EAR Microphone GH59-00168A 1-8 Data Kit DATA KIT GH39-00078A Exploded Views and Parts List...

  • Page 9: Pcb Diagrams

    2. PCB Diagrams 2-1 Main Top L624 C211 C100 U200 C680 R520 C206 R524 C521 C205 R209 R536 C517 R534 R625 C701 R512 C129 C204 R208 C511 R207 R626 R547 C545 C544 C210 R406 R206 R407 R528 C203 C661 C209 C513 C542 R513...
  • Page 10 2-2 Main Bottom C671 U613 U110 R633 C119 C109 C555 C602 U601 U300 C533 C123 L600 U105 C125 U104 C607 R306 C669 R635 R636 R307 C554 R632 Q604 L605 L612 C534 R108 R640 C679 L606 C630 C631 C111 C632 C605 R644 C115 V400...

  • Page 11: Electrical Parts List

    3. Electrical Parts List 3-1 Main Parts List Top Reference SEC Code Part Description Vendor Part No C100 2404-001105 C-TA,CHIP;10UF,20%,6.3V,GP,TP,2012 TCSCS0J106MPAR C101 2203-000254 CL05B103KONC C-CERAMIC,CHIP;10nF,10%,16V,X7R,TP,1005,- C102 2203-000233 C-CERAMIC,CHIP;0.1nF,5%,50V,NP0,TP,1005 CL05C101JBNC C129 2203-000254 CL05B103KONC C-CERAMIC,CHIP;10nF,10%,16V,X7R,TP,1005,- C151 2203-005482 GRM36X5R104K10PT C-CERAMIC,CHIP;100nF,10%,10V,X5R,TP,1005,- C202 2404-001101 C-TA,CHIP;1uF,20%,16V,GP,TP,2012,- TESVSP1C105M8RTJ C203 2404-001101...
  • Page 12 Reference SEC Code Part Description Vendor Part No C505 2203-000233 C-CERAMIC,CHIP;0.1nF,5%,50V,NP0,TP,1005 CL05C101JBNC C506 2203-000233 C-CERAMIC,CHIP;0.1nF,5%,50V,NP0,TP,1005 CL05C101JBNC C507 2203-000233 C-CERAMIC,CHIP;0.1nF,5%,50V,NP0,TP,1005 CL05C101JBNC C508 2203-000233 C-CERAMIC,CHIP;0.1nF,5%,50V,NP0,TP,1005 CL05C101JBNC C509 2203-000254 CL05B103KONC C-CERAMIC,CHIP;10nF,10%,16V,X7R,TP,1005,- C510 2203-005503 C-CERAMIC,CHIP;0.18nF,5%,25V,NP0,TP,1005 CL05C181JANC C511 2203-000812 GRP1555C1H330JZ01E C-CERAMIC,CHIP;0.033nF,5%,50V,NP0,TP,1005 C512 2203-000812 C-CERAMIC,CHIP;0.033nF,5%,50V,NP0,TP,1005 GRP1555C1H330JZ01E C513 2203-000812 GRP1555C1H330JZ01E...
  • Page 13 Reference SEC Code Part Description Vendor Part No C553 2404-001231 C-TA,CHIP;47uF,20%,6.3V,GP,TP,3718 595D476X06R3A2T C553 2404-001162 C-TA,CHIP;47uF,20%,4V,LZ,TP,3216 F950G476MAAJZTQ2 C560 2203-003054 GRP1555C1H9R0DZ01E C-CERAMIC,CHIP;0.009nF,0.25pF,50V,NP0,TP,1005 C561 2203-000386 C-CERAMIC,CHIP;0.015nF,5%,50V,NP0,TP,1005 GRP1555C1H150JZ01E C590 2203-005482 GRP155R61A104KA01E C-CERAMIC,CHIP;100nF,10%,10V,X5R,TP,1005,- C591 2203-000254 C-CERAMIC,CHIP;10nF,10%,16V,X7R,TP,1005,- CL05B103KONC C617 2203-000679 CM05CG270J50AH C-CERAMIC,CHIP;0.027nF,5%,50V,NP0,TP,1005 C633 2203-005052 C1005C0G1H3R3CT C-CERAMIC,CHIP;0.0033nF,0.25pF,50V,NP0,TP,1005 C657 2203-001221 CL05B821KBNC...
