Related Manuals for Samsung SGH-X120
Summary of Contents for Samsung SGH-X120
- Page 1 GSM TELEPHONE SGH-X120 Manual SERVICE GSM TELEPHONE CONTENTS Specification Flow Chart of Troubleshooting Exploded Views and Parts Lis Electrical Parts List Block Diagram PCB Diagrams...
- Page 2 Power Cl a ss 5pcl ~ 19pcl 5pcl ~ 19pcl 0pcl ~ 15pcl Sensiti vity - 102dBm -102dBm -100dBm TDMA Mux Cel l Radi us 35Km 35Km SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 3 14±3 dBm 15±2 dBm 12±4 dBm 13±2 dBm 10±4 dBm 11±3 dBm 8±4dBm 6±4 dBm 9±3dBm 7±3 dBm 4±4 dBm 5±3 dBm 2±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 U300 and C312 Check the clock signal Check the clock generation at pin #3 of OSC100 circuit (OSC100, U105 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 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams 2. System Initial Initial Failure Check the U300 The pin #9 of U300 = 1.8V (If it has some problem, and pin #11 of U300=2.8V? it has to be replaced.) Check the U300...
- Page 6 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams 3. SIM Part "Insert SIM" is displayed on the LCD Is there any signal Check the U201 pin #52,53,54 of U300 ? Is there any signal Check the U300 pin #1,2,3,6 of CN300 ?
- Page 7 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams 4. Charging Part Abnormal charging operation The pin #17,18 of CN301 Replace TA or check CN301 (VEXT) is 5V ? Check the U302 The pin#6 OF U302 LOW? Check the U302 The pin#2 of U302 is Low?
- Page 8 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams CN300 VBAT VCC_1.8A VCCD VPAC VOSC VCCA VCCB VRTC C300 C325 C301 C302 33PF C303 33PF 33PF 100NF C304 100NF VREF VLDO_7 40 SIMRST UP_RST SIMCLK UP_CLK 52 UP_IO SIMDATA VDD67 44 ADC_AUX1...
- Page 9 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams 5. Microphone Part Micro-phone does not work Is the assembled status of Reassemble the microphone Microphone O.K? Check the DC bias voltage on Mic path. Solder the microphone again The voltage of C476 is or Replace 2.2V±10%?
- Page 10 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams 6. Speaker Part There is no sound from speaker Is the terminal of speaker Replace the speaker is O.K? The type of sound from the speaker is Melody? Are there any signal...
- Page 11 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 12 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams 7. EGSM Receiver Continuous RX ON RF Input : 62 CH AMP : -50dBm NORMAL CONDITION Check soldered status of Catch the channel ? C102 U100 Check CON101 Pin #6 ≥ -65dBm ?
- Page 13 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams 8. EGSM Transmitter U100 Pin#6 U100 U200, Q202 About 2~3 dBm? Pin#10 = High? Check & Change Level of U102, CON101 Continuous TX ON condition U100 Pin#7 is Check & Change TX Power Code : 500 code Applied...
- Page 14 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams 9. DCS Receiver Continuous RX ON RF Input : 660 CH AMP : -50dBm NORMAL CONDITION Check soldered status of Catch the channel ? C102 U100 Check CON101 Pin #6 ≥ -65dBm ?
- Page 15 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams 10. DCS Transmitter U100 Pin#6 U100 U200,Q203 About 2~3 dBm? Pin#4 = High? Check & Change C102, CON101 Level of Continuous TX ON condition Check & Change U100 Pin#5 is TX Power Code : 350 code Applied...
- Page 16 SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams VCC2 VCC2 RFOD RFOG DIAG1 SCLK DIAG2 _SEN XOUT _PDN RXQP 2-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 17 3. SGH-X120 Exploded View and its Parts list 1. Cellular phone Exploded View SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 18 SGH-X120 Exploded view and its Part list 2. Cellular phone Parts list Location Description SEC CODE Remark SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 19 3. Test Jig ( GH80-00865A ) 3-1. RF Test Cable 3-2. Test Cable 3-3. Serial Cable (GH39-00182A) (GH39-00127A) 3-4. Power Supply Cable 3-5. DATA CABLE 3-6. TA (GH39-00159A) (GH44-00482A) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 20 C410 2203-005496 C205 2203-005061 C305 2203-001598 C415 2203-000679 C206 2203-006201 C306 2203-000654 C416 2203-000254 C207 2203-005796 C307 2404-001086 C417 2203-000679 C208 2203-006201 C308 2203-005061 C418 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 21 R104 2203-001221 C457 2703-002313 L402 2007-000139 R105 2203-000812 C458 2703-002313 L403 2007-001311 R106 2203-000812 C459 2703-002313 L404 2007-000162 R107 2203-000812 C460 0601-001823 LED200 2007-000171 R108 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 22 2007-000140 R431 2007-000157 R303 2007-007008 R343 2007-007014 R433 2007-000140 R304 2007-007008 R344 2007-000171 R437 2007-000140 R305 2007-007008 R345 2007-001319 R440 2007-000140 R306 2007-007008 R346 3404-001152 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 23 ZD309 1405-001082 ZD310 1405-001082 ZD311 1405-001082 ZD312 1405-001082 ZD313 1405-001082 ZD314 1405-001082 ZD315 1405-001082 ZD316 1405-001082 ZD317 1405-001082 ZD318 0406-001169 ZD319 1405-001082 ZD320 1405-001082 ZD321 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 24 V_BOOST TX_BAND_SEL BOOST Block SW_EN LM2733XMFX C LK1 3M_ MC TX_PWR CLK13M_RF CLK13M_YMU Sound Generator MIC-SPK YMU 765 Ear-Jack V_BAT 13MHz V_BAT Analog Switch MAX4684 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 25 C442 C213 C215 ZD405 CN401 C218 C430 R405 C222 C429 C455 R411 R408 C441 C424 R407 R428 ZD408 R423 R404 R433 C425 C446 C445 R429 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 26 C470 C469 C468 C467 C466 C465 R348 R346 R347 C464 R344 R205 LED311 C463 LED309 LED310 R206 LED307 RIGHT C462 R207 C461 C460 C459 C458 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
- Page 27 ELECTRONICS ⓒ Samsung Electronics Co.,Ltd. JUNE. 2004 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.: GH68-00000A International and/or domestic law. BASIC.