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Samsung SGH-J770 Service Manual
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Samsung SGH-J770 Service Manual

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GSM TELEPHONE
GSM TELEPHONE
SGH-J770
1.
Safety Precautions
2.
Specification
3.
Product Function
4.
Array course control
5.
Exploded View and Parts List
6.
Main Electrical Parts List
7.
Block Diagrams
8.
PCB Diagrams
9.
Flow Chart of Troubleshooting
10. Reference data
11. Disassembly and Assembly
Instructions
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CONTENTS

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Summary of Contents for Samsung SGH-J770

  • Page 1 GSM TELEPHONE SGH-J770 GSM TELEPHONE CONTENTS Safety Precautions Specification Product Function Array course control Exploded View and Parts List Main Electrical Parts List Block Diagrams PCB Diagrams Flow Chart of Troubleshooting 10. Reference data 11. Disassembly and Assembly Instructions...
  • 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. 09. Rev.1.0...
  • Page 3 1) As seen figure 1, combine the Screw Cap.[Figure 1] tape.[Figure 1] 2) combine the 3*4 KEY PAD on the front.[Figure 2] 2) After combine Lower, screw the 4 Bolts.[Figure 2] SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 4 [Figure 2] front.[Figure 2 ] 3) Insert "Volume key" and "MP3 Key"on the ※ Caution right side of the front. 1) Connector should be certainly clicked. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 5 2) As seen figure 2, Screw the 5 Bolts. [Figure 2 ] ※ Caution 1) Attach the Rear Deco and PC Sheet. [Figure 1] 1) Be careful of the possible damage on FPCB. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 6 1) Remove the three kind of side key from the front.[Figure 1] 1) Be careful with the damage of Slide F-PCB. 2) Detach the Connecter of 3*4 key F-PCB. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 7 1) Remove the Screw cap 2points.[Figure 1] 1) Detach the conduction tape carefully. 2) Unscrew 4points on the Slide Lower.[Figure 2] 2) Notice the F-PCB so as not to damage. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 8 ※ Caution 1) Be careful with the damage of LCD. 2) Be careful with the damage of F-PCB 1) Be careful with the damage of LCD. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 9 Resolder OSC300, C316, and C318 PM300 14pin (CLK32K)=32KHZ C300(+VDD_IO_LOW) & Check the related circuit C302(+VDD_IO_HIGH) = "H"? +VDD_GSM_CORE Resolder L300 and L334 = 1.2V? Check the initial operation 10-1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 10 REF_ON_PMU PWREN1 MICBIAS MIC_BIAS_2.1V PWREN2 ONKEYN PWREN2 _ONKEY C324 VDD_IO_LOW_1.8V 32KHz_DIGIT R325 VDD_KEY_3.3V C325 VBAT VDD_SD_2.9V C326 L300 R334 VDD_GSM_CORE_1.2V C327 VDD_VIB_3.3V C328 C329 10-2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 11 Flow Chart of Troubleshooting PM300 10-3 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 12 UCP200 pin B9 (RSTON) ="H"? Replace UCP200 UME200 pin C5(RSTEXTn) Change PBA or TP_EXT = "H" ? Check the 16bit data signal & memory CE 10-4 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 13 BT_RST HDP15 HDP16 HDP17 U503 HFR_P HFR1 MCLK D_REF_CLK R218 HFR_N HFR2 MCLKSEL JSEL J_SEL C224 ADV_N VREF ADVn C225 EAR1 EAR1 EAR2 EAR2 10-5 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 14 C206 C326 C207 U503 C214 C322 R315 TP_DATA200 C222 C225 C212 C221 R317 R316 TP_CS201 ZD504 C508 UME200 C506 R509 R506 R318 R201 R203 10-6 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 15 Resolder or Replace F500 or F500 PIN3 = "L"? Resolder TA300, C332, R302, and