Samsung SGH-X460 User manual

SGH-X460
SERVICE
Manual
GSMTELEPHONECONTENTS
1.Specification
2.Circuit Description
3. ExplodedViews and PartsList
4. ElectricalPartsList
5.BlockDiagrams
6.PCB Diagrams
7. FlowChartofTroubleshooting
GSMTELEPHONE

ELECTRONICS
Samsung ElectronicsCo.,Ltd.May.2004
Printedin Korea.
CodeNo.:GH68-05344A
BASIC.
ⓒ
T
hisServiceManual isa propertyofSamsung ElectronicsCo.,Ltd.
A
nyunauthorized use ofManualcan bepunished underapplicable
I
nternationaland/ordomesticlaw.

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1. SGH-X460 Specification
1-1
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GSM900
Phase1EGSM900 Phase2DCS1800 Phase1
Freq.Band[MHz]
Uplink/Downlink 890~915 935~960 880~915 925~960 1710~1785 1805~1880
ARFCNrange1~124 0~124 &
975~1023 512~885
Tx/Rxspacing 45MHz45MHz95MHz
Mod.Bit rate/
Bit Period 270.833kbps 3.692us270.833kbps 3.692us270.833kbps 3.692us
TimeSlot
Period/FramePeriod 576.9us 4.615ms576.9us 4.615ms576.9us 4.615ms
Modulation 0.3GMSK0.3GMSK0.3GMSK
MS Power33dBm~13dBm33dBm~5dBm30dBm~0dBm
PowerClass 5pcl~15pcl5pcl~19pcl0pcl~15pcl
Sensitivity-102dBm-102dBm-100dBm
TDMAMux 8 8 8
Cell Radius35Km35Km2Km
1. GSMGeneralSpecification

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Specification
1-2
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TXPower
control levelGSM900
5 33±2 dBm
6 31±2 dBm
7 29±2 dBm
8 27±2 dBm
9 25±2 dBm
10 23±2 dBm
11 21±2 dBm
12 19±2 dBm
13 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
TXPower
control levelDCS1800
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
2. GSMTXpower class

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2. SGH-X460 Circuit Description
2-1
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Ⅰ.SGH-X460 RFCircuitDescription
A.RX PART
1. ASM(U102)
→Switching Tx, Rx pathforGSM900, DCS1800 by logic controlling.
2. ASMControlLogic
→TruthTable
VC_1 VC_2
GSMTxModeHL
DCSTxModeLH
GSMRxModeL L
DCSRxModeL L
3. FILTER
ToconvertElectromagneticFieldWavetoAcoustic Wave and then pass thespecificfrequency
band.
-GSMFILTER(F100)→For filtering thefrequency band between 925 ~960 MHz
-DCS FILTER(F101)→For filtering thefrequency band 1805 and 1880 MHz.
4. VC-TCXO(OSC101)
To generatethe26MHzreference clockto drivethelogic and RF.
Afteradditionalprocess,thereference clockappliestotheU100 RxIQdemodulatorand Tx
IQmodulator.
Theoscillator forRXIQdemodulatorand Txmodulatorare controlledbyserialdatatoselect
channeland usefast lockmodeforGPRShigh class operation.
5. UAA3536(U100)
Thischipintegratestwo differential-inputLNAs.
TheGSMinputsupportstheE-GSM,DCSinputsupportstheDCS1800. TheLNA inputsare
matchedtothe150 ohmdifferentialoutputSAWfiltersthrough externalLCmatching network.
Image-reject mixerdownconvertstheRFsignal toa100 KHzintermediatefrequency(IF)with
theRFLOfromOSC100 voltage-controlled oscillator.TheRFLOfrequencyisbetween 1801 ~
1921 MHz.
TheMixeroutput isamplifiedwithananalog programmablegainamplifier(PGA),whichis
controlled by AGAIN.
ThequadratureIFsignal isdigitizedwith high resolution A/Dconverts(ADC).

