manualshive.com logo in svg

Samsung SGH-E340, Service Manual

Share
Download
Samsung SGH-E340 Service Manual Download Page 44

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-24

7-15. DCS Transmitter

MODULE1 Pin8

>= 20dBm

Resolder CN101, C101

TX ON (5Level)

Check MODULE1

pin12 = H (2.68V),

pin9,10 = L

MODULE1 pin13

>= 18dBm

U702 pin9
>= 18dBm

U702 pin1

<= -15dBm

U702 pin1

<= -11dBm

Change or Resolder

MODULE1

Check ANT Switch

control circuit

Resolder L118, R144, C154

Resolder R106, R107, R108

U100 pin

H8,J8,H7,J7

>= 1V

Yes

Check U702

pin 5, OK?

Resolder or Change U702

Check +VBAT or PAM

control signal

Check & Resolder RFLO

signal, RF13MHz,

RF PSU Part

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

No

No

END

Check U200

Resolder U100

Yes

R135, C157, C123

>=2.7V

OK?

Summary of Contents for SGH-E340

Page 1: ...SM TELEPHONE SGH E340 GSM TELEPHONE CONTENTS 1 Specification 2 Circuit Description 3 Exploded Views and Parts List 4 Electrical Parts List 5 Block Diagrams 6 PCB Diagrams 7 Flow Chart of Troubleshooting ...

Page 2: ...Co Ltd MAY 2005 Printed in Korea Code No GH68 07223A BASIC This 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 ⓒ ...

Page 3: ...00 Phase 1 Freq Band MHz Uplink Downlink 890 915 935 960 880 915 925 960 1710 1785 1805 1880 ARFCN range 1 124 0 124 975 1023 512 885 Tx Rx spacing 45MHz 45MHz 95MHz Mod Bit rate Bit Period 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 Modulation 0 3GMSK 0 3GMSK 0 3GMSK MS Power 33dBm 5dBm 33dBm 5dBm 30dBm ...

Page 4: ...m 11 8 4dBm 12 6 4 dBm 13 4 4 dBm 14 2 5 dBm 15 0 5 dBm 1 2 GSM TX power class 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 GSM900 5 33 3 dBm 6 31 3 dBm 7 29 3 dBm 8 27 3 dBm 9 25 3 dBm 10 23 3 dBm 11 21 3 dBm 12 19...

Page 5: ...R U100 This chip is fully integrated GSM GPRS tri band transceiver with VCO loop filters and most of the passive component in it And also fully integrated fractional N RF synthesizer with AFC control possibility RF VCO with integrated supply regulator Semi integrated reference oscillator with integrated supply regulator RF Receiver front end amplifies the E GSM900 DCS1800 and PCS1900 aerial signal...

Page 6: ... ensure proper system behavior during start up or in the event of a fault condition low microprocessor voltage insufficient battery energy or excessive die temperature Backlight Brightness Modulator The Backlight Brightness Modulator BBM contains a programmable Pulse width modulator PWM and FET to modulate the intensity of a series of LED s or to control a DC DC converter that drives LCD backlight...

Page 7: ... charger IC and supply current to battery When fault condition caused CHG_ON signal level change low to high and charger IC stop charging process 2 2 7 Audio HFR_P and HFR_N from PCF5212EL1 are connected to the main speaker via analog switches MIC_P and MIC_N are connected to the main MIC as well EAR1 is the source of External Speaker YMU762 is a synthesizer LSI for mobile phones This LSI has a bu...

Page 8: ...otstrap loader in the ARM core HD 0 15 data lines and HA 0 23 address lines are connected to memory and YMU762 to communicate MV3018B Camera DSP Chip controls the communication between ARM core and DSP core OEn WEn control the access of memory KROW and KCOL recognize the key string input status It has J TAG control pins TDI TDO TCK for ARM and DSP core J SEL signal controls different access to ARM...

Page 9: ...ew and Parts List 3 1 This Document can not be used without Samsung s authorization 3 1 Exploded View QFR01 QMO01 QSP01 QKP01 QRE01 QMP01 QVK01 QAN02 QME01 QIF01 QMI01 QCR06 QMW02 QFU01 QLC01 QCA01 QCR05 QFR02 QFL01 QSC01 QCR04 QMW01 QRF01 QVO01 QSC14 QRF03 QBA01 QMI03 ...

Page 10: ...CROPHONE ASSY GH30 00199A QMP01 PBA MAIN GH92 02049A QVK01 UNIT VOLUME KEY GH59 02067A QAN02 INTENNA GH42 00557A QRE01 MEC REAR COVER GH75 06861A QIF01 COVER IF CONNECTOR GH72 19704A QCR06 SCREW MACHINE 6001 001155 QRF01 RF COVER GH74 14863A QBA01 BATTERY GH43 01677A QMW02 WINDOW SUB GH72 19678A QFU01 UPPER FOLDER GH75 06800A QLC01 LCD GH07 00680A QMO01 MOTOR DC GH31 00154D QSP01 SPEAKER 3001 0017...

Page 11: ...E E GH59 01392A LABEL P WATER SOAK SCH X110 NORGE 1 GH68 02026A LABEL R MAIN EU SGH E340 XET POLYE GH68 06970A MANUAL USE SGH E340 XET ITALIAN ITAY GH68 07076A CUSHION CASE 1 2 SGH X640 PULP T0 8 GH69 02723A BOX P UNIT EU SGH E340 SC300 S120 GH69 02779A MPR BOHO VINYL IF SGH E720 950 85X1 GH74 13606A MPR PORON MOTOR SGH E340 SRS P4 9XT0 GH74 14191A MPR TAPE LCD MODULE SGH E340 PSR 5X3 GH74 14198A ...

Page 12: ...st 3 4 This Document can not be used without Samsung s authorization 3 3 Test Jig GH80 03306A 3 3 2 RF Test Cable GH39 00283A 3 3 3 Test Cable GH39 00337A 3 3 5 Power Supply Cable 3 3 6 DATA CABLE GH39 00331A 3 3 7 TA GH44 00482A 3 3 1 USB JIG Cable 3 3 4 Serial Cable CSA LL64151 A ...

Page 13: ...LED612 ㅤ LEDㅤ LED613 LED614 ㅤ LEDㅤ LED615 LED616 ㅤ LEDㅤ LED617 0801 002237 IC U302 U709 0801 002294 IC U404 1001 001231 IC U601 U603 U607 1001 001306 IC U608 1001 001331 IC U609 U610 1009 001018 IC U602 1108 000018 IC U710 1201 002223 IC U702 1202 001068 IC U605 1203 003208 IC U701 1203 003545 IC U402 1203 003568 IC U403 1203 003737 IC U401 U604 1203 003742 IC U505 1204 002161 IC U303 1205 002647 ...

Page 14: ...CHIP R315 R322 R323 ㅤ R CHIP R324 R328 R333 ㅤ R CHIP R402 R407 R630 ㅤ R CHIP R631 2007 000172 R CHIP R101 R106 2007 000242 R CHIP R205 R206 2007 000758 R CHIP R500 R502 2007 000831 R CHIP R606 2007 001303 R CHIP R302 2007 001325 R CHIP R304 2007 001339 R CHIP R627 2007 002970 R CHIP R609 R610 R611 ㅤ R CHIP R612 R613 R614 ㅤ R CHIP R615 R616 R617 ㅤ R CHIP R618 R619 R620 ㅤ R CHIP R622 R623 R624 ㅤ R C...

Page 15: ...ㅤ C CERAMIC C335 C410 C632 ㅤ C CERAMIC C633 C634 2203 000995 C CERAMIC C166 C605 C614 ㅤ C CERAMIC C705 C706 C708 ㅤ C CERAMIC C709 2203 001153 C CERAMIC C426 2203 001178 C CERAMIC C716 2203 001221 C CERAMIC C313 2203 001259 C CERAMIC C115 C144 2203 002443 C CERAMIC C608 2203 002668 C CERAMIC C111 C141 C142 2203 005050 C CERAMIC C606 2203 005052 C CERAMIC C626 C627 2203 005054 C CERAMIC C601 C610 22...

