Samsung SGH-X450 Service Manual Download | Manualshive

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SGH-X450

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

1
2
3
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Summary of Contents for SGH-X450

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: ...nics Co Ltd April 2004 Printed in Korea Code No GH68 04745A 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: ...0 1990 ARFCN range 1 124 0 124 975 1023 512 885 512 810 Tx Rx spacing 45MHz 45MHz 95MHz 80MHz Mod Bit rate Bit Period 270 833kbps 3 692us 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 576 9us 4 615ms Modulation 0 3GMSK 0 3GMSK 0 3GMSK 0 3GMSK MS Power 33dBm 13dBm 33dBm 5dBm 30dBm 0dBm 30dBm 0dBm Power Class...

Page 4: ...17 2 dBm 14 15 2 dBm 15 13 2 dBm 16 11 3 dBm 17 9 3dBm 18 7 3 dBm 19 5 3 dBm TX Power control level DCS1800 0 30 2 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 PCS1900 0 30 2 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 d...

Page 5: ...nd Tx modulator are controlled by serial data to select channel and use fast lock mode for GPRS high class operation 5 SI 4205 U100 This chip integrates three differential input LNAs The GSM input supports the E GSM DCS input supports the DCS1800 PCS input supports the PCS1900 The LNA inputs are matched to the 200 ohm differential output SAW filters through eternal LC matching network Image reject...

Page 6: ...switch supplies power to external accessories Ancillary support functions such as two LED drivers and two call alert drivers aid in reducing both board area and system complexity A four wire serial interface unit SIU provides access to control and configuration registers This interface gives a microprocessor full control of the PSC2106 and enables system designers to maximize both standby and talk...

Page 7: ...f main LCD color 65K UFB LCD Chip select signals of EMI part in the trident CLCD_EN can enable main LCD LED_EN signal enables white LED of main LCD and EL_EN signal enables dimming mode of main LCD These two signals are from IO part of the DSP in the trident RST signal from 2106 initiates the initial process of the LCD 16 bit data lines D 0 D 15 transfers data and commands to LCD through emi_filte...

Page 8: ... to use SDS DEBUG DLC DETECT JIG_ON VEXT VTEST VF VBATT and GND They connected to power supply IC microprocessor and signal processor IC 4 Audio AOUTAP AOUTAN from CSP1093 is connected to the speaker via analog switch AOUTBP and AOUTBN are connected to the ear mic speaker via ear jack MICIN and MICOUT are connected to the main MIC And AUXIN and AUXOUT are connected to the Ear mic YMU762MA3 is a LS...

Page 9: ...lt supply voltage VCCD During wrting process CP_WEN is low and it enables writing process to flash memory and SCRAM During reading process CP_OEN is low and it output information which is located at the address from the trident in the flash memory or SCRAM to data lines Each chip select signals in the trident select memory among 2 flash memory and SCRAM Reading or writing procedure is processed af...

Page 10: ...iming and control register matches the internal quarter bit counter and internal frame counter the 148 bits in the internal Register are GMSK modulated according to GSM 2 standards The resulting phase information is translated into I and Q differential output voltages that can be connected directly to an RF modulator at the TXOP and TXON pins The DSP is notified when the transmission is completed ...

Page 11: ...d View and its Parts list 3 1 This Document can not be used without Samsung s authorization 1 Cellular phone Exploded View Q0003 Q0005 Q0006 Q0010 Q0014 Q0020 Q0013 Q0056 Q0026 Q0015 Q0011 Q0002 Q0009 Q0008 Q0007 Q0031 Q0030 Q0012 Q0056 Q0001 Q0004 Q0038 S A M S U N G Q0032 ...

Page 12: ...10A Q0005 MEC KEYPAD GH75 04141A Q0006 UNIT METAL DOME GH59 01212A Q0007 LCD GH07 00490A Q0008 MOTOR DC GH30 00077A Q0009 SPEAKER 3001 001509 Q0010 PBA MAIN GH92 01595A Q0011 MEC WINDOW LCD MAIN GH75 04140A Q0012 RMO COVER IF CONN GH73 01844A Q0013 RMO RF COVER GH73 02975A Q0014 MICROPHONE ASSY GH30 00090A Q0015 UNIT FPCB GH59 01213A Q0020 ANTENNA GH42 00374A Q0026 MEC VOL KEY GH75 02846A Q0030 MP...