R300 Check the PM300 pin 46 ≒ 1.4V Replace ZD300 10-7 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 16 REF_ON_PMU PWREN1 MICBIAS MIC_BIAS_2.1V PWREN2 ONKEYN PWREN2 _ONKEY C324 VDD_IO_LOW_1.8V 32KHz_DIGIT R325 VDD_KEY_3.3V C325 VBAT VDD_SD_2.9V C326 L300 R334 VDD_GSM_CORE_1.2V C327 VDD_VIB_3.3V C328 C329 10-8 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 17 F500 9 10 1 CH1 CH5 6 C501 Digital External Interface 3 CH2 CH3 4 C502 C503 V_EXT_CHARGE_IF_5.0V V_EXT_CHARGE_5.0V U500 C504 _EN _FLAG C505 10-9 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 18 Flow Chart of Troubleshooting OSC100 PM300 10-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 19 C619 TP_RTCK R208 C213 C203 R209 C215 C205 C209 C206 C207 C326 U503 C214 C322 R315 TP_DATA200 C222 C225 C212 C221 R317 R316 TP_CS201 10-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 20 Resolder or Replace SIM300 pin3 of SIM300 in a few second After SIM card insert, Replace PBA SIM300 pin 2 = "H(SIM_RST)"? Check the SIM Card 10-12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 21 Flow Chart of Troubleshooting SIM_VCC_3.0V R328 SIM300 SIMRST SIMCLK SIMIO 11 11 C331 C330 T-flash / USIM Socket 10-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 22 Flow Chart of Troubleshooting CK600 10-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 23 Resolder L403, L404, C427, C430, C428, Check MIC Connection C425, R432, C424, C431 and R415 Check the KEY PBA MIC Replace the KEY PBA 10-15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 24 REF_ON_PMU PWREN1 MICBIAS MIC_BIAS_2.1V PWREN2 PWREN2 _ONKEY ONKEYN C324 VDD_IO_LOW_1.8V 32KHz_DIGIT R325 VDD_KEY_3.3V C325 VBAT VDD_SD_2.9V C326 L300 R334 VDD_GSM_CORE_1.2V C327 VDD_VIB_3.3V C328 C329 10-16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 25 KEY_ROW(3) MIC_MAIN_P KEY_ROW(4) FLIP VDD_IO_HIGH_2.9V C600 MIC_MAIN_N D601 D602 1 CH1 CH5 6 D604 3 CH2 CH3 4 C636 D610 U504 KEY PBA CON 10-17 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 26 Flow Chart of Troubleshooting PM300 10-18 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 27 Resolder U401 Does not work Ringtone and Mp3 ? Replace U401 Resolder L406, L405, C602 and C635 Is Speaker working? Change Speaker Motor ASS'Y 10-19 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 28 C202 C619 TP_RTCK R208 C213 C203 R209 C215 C205 C209 C206 C326 C207 U503 C214 C322 R315 TP_DATA200 C222 C225 C212 C221 R317 R316 10-20 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 29 LCD_CS C602 C604 C601 C609 C634 C635 C632 R601 C629 R605 C603 R602 C633 R603 R604 C628 C630 C631 C637 C619 SUB BOARD CON 10-21 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 30 R603 C202 C619 TP_RTCK R208 C213 C203 R209 C215 C205 C209 C206 C207 U503 C214 C322 R315 TP_DATA200 C222 C225 C212 C221 R317 R316 10-22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 31 Key, does the key have tension? Change Side Key(Volume Key or Camera Key) All of the key doesn't work Replace the PBA except POWER ON KEY ? 10-23 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 32 D604 3 CH2 CH3 4 C636 D610 U504 KEY PBA CON VK600 CK600 KEY_COL(0) KEY_COL(3) KEY_COL(1) KEY_ROW(4) KEY_ROW(4) SIDE KEY & CAMERA KEY FPCB 10-24 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 33 Is LCD Contrast set on high Set LCD Contrast on high level level in the Menu? Resolder R604 Is HDC601 pin 42 "H" ? Repalce LCD Module 10-25 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 34 LCD_CS C602 C604 C601 C609 C634 C635 C632 R601 C629 R605 C603 R602 C633 R603 R604 C628 C630 C631 C637 C619 SUB BOARD CON 10-26 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 35 10-9. Key Back Light Main Key LED does not work Resolder C636 HDC600 pin20 = "H"? Resolder C325 HDC600 pin8 = 3.3V ? Replace MAIN KEY PBA 10-27 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 36 R204 R20 6 R207 C428 R215 R214 C634 C603 R217 R604 R213 R602 R212 R603 C619 R208 C203 R209 C205 C206 C326 C207 C214 10-28 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 37 LCD_CS C602 C604 C601 C609 C634 C635 C632 R601 C629 R605 C603 R602 C633 R603 R604 C628 C630 C631 C619 C637 SUB BOARD CON 10-29 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 38 REF_ON_PMU PWREN1 MICBIAS MIC_BIAS_2.1V PWREN2 ONKEYN PWREN2 _ONKEY C324 VDD_IO_LOW_1.8V 32KHz_DIGIT R325 VDD_KEY_3.3V C325 VBAT VDD_SD_2.9V C326 L300 R334 VDD_GSM_CORE_1.2V C327 VDD_VIB_3.3V C328 C329 10-30 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 39 Flow Chart of Troubleshooting VK600 PM300 CK600 10-31 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 40 C224 C634 C603 R217 R501 R500 R604 R213 R602 R212 R603 C202 C619 TP_RTCK R208 C213 C203 R209 C215 C205 C209 C206 C207 C326 10-32 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 41 Reconnect the camera module connector Resolder R602 CON600 Pin 45, 46 = H? Replace CAMERA MODULE Replace LCD Module Is there another problem? Replace the camera module 10-33 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 42 Resolder C413, C410, R404 Check U400 pin F6,B6 > 2.9V & & Check U400 pin A6,B1 > 1.8V Resolder or Replace U400 Check UCP200 10-34 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 43 Resolder C119, C120, U104 pin 25 ≥ -70dBm Check & Resolder U107pin 11,12,16,29, U107 pin 4,5,6,7 C128,C134,C137 32,33,36 ≥ 2.8V ≥ 0.2Vp_p Resolder U107 Check UCP200 10-35 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 44 Check VBAT or PAM control signal U107 pin U107 pin 4,5,6,7 Check U107, 11,12,16,29 ≥ 0.2Vp_p C128,C134,C137 32,33,36 ≥ 2.8V Resolder U107 Check UCP200 10-36 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 45 U107 pin11,12,16, U107 pin 4,5,6,7 Check & Resolder 29,32,33,36 ≥ 2.8V ≥ 0.2Vp_p C128, C134, C137 pin 10 ≥ 1.8V Resolder U107 Check UCP200 10-37 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 46 U107 pin11,12,16,29, Check & Resolder U107 pin 4,5,6,7 32, 33,36 ≥ 2.8V C128, C134, C137 ≥ 0.2Vp_p pin 10 ≥ 1.8V Resolder U107 Check UCP200 10-38 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 47 21 ≥ -70dBm U107 pin11,12,16, U107 pin 4,5,6,7 Check & Resolder 29,32,33,36 ≥ 2.8V ≥ 0.2Vp_p C128, C134, C137 Resolder U107 Check UCP200 10-39 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 48 Check +VBAT or PAM control signal U107 U107 pin 4,5,6,7 pin11,12,16,29,32, Check & Resolder ≥ 0.2Vp_p 33,36 ≥ 2.8V C128, C134, C137 Resolder U107 Check UCP200 10-40 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 49 RAMP XTAL1 R113 VCC_SYN_2.8V VDD4 C135 OSC100 VDD3 GND1 C137 VDD_IO_LOW_1.8V C138 26M_CLK R115 C139 D_REF_CLK RF_EN RX_TX_IP RF_DATA RF_CLK RX_TX_IN RX_TX_QP RX_TX_QN OSC100 10-41 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 50 Check for the clock at Resolder C101 C101 check U107 pin8 =26MHz = 26MHz TP105,TP106, TP107,TP108 ≥ 1.8V check UCP200 Pin C5 ≥ 1.7V(32kHz) replace U103 10-42 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 51 ANT101 GPIO[6]|DA+IP TP102 GPIO[7]|FCS_IP BT_RST U102 U103 GPIO[8]|DCLK_IP RESETN C111 GPIO[9]|DB_IP GPIO[10]|INT_SPI GND GND C109 C110 GPIO[11]|MISO_SPI GPIO[12]|CLK_SPI L105 GPIO[13]|CS_SPI L104 L111 GPIO[14]|MOSI_SPI U102 10-43 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 52 8. Block Diagrams 8-1. Functional Block Diagram...