Page 16: ...02201 INDUCTOR SMD L125 2703 002267 INDUCTOR SMD L124 2703 002346 INDUCTOR SMD L401 2703 002365 INDUCTOR SMD L101 L102 L103 ㅤ INDUCTOR SMD L104 2703 002596 INDUCTOR SMD L112 2801 004373 CRYSTAL UNIT OSC400 2809 001294 OSCILLATOR VCTCXO U102 2901 001286 FILTER EMI SMD F701 F702 F703 ㅤ FILTER EMI SMD F704 F705 F706 ㅤ FILTER EMI SMD F707 F708 F709 2901 001315 FILTER EMI SMD U502 2911 000007 DUPLEXER ...

Page 17: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization 5 Block Diagrams 5 1 5 1 RF Solution Block Diagram ...

Page 18: ...STEM CLOCK 26MHz MV3018SQ 512M OneNAND MEMORY KEY_BOARD LCD BB INTERFACE Serial Data Interface I O Interface A D Interface AFC PAMP RF INTERFACE PMU Li Ion Battery Standard Charging Circuit RTC_CLOCK 32 768KHz SIM CARD Battery Type Battery Voltage Battery Temperature VDD_RX_TX VCC_SYN VDD_IMGE AVDD AVDD_HFA VDD_IO_HIGH VDD_IO_LOW VDD_SLEEP VDD_IO_LOW MIC_BIAS RSTON IT_PMU SIMIO MIC RECEIVER SPEAKE...

Page 19: ...SAMSUNG Proprietary Contents may change without notice 6 PCB Diagrams 6 1 This Document can not be used without Samsung s authorization 6 1 PCB Top Diagram ...

Page 20: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 6 2 This Document can not be used without Samsung s authorization 6 2 PCB Bottom Diagram ...

Page 21: ...ower On does not work Change the Battery END No Yes C405 VINT 2 7V Check the PMU related to VINT No Yes Check the Clock at R401 32KHZ Resolder OSC400 No Yes C424 VDD_IO_LOW C423 VDD_IO_HIGH H Check the related circuit No Yes C402 VDD_GSM_CORE 1 8V Check the VDD_GSM_CORE circuit No Yes Check for the clock at C303 26MHz Check the clock generation circuit related to U100 No Yes Check the initial oper...

Page 22: ...2 SIMIOHC 9 SIMVCC 41 VBAT 31 VCHG 28 RF12VBAT 23 22 RF1VDD RF2VDD 24 SCL 2 SC N 38 SCP 37 SDA 3 SIMCKCD MICBIAS 12 NC 53 54 NC OSCI 26 OSCO 25 PWREN1 6 PWREN2 5 REFC 48 GPO2 47 46 GPO3 18 HCVBAT HCVDD 17 IOD2VBAT 15 14 IOVDD 20 LPD1VBAT LPVDD 19 D1VDD 21 16 D2VDD D3VDD 39 GND 49 50 GND GND 51 52 GND GPO1 U403 CHGCUR BATMAX 34 CHGDRV 33 CLK32K 4 CPVBAT 36 CPVDD 35 VDD_IO_LOW C40 6 C422 22UF VDD_IO...

Page 23: ...rt of Troubleshooting This Document can not be used without Samsung s authorization 7 3 7 2 Initial U305 pin 5 RSTON H Initial Failure Check the circuit related to reset END No Yes Is U709 pin 4 OK Yes Yes No Check the U709 Check the 16bit data signal memory CE Yes ...

Page 24: ...C301 R311 10K HD 10 HD 11 HD 11 HD 12 HD 12 HD 13 HD 13 HD 14 HD 14 HD 15 HD 15 HD 1 HD 1 HD 2 HD 2 HD 3 HD 3 HD 4 HD 4 HD 5 HD 5 HD 6 HD 6 HD 7 HD 7 HD 8 HD 8 HD 9 HD 9 ADVn 26M_DIGI T CLKBURST HD 0 HD 0 HD 10 RSTEXTn CS1n_RAM RSTON LCD_RESET HA 1 24 HA 24 OEn CS0n_FLASH OEn WEn CS4n_NAND BE1n HA 0 WEn CLKBURST RSTEXTn ADVn CS2n_FLASH HA 7 HD 0 15 HA 8 HA 9 HA 10 HA 11 HA 12 HA 13 HA 14 HA 15 HA ...

Page 25: ...ut Samsung s authorization 7 5 7 3 Charging Part Check the U505 pin 1 4 9V Abnormal charging part END No Yes U505 pin 5 L No Yes U505 pin 3 L No Yes Check the U505 pin 10 4 2V No Yes Check the circuit related to V_EXT_CHARGE Resolder or replace U505 Check the circuit related to AUX_ON signal Resolder or replace U505 Yes ...

Page 26: ... without Samsung s authorization Flow Chart of Troubleshooting 7 6 R516 R512 VBUS VDD_IO_HIG H R515 C502 C503 ZD501 ZD500 R509 VBAT 3 _PPR R510 1 11 GND GND 8 9 ICDL 6 IMIN US B 2 USBO N 7 _CH G 4 _EN5 T U505 BAT 10 CRD L C50 1 V_EXT_CHARGE AUX_ON MES_BATT USB_CHG_ON END_OF_CHG CHG_ON ...

Page 27: ...d without Samsung s authorization 7 7 7 4 Sim Part SIM400 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 SIM400 in a few second Yes No Replace PBA After SIM card insert SIM400 pin 2 H SIM_RST Yes ...

Page 28: ...2 SIMIOHC 9 SIMVCC 41 VBAT 31 VCHG 28 RF12VBAT 23 22 RF1VDD RF2VDD 24 SCL 2 SC N 38 SCP 37 SDA 3 SIMCKCD MICBIAS 12 NC 53 54 NC OSCI 26 OSCO 25 PWREN1 6 PWREN2 5 REFC 48 GPO2 47 46 GPO3 18 HCVBAT HCVDD 17 IOD2VBAT 15 14 IOVDD 20 LPD1VBAT LPVDD 19 D1VDD 21 16 D2VDD D3VDD 39 GND 49 50 GND GND 51 52 GND GPO1 U403 CHGCUR BATMAX 34 CHGDRV 33 CLK32K 4 CPVBAT 36 CPVDD 35 VDD_IO_LOW C40 6 C422 22UF VDD_IO...

Page 29: ...without Samsung s authorization 7 9 7 5 Microphone Part Check the connection from MIC Check the circuit from U200 to MIC Resolder MIC Resolder the C603 C607 R601 R604 R630 R631 END No Yes Yes Yes Yes No Check U601 U602 PIN 1 H No Check the JACK_EN signal Microphone does not work Yes Check the MIC No Replace the MIC ...

Page 30: ...t of Troubleshooting 7 10 MICROPHONE Close to MCP Close to microphone R631 C610 C605 3 IN 1 4 NC 6 NO 2 V U603 DG2011 COM 5 GND C606 C607 MIC_BIAS R603 MIC600 C626 C627 U704 C602 C601 R630 R601 R604 C635 R606 C600 ZD602 ZD603 GND 1 IN NC 4 NO 6 V 2 DG2011 U601 5 COM 3 R607 C603 MIC_BIAS C611 MIC_BIAS MIC_CP MIC_P MIC_N JACK_EN ...

Page 31: ...Part Melody U302 pin 5 2 9V Speaker does not work Check the Clock signal at Pin 1 of U303 26MHz Check the clock generation circuit related to U100and U303 No Yes No Resolder or replace U302 Yes U303 pin 17 18 1 8V When U303 operate Resolder U303 No Yes END Is Speaker working Change the Speaker No Yes Yes CN703 pin 40 42 1 8V When U303 operate Resolder CN703 No Yes ...

Page 32: ...T1 17 18 SPOUT2 SPVDD 15 16 SPVSS VDD 7 VREF 9 VSS 35 G G 36 10 HPOUT L MONO HPOUT R 11 32 IOVDD 2 LED MTR 19 NC 5 22 D5 D6 21 20 D7 12 EQ1 EQ2 13 14 EQ3 33 G G 34 A0 30 CLKI 1 27 D0 D1 26 D2 25 24 D3 D4 23 U303 R303 VCC_SYN C336 C303 C312 R305 NC OUT 4 VCC 5 R301 U302 GND 3 IN 2 1 R306 C304 C308 C309 C305 VDD_IO_HIGH AMP_N AMP_P 26M_DIGI T EARP_HF ANR VBAT ANL HD 1 HD 0 WEn CS5n_MELODY HA 1 OEn H...