  • Page 14 Reference SEC Code Part Description Vendor Part No R211 2007-001301 R-CHIP;68ohm,5%,1/16W,DA,TP,1005 RC1005J680CS R212 2007-000139 R-CHIP;220ohm,5%,1/16W,DA,TP,1005 RC1005J221CS R215 2007-000140 R-CHIP;1Kohm,5%,1/16W,DA,TP,1005 RC1005J102CS R217 2007-000162 R-CHIP;100Kohm,5%,1/16W,DA,TP,1005 RC1005J104CS R400 2007-000148 R-CHIP;10Kohm,5%,1/16W,DA,TP,1005 RC1005J103CS R401 2007-000162 R-CHIP;100Kohm,5%,1/16W,DA,TP,1005 RC1005J104CS R403 2007-000162 R-CHIP;100Kohm,5%,1/16W,DA,TP,1005 RC1005J104CS R404 2007-000162 R-CHIP;100Kohm,5%,1/16W,DA,TP,1005 RC1005J104CS R405 2007-000162 R-CHIP;100Kohm,5%,1/16W,DA,TP,1005...
  • Page 15 Reference SEC Code Part Description Vendor Part No R526 2007-000168 R-CHIP;470Kohm,5%,1/16W,DA,TP,1005 RC1005J474CS R527 2007-002796 R-CHIP;510ohm,5%,1/16W,DA,TP,1005 MCR01MZSJ511 R528 2007-000162 R-CHIP;100Kohm,5%,1/16W,DA,TP,1005 RC1005J104CS R529 2007-000157 R-CHIP;47Kohm,5%,1/16W,DA,TP,1005 RC1005J473CS R530 2007-002796 R-CHIP;510ohm,5%,1/16W,DA,TP,1005 MCR01MZSJ511 R531 2007-000139 R-CHIP;220ohm,5%,1/16W,DA,TP,1005 RC1005J221CS R532 2007-000141 R-CHIP;2.2Kohm,5%,1/16W,DA,TP,1005 RC1005J222CS R533 2007-000141 R-CHIP;2.2Kohm,5%,1/16W,DA,TP,1005 RC1005J222CS R535 2007-000148 R-CHIP;10Kohm,5%,1/16W,DA,TP,1005...
  • Page 16 Reference SEC Code Part Description Vendor Part No U430 1204-001811 IC-MELODY;YMU759-QE2,QFN,32P,-,PLASTIC, 6V,-,-20TO+85C,TP,- YMU759-QE2 U501 1205-001881 IC-COMM.CONTROLLER;VP40575,BGA,180P, VP40575 472MIL,PLASTIC,3.3V,-,-20to+85C,TR,OneC Processor U502 1001-001145 IC-ANALOG SWITCH;MAX4599EXT,-,SC70,6P,49MIL, MAX4599EXT-T SINGLE,5.5V,-40to+85C,PLASTIC,245mW,60ohm,25ns,30ns,0 U506 1202-001036 IC-VOLTAGE COMP;75W56,SSOP,8P,90MIL,DUAL,+-7V, TC75W56FK-TE12L CMOS,PLASTIC,7V,200MW,-40TO+85C,7V,7V,1PA,1PA,60NS U520 1103-001262 IC-EEPROM;24C512C1,512KBIT,LAP,8P,320MIL,-,2.7V,-, AT24C512C1-10CI-2.7 PLASTIC,-55TO+125C,6.0UA,CMOS,TP U580 1203-002247 IC-VOL. DETECTOR;S-809,SOT-23-5,5P,-,-,-, 150MW,-40TO+85C,50MA,-,TP S-80926ALMP-DAP-T2 U611...