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CircuitDescription
2-2
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B.TXPART
Baseband IQsignalfedinto offsetPLL,thisfunction isincludedinsideofU100 chip.
UAA3536 chip generatesmodulatorsignalwhich powerlevel isabout1.5dBmand fedinto
PowerAmplifier(U105).
ThePAoutputpowerand power ramping arewell controlledbyAutoPowerControlcircuit.
We useoffsetPLL belowtable.
Modulation Spectrum
200kHzoffset
30 kHzbandwidth
GSM-35dBc
DCS-35dBc
400kHzoffset
30 kHzbandwidth
GSM-66dBc
DCS-65dBc
600kHz~1.8MHzoffset
30 kHzbandwidth
GSM-75dBc
DCS-68dBc
Ⅱ.BasebandCircuitdescriptionofSGH-X460
A.PCF50601
1. Power Management
Tenlow-dropoutregulatorsdesignedspecificallyforGSMapplicationspowertheterminaland
helpensureoptimalsystemperformance and long batterylife.Aprogrammableboostconverter
provides supportfor1.8V, 3.0V,and 5.0VSIMs,whileaself-resetting, electronicallyfused
switchsuppliespowertoexternalaccessories.Ancillarysupportfunctions,suchasRTCmodule
and High VoltageChargepump, Clock generator,aidinreducing both boardarea and system
complexity.
I2C BUSserial interface providesaccess tocontroland configuration registers.Thisinterface
givesamicroprocessor full controlofthePCF50601 and enables systemdesignerstomaximize
bothstandby and talktimes.
Supervisoryfunctions.including aresetgenerator,aninputvoltagemonitor,and atemperature
sensor,supportreliablesystemdesign. Thesefunctionsworktogethertoensurepropersystem
behaviorduring start-up orinthe eventofafault condition(lowmicroprocessorvoltage,
insufficientbatteryenergy, orexcessivedietemperature).
2. BacklightBrightness Modulator
TheBacklightBrightness Modulator (BBM)containsaprogrammablePulse-widthmodulator
(PWM)and FET tomodulatetheintensity ofaseriesofLED’sortocontrolaDC/DC
converterthatdrivesLCDbacklight.
Thisphone(SGH-X460)usePWM.

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CircuitDescription
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3. ClockGenerator
TheClockGenerator (CG)generatesall clocksforinternaland externalusage.The32768 Hz
crystaloscillatorprovidesanaccuratelowclockfrequencyforthePCF50601 and othercircuitry.
B.Connector
1. LCD Connector
LCDisconsisted ofmainLCD(color65K UFBLCD)and small LCD(B/W).Chipselect
signals,LCD_MAIN_CSand LCD_SUB_CS,canenableEachLCD.Backlightsignalenables
whiteLEDofmainLCDand small LCD."RESET_2V8"signal initiatestheResetprocess of
theLCD.
16-bit datalines(HD(0)~HD(15)) transfersdata and commandstoLCDthrough by pass
capacitor.
"SPK_P"and "SPK_N"fromOM6357 areusedforaudiospeaker.And "VDD_VIB"from
PCF50601 enablesthemotor.
2. Key
Thisisconsisted ofkeyinterface pinsamong OM6357, KBIO(0:7).Thesesignalscomposethe
matrix. Result ofmatrixinformsthekeystatusto keyinterface intheOM6357. Poweron/off
keyis separatedfrom thematrix. So poweron/off signal isconnectedwithPCF50601 toenable
PCF50601. twelvekeyLEDusethe"VBAT"supply voltage."VDD_KEY"signalenables
LEDswithcurrentcontrol."FLIP"informsthestatusof folder (open orclosed)totheOM6357.
Thisusesthehall effectIC,A3210ELH.AmagnetundermainLCDenablesA3210ELH.
3. EMIESDFilter
This systemusestheEMIESDfilter,EMIF09 to protectnoisefromIFCONNECTORpart.
4. IFconnetor
It is24-pinconnector.Theyaredesignedto useVBAT,V_EXT_CHARGE,TXD0, RXD0,
RTS0, CTS0, JIG_REC,CHARGER_OK,RXD1, TXD1, AUX_MIC,AUX_SPKand GND.
Theyconnectedto powersupplyIC,microprocessorand signalprocessor IC.

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CircuitDescription
2-4
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C.BatteryCharge Management
Acomplete constant-current/constant-voltagelinearcharger forsingle cell lithium-ion batteries.
If TAconnectedto phone,"CHARGER_OK"enable charger ICand supplycurrent to battery.
whenfault condition caused, "CHG_ON"signal levelchangelowto high and charger ICstop
charging process.
D.Audio
EARP_Pand EARP_NfromOM6357 are connectedtothemainspeaker.AUXSP isconnectedto
theHandsfree kit.MIC_Pand MIC_Nare connectedtothemainMIC.And AUX_MIC_Pand
AUX_MIC_Nare connectedtotheHandsfree kit.
YMU762CisaLSI forportabletelephonethat iscapableofplaying high qualitymusicby
utilizing FM synthesizerand ADPCMdecoderthatareincludedinthisdevice.
Asasynthesis,YMU762MA3isequipped 32 voiceswith different tones.Since thedevice is
capableofsimultaneously generating up tosynchronouswiththeplay oftheFM synthesizer,
various sampled voicescan beusedas sound effects.
Since theplay dataofYMU762MA3areinterpretedatanytimethrough FIFO,thelength ofthe
data(playing period)isnot limited, sothedevice canflexiblysupportapplication suchasincoming
call melody musicdistribution service.Thehardwaresequencerbuilt inthisdevice allowsplaying
ofthe complexmusicwithoutgiving excessiveloadtotheCPUoftheportabletelephones.
Moreover,theregistersoftheFM synthesizercan beoperated directlyfor real timesound
generation, allowing, forexample, utilization ofvarious sound effectswhen using thegame
softwareinstalledintheportabletelephone.
YMU762 includesaspeakeramplifierwith high rippleremovalratewhosemaximumoutput is
550mW(SPVDD=3.6V).Thedevice isalsoequippedwithconventionalfunction including a
vibratorsynchronouswithmusic.
Fortheheadphone,it isprovidedwithastereophonicoutput terminal.
Forthepurposeofenabling YMU762MA3to demonstrateitsfull capabilities,Yamahapurposeto
use"SMAF:SyntheticmusicMobileApplication Format"asadatadistribution format that is
compatiblewithmultimedia.
Since theSMAFtakesastructurethatsetsimportance on thesynchronization betweensound and
images, variouscontentscan bewrittenintoit including incoming call melody withwordsthatcan
beusedfortraining karaoke,and commercialchannel thatcombinestexts,imagesand sounds,and
others.
ThehardwaresequencerofYMU762MA3 directlyinterpretsand playsblocksrelevant tosynthesis
(playing music and reproducing ADPCMwithFM synthesizer) thatareincludedin datadistributed
inSMAF.