Page 13: ... Exploded view and its Part list 3 3 This Document can not be used without Samsung s authorization 3 Test Jig GH80 00865A 3 1 RF Test Cable GH39 00140A 3 2 Test Cable GH39 00127A 3 3 Serial Cable 3 4 Power Supply Cable 3 5 DATA CABLE GH39 00143B 3 6 TA GH44 00184A ...

Page 14: ... 001274 U600 1201 002078 U200 1203 002902 U300 1203 003105 U900 1203 003109 U301 1204 001984 U500 1204 002161 U1013 1205 002433 U100 1404 001256 TH401 1405 001019 V805 1405 001082 V1000 1405 001082 V1001 1405 001082 V1002 1405 001082 V1003 1405 001082 V1004 1405 001082 V700 1405 001082 V705 1405 001082 V706 1405 001082 V800 1405 001082 V801 1405 001082 V802 1405 001082 V803 1405 001082 V804 1405 0...

Page 15: ...0171 R1027 2007 000171 R1028 2007 000171 R1029 2007 000171 R105 2007 000171 R200 2007 000171 R201 2007 000171 R203 2007 000171 R204 2007 000171 R205 2007 000171 R310 2007 000171 R501 2007 000171 R600 2007 000171 R603 2007 000171 R807 2007 000171 R911 2007 000172 R101 2007 000172 R300 2007 000172 R407 2007 000172 R601 2007 000172 R700 2007 000566 R810 2007 000947 R302 2007 000758 R303 2007 001119 R...

Page 16: ...403 2203 000254 C407 2203 000254 C409 2203 000254 C410 2203 000254 C411 2203 000254 C412 2203 000254 C417 2203 000254 C508 2203 000254 C509 2203 000254 C510 2203 000254 C511 2203 000254 C513 2203 000254 C514 2203 000254 C515 2203 000254 C604 2203 000254 C700 2203 000278 C1020 2203 000359 C1000 2203 000386 C115 2203 000386 C414 2203 000386 C416 2203 000425 C503 2203 000438 C1014 2203 000438 C1021 2...

Page 17: ...0 C222 2203 005450 C519 2203 005482 C1031 2203 005482 C113 2203 005482 C209 2203 005482 C512 2203 005482 C715 2203 005482 C900 2203 005482 C901 2203 005496 C128 2203 005496 C211 2203 005496 C213 2203 005496 C214 2203 005496 C404 2203 005496 C413 2203 005496 C505 2203 005509 C703 2203 006053 C902 2203 006137 C1003 2203 006201 C301 2203 006201 C309 2203 006201 C310 2203 006201 C316 2203 006201 C903 ...

Page 18: ...lectrical Parts List 4 5 This Document can not be used without Samsung s authorization 2901 001268 F705 2904 001480 F200 2909 001215 U201 3301 001659 L800 3705 001273 CON201 3709 001244 CN301 3710 001816 CN800 3711 005229 CN1001 3722 001715 CN1000 4302 001157 BAT300 ...

Page 19: ...gram EGSM RX 925 960 MHz DCS RX 1805 1880 MHz SAW FILTER LNA LNA PGA PGA ADC ADC VCTCXO OSC100 EGSM TX 880 915 MHz DCS TX 1710 1785 MHz Dual PAM U200 Front End Module U201 RF Conector CON201 Si4205 U100 RF PLL IF PLL PD LPF Mixer Channel Filter PGA PGA DAC DAC 100 kHz CSP1093 U500 Bryce Park I Q I Q SDATA SCLK SENB PDNB LNA PCS RX 1930 1990 MHz 1850 1910 MHz PCS TX F200 ...

Page 20: ...M MAIN VCO TX VCO IF VCO GPIO POWER LDO CHARGER SIM X TAL 13MHz RS232 CSP1093 Audio Part LCD KEYBOARD SCRAM 32M FLASH ROM 128M TXIP TXIN TXQP TXQN RXIP RXIN RXQP RXQN SERCK SERLE SERDA RFOVL TXP OCTL RF DIRVER TXI Q RX I Q TXP SERCK SERLE SERDA OCTL IO RWN AB 8 0 DB 15 0 INT1 IRQx PAx RSTB IO RWN AB 8 0 DB 15 0 INT1 IRQx PAx RSTB ARM JTAG ICE DAICK DAIRN DAIDO DAIDI DAI DSPJTAG JTAG GPRS ACC PPI P...

Page 21: ...SAMSUNG Proprietary Contents may change without notice 6 SGH X450 PCB Diagrams 6 1 This Document can not be used without Samsung s authorization 1 Main PCB Top Diagram ...

Page 22: ...SAMSUNG Proprietary Contents may change without notice SGH X450 PCB Diagrams 6 2 This Document can not be used without Samsung s authorization 2 Main PCB Bottom Diagram ...

Page 23: ... Power On Voltage 3 3V Download again Charge the Battery pin 11 of U300 2 8V Check U300 and C310 pin 39 of U300 2 8V Check U300 and C309 Check the clock signal at pin 3 of OSC100 Freq 13MHz Vrms 300mV Check the clock generation circuit related to OSC100 END No Yes Yes Yes Yes Yes No No No No pin 9 1 8V No Yes Check the VBATT Voltage Check the pin of U300 Check the initial operation Check the curre...

Page 24: ...Initialization Failure Check the U300 If it has some problem adjust it END No Yes Is the pin 19 of U300 Low High Yes Check the U400 32 768kHz wave forms at the C414 and C416 Check the LCD Part Yes No No Yes Yes Yes The Voltage is High at the C307 Check the Audio Part No Check the U300 If it has some problem adjust it Check the U300 The pin 22 of U300 is High Check the U300 LCD display is O K No No...

Page 25: ...leshooting This Document can not be used without Samsung s authorization 7 3 3 SIM Part Are there any Signals at pin 52 53 54 of U300 Insert SIM is displayed on the LCD Check the U400 Check the SIM Card END No Yes Yes Yes No Check the U300 Are there any Signals at pin 1 2 3 4 of CN300 ...

Page 26: ...zation SGH X450 Flow Chart of Troubleshooting 7 4 4 Charging Part The pin 17 18 of CN800 is TA_VEXT 5V Abnormal charging operation Replace TA or Check CN800 1 No END Yes The pin 7 of U301 is 3 2 4 2V Check the U301 No Yes No Solder again or change R306 Yes The ICHRG 1 4V during charging and 180mV full charging ...

Page 27: ...B 35 32 VL5S_A VL5S_B 31 49 SIM_RST 53 UP_CL K UP_IO 52 UP_RST 54 VACC 3 VBAT 2 10 VDD12 VDD34 38 VDD5 5 RING_DR V RING_PWM 55 13 RTC_ALMN SCLK 17 SD I 15 SD O 16 SIM_CLK 50 51 SIM_IO 14 INTR Q 7 LED1_DRV LED2_DRV 8 PSW1_BUF 20 21 PWR_KEEP PWR_SW1N 46 47 PWR_SW2 RESETN 19 62 GND GND 63 64 GND 65 GND GND 66 GNDD 60 GNDD 1 6 28 GND Q 26 EN_5A EN_5B 27 GND 57 67 GND GND 68 58 GND GND 59 61 GND 56 ADC...

Page 28: ...hart of Troubleshooting 7 6 5 Microphone Part Is the assembled status of microphone O K Microphone does not work C1016 2 5V Reassemble the microphone Solder the microphone again or Replace around Mic Circuit C1009 R1010 R1009 R1006 R1008 END No Yes Yes Yes Yes No Is microphone ok No Check U500 Check the reference voltage on Mic path ...

Page 29: ...und from Speaker Are there any signals at the pin 20 of CN1001 pin 19 of CN1001 Check LCD or Replace CN1001 Check U1000 Are there any signals at the pin 5 and pin 7 of U1001 END No Yes Yes Yes No No The type of sound from the Speaker is Melody Replace the Speaker Yes No No No Yes Yes Yes Check U1001 Are there any signals at the pin 2 and pin 10 of U1001 The pin 4 of U1001 is High No Check U500 The...

Page 30: ...1009 1UF R1006 2 2K R1024 3 4 5 6 10K 02 828P0 53BKA CN100 0 1 2 VC040205X150R V1000 V1002 VC040205X150R 0 R1016 VC040205X150R V1001 VC040205X150R V1003 10 K 10UF C100 4 10 V R1005 C102 2 1N F 22N F C1003 VCCD VCCA VCCD 10 R1002 C1011 56PF R1019 C1031 100N F 10 K 31 R D 4 RST W R 28 33UF C1016 18 SPOUT 2 SPVD D 15 16 SPVSS VD D 7 VREF 9 8 VSS 29 C S IRQ 3 HPOUT R 11 32 IOVDD 2 LED MT R 19 NC 56 PL...

Page 31: ...in38 13MHz Vp p 860mV U201 CHECK pin 1 2 65dBm U100 CHECK pin 20 21 65dBm Check soldered status of C205 C204 L211 CON1 resolder or change U201 resolder or change C220 C221 L204 resolder or change OSC100 CHECK pin 4 clean 3V U100 CHECK pin 9 clean 3V C118 R103 C108 resolder OSC100 change or resolder U300 pin 39 check or resolder U100 pin 1 2 3 28 Vp p 100mV U100 resolder or change CHECK U500 NO YES...

Page 32: ...een R201 U200 1 2V YES NO R201 check change R204 5dBm YES YES U200 change U500 check change YES NO U100 pin 9 3V U300 pin 39 change or resolder YES U100 pin 5 6 7 8 1 7V YES U500 change NO NO U100 change or resolder YES U100 pin 8 13MHz Vp p 950mV U100 pin 10 12 13 14 3V YES OSC100 pin 3 13MHz Vp p 950mV OSC100 change or resolder U500 check or change 0SC100 pin 4 3V U300 pin 39 change or resolder ...

Page 33: ...pin 8 13MHz Vp p 860mV U201 CHECK pin 3 4 65dBm U100 CHECK pin 18 19 65dBm Check soldered status of C205 C204 L211 CON1 resolder or change U201 resolder or change C218 C219 L203 resolder or change OSC100 CHECK pin 4 clean 3V U100 CHECK pin 9 clean 3V C118 R103 C108 resolder OSC100 change or resolder U300 pin 39 check or resolder U100 pin 1 2 3 28 Vp p 100mV U100 resolder or change CHECK U500 NO YE...

Page 34: ... change Between R201 U200 1 2V YES NO R201 check change NO R203 5dBm YES YES YES U500 check NO U100 pin 9 3V U300 pin 39 change or resolder YES U100 pin 4 5 6 7 1 7V U500 change NO NO U100 change or resolder YES U100 pin 8 13MHz Vp p 950mV U100 pin 10 12 13 14 3V YES YES OSC100 pin 3 13MHz Vp p 950mV OSC100 change or resolder U500 check or change OSC100 pin 4 3V U300 pin 39 change or resolder U300...

Page 35: ...z Vp p 860mV U201 CHECK pin 6 65dBm U100 CHECK pin 16 17 65dBm Check soldered status of C205 C204 L211 CON1 resolder or change U201 resolder or change near parts of F200 or C218 C219 L203 resolder or change OSC100 CHECK pin 4 clean 3V U100 CHECK pin 9 clean 3V C118 R103 C108 resolder OSC100 change or resolder U300 pin 39 check or resolder U100 pin 1 2 3 28 Vp p 100mV U100 resolder or change CHECK ...

Page 36: ... change Between R201 U200 1 2V YES NO R201 check change NO R203 5dBm YES YES YES U500 check NO U100 pin 9 3V U300 pin 39 change or resolder YES U100 pin 4 5 6 7 1 7V U500 change NO NO U100 change or resolder YES U100 pin 8 13MHz Vp p 950mV U100 pin 10 12 13 14 3V YES YES OSC100 pin 3 13MHz Vp p 950mV OSC100 change or resolder U500 check or change OSC100 pin 4 3V U300 pin 39 change or resolder U300...

Page 37: ... FAR F6EB 1G9600 B2BW 2 G 5 G 1 IN 3 OUT 4 C221 1P F ANT20 0 C218 0 75P F 6 3V 100U F C20 7 NC C208 1PF C216 0 75P F L203 8 2NH C219 NC R202 R20 0 0 0 R20 1 C20 6 C214 33PF J_ANT 220NF VBATT C20 5 10nH VSEN 220N F C211 6 PACENA 2 RSVD 15 22 VAPC VBATT 20 3 VCC1 VCC1 81 VCC_CMOS 19 10 11 GND 13 GND 14 GND 16 GND GND 18 GND 21 GSM850 900OUT 12 GSM850 900I N DCS PCSIN DCS PCSOUT 17 7 GND 23 GND 24 GN...

Page 38: ...39PF C126 VR F XOUT 10 _PD N 12 _SEN VR F TXIN 4 TXIP TXQN 7 6 TXQP VD D 9 VDD 32 26 XEN 8 XIN 27 RFO G 3 RXI N RXI P 2 1 RXQN 28 RXQ P 13 SCLK 14 SD I 11 SD O 5 NC 19 RFID N RFID P 18 21 RFIG N 20 RFIG P 17 RFIP N 16 RFIP P 22 RFO D 23 GND GND 30 31 GND 33 GND 34 GND GND 35 36 GND NC 37 38 U100 SI4205 B M 24 DIAG1 25 DIAG2 15 GND 29 3 9n H L900 PCS_LNA_IN_ P PCS_LNA_IN_ N RXQP XOEN A 13MHZ_BB SI_...

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