Samsung SGH-P400 User manual

SGH-P400
SERVICE
Manual
GSMTELEPHONECONTENTS
1.Specification
2.CircuitDescription
3.FlowChartofTroubleshooting
4.ExplodedViewsand PartsList
5.ElectricalPartsList
6.BlockDiagrams
7.PCB Diagrams
GSMTELEPHONE

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1. SGH-P400 Specification
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1-1
GSM900
Phase1EGSM900 Phase2DCS1800 Phase1PCS1900
Freq.Band[MHz]
Uplink/Downlink 890~915 935~960 880~915 925~960 1710~1785 1805~1880 1850~1910 1930~1990
ARFCNrange1~124 0~124 &
975~1023 512~885 512~810
Tx/Rxspacing 45MHz45MHz95MHz80MHz
Mod.Bit rate/
Bit Period 270.833kbps 3.692us270.833kbps 3.692us270.833kbps 3.692us270.833kbps 3.692us
TimeSlot
Period/FramePeriod 576.9us 4.615ms576.9us 4.615ms576.9us 4.615ms576.9us 4.615ms
Modulation 0.3GMSK0.3GMSK0.3GMSK0.3GMSK
MS Power33dBm~13dBm33dBm~5dBm30dBm~0dBm30dBm~0dBm
PowerClass 5pcl~15pcl5pcl~19pcl0pcl~15pcl0pcl~15pcl
Sensitivity-102dBm-102dBm-100dBm-100dBm
TDMAMux 8 8 8 8
Cell Radius35Km35Km2Km-
1. GSMGeneralSpecification

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SGH-P408 Specification
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1-2
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
TXPower
control levelPCS1900
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-P400 Circuit Description
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2-1
1.SGH-P400 RFCircuitDescription
1)RXPART
1.ASM(U1005)
ð510SwitchingTx,RxpathforGSM900,DCS1800 andPCS1900 bylogic
controlling.
2.ASMControlLogic(U701,U702,U703)
ðTruthTable
VC1VC2VC3
GSMTxMode HL L
DCS/PCSTxMode LHL
PCSRxMode L L H
GSM/DCSRxMode L L L
3.FILTER
Toconvert ElectromagneticFieldWavetoAcousticWaveandthenpass the
specificfrequencyband.
-GSMFILTER (C1003,C1004,L1001)
ðForfilteringthefrequencyband between925 ~960 MHz
-DCSFILTER (C1005,C1006,L1002)
ðForfilteringthefrequencyband1805 and1880 MHz.
-PCS SAWFILTER (F1003,C1009,C1010,L1006)
ðForfilteringthefrequencyband between1930 and1990 MHz
4.TC-VCXO(OSC801)
To generatethe13MHzreferenceclocktodrivethelogic andRF.
Afteradditionalprocess,thereferenceclockisapplied totheU900 RxIQ
demodulatorandTxIQmodulator.
TheoscillatorforRXIQdemodulatorandTxmodulatorarecontrolled by
serialdatatoselectchannelandusefastlockmode forGPRShighclass
operation.

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5.Si4200 (U901)
Thischipintegratesthree differential-input LNAs.
TheGSMinputsupportstheE-GSM,DCSinputsupportstheDCS1800,PCS
inputsupportsthePCS1900.TheLNAinputsarematched tothe200 ohm
differentialoutputSAWfiltersthrougheternalLCmatchingnetwork.
Image-rejectmixerdownconvertstheRFsignaltoa100 KHzintermediate
frequency(IF)withtheRFLOfromSI4133Tfrequencysynthesizer.
TheRFLOfrequencyisbetween1737.8~1989.9MHz.
TheMixeroutputisamplified withananalog programmablegain
amplifier(PGA),whichiscontrolled byAGAIN.
ThequadratureIFsignalisdigitized with highresolutionA/Dconverts(ADC).
6.Si4201 (U900)
TheSI4201 down-convertsthe ADCoutput tobasebandwithadigital
100 KHzquadratureLOsignal.
DigitaldecimationandIIRfiltersperformchannelselectiontoremove blocking
andreferenceinterfacesignals.Afterchannelselection,the digitaloutputis
scaled withadigitalPGA,whichiscontrolled withtheDGAIN.DACsdrivea
differentialanalog signalontotheRXIP,RXIN,RXQP,RXQNpinstointerface
tostandardanalog-inputbasebandIC.
2)TXPART
BasebandIQsignalfed into offsetPLL,thisfunctionisincluded inside
ofU902 chip.
SI4200 chipgeneratesmodulatorsignalwhich powerlevelisabout1.5dBm
andfed intoPowerAmplifier(U1001).
ThePAoutputpowerandpower rampingarewell controlled byAuto
PowerControlcircuit.WeuseoffsetPLL below,
Modulation
Spectrum
200kHzoffset
30 kHzbandwidth
GSM-35dBc
DCS -35dBc
PCS -35dBc
400kHzoffset
30 kHzbandwidth
GSM-66dBc
DCS -65dBc
PCS -66dBc
600kHz~1.8MHzoffset
30 kHzbandwidth
GSM-75dBc
DCS -68dBc
PCS -75dBc

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2.BasebandCircuitdescriptionofSGH-P400
1)PSC2106 &LTC1734
1.PowerManagement
Sevenlow-dropout regulatorsdesigned specificallyforGSMapplications
power theterminalandhelpensureoptimalsystemperformanceandlong
batterylife.
Aprogrammable boostconverterprovides support for1.8V,and3.0VSIMs,
whileaself-resetting,electronicallyfused switchsuppliespower toexternal
accessories.Ancillarysupport functions,suchasanLEDdriverandtwo
call-alert drivers,aidinreducingbothboardarea andsystemcomplexity.
Athree-wireserialinterfaceunit(SIU)providesaccess tocontroland
configