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Samsung SGH-E720 Service Manual

Gsm telephone
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GSM TELEPHONE
GSM TELEPHONE
SGH-E720
CONTENTS
1.
Specification
2.
Flow Chart of Troubleshooting
3.
Exploded Views and Parts List
4.
Electrical Parts List
5.
PCB Diagrams
6.
Block Diagrams

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Summary of Contents for Samsung SGH-E720

  • Page 1 GSM TELEPHONE SGH-E720 GSM TELEPHONE CONTENTS Specification Flow Chart of Troubleshooting Exploded Views and Parts List Electrical Parts List PCB Diagrams Block Diagrams...

  • Page 2: Gsm General Specification

    S e nsi ti vit y -102dBm - 10 2d B m -100dBm -100dBm TDM A Mu x Cell Radiu s 35 Km 35 Km SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 3: Gsm Tx Power Class

    4 ± 4 dBm 4 ± 4 dBm 5 ± 3 dBm 2 ± 5 dBm 2 ± 5 dBm 0 ± 5 dBm 0 ± 5 dBm SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 4 Check U401 and C420 Check the clock signal Check the clock generation at pin #3 of OSC101 circuit (OSC101, F100 pin#4) Freq.=13MHz,Vrms ≥ 300mV Check the Initial operation SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 5 G16 OSC32OUT VDD_IO_1P8_2 B6 P15 PIO19_PWRKEEP VDD_IO_1P8_1 B4 VRTC G18 PIO20_SYSCLKREQ PWM1_PIO46 PIO10 RESTN G15 V19 PIO25 U16 PIO26 TRSTN R12 PIO27 PIO28 PIO32 F200 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 6 The voltage is 2.8V Check the U401 at the C416,C418,C419 ? LCD Display OK ? Check the LCD part Sound operation OK ? Check the Audio part SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 7 PWR_SW2 JIG_ON VDD1 J3 PWR_SW1N PWR_ON GND_HCUR F11 PSW1_BUF PSW1_BUF GND_PSC2 K15 RESET_O GND_PSC1 B15 MODE GNDQ E8 PWR_KEEP VDD67 B13 INTRQ VDD5 C10 VIB_RNG_EN SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 8: Sim Part

    Check the U401 at the pin #1 of CN401? Is there any signal Check the U401 & U201 pin #2,3,4 of CN401 ? Check the SIM Card SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 9: Microphone Part

    Check the DC bias voltage on Mic path. Solder the microphone again The voltage of C437 is or Replace about 2.2V ± 10%? C437,C438,R428,R430,R433 Is microphone OK? Check U401 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 10 SGH-E720 Flow Chart of Troubleshooting V403 D(2) /RST CLKI D(3) V404 D(4) /IRQ D(5) D(6) D(7) PLLC V400 VIB_EN SPOUT2 MSPK+ V401 SPOUT1 MSPK- VREF ZD402 ZD406 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 11: Speaker Part

    Pin #2 of U403 U401, is High? is Low? U201 Pin 14 of U403 Check U403 is 3.3V? Pin 3 of U303 Check U303 is High? Check U401 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 12: Camera Part

    Pin#1 of Q301 = Low? Q301 Is that clock signal at the Check pin #30 of CN507? U201 Check Pin#56 of CN507 is High? U300 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 13 C_D2 D1 D(15) M_CS_N C_D1 A8 M_RD_N C_D0 D3 M_WR_N C_SCK C7 M_INTR C_SDA C2 M_HOLE C_PCLK M_RESET_N C_RST A3 MS_CS_N C_HS C3 C_VS C_MCLK 2-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 14: Mp3 Display Part

    Pin 2 of U302 Check U401 The voltage of C344 is High? is 2.5V? Check Check U201 U302 Check the U301 Check the U300 Check the U201 2-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 15 8 OUT2 CAM_D(5) CAM_DA(5) 8 OUT2 CAM_D(1) CAM_DA(1) 7 OUT3 CAM_D(6) CAM_DA(6) 7 OUT3 CAM_D(2) CAM_DA(2) OUT4 CAM_D(7) CAM_DA(7) OUT4 CAM_D(3) CAM_DA(3) GNDG ND 2-12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 16 Pin #3 : 13MHz ? Pin #4 = 2.8V ? Vpp : 860mV? Vpp : 950mV? U103 R112,C132 OSC101 Change or resolder resolder Change or resolder Check U401 2-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 17 Pin #3 : 13MHz ? Vpp : 860mV? Pin #4 = 2.8V ? Vpp : 950mV? U103 R112,C132 OSC101 Change or resolder resolder Change or resolder Check U401 2-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 18 Pin #3 : 13MHz ? Pin #4 = 2.8V ? Vpp : 860mV? Vpp : 950mV? U103 R112,C132 OSC101 Check U401 Change or resolder resolder Change or resolder 2-15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 19 Pin #4 = 2.8V ? Vpp : 860mV? Vpp : 950mV? OSC101 R112,C132 U103 Pin Change or resolder resolder #4,5,6,7 = 1.7V? Change U101 Check U401 2-16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 20 Pin #4 = 2.8V ? Vpp : 860mV? Vpp : 950mV? OSC101 R112,C132 U103 Pin Change or resolder resolder #4,5,6,7 = 1.7V? Change U101 Check U401 2-17 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 21 SCLK DIAG2 DIAG1 RFOG RFOD 21 GND VAPC GND 7 19 RSVD ENABL E GND 9 VBATT GND 10 14 13 12 C108 R123 2-18 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 22: Cellular Phone Exploded View

    QKP01 QME03 QGI02 QMP01 QLC01 QME01 QSP01 QCA01 QMO01 QAN02 QMI01 QCR05 QCK01 QFL01 QRF03 QRE01 QIF01 QCR05 QVO01 QSC05 QSC08 QMW01 QRF01 QCR05 QBA01 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 23: Cellular Phone Parts List

    EAR COVER GH72-17957A QVO01 KEY VOLUME GH75-05917A QCK01 KEY CAMERA GH75-05918A QIF01 IF COVER GH72-17956A QRF01 RF SHEET GH74-11931A QCR05 SCREW MACHINE 6001-001478 QBA01 BATTERY GH43-01572A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 24: Test Jig

    3-3. Test Jig (GH80-03307A) 3-3-1. RF Test Cable 3-3-2. Test Cable 3-3-3. Serial Cable (GH39-00283A) (GH39-00304A) 3-3-4. Power Supply Cable 3-3-5. DATA CABLE 3-3-6. TC (GH39-00279A) (GH44-00701A) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 25 C448 1201-002007 U305 2203-000836 C452 1201-002218 U101 2203-000836 C465 1203-002099 U105 2203-000836 C466 1203-002965 U303 2203-000836 C469 1203-003322 U302 2203-000836 C472 1203-003472 U401 2203-000854 C435 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 26 C412 1405-001082 V511 2203-005061 C422 1405-001082 V512 2203-005061 C424 1405-001082 V514 2203-005061 C428 1405-001132 V101 2203-005288 C111 1405-001132 V102 2203-005288 C113 2007-000138 R112 2203-005482 C137 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 27 C451 2007-000159 R457 2203-005509 C519 2007-000162 R201 2203-005736 C101 2007-000162 R202 2203-005736 C110 2007-000162 R204 2203-005736 C112 2007-000162 R242 2203-006053 C326 2007-000162 R319 2203-006053 C328 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 28 C359 2007-001307 R312 2203-006190 C360 2007-001307 R313 2203-006190 C363 2007-001307 R314 2203-006190 C364 2007-001307 R316 2203-006194 C457 2007-001307 R356 2203-006201 C404 2007-001307 R357 2203-006257 C438 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 29 F505 2007-008531 R355 2904-001417 F103 2007-008542 R205 2904-001419 F102 2007-009124 R330 2904-001450 F101 2007-009124 R331 2909-001213 U106 2203-000233 C105 3301-001342 F104 2203-000233 C128 3301-001342 F200 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 30 M400 2203-000254 C202 4709-001350 U104 2203-000254 C203 GH09-00033A U201 2203-000254 C207 GH41-00757A PCB-SGHE720 MAIN 2203-000254 C209 GH30-00181A MICROPHONE-ASSY 2203-000254 C222 GH59-01799A UNIT-METAL DOME 2203-000254 C223 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 31 TH10 1 TP10 1 CN40 1 Q20 0 U20 4 ANT10 1 U30 4 U10 5 U30 3 Q30 5 ZD50 0 ZD40 5 CN50 4 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 32 V31 0 V30 8 CLEAR V30 9 V30 1 GND1 DS P_RWN DSP_TDO DSP_TCK DSP_TMS V30 2 V30 3 DSP_TDI SHARP V30 4 V30 5 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 33: Block Diagram

    CLK13M_MC CODEC VCAM_EN MIC2211 24.578 CLK13M_RF CLK13M_YMU MIC5247 Sound Gen. AUDIO(MIC) YMU765 V_BAT 1.8V_VCAM 2.5V_VCAM 13MHz SPEAK MP3(SPK) VOICE CODEC EAR_JACK Analog Switch MAX4684 MP3(EAR) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 34 ⓒ Samsung Electronics Co.,Ltd. MAR. 2005 Printed in Korea. This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable Code No.: GH68-06398A International and/or domestic law. BASIC.

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