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CircuitDescription
2-5
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E.Memory
SignalsintheOM6357 enabletwomemories.They useonly onevolt supply voltage,VDD3in
thePCF50601. This systemusesSamsung'smemory, KBB06A300M-T402. It isconsisted of128M
bitsflashNORmemoryand 128MbitsflashNAND memoryand 32MbitsUtRAM.Ithas16 bit
dataline,HD[0~15]whichisconnectedtoOM6357. Ithas23 bit address lines,HA[1~23].
CS_NAND and NCSRAM signalsischipselect.
Writing process,HWR_Nislowand it enableswriting process toflashmemoryand SRAM.
During reading process,HRD_Nislowand it enablesreading process toflashmemoryand
SRAM.EachchipselectsignalsintheOM6357 select memoryamong 2 flashmemoryand
UtRAM.
Reading orwriting procedureisprocessedafterHWR_NorHRD_Nisenabled. Memoriesuse
reset,whichisVDD3 delayfromPCF50601. HA[22]signalenableslowerbyteofSRAMand
HA[22]signalenableshigherbyteofSRAM.
F.OM6357
OM6357 isconsisted ofARMcore and DSP core.Ithas8x1Kword on-chip program/dataRAM,
55 Kwordson-chip programROMintheDSP.Ithas4K*32bitsROMand 2K*32bitsRAMinthe
ARMcore.DSP isconsisted ofKBS,JTAG,EMIand UART.ARMcoreisconsisted ofEMI,
PIC(ProgrammableInterruptController),reset/power/clock unit,DMAcontroller,TIC(TestInterface
Controller),eripheralbridge,PPI,SSI(SynchronousSerialInterface),ACC(Asynchronous
communicationscontrollers),timer,ADC,RTC(Real-TimeClock)and keyboardinterface.
KBIO(0:7),address linesofDSP core and HD[0~15].HA[1~23],address linesofARMcore and
HD[0~15], datalinesofARMcore are connectedtomemory, YMU762. MV317S(CameraDSP
Chip)controlsthe communication betweenARMcore and DSP core.
CS_NAND,NCSRAM,NCSFLASHintheARMcore are connectedtoeachmemory. HWR_N
and HRD_Ncontrol theprocess ofmemory. ExternalIRQ(InterruptRequest)signalsfromeach
units,suchas,PMUneedthe compatibleprocess.
KBIO[0~7] receivethestatusfromkeyand RXD0/TXD0/IrDA_DOWNareusedforthe
communicationsusing IRDA and datalink cable(DEBUG_DTR/RTS/TXD/RXD/CTS/DSR).
Ithas JTAG controlpins(TDI/TDO/TCK) forARMcore and DSP core.Itreceives13MHz clock
inCKIpinfromexternalTCXO.ADC(Analog toDigitalConvertor) partreceivesthestatusof
temperature, batterytype and battery voltage.
G.VC_TCXO-214C6(26MHz)
This systemusesthe26MHzTCXO,VC_TCXO-214C6. AFCcontrolsignalfromOM6357
controlsfrequencyfrom26MHzX-tal.The clock outputfrequency ofUAA3536HN is13MHz.
ThisclockisconnectedtoOM6357, YMU762.

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3. SGH-X460 ExplodedViewand its Partslist
3-1
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1.CellularphoneExplodedView-1
QFU01
QMO02
QSP04
QFL01
QMW01
QCR04
QSC11
QKP01
QFR01
QMP01
QME02
QAN02
QRE01
QRF01
QCR04
QVO01
QIF01
QBA18
QVK01
QLC67
QSC12

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Explodedviewand its Partlist
3-2
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2.CellularphonePartslist
Location
NO.DescriptionSEC CODE Remark
QFU01 FOLDER UPPER GH75-04524A
QLC67 LCDGH07-00564A
QSP04 SPEAKER 3001-001574
QMO02 MOTOR3101-001315
QFL01 FOLDER LOWER GH75-04525A
QMW01 MAINWINDOWLCDGH75-04528A
QFR01 FRONTCOVER GH75-04523A
QVO01 VOLUMEKEYGH75-04529A
QKP01 KEYPADGH75-04527A
QMP01 MAINPBAGH92-01799A
QVK01 VOLKEYFPCB GH59-01419A
QAN02 INTENNAGH42-00425A
QME02 METALDOMEGH59-01418A
QRE01 REARCOVER GH75-04526A
QIF01 IFCOVER GH72-13265A
QRF01 RFCOVER GH72-15078A
QCR04 SCREW6001-001479
QBA18 BATTERYGH43-01418A
QSC11 FOLDER SCREWCAPRGH74-09038A
QSC12 FOLDER SCREWCAPLGH74-09039A

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Explodedviewand its Partlist
3-3
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3.TestJig(GH80-01909A)
3-1.RFTestCable
(GH39-00261A)3-2.TestCable (GH39-00217A)3-3.SerialCable
3-4.PowerSupplyCable3-5.DATACABLE
(GH39-00143B)3-6.TA
(GH44-00482A)

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4. SGH-X460 ElectricalParts List
4-1
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SEC CODEDesignLOC
0403-001427 ZD301
0406-001167 ZD604,ZD605
0406-001201 V501,V502,V601,V602
0406-001201 V603,ZD401,ZD402
0406-001201 ZD501,ZD502,ZD503
0406-001201 ZD504,ZD505,ZD506
0505-001423 U606
0601-001790 LED500,LED501,LED502
0601-001790 LED503,LED504,LED505
0601-001790 LED506,LED507,LED508
0601-001790 LED510,LED511
0801-002237 U301
0801-002882 U202,U303,U602,U603
1001-001253 U502
1009-001010 SW500
1109-001280 U300
1201-002075 U105
1202-001036 U501
1203-003105 U500
1203-003109 U304
1204-002161 U302
1205-002276 U200
1205-002327 U100
1205-002350 U400
1404-001221 V300
1405-001082 V301,V302,V304,V604
1405-001082 V605,V606,V607,V608
1405-001082 V609,V610,V611,V612
1405-001082 V613
2007-000140 R104,R311
2007-000141 R101,R205,R206,R314
2007-000142 R116
2007-000146 R308
2007-000148 R107,R118,R121,R124
2007-000148 R132,R133,R201,R400
2007-000148 R401,R504
2007-000157 R312,R316
2007-000162 R200,R202,R203,R303
2007-000162 R306,R307,R313,R315
SEC CODEDesignLOC
2007-000162 R317,R323,R324,R501
2007-000162 R600,R601
2007-000171 R102,R105,R111,R112
2007-000171 R207,R305,R403,R532
2007-000172 R103
2007-000173 R507,R509,R510,R511
2007-000173 R512,R513,R516,R517
2007-000173 R531
2007-000174 R109
2007-000242 R502,R506
2007-000566 R106,R108,R320
2007-000982 R119,R120,R122,R123
2007-001288 R125,R129
2007-001301 R514,R515
2007-001305 R113,R115
2007-001313 R301
2007-001325 R304
2007-003001 R114
2007-007001 R204
2007-007008 R127,R128,R130,R131
2007-007009 R117
2007-007014 R300,R302
2007-007100 R402
2007-007107 R321,R322
2007-007148 R100
2007-007311 R110,R134
2007-007334 R519
2007-007480 R521,R522
2007-007489 R135,R518
2007-007573 R319
2007-008117 R318
2203-000233 C103,C104,C121,C300
2203-000233 C316
2203-000254 C125,C151,C154,C200
2203-000254 C201,C302,C405
2203-000278 C134,C143,C144,C501
2203-000278 C502,C510,C511,C601
2203-000278 C602,C603
2203-000359 C150,C310

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ElectricalPartsList
4-2
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SEC CODEDesignLOC
2203-000425 C102,C109
2203-000438 C123,C153,C305,C313
2203-000550 C127
2203-000585 C126,C130,C131,C132
2203-000585 C133
2203-000609 C128
2203-000679 C303,C432,C604
2203-000800 C117
2203-000812 C137,C142,C145,C156
2203-000812 C202,C207,C320,C321
2203-000812 C431,C528
2203-000854 C100,C107,C129
2203-000940 C149,C152
2203-000995 C529,C530,C607,C608
2203-000995 C609,C610,C611,C612
2203-001153 C138,C146
2203-001652 C410,C422
2203-002443 C503
2203-002525 C110
2203-003054 C407,C409
2203-005054 C430
2203-005056 C141
2203-005057 C114,C120
2203-005065 C122,C420
2203-005138 C108
2203-005288 C139
2203-005382 C155
2203-005481 C116,C118
2203-005482 C105,C106,C113,C115
2203-005482 C119,C203,C204,C205
2203-005482 C206,C208,C209,C210
2203-005482 C211,C212,C213,C214
2203-005482 C215,C216,C217,C218
2203-005482 C219,C220,C301,C304
2203-005482 C306,C309,C312,C319
2203-005482 C401,C403,C404,C408
2203-005482 C414,C417,C428,C504
2203-005482 C505,C509
2203-006053 C124,C308,C421,C424
SEC CODEDesignLOC
2203-006053 C425,C426,C427
2203-006093 C411,C524
2203-006137 C307
2203-006208 C402,C406,C413
2203-006257 C317
2203-006324 C412,C415
2301-001197 C111
2301-001213 C112
2404-001105 C314
2404-001225 C418,C419,C423,C429
2404-001239 C136
2404-001268 C135,C315
2404-001333 C500,C527
2703-001734 L104
2703-002199 L106
2703-002200 L101
2703-002203 L103
2703-002208 L100,L102
2703-002308 L109,L110
2703-002368 L112
2703-002700 L108
2801-004339 X1
2806-001329 OSC100
2809-001287 OSC101
2901-001246 U305
2901-001286 F600,F601,F602,F603
2904-001469 F100
2904-001470 F101
2909-001216 U102
3301-001105 L400,L501,L502
3301-001362 L503
3301-001438 R503,R505
3705-001242 CON101
3709-001298 CN500
3710-002115 CN300
3711-005487 CN600
3722-002067 EAR500
4302-001157 BAT400
4-2

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5. SGH-X460 BlockDiagrams
5-1
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1.RFSolutionBlockDiagram
10
0kHz+fmod
REFIN VTCX
O
pi -
PAD
pi -
PAD
I+
fmod
I-
Q+
Q-
~
~
pi -
PAD
FUJITSU EGSM RX SAW Filter
FAR-F5EB-942M50-B28C
IL=2.7dB max
Ripple=1.7 dB max
Vcc_RF_VCO
Discrete
3rd Order
Loop Filter
MURATA
TX VCO
MQW510C869M
GSM = 824 ~ 915 MHz
(Vt=0.5V ~ 3.0 V )
DCS = 1710 ~ 1910 MHz
(Vt=0.5V ~ 3.0 V )
Harmonics <= -15dBc
RFMD PAM
RF3146
Discrete
3rd Order
Loop Filter
RXON
Vcc_Tx_BURST
GSM IN
HITACHI METAL ANT SWITCH
SHS-C090F
Imax = 10 mA
Freq (MHz)Loss
880 - 915 1.5 dB
925 - 960 1.0 dB
1710 -1785 1.5 dB
1805 -1880 1.1 dB
Atten 2xfo : 24dB,25dB(GSM,DCS)
3xfo : 24dB,25dB(GSM,DCS)
EN
CLK
DATA
DCS S/W
OFFSET Mixer input power
-16dBm max, -22dBm min
fcompRF=26MHz
Philips Transceiver
UAA3536
Pins IA,IB,QA and QB
VI
Q: 1.25V ty p. , 1.15Vmi n, 1.35Vmax
Vmod : 0.5Vp
p
VC1 VC2
QUA
D
FUJITSU DCS RX SAW Filter
FAR-F6EB-1G8425-B2BC
IL= 3.3dB max
Ripple= 2.0dB max
DIV
PFD
CP
VREG
~
Vcc_RF_LO
Frac
N
DIV
1:1/2
VREG
26MH
z
Vcc_REF(2.4V typ.)
Vcc_SYN
FESW1
FESW2
3W
BUS
CT
LRE
G
PWR
EN
GSM/DCS
DIV
QUA
D
PFD
CP
fTXIF
60/114MHz
+I OUT
-I OUT
-Q OUT
+Q OUT
FESWON
SYNON
TXON
GSM S/W
PMU
HV
SVDD1 (1.35V min 2.95V max , 150mA )
VBat (3.6V typ 3.0V min)
V_MODE
RF1_VDD
RF2_VDD
RF1_VDDS
RF2_VDDS
VDD2 (1.35V min 3.45V max , 150mA )
VDD3 (1.35V min 3.45V max , 100mA )
VDD4 (1.35V min 3.45V max , 150mA )
AVDD(1.35V min 2.65V max , 100mA )
VCC_RX_TX (2.7V ,100mA )
VCC_SYN (2.7V , 100mA )
VCC_RF_VCO (2.70V , 100mA )
VCC_CP (4.0V , 25mA )
VCC_TX_BURST(2.7V , 100mA )
PON_SYNT
PON_TX
VRAMP
TX ENABLE
BAND SELECT
DCS IN
VBAT
Pout= 4.0~9.5dBm typ.,Ic <= 25mA
REF_13M
FESW1
FESW2
GSM: Pout = 35.0 dBm E = 60%
DCS: Pout = 33.0 dBm E = 55%

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BlockDiagrams
5-2
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2.Base Band SolutionBlockDiagram
Battery
Type
Battery
Voltage
Battery
Temperature
AFC
RAMP
Charging
Circuit
Li-Ion Battery
(Slim)
OM6357
VIBRATOR
SYSTEM CLOCK
(26MHz)
RTC_CLOCK
(32.768KHz)
KEY_BOARD
RECEIVER
MIC
LCD
RF INTERFACE VCC_RX_TX
VCC_RF_VCO
VCC_TX_BURST
PMU
VCC_SYN
Serial Data
Interface
I/O
Interface
A/D
Interface
BB INTERFACE
MELODY IC
(40 Poly)
SPEAKER
FLASH
(256M bit)
VDD1
VDD2
VDD3
VDD_VIB
MIC_BIAS
VCC_CP
VDD_KEY
VDD_AMP
AVDD
AVDD_TEMP
SIM CARD
SRAM
(32M bit)

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6. SGH-X460 PCB Diagrams
6-1
ThisDocumentcan notbe used withoutSamsung'sauthorization
1.MainPCB TopDiagram

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PCB Diagrams
6-2
ThisDocumentcan notbe used withoutSamsung'sauthorization
2.MainPCB BottomDiagram

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7. SGH-X460 FlowChart of Troubleshooting
7-1
ThisDocumentcan notbe used withoutSamsung'sauthorization
1. Power On
ChecktheBatteryVoltage
ismorethan3.4V
'PowerOn'doesnotwork
ChangetheBattery
END
No
Yes
C410(V_ISUP)=2.7V?CheckthePMUrelated toV_ISUP
No
Yes
ChecktheClockat
R402=32KHZResolderX1
No
Yes
C427 (VDD1)="H"?ChecktheVDD1circuit
No
Yes
C426(VDD2)&C425(VDD3)
=2.8V?ChecktheVDD2,VDD3circuit
No
Yes
CheckfortheclockatC121
=26MHzChecktheclockgenerationcircuit
(related toOSC101)
No
Yes
Checktheinitialoperation
Yes
Yes

