Samsung SGH-E350 Service Manual Download

Page: 1 / 60

SGH-E350

SERVICE

Manual

GSM TELEPHONE

CONTENTS

Specification

Circuit Description

Exploded Views and Parts List

Electrical Parts List

Block Diagrams

PCB Diagrams

Flow Chart of Troubleshooting

GSM TELEPHONE

Summary of Contents for SGH-E350

Page 1: ... SERVICE Manual 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 GSM TELEPHONE ...

Page 2: ...Electronics Co Ltd MAY 2005 Printed in Korea Code No 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: ...S1800 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 30d...

Page 4: ...Bm 11 8 4dBm 12 6 4 dBm 13 4 4 dBm 14 2 5 dBm 15 0 5 dBm 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: ...NSCEIVER 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...

Page 6: ...sure proper system behavior during start up or in the event of a fault condition low microprocessor voltage insufficient battery energy or excessive die temperature 1 2 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 backligh...

Page 7: ... IC stop charging process 8 Audio HFR_P and HFR_N from PCF5213EL1 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 built in speaker amplifier for outputting sounds that are used by mobile phones in addition to game sounds and ringing melodie...

Page 8: ...unicate 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 and DSP core ADC Analog to Digital Convertor receives the condition of temperature battery type and battery voltage 1...

Page 9: ...iew and its Parts list 3 1 This Document can not be used without Samsung s authorization 1 Exploded View QFU01 QKP02 QMP02 QFL01 QCR05 QSC01 QSP01 QMO01 QME02 QLC01 QVK01 QAN02 QRF01 QRF03 QVO01 QCW01 QFR01 QKP01 QMP01 QRE01 QCK01 QCA01 QIF01 QCR06 QBA01 QMI01 QCA02 QME01 QPC01 ...

Page 10: ...MEC KEYPAD MAIN SGH E350 EU GH75 07285A QKP02 ㅤ MEC KEYPAD SUB SGH E350 EU B GH75 07284A QLC01 ㅤ LCD SGHE350 LTS166QQ F02 SGH E350 12 GH07 00729A QME01 ㅤ UNIT METAL DOME MAIN SGH E350 SGH E GH59 02182A QME02 ㅤ UNIT METAL DOME SUB SGH E350 SGH E3 GH59 02181A QMI01 ㅤ MICROPHONE ASSY SGHE350 1 130to500uA GH30 00203A QMO01 ㅤ MOTOR DC SGHE350 JHV 10A1 F13 SGH E3 GH31 00176A QMP01 ㅤ PBA MAIN SGHE350EDGE...

Page 11: ...GH69 03026A PMO BATT LOCKER SGH E350 PC G6656 S GH72 20662A RMO RUBBER BGA 1 SGH E350 CR RUBBER GH73 05089A RMO RUBBER BGA 2 SGH E350 CR RUBBER GH73 05090A RMO RUBBER BGA 3 SGH E350 CR RUBBER GH73 05091A MPR TAPE SUB FPCB SGH E350 3M 851 28 GH74 16170A MPR TAPE LCD FPCB CONN SGH E350 3M 8 GH74 16171A MPR TAPE MAIN FPCB BASE SGH E350 PET GH74 16218A MPR TAPE MAIN FPCB SGH E350 3M 851 2 GH74 16219A ...

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

Page 13: ...TR DIGITAL 0504 001151 U502 TR DIGITAL 0601 001754 LED600 LED 0601 001754 LED601 LED 0601 001754 LED602 LED 0601 001754 LED603 LED 0601 001754 LED604 LED 0601 001754 LED605 LED 0601 001754 LED606 LED 0601 001754 LED607 LED 0604 001291 U301 PHOTO IRDA 0801 002958 U302 IC CMOS LOGIC 0801 002970 U703 IC CMOS LOGIC 1009 001020 U607 IC HALL EFFECT S W 1201 002223 U101 IC POWER AMP 1202 001068 U600 IC V...

Page 14: ...OR 1405 001082 V705 VARISTOR 1405 001082 V706 VARISTOR 1405 001110 V603 VARISTOR 1405 001110 V604 VARISTOR 1405 001110 V707 VARISTOR 1405 001110 V708 VARISTOR 1405 001110 V709 VARISTOR 1405 001110 V710 VARISTOR 1405 001110 V711 VARISTOR 1405 001110 V712 VARISTOR 2007 000070 R303 R CHIP 2007 000137 R507 R CHIP 2007 000137 R600 R CHIP 2007 000137 R602 R CHIP 2007 000138 R115 R CHIP 2007 000138 R517 ...

Page 15: ...7 000151 R305 R CHIP 2007 000152 R519 R CHIP 2007 000156 R511 R CHIP 2007 000162 R201 R CHIP 2007 000162 R207 R CHIP 2007 000162 R211 R CHIP 2007 000162 R212 R CHIP 2007 000162 R213 R CHIP 2007 000162 R214 R CHIP 2007 000162 R215 R CHIP 2007 000162 R306 R CHIP 2007 000162 R311 R CHIP 2007 000162 R401 R CHIP 2007 000162 R405 R CHIP 2007 000162 R501 R CHIP 2007 000162 R503 R CHIP 2007 000162 R509 R ...

Page 16: ...7 000171 R113 R CHIP 2007 000171 R114 R CHIP 2007 000171 R116 R CHIP 2007 000171 R117 R CHIP 2007 000171 R118 R CHIP 2007 000171 R120 R CHIP 2007 000171 R202 R CHIP 2007 000171 R300 R CHIP 2007 000171 R310 R CHIP 2007 000171 R319 R CHIP 2007 000171 R403 R CHIP 2007 000171 R404 R CHIP 2007 000171 R406 R CHIP 2007 000171 R407 R CHIP 2007 000171 R515 R CHIP 2007 000171 R516 R CHIP 2007 000171 R520 R ...

Page 17: ...7 007009 R616 R CHIP 2007 007009 R618 R CHIP 2007 007009 R619 R CHIP 2007 007013 R706 R CHIP 2007 007014 R314 R CHIP 2007 007014 R316 R CHIP 2007 007100 U704 R CHIP 2007 007310 R700 R CHIP 2007 007334 R510 R CHIP 2007 007480 R610 R CHIP 2007 007489 R512 R CHIP 2007 007573 R508 R CHIP 2007 007573 R606 R CHIP 2203 000233 C122 C CER CHIP 2203 000233 C139 C CER CHIP 2203 000233 C300 C CER CHIP 2203 00...

Page 18: ...0278 C626 C CER CHIP 2203 000311 C506 C CER CHIP 2203 000438 C138 C CER CHIP 2203 000438 C140 C CER CHIP 2203 000438 C304 C CER CHIP 2203 000438 C318 C CER CHIP 2203 000438 C321 C CER CHIP 2203 000438 C627 C CER CHIP 2203 000585 C123 C CER CHIP 2203 000628 C127 C CER CHIP 2203 000628 C130 C CER CHIP 2203 000628 C132 C CER CHIP 2203 000628 C135 C CER CHIP 2203 000654 C120 C CER CHIP 2203 000654 C13...

Page 19: ...2668 C103 C CER CHIP 2203 002668 C113 C CER CHIP 2203 002668 C118 C CER CHIP 2203 003054 C407 C CER CHIP 2203 003054 C410 C CER CHIP 2203 003054 C621 C CER CHIP 2203 003054 C628 C CER CHIP 2203 003054 C629 C CER CHIP 2203 005056 C606 C CER CHIP 2203 005056 C616 C CER CHIP 2203 005288 C104 C CER CHIP 2203 005288 C119 C CER CHIP 2203 005288 C121 C CER CHIP 2203 005480 C315 C CER CHIP 2203 005480 C40...

Page 20: ...5482 C503 C CER CHIP 2203 005482 C504 C CER CHIP 2203 005482 C603 C CER CHIP 2203 005482 C604 C CER CHIP 2203 005482 C609 C CER CHIP 2203 005482 C613 C CER CHIP 2203 005482 C624 C CER CHIP 2203 005482 C625 C CER CHIP 2203 005482 C703 C CER CHIP 2203 005482 C706 C CER CHIP 2203 005482 C712 C CER CHIP 2203 005482 C715 C CER CHIP 2203 005482 C716 C CER CHIP 2203 005482 C719 C CER CHIP 2203 005496 C11...

Page 21: ...203 006257 C400 C CER CHIP 2203 006257 C403 C CER CHIP 2203 006257 C408 C CER CHIP 2203 006257 C416 C CER CHIP 2203 006257 C417 C CER CHIP 2203 006257 C424 C CER CHIP 2203 006257 C620 C CER CHIP 2203 006257 C622 C CER CHIP 2203 006257 C708 C CER CHIP 2203 006257 C709 C CER CHIP 2203 006257 C717 C CER CHIP 2203 006257 C718 C CER CHIP 2203 006257 C720 C CER CHIP 2404 001225 C303 C TA CHIP 2404 00122...