Page 33: ...ing This Document can not be used without Samsung s authorization 7 13 7 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 ...

Page 34: ...EY KEY_MAP DIGIT6 12 2 RIGHT 12 DIGIT0 1 V708 V709 V712 SHARP1 12 SOFT1 12 DIGIT1 12 2 STAR1 12 DIGIT9 1 12 V710 DIGIT2 SOFT2 12 12 SEND 12 V701 INT V702 2 DIGIT8 1 V711 END 12 12 DIGIT3 12 12 DIGIT7 2 DOW N DIGIT4 12 UP 1 LEFT 12 CLR 12 12 DIGIT5 KEY_ROW 2 KEY_ROW 3 ONKEYN KEY_COL 3 KEY_COL 2 KEY_COL 1 KEY_COL 0 4 KEY_ROW 0 4 KEY_COL 0 KEY_ROW 4 KEY_COL 4 KEY_ROW 0 KEY_ROW 1 ...

Page 35: ...eceiver Part U608 pin 2 10 1 5V Resolder U200 or change PBA END No Yes Yes Receiver does not work SPK PAD 1 5V Change the LCD Module No Yes Is Receiver working Replace the Speaker No Yes No Resolder or replace U608 Yes No change U200 CN703 pin 40 42 1 5V Yes Check the soldering of the spaeaker wire No Modify the speaker wire soldering Yes U608 pin 4 16 1 5V ...

Page 36: ...t Samsung s authorization Flow Chart of Troubleshooting 7 16 NC NC 22 V 14 11 4S2 13 16 D1 D2 4 8 D3 12 D4 GND 6 GND 17 21 2 1S1 15 1S2 1 3 2S1 2S2 5 10 3 4IN 7 3S1 3S2 9 4S1 U608 1 2IN VBAT AMP_P HFR_N EXTSPK_E N AMP_P EAR2 AMP_N HFR_N SPK_P EARSPK_R EARSPK_COM SPK_N MELODY_SE L HFR_P AMP_N ...

Page 37: ...n not be used without Samsung s authorization 7 17 7 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 CN703 pin 24 H Replace the PBA No Yes CN703 pin 46 H Replace the PBA No Yes Yes Replace the LCD Module ...

Page 38: ... the U200 related to VDD_KEY END No Yes Yes Main Key LED does not work LED603 LED613 LED612 LED610 LED605 LED614 VBAT 56 R61 9 R610 56 56 R62 0 LED601 R621 56 LED602 56 R615 56 R622 R616 LED606 56 R633 56 LED616 LED609 R618 56 R61 3 56 56 R609 56 R614 LED604 LED617 LED60 7 R612 56 LED615 LED608 R617 56 R623 56 56 R611 C613 R624 56 CE 6 GND 2 5 GND NC 4 VDD 1 VOUT 3 LED611 U604 KEY_LED_ON ...

Page 39: ...out Samsung s authorization 7 19 7 11 Camera part Camera function does not work Yes No Reconnect the camera module Check the Camera connector on LCD Module Yes CN703 pin 41 H No Reconnect CN703 Yes C315 26MHz No Check U302 pin2 pin4 related to 26Mhz and R315 Yes Is there another problem END Replace the camera module Yes ...

Page 40: ...J9 M6 LREN J8 LD11 H8 LD12 G9 LD13 G8 LD14 F9 LD15 F8 LD16 M3 M4 LD17 LD2 C2 B2 GPIO7 MD17 GPIO8 MD16 B1 HREF A9 LCS1 K6 L6 LCS2 M10 LD0 LD1 M9 LD10 J10 DVSS K2 L5 DVSS E9 GPIO0 D10 GPIO1 GPIO2 D8 GPIO4 C5 C4 GPIO5 GPIO6 DVSS DVSS B3 A7 DVSS DVSS D3 C9 DVSS DVSS F3 F10 DVSS DVSS H9 DVSS B4 A4 DI 2 DI 3 B5 A5 DI 4 DI 5 B6 A6 DI 6 DI 7 B7 C8 DVSS2 M8 CLKI G10 H10 CLKO C6 CVDD E10 CVDD L4 CVDD L7 CVD...