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FlowChartofTroubleshooting
7-2
ThisDocumentcan notbe used withoutSamsung'sauthorization
12C
CONTROL
OSCILLATO
R
statu
s
ON-CHI
Preference
CHARGE
INTERFACE
htmp
AVDD
calibration
(CHARGE
ON/OFF
PLL
REAL-TIME
VBAT
refgnd
PUMP
+
VIB
supply
SIM_VCC
MONITOR
DVDD1
HIGH VOLTAGE
data
DVDD3
CONTROL
PMU (IC)
CONTROL
BACKLIGHT
LINREG
)
INTERFACE
REFERENCE
INTERRUPT
32KHz XTA
L
SWITCH SENSOR
Baseband power supply
SUPPLY
DVDD2
bias current
s
ovdd
VOLTAGE
SIM_IO
RF power supply
Baseband power supply
DVDD4
htmp
BATTERY
MIC BIAS
SUPPLY
LINREG
GENERATOR
clocks
GENERATO
R
SIM_CLK
control
SI
M
SIM_RST
&
RF power supply
INTERNAL
internal
MODULE
SIM
TEMP HIGH
voltage
CLOCK
CHARGE
PUM
P
HFA
SUPPLY &
SI
M
internal
32K
CLOCK
100N
F
ZD402
uClamp0501H
C428
ZD401 uClamp0501H
VDD1
C420
1UF
100N
F
C414
ML414R-F9GE BAT400
2
1
V_ISU
P
C421
1UF
VBAT
4.7U
F
C402
VCC_CP
VDD_3V05
R401 10K
L400
BLM11A102SPT
9PF
C407
C431 33PF
C424
1U
F
F6
VSS8
VSS9
G6
10NF
C405
F5
VSS2
D4
VSS20
VSS21
C4
F4
VSS3
G4
VSS4
J3
VSS5
G5
VSS6
VSS7
K5 F7
VSS12
VSS13
E6E7
VSS14
VSS15
D7
C7
VSS16
VSS17
D6
E5
VSS18
VSS19
D5
K4 VBAT
C2
VCC
VIBVBAT
B3 A3
VIBVDD
H7
VPROG
E4
VSS1
G7
VSS10
VSS11
G8
SIMCLK
A2
SIMGND
SIMIO B8
A1
SIMSCN
B1
SIMSCP
B2
SIMVBAT
D1
0
SLPMOD
H5
TM
VBACK
J5 G9 RFVBAT
RSTC1
RSTO
D9
E3 SCL F2 SD
A
E9
SEL12RB
H4
SEL3RB
C6
F10 RF1SNS
RF1SW
S
E8 G10 RF1VDD F9 RF1VDD
S
H9 RF2SNS
E10 RF2SW
S
H10 RF2VDD J10 RF2VDD
S
NC
ONKEY
H3
OSC32I K8
OSC32OK9
K1
REC1
J2
REC2
K2
REC3
H8 REFC K6 REFGND
D8
HVSVDD
INT
C10
D2
IO
H6 ISUPA J4 ISUPD
J6 MICBIAS
1
NC
2
HFAVBAT
HFAVBAT
B5
HFAVDD
A6
B6
HFAVDD
B9
HVSGND
B10
HVSO
CA10
HVSSCN
C9
HVSSCP
C8
HVSVBAT
G3
DVDD2VBAT
H1
DVDD3
DVDD3
J1
H2
DVDD3VBAT
A4
DVDD4
F8
DVDD4ON
B4
DVDD4VBAT
A5
CHRREG
D3
CHRVBAT
C3
CLK
A9
CLK32
D1
CPRES
F1
DVDD1
F3
DVDD1VBAT
G2
DVDD2
DVDD2
G1 J8
AVDDVBAT
AVDDVBAT
J9
A8 BBMGN
D
C5 BBMSW B7 BLVBAT A7 BLVD
D
E1
CHRIV E2
U400
PCF50601ET1-N5
AUXON
K3
AVDD
J7 K7
AVDD
K10
AVDDS
C419
10U
F
VBAT
4.7UF
VDD3
VCC_RF_VCO
C406
10K
C401
100N
F
470N
F
R400
VDD_KEY
C422
1UF
C425
C415
2.2U
F
VBAT
VCC_SYN
VDD2
VBA
T
MIC_BIAS
VDD1
C413
4.7U
F
C418
100NF
C408
10UF
VBA
T
VDD_3V05
4.7PF C430
AVD
D
VBA
T
6.3V 10UF C429
G
9
10
G
VDD_VIB
VDD_AM
P
VBAT
1 2
2 33 44
5
5 66
G
7
8
G
PC-D6-A3-H3.0-S CN500
1
100N
F
C403
C410
470NF
VCC_RX_TX
1UF
C411
27PF
C432
C412 2.2UF
1U
F
C426
0 R403
V_ISUP
C423 10UF
6.3V
C417
100NF
C416
NC
AVDD_TEM
P
2
1
1UF
C427
VCC_TX_BURST
X1
FC-135 (0.032768MHz
)
C404 100N
F
10M
R402
C409
9PF
BACKLIGH
T
ONKEY_N
IT_PM
U
VI
B
32K
CHARGER_O
K
SIMCLK
V_MOD
E
SD
A
SCL
RSTO
N
PON_TX
PON_SYN
JIG_REC
JACK_IN
RECO
1
REF_O
N
SIMI
O