  • Page 53 Block Diagrams 8-2. BLUETOOTH/FM Radio Block Diagram 2400 ~ 2485 MHz UART clock request Mobile Phon e Bluetoot h system clock low power clock reset & power down PTA Coexistence low power clock system clock...
  • Page 54 Block Diagrams Camera Module CMOS SPK & motor module 2M pixel 176 x 220, 1.76"262K QCIF TFT RF Block SI4221(RF IC) SIM CARD RF3159 (Power AMP) sliding Type, 3V only Intenna LMG003W-5198A(FEM) PNX6515 (BGA-228) Audio Amp Memory(SEC) GSM/GPRS/ 256M/512M/256Mbit max9877 EDGE/UMTS NOR/OneNAND/UtRAM I2C interface...
  • Page 55 9. PCB Diagrams － Main top view C636 C415 R410 C414 R411 R601 C604 C423 C429 C504 U502 R408 R510 C601 C421 D500 C633 L500 R511 R406 R405 C637 TA401 L402 C422 C631 TA400 R508 R413 C630 R605 R400 C629 R409 R600 C628...
  • Page 56 PCB Diagrams － Main bottom view HDC600 C105 C308 R304 C104 C107 D609 C109 L104 R102 C111 D60 0 D602 C101 C600 C42 4 C431 L40 3 L404 SC103 C131 TA100 C330 C129 R328 C125 C331 C126 C127 R103 R101 R308 D611 C307...
  • Page 57 R-CHIP 2007-000148 R328,R402,R415 R-CHIP 2007-000157 R318 R-CHIP 2007-000159 R313,R316,R317 R-CHIP 2007-000162 R203,R210,R217,R305 R-CHIP 2007-000162 R321 R-CHIP 2007-000165 R323 R-CHIP 2007-000166 R324 R-CHIP 2007-000170 R510,R511 R-CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 58 C-CER,CHIP 2203-000812 C502,C503 C-CER,CHIP 2203-000386 C121,C418,C419,C422 C-CER,CHIP 2203-000386 C423 C-CER,CHIP 2203-000425 C225,C316,C318 C-CER,CHIP 2203-000438 C200,C218 C-CER,CHIP 2203-000679 C206,C210,C214 C-CER,CHIP 2203-000812 C131,C132,C508 C-CER,CHIP 2203-000995 C113 C-CER,CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 59 C-CER,CHIP 2203-006260 C414,C415,C416,C417 C-CER,CHIP 2203-006324 C319 C-CER,CHIP 2203-006348 C317,C504 C-CER,CHIP 2203-006361 C327 C-CER,CHIP 2203-006423 C103,C106,C603,C629 C-CER,CHIP 2203-006423 C634 C-CER,CHIP 2203-006562 C217,C219,C306,C307 C-CER,CHIP 2203-006562 C308,C309,C322,C407 C-CER,CHIP SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 60 CD300 CONNECTOR-CARD EDGE 3710-002696 IFC500 SOCKET-INTERFACE 3711-006278 HDC601 HEADER-BOARD TO BOARD 3711-006326 HDC600 HEADER-BOARD TO BOARD; 3711-006831 BTC500 HEADER-BATTERY 4202-001454 ANT101 ANTENNA-CHIP; 4302-001180 BAT300 BATTERY-LI(2ND) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 61 SC106 IPR SHIELD-CAN CLIP GH71-06419A ANT100,ANT102 NPR-ANTENNA CONTACT 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 62 K750 mic Follow the marked track color.There is more here. www.efrcom.net renkleri takib et/daha fazla ve detayl semalar burda...