  • Page 17: Main Parts List Bottom

    3-2 Main Parts List Bottom Reference SEC Code Part Description Vendor Part No GH61-00026A SPRING ETC-ANT.CONTACT;SGH-N620,BE-CU,-,-,-,-,-,-,GLD,-,- C105 2404-001105 C-TA,CHIP;10UF,20%,6.3V,GP,TP,2012 TCSCS0J106MPAR C106 2203-005061 CM05Y5V104Z16AH C-CERAMIC,CHIP;100nF,+80-20%,16V,Y5V,TP,1005 C107 2203-005065 CL10F105ZONC C-CERAMIC,CHIP;1000nF,+80-20%,10V,Y5V,TP,1608 C108 2203-000254 CL05B103KONC C-CERAMIC,CHIP;10nF,10%,16V,X7R,TP,1005,- C109 2404-001105 C-TA,CHIP;10UF,20%,6.3V,GP,TP,2012 TCSCS0J106MPAR C110 2203-005061 CM05Y5V104Z16AH C-CERAMIC,CHIP;100nF,+80-20%,16V,Y5V,TP,1005...
  • Page 18 Reference SEC Code Part Description Vendor Part No C555 2203-001017 CL05C040CBNC C-CERAMIC,CHIP;0.004nF,0.25pF,50V,NP0,TP,1005 C556 2203-000386 GRP1555C1H150JZ01E C-CERAMIC,CHIP;0.015nF,5%,50V,NP0,TP,1005 C557 2203-003054 GRP1555C1H9R0DZ01E C-CERAMIC,CHIP;0.009nF,0.25pF,50V,NP0,TP,1005 C600 2203-000438 C-CERAMIC,CHIP;1nF,10%,50V,X7R,TP,1005,- CM05X7R102K50AH C601 2203-000254 CL05B103KONC C-CERAMIC,CHIP;10nF,10%,16V,X7R,TP,1005,- C602 2203-000278 C-CERAMIC,CHIP;0.01nF,0.5pF,50V,NP0,TP,1005 C1005C0G1H100DT C604 2203-001259 C1005C0G1H080DT C-CERAMIC,CHIP;0.008nF,0.5pF,50V,NP0,TP,1005 C605 2203-005055 CL05C5R6CBNC C-CERAMIC,CHIP;0.0056nF,0.25pF,50V,NP0,TP,1005 C607 2203-000278 C1005C0G1H100DT...
  • Page 19 Reference SEC Code Part Description Vendor Part No C651 2203-000812 GRP1555C1H330JZ01E C-CERAMIC,CHIP;0.033nF,5%,50V,NP0,TP,1005 C652 2203-002443 CL05B331KBNC C-CERAMIC,CHIP;0.33nF,10%,50V,X7R,TP,1005 C653 2301-001197 ECHU1H391JX5 C-FILM,CHIP;0.39nF,5%,50V,TP,2x1.25x0.8mm,- C654 2301-001213 C-FILM,CHIP;6.8nF,5%,16V,TP,2012,- ECHU1C682JX5 C655 2203-000679 CM05CG270J50AH C-CERAMIC,CHIP;0.027nF,5%,50V,NP0,TP,1005 C658 2203-000812 GRP1555C1H330JZ01E C-CERAMIC,CHIP;0.033nF,5%,50V,NP0,TP,1005 C662 2203-002525 GRP155R71H561KD01E C-CERAMIC,CHIP;0.56nF,10%,50V,X7R,TP,1005 C664 2203-000233 C-CERAMIC,CHIP;0.1nF,5%,50V,NP0,TP,1005 CL05C101JBNC C665 2203-000233 C-CERAMIC,CHIP;0.1nF,5%,50V,NP0,TP,1005...
  • Page 20 Reference SEC Code Part Description Vendor Part No L622 2703-002198 INDUCTOR-SMD;10NH,5%,1.0X0.5X0.5MM CIH05T10NJNC L623 2703-002208 INDUCTOR-SMD;2.2NH,0.3NH,1.0X0.5X0.5MM CIH05T2N2SNC M100 4302-001119 BATTERY-LI(2ND);3V,0.1MAH,-,-,3.1V,- 02-828P0-53BKA Q300 0506-001004 TR-ARRAY;UMC5N,NPN/PNP,2,50V,-,-100mA,3 UMC5NTR Q303 0501-002346 2SB1427 TR-SMALL SIGNAL;2SB1427,PNP,500mW,SOT-89,TP,390-820 Q600 0504-001058 RN4985-TE85L TR-DIGITAL;RN4985,NPN/PNP,200mW,2.2Kohm/47Kohm,UMD6,TP Q601 0504-001058 RN4985-TE85L TR-DIGITAL;RN4985,NPN/PNP,200mW,2.2Kohm/47Kohm,UMD6,TP Q602 0504-001058 RN4985-TE85L TR-DIGITAL;RN4985,NPN/PNP,200mW,2.2Kohm/47Kohm,UMD6,TP Q603 0504-001012...
  • Page 21 Reference SEC Code Part Description Vendor Part No R615 2007-000138 R-CHIP;100ohm,5%,1/16W,DA,TP,1005 RC1005J101CS R616 2007-000138 R-CHIP;100ohm,5%,1/16W,DA,TP,1005 RC1005J101CS R621 2007-000174 R-CHIP;47ohm,5%,1/16W,DA,TP,1005 RK73K1ETP470J R623 2007-007311 R-CHIP;22Kohm,1%,1/16W,DA,TP,1005 MCR01MZSF2202 R624 2007-000148 R-CHIP;10Kohm,5%,1/16W,DA,TP,1005 RC1005J103CS R632 2007-000140 R-CHIP;1Kohm,5%,1/16W,DA,TP,1005 RC1005J102CS R633 2007-000148 R-CHIP;10Kohm,5%,1/16W,DA,TP,1005 RC1005J103CS R634 2007-000148 R-CHIP;10Kohm,5%,1/16W,DA,TP,1005 RC1005J103CS R635 2007-000141 R-CHIP;2.2Kohm,5%,1/16W,DA,TP,1005...
  • Page 22 Reference SEC Code Part Description Vendor Part No U602 2909-001146 LMG002S-5008C FILTER-DUPLEXER;942.5MHZ,897.5MHZ,1.4/1.5DB,TP,-,- U604 2904-001328 FILTER-SAW;1.8425GHZ,75MHZ,925~960MHZ/2.1DB, FAR-G6CS-1G8425-L250 TP,925-960MHZ/2.8DB,0-1300MHZ/20DB U605 1205-001935 HD155128TF IC-TRANSCEIVER;HD155128TF,TP,56P,-,-,3V,400mW,-20to+75C,QFP,- U607 4709-001214 COUPLER-DIRECTION;880-915MHz,19.5+-1dB, DCS214E-0897 13dB,2.0X1.25X0.7mm,TP U608 1201-001821 PF08122BS-TB IC-POWER AMP;08122,-,8P,-,DUAL,34DB,-,7V,-,-25TO+100C,-,-,-,-,- U609 4709-001213 COUPLER-DIRECTION;1710-1785MHz,14+-1dB, DCS214E-1747 12dB,2.0X1.25X0.7mm,TP U610 2806-001259 OSCILLATOR-VCO;1748MHZ,-,-,TP,2.85V,- VOD1748C29KRA U612 1209-001337 IC-PLL/SYNTHESISER;SI4133G-XM2R,LCC,28P,-,-,...
  • Page 23 4. Block Diagrams 4-1 Main Base Band Block Diagrams...