Page 41: ...m Resolder CN101 C101 END No Yes RX ON RF input CH center freq 67 7kHz Amp 50dBm Check MODULE1 pin9 pin10 pin12 L U100 pin1 2 68dBm U100 pin H8 J8 H7 J7 1V U100 pin E1 70dBm pin F1 70dBm Check ANT Switch control circuit Resolder MODULE1 Resolder C144 C115 L112 R135 C157 C123 2 7V Check Resolder U100 R111 RF26MHz RF PSU Part Resolder U100 Yes Yes Yes Yes Yes Yes No No No No No Check U200 ...

Page 42: ...in9 12 L MODULE1 pin11 18dBm U702 pin8 18dBm U702 pin7 15dBm U702 pin7 11dBm Change or Resolder MODULE1 Check ANT Switch control circuit Resolder C141 C166 C152 Resolder R146 R101 R102 R108 U100 pin H8 J8 H7 J7 1V Yes Check U702 pin 5 OK Resolder or Change U702 Check VBAT or PAM control signal Check Resolder RFLO signal RF13MHz RF PSU Part Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No...

Page 43: ...Resolder CN101 C101 END No Yes RX ON RF input CH center freq 67 7kHz Amp 50dBm Check MODULE1 pin9 pin10 pin12 L U100 pin3 4 68dBm U100 pin H8 J8 H7 J7 1V U100 pin C1 70dBm pin D1 70dBm Check ANT Switch control circuit Resolder MODULE1 Resolder C144 C111 L104 103 R135 C157 C123 2 7V Check Resolder U100 R111 RF26MHz RF PSU Part Resolder U100 Yes Yes Yes Yes Yes Yes No No No No No Check U200 ...

Page 44: ... pin9 10 L MODULE1 pin13 18dBm U702 pin9 18dBm U702 pin1 15dBm U702 pin1 11dBm Change or Resolder MODULE1 Check ANT Switch control circuit Resolder L118 R144 C154 Resolder R106 R107 R108 U100 pin H8 J8 H7 J7 1V Yes Check U702 pin 5 OK Resolder or Change U702 Check VBAT or PAM control signal Check Resolder RFLO signal RF13MHz RF PSU Part Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No EN...

Page 45: ...solder CN101 C101 END No Yes RX ON RF input CH center freq 67 7kHz Amp 50dBm Check MODULE1 pin9 H pin10 pin12 L U100 pin5 6 68dBm U100 pin H8 J8 H7 J7 1V U100 pin A1 70dBm pin B1 70dBm Check ANT Switch control circuit Resolder MODULE1 Resolder C143 L101 L102 C142 R135 C157 C123 2 7V Check Resolder U100 R111 RF26MHz RF PSU Part Resolder U100 Yes Yes Yes Yes Yes Yes No No No No No Check U200 ...

Page 46: ... pin9 10 L MODULE1 pin13 18dBm U702 pin9 18dBm U702 pin1 15dBm U702 pin1 11dBm Change or Resolder MODULE1 Check ANT Switch control circuit Resolder L118 R144 C154 Resolder R106 R107 R108 U100 pin H8 J8 H7 J7 1V Yes Check U702 pin 5 OK Resolder or Change U702 Check VBAT or PAM control signal Check Resolder RFLO signal RF13MHz RF PSU Part Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No EN...

Page 47: ... 2 NC A1 PCSLNAI A2 GND R108 C134 100N F 4 6 VRAMP C157 1 DCS PCSI N 9 DCS PCSOUT 10 GND GND 5 GSMI N 7 8 GSMOUT 3 TXEN VBATT U702 2 BAND C154 R119 C148 R139 0 R111 R117 L104 R144 L103 C155 C170 C141 C122 VDD_IO_HIG H C150 C138 10N F U705 R148 R107 TP102 C129 C156 R146 R123 0 C161 C121 R103 ANT101 C151 ANT100 R116 C165 VCC_SYN C153 C14 6 C16 2 R102 C115 L112 C144 C112 L118 C152 L121 R143 VDD_RX_TX...

Page 48: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 28 ...

Reviews:

No comments

Brands by name

Popular brands

Load more brands