Page 22: ...01294 U102 OSCILLATOR VCTCXO 2901 001283 F500 FILTER EMI SMD 2901 001319 F700 FILTER EMI SMD 2901 001319 F701 FILTER EMI SMD 2901 001319 F702 FILTER EMI SMD 2901 001319 F703 FILTER EMI SMD 2901 001319 F704 FILTER EMI SMD 2901 001319 F705 FILTER EMI SMD 2901 001319 F706 FILTER EMI SMD 2901 001322 F501 FILTER EMI SMD 2901 001322 F502 FILTER EMI SMD 3301 001120 L400 BEAD SMD 3301 001534 L600 BEAD SMD...

Page 23: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization 5 SGH E350 Block Diagrams 5 1 1 RF Solution Block Diagram ...

Page 24: ...SAMSUNG Proprietary Contents may change without notice Block Diagrams This Document can not be used without Samsung s authorization 5 2 2 Base Band Solution Block Diagram ...

Page 25: ...SAMSUNG Proprietary Contents may change without notice 6 SGH E350 PCB Diagrams 6 1 This Document can not be used without Samsung s authorization 1 MAIN PCB Top Diagram ...

Page 26: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 6 2 This Document can not be used without Samsung s authorization 2 MAIN PCB Bottom Diagram ...

Page 27: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 2 3 This Document can not be used without Samsung s authorization 3 SUB Top Diagram ...

Page 28: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 6 4 This Document can not be used without Samsung s authorization 4 SUB Bottom Diagram ...

Page 29: ...V Power On does not work Change the Battery END No Yes C408 VINT 2 7V Check the PMU related to VINT No Yes Check the Clock at U704 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 C300 26MHz Check the clock generation circuit related to U100 No Yes Check the initial o...

Page 30: ...HC SIMIOCD 9 SIMIOHC 41 SIMVCC 31 VBAT 32 VCHG 29 VINT 30 VSAVE 10 _IRQ 2 SCL 38 SCN 37 SCP 3 SDA 43 SIMCKCD 8 SIMCKHC 40 SIMD3VBAT 45 SIMEN 42 OSCI 25 OSCO 6 PWREN1 5 PWREN2 28 REFC 23 RF12VBAT RF1VDD 22 24 RF2VDD 17 HCVDD 15 IOD2VBAT IOVDD 14 LPD1VBAT 20 19 LPVDD 12 MICBIAS 53 NC NC 54 26 49 GND GND 50 51 GND GND 52 48 GPO1 47 GPO2 46 GPO3 HCVBAT 18 CHGCUR BATMAX 33 CHGDRV 4 CLK32K 36 CPVBAT 35 ...

Page 31: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 3 ...

Page 32: ...cument can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 4 2 Initial U201 pin 2 RSTON H Initial Failure Check the circuit related to reset END No Yes Is U304 pin 4 OK Yes Yes No Check the U304 Check the 16bit data signal memory CE Yes ...

Page 33: ...14O G4 DNU A12 R1 DNU R2 DNU R3 DNU DNU R10 DQ0O M3 DQ0RU M5 DQ10O K3 E5 CLKO E6 CLKRU A2 DNU R11 DNU DNU R12 A3 DNU DNU A10 A11 DNU E3 A6RU F11 A7O C4 A7RU A8O J11 F8 A8RU J10 A9O A9RU C9 H10 AVDO D2 A2RU F10 A3O E2 A3RU A4O E11 C3 A4RU H9 A5O A5RU D3 A6O G10 A19RU E8 G8 A1O C2 A1RU D8 A20RU A21RU D6 C11 A22RU A23R D12 A2O G9 A13RU E10 A14O K8 D11 A14RU L10 A15O A15RU C10 G7 A16RU A17RU B4 D4 A18...

Page 34: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 6 ...

Page 35: ...out Samsung s authorization 7 7 3 Charging Part Check the U501 pin 1 4 9V Abnormal charging part END No Yes U501 pin 5 L No Yes U501 pin 3 L No Yes Check the U501 pin 10 4 2V No Yes Check the circuit related to V_EXT_CHARGE Resolder or replace U501 Check the circuit related to AUX_ON signal Resolder or replace U501 Yes ...

Page 36: ...amsung s authorization Flow Chart of Troubleshooting 7 8 BATTERY CHARGING R507 R511 R512 R510 C501 C503 ZD500 R508 IMIN 6 2 USB 7 USBON 4 _CHG _EN 5 _PPR 3 C502 U501 BAT 10 1 CRDL GND 11 8 GND ICDL 9 VBAT C505 ZD501 VDD_IO_HIGH_2 9V V_EXT_CHARGE CHG_ON END_OF_CHG USB_CHG_ON AUX_ON VBUS MES_BATT ...