  • Page 24: Main Rf

    4-2 Main RF Block Diagrams...

  • Page 25: Rf Tx Part

    4-2-1 RF Tx Part Block Diagrams...

  • Page 26: Rf Rx Part

    4-2-2 RF Rx Part Block Diagrams...

  • Page 27: Power On

    5. Flow chart of trouble shooting 5-1 Power ON 'POWER ON' does not work Check the Battery Voltage Charge the Battery is more than 3.4V The node Check U100 and the path from +VBATT between D100 and M100 = 2.8V to M100 U106 pin 2,3,4 >...
  • Page 28 Flow chart of trouble shooting...
  • Page 29 5-2 Initial Initial Failure Check and repair the important U410 pin 4 = "H" ? signals of U501 as follows The node between R505 and C509 Check U505 = "H" (RST) R509 = "H" (BOOT) Resolder R509 Check all the other connection by Test S/W R526 = "H"...
  • Page 30 Flow chart of trouble shooting...

  • Page 31: Charging Part

    5-3 Charging Part Abnormal charging part Check the CN220 pin 1, 2 3.8V ? Replace TA Resolder Check the U303 pin 3 3.8V ? C200, V210, C316 U303 pin 4 = "L" ? Resolder R328 Resolder components around Check the U303 pin 5 1.5V ? U303 Flow chart of trouble shooting...
  • Page 32 Flow chart of trouble shooting...

  • Page 33: Sim Part

    5-4 Sim Part Phone can't access SIM card Check the circuit related to U102 U300 pin4,6 = 3V ? Replace the PBA U300 pin5 = "H" ? Replace U300 U300 pin2,3 = 3V ? Resoldering CN301 and check open CN310 pin1,7 = 3V ? connection from U300 to CN301 After Power ON, Check SIMCLK Signal on CN310 pin 1...
  • Page 34 Flow chart of trouble shooting...

  • Page 35: Microphone Part

    5-5 Microphone Part Microphone does not work Check the microphone Reassemble the MIC to Front Case contact state Check the circuit Resolder the R525, R527, R530, R531 from MIC or C561 C553, C532 and C538 Replace the Key PCB Check the Key PCB Flow chart of trouble shooting...
  • Page 36 Flow chart of trouble shooting 5-10...

  • Page 37: Speaker Part

    5-6 Speaker Part Receiver does not work Check the depression of Modify the receiver pins the receiver pins Replace the receiver Is receiver working? 5-11 Flow chart of trouble shooting...

  • Page 38: Key Data Input

    5-7 Key Data Input Check Initial operation the pin 1, 3, 5 and 7 Replace the PBA of CN211 low? When one of the keys is pushed, Resolder pin 1, 3, 5 and 7 one of pin 1, 3, 5 and 7 of CN211 of CN211 is high ? Key PCB is OK ?
  • Page 39 VC040214X300 V208 VC040214X300 V207 VC040214X300 V206 VC040214X300 U636 VC040214X300 V204 VC040214X300 V203 VC040214X300 V202 VC040214X300 V201 VC040214X300 V200 5-13 Flow chart of trouble shooting...

  • Page 40: Ring Indicator

    5-8 Ring Indicator Ring Indicator LED does not work GPO2 by Test S/W Q200, Q202, Q203 pin 2 = "H" ? Between LED201 and Replace LED201 R210, R211, R212 = "L" ? Resolder Check the LED Q200, Q202, Q203 R210, R211, R212 Flow chart of trouble shooting 5-14...
  • Page 41 5-15 Flow chart of trouble shooting...

  • Page 42: Back Light

    5-9 Back Light Backlight does not work Backlight "ON" mode Select backlight "ON" mode in the menu? Between R215 and R217 = "H"? GPO1 by test S/W LCD BACKLIGHT KEY PCB LED CN200 Pin 35, 36, 39, 40 3.3V? Check the circuit related U100 LCD backlight on ? Resolder LCD or Check Q201 Resolder R215, R217...
  • Page 43 5-17 Flow chart of trouble shooting...

  • Page 44: Melody Part

    5-10 Melody Part Melody is not work ing U430 Pin 7 Check the circuit contain ing U102 is H ? Check U430 Pin 1 Check the U41 3, U613 Wor king? U430 Pin 15 = H ? Check the R441, U106 U430 Pin 14 is wor kin g Check the R645, R440, C437...
  • Page 45 25 24 23 22 21 20 SPVSS SPVDD SDIN SYNC SCLK HPOUT-R SDOUT HPOUT-L/MONO 5-19 Flow chart of trouble shooting...

  • Page 46: Gsm Receiver

    5-11 GSM Receiver Rx On RF input : CH center freq. + 67.7 kHz Amp. : -50 dBm U602 Check IF connector Pin 8 - > resolder U602 Check Resolder & U602 Pin 10 VC1 : L Pin 10 VC2 : L U604 Resolder Pin 1...

  • Page 47: Gsm Transmit

    5-12 GSM Transmit Tx On (level : 5) U602 Resolder Pin 8 U600 U602 Check Change or Resolder VC1 : L Pin 5 U602 VC2 : H Check Ant. S/W, Control Circuit U607 Resolder Pin 4 U607, C608 Check U608 U608 : +VBATT Resolder or Pin 1...

  • Page 48: Dcs Receiver

    5-13 DCS Receiver Rx On RF input : CH center freq. + 67.7 kHz Amp. : -50 dBm U602 Check IF connector Pin 8 - > resolder U602 Resolder & Check U602 Pin 1 Pin 1 VC1 : L VC2 : L U604 Resolder Pin 3...

  • Page 49: Dcs Transmit

    5-14 DCS Transmit Tx On (level : 0) U602 Resolder Pin 8 U600 U602 Check Change or Resolder VC1 : H Pin 3 U602 VC2 : L Check Ant. S/W, Control Circuit U609 Resolder Pin 4 U609, C611 Check U608 U608 : +VBATT Resolder or Change Pin 8...
  • Page 50 GNDR GNDR SDAT RFOUT SCLK VDDR SENB AUXOUT VDDI PWDNB IFOUT GNDI 41 40 33 32 MIX2OUTB GNDIFLO MIX2OUT IOUT VCCIF IOUTB GNDIF QOUT RFLOIN QOUTB VCCRELO GNDIQ MIX1OUT VCCIQ MIX1OUTB RESET VCCMIX GNDMIX IINB MIX1GSMIN MIX1GSMINB QINB ICURAD PLLOUT VCTL VCC1 VDD1...

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