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Samsung SGH-X450 Service Manual

Gsm telephone
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SERVICE
GSM TELEPHONE
G S M
T E L E P H O N E
Manual
1.
Specification
2.
Circuit Description
3.
E xploded Views and Parts L ist
4.
E lectrical Parts L ist
5.
Block Diagrams
6.
PCB Diagrams
7.
Flow Chart of Troubleshooting
CONTENTS

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Summary of Contents for Samsung SGH-X450

  • Page 1 G S M T E L E P H O N E Manual SERVICE GSM TELEPHONE CONTENTS Specification Circuit Description E xploded Views and Parts L ist E lectrical Parts L ist Block Diagrams PCB Diagrams Flow Chart of Troubleshooting...
  • Page 2 ELECTRONICS...
  • Page 3 - 1 0 0 d B m TDM A M u x C el l Ra d iu s 3 5 Km 3 5 Km 2 Km 1- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 4 7 ¡¾ 3 dBm 5 ¡¾ 3 dBm 2 ¡¾ 5 dBm 2 ¡¾ 5 dBm 0 ¡¾ 5 dBm 0 ¡¾ 5 dBm 1- 2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 5 After channel selection, the digital output is scaled with a digital PGA, which is controlled with the DGAIN. DACs drive a differential analog signal onto the RXIP, RXIN, RXQP, RXQN pins to interface to standard analog-input baseband IC. 2- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 6 Li-Ion battery. Used in conjunction with a current-limited voltage source, this block safely conditions near-dead cells and provides the option of having fast-charge and top-off controlled internally or by the system's microprocessor. 2- 2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 7 CP_TCK and DSP_TCK signals are used for clock because JTAG communication is a synchronous. CP_TMS and DSP_TMS signals are test mode signals. The difference between these is the RESET_INT signal which is for ARM core RESET. 2- 3 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 8 CPU of the portable telephones. Moreover, the registers of the FM synthesizer can be operated directly for real time sound generation, allowing, for example, utilization of various sound effects when using the game software installed in the portable telephone. 2- 4 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 9 CSROMEN, CSRAMEN and CS1N to CS4N in the ARM core are connected to each memory. WEN and OEN control the process of memory. External IRQ(Interrupt ReQuest) signals from each units, such as, YMU, Ear-jack, Ear-mic and CSP1093, need the compatible process. 2- 5 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 10 This system uses the 13MHz TCXO, TCO-9141B, Toyocom. AFC control signal form CSP1093 controls frequency from 13MHz x-tal. It generates the clock frequency. This clock is fed to CSP1093,Trident,YMU762 and Silab solution. 2- 6 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 11 Q0032 Q0001 Q0003 Q0005 Q0007 Q0006 Q0008 Q0009 Q0015 Q0010 Q0002 Q0056 Q0031 Q0014 Q0012 Q0030 Q0026 Q0011 Q0020 Q0004 Q0013 Q0056 Q0038 3- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 12 MPR SCREW CAP RIGHT GH74- 01467A Q0032 PMO SUB WINDOW GH72- 09526A Q0038 BATT ERY- 720MAH GH43- 00940A Q0056 SCREW MACHINE 6001- 001479 3- 2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 13 3- 3. Serial Cable (GH39- 00140A) (GH39- 00127A) 3- 4. Power Supply Cable 3- 6. TA 3- 5. DATA CABLE (GH44- 00184A) (GH39- 00143B) 3- 3 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 14 2 00 7- 00 0 14 0 R8 06 1 40 5- 00 1 08 2 V 1 00 0 2 00 7- 00 0 14 0 R8 11 4- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 15 2 00 7- 00 7 14 2 R3 06 2 00 7- 00 0 17 1 R5 01 2 00 7- 00 7 14 2 R4 03 4- 2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 16 2 20 3- 00 1 40 5 C40 8 2 20 3- 00 0 25 4 C51 1 2 20 3- 00 1 41 2 C11 6 4- 3 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 17 2 90 1- 00 1 26 8 F70 3 2 20 3- 00 5 49 6 C21 1 2 90 1- 00 1 26 8 F70 4 4- 4 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 18 3 72 2- 00 1 71 5 CN 1 00 0 4 30 2- 00 1 15 7 B A T 30 0 4- 5 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 19 (1710 ~ 1785 MHz) SCLK PCS TX SENB (1850 ~ 1910 MHz) PDNB Dual PAM (U200) EGSM TX (880 ~ 915 MHz) Bryce Park 5- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 20 R O M ( 32M ) ( 128M ) M ot or B' D B' D conn. M em or y par t 5- 2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 21 6 . S G H - X 4 5 0 P C B D i a g r a m s 1. Main PCB Top Diagr am 6- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 22 SGH- X450 PCB Diagrams 2. Main PCB Bot t om Diagr am 6- 2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 23 (related to O SC 100) Freq = 13M H z , V rm s ¡Ã300m V Y es C heck the initial operation E N D 7- 1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 24 C heck the L C DPart Y es Sound is O .K C heck the A udio Part Y es E N D 7- 2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 25: Sim Part

    C heck the U 300 pin#1, #2, #3, #4 of C N 300? Y es C heck the SIMC ard E N D 7- 3 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 26: Charging Part

    The IC H R G= 1.4V (during charging) and ¡Ö180m V (full Solder again or change R 306 charging) ? Y es E N D 7- 4 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 27 SG H- X450 F low Chart of Troubleshooting 7- 5 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 28: Microphone Part

    (C 1009, R 1010, R 1009, R 1006, R 1008..) Y es Is m icrophone ok ? C heck U 500 Y es E N D 7- 6 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 29: Speaker Part

    U 1001 is U 1001 is " L ow" " H igh" C heck U 1001 C heck U 500 E N D 7- 7 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 30 SG H- X450 F low Chart of Troubleshooting 7- 8 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 31 V p -p:1 0 0 m V ? r e so ld e ro rc h a n g e C H E C K U 5 0 0 7- 9 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 32: Egsm Transmitter

    U 1 0 0 c h a n g eo rr e so ld e r U 5 0 0 c h a n g e 7- 10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 33: Dcs Receiver

    V p -p:1 0 0 m V ? r e so ld e ro rc h a n g e C H E C K U 5 0 0 7- 11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 34: Dcs Transmitter

    U 1 0 0 c h a n g eo rr e so ld e r U 5 0 0 c h a n g e 7- 12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 35: Pcs Receiver

    V p -p:1 0 0 m V ? r e so ld e ro rc h a n g e C H E C K U 5 0 0 7- 13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 36: Pcs Transmitter

    U 1 0 0 c h a n g eo rr e so ld e r U 5 0 0 c h a n g e 7- 14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 37 SG H- X450 F low Chart of Troubleshooting 7- 15 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 38 SG H- X450 F low Chart of Troubleshooting 7- 16 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

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