Page 37: ...ed without Samsung s authorization 7 9 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 38: ...SHC SIMIOCD 9 SIMIOHC 41 SIMVCC 31 VBAT 32 VCHG 29 VINT 30 VSAVE 10 _IRQ 2 SCL 38 SCN 37 SCP 3 SDA 43 SIMCKCD 8 SIMCKHC 40 SIMD3VBAT 45 SIMEN 42 OSCI 25 OSCO 6 PWREN1 5 PWREN2 28 REFC 23 RF12VBAT RF1VDD 22 24 RF2VDD 17 HCVDD 15 IOD2VBAT IOVDD 14 LPD1VBAT 20 19 LPVDD 12 MICBIAS 53 NC NC 54 26 49 GND GND 50 51 GND GND 52 48 GPO1 47 GPO2 46 GPO3 HCVBAT 18 CHGCUR BATMAX 33 CHGDRV 4 CLK32K 36 CPVBAT 35...

Page 39: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 11 ...

Page 40: ...ization Flow Chart of Troubleshooting 7 12 5 Microphone Part Check the connection from MIC Check the circuit from U200 to MIC Resolder MIC Resolder the C603 C609 R600 R602 R603 END No Yes Yes Yes Yes No Check U601 PIN 8 H No Check the JACK_EN signal Microphone does not work Yes Check the MIC No Replace the MIC ...

Page 41: ... 7 13 MICROPHONE Close to MCP C608 2 1 3 5 4 C606 U600 MIC_BIAS_BB R605 C601 V601 C610 R610 VDD_IO_HIGH_2 9V C617 C602 C611 C605 R602 C600 MIC_BIAS R603 C603 VDD_IO_HIGH_2 9V VCC MIC MIC600 2 1B1 1S 8 2A 6 2B0 3 4 2B1 7 2S 5 GND 10 U601 9 1A 1B0 1 R604 R600 C607 R606 V602 C631 220NF R601 C609 MIC_BIAS MIC_CP EAR_ADC JACK_EN EAR_SWITCH MIC_N MIC_P ...

Page 42: ...art Melody U302 pin 6 2 9V Speaker does not work Check the Clock signal at Pin 1 of U300 26MHz Check the clock generation circuit related to U100and U300 No Yes No Resolder or replace U302 Yes U300 pin 17 18 1 8V When U300 operate Resolder U300 No Yes END Is Speaker working Change the Speaker No Yes Yes CN700 pin 23 25 1 8V When U300 operate Resolder CN700 No Yes ...

Page 43: ...5 SPVDD SPVSS 16 7 VDD 34 G G 35 36 G HPOUT L MONO 10 11 HPOUT R IOVDD 32 LED 2 24 23 D4 D5 22 21 D6 D7 20 EQ1 12 13 EQ2 EQ3 14 G 33 U300 30 A0 1 CLKI D0 27 26 D1 25 D2 D3 C312 C310 VDD_IO_HIGH_2 9V C308 C304 C313 VDD_IO_LOW_1 9V EARP_HF VCC_AUDIO_BAT ANL ANR AMP_N AMP_P HD 1 HD 0 WEn CS5n_MELODY HA 1 OEn HD 2 26M_YMU762 HD 3 HD 4 M_INT HD 5 RSTON HD 6 HD 7 VIB RF 26M TERMINATION BUFFER R314 R315 ...

Page 44: ...used without Samsung s authorization Flow Chart of Troubleshooting 7 16 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 45: ...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 46: ...eceiver Part U604 pin 7 8 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 U604 Yes No change U200 CN700 pin 23 25 1 5V Yes Check the soldering of the spaeaker wire No Modify the speaker wire soldering Yes U604 pin 7 8 1 5V ...

Page 47: ...thout notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 19 6 2A 3 2B0 2B1 4 2S 7 5 GND VCC 10 U604 1A 9 1B0 1 2 1B1 8 1S VCC_AUDIO_BAT HFR_N SPK_N MELODY_SEL HFR_P AMP_P SPK_P MELODY_SEL AMP_N ...

Page 48: ...Flow Chart of Troubleshooting 7 20 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 CN800 pin 14 H Change the board to board FPCB No Yes U800 PIN 1 7V Check the U800 the related circuit No Yes Yes Replace the LCD Module ...

Page 49: ...thorization 7 21 10 Key Back Light U606 pin3 H Check the U200 related to VDD_KEY END No Yes Yes Main Key LED does not work KEY_LED 75 R614 C622 R607 LED600 SLSNNWH113TS 75 R613 LED605 R616 75 LED601 LED603 75 R618 LED607 C620 R619 75 4 U606 GND 2 6 GND NC 5 1 STBY VIN 3 VOUT LED606 75 R612 VBAT LED602 R611 75 75 R615 LED604 KEY_LED_ON ...

Page 50: ...low Chart of Troubleshooting 7 22 11 Camera part Camera function does not work Yes No Reconnect the camera module Check the Camera connector on LCD Module Yes CN701 pin 1 H No Reconnect CN701 Yes C329 26MHz No Check U302 pin2 pin4 related to 26Mhz and R317 Yes Is there another problem END Replace the camera module Yes ...

Page 51: ...D11 LD12 G9 G8 LD13 F9 LD14 F8 LD15 LD16 GPIO4 C4 GPIO5 C2 GPIO6 B2 GPIO7 MD17 GPIO8 MD16 B1 A9 HREF K6 LCS1 LCS2 L6 LD0 H9 DVSS J10 DVSS K2 DVSS L5 DVSS E9 GPIO0 GPIO1 D10 D8 GPIO2 C5 C8 DVSS2 M8 DVSS DVSS B3 A7 DVSS DVSS D3 DVSS C9 F3 DVSS F10 DVSS DI0 A3 B4 DI1 DI2 A4 B5 DI3 DI4 A5 B6 DI5 DI6 A6 DI7 B7 G10 CLKI CLKO H10 CVDD C6 E10 CVDD L4 CVDD L7 CVDD U305 TP_D11 C309 R308 VDD_IO_LOW_1 9V C323...

Page 52: ... Resolder CN100 C102 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 C105 C114 L105 R110 C126 C129 2 7V Check Resolder U100 R113 RF26MHz RF PSU Part Resolder U100 Yes Yes Yes Yes Yes Yes No No No No No Check U200 ...

Page 53: ...n9 12 L MODULE1 pin11 18dBm U101 pin8 18dBm U101 pin7 15dBm U101 pin7 11dBm Change or Resolder MODULE1 Check ANT Switch control circuit Resolder C113 C107 C112 Resolder R106 R107 R108 R109 U100 pin H8 J8 H7 J7 1V Yes Check U101 pin 5 OK Resolder or Change U101 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 54: ...solder CN100 C102 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 C104 C103 L102 L103 R110 C126 C129 2 7V Check Resolder U100 R113 RF26MHz RF PSU Part Resolder U100 Yes Yes Yes Yes Yes Yes No No No No No Check U200 ...

Page 55: ...pin9 10 L MODULE1 pin13 18dBm U101 pin9 18dBm U101 pin1 15dBm U101 pin1 11dBm Change or Resolder MODULE1 Check ANT Switch control circuit Resolder L109 R100 C121 Resolder R103 R104 R105 U100 pin H8 J8 H7 J7 1V Yes Check U101 pin 5 OK Resolder or Change U101 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...

Page 56: ...older CN100 C102 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 C119 L107 L108 C118 R110 C126 C129 2 7V Check Resolder U100 R113 RF26MHz RF PSU Part Resolder U100 Yes Yes Yes Yes Yes Yes No No No No No Check U200 ...

Page 57: ...pin9 10 L MODULE1 pin13 18dBm U101 pin9 18dBm U101 pin1 15dBm U101 pin1 11dBm Change or Resolder MODULE1 Check ANT Switch control circuit Resolder L109 R100 C121 Resolder R103 R104 R105 U100 pin H8 J8 H7 J7 1V Yes Check U101 pin 5 OK Resolder or Change U101 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...

Page 58: ...39 R115 C103 C101 C118 J8 QOUT QIN J9 GNDMASH VDD_RX_TX_2 8V H9 LE J1 GNDLNA J2 VCCOPLL J3 VCCTXVCO J4 TXOUTD J5 TXOUTG J6 GNDTXVCOG2 J7 IOUT IIN H1 GSM0LNAIB H2 GNDOPLL H3 GNDTXVCOD H4 GNDTXVCOB H5 GNDTXVCOG1 H6 VCCTXVCOG H7 IOUTB IINB H8 QOUTB QINB F1 GSM1LNAIB F2 GSM1GSM0GND F8 CLK F9 SDATA G1 GSM0LNAI GSM0GND G2 G8 VCCMASH G9 CLKOUT1 D1 DCSLNAIB D2 DCSGSM1GND D8 DIVON D9 CLKOUT2 E1 GSM1LNAI E2...

Page 59: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 7 31 ...

Page 60: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 32 ...

Search results

Summary of Contents for SGH-E350

Reviews:

Related manuals for SGH-E350

Brands by name

Popular brands

Samsung SGH-E350, Service Manual

Search results

Summary of Contents for SGH-E350

Reviews:

Related manuals for SGH-E350

Brands by name

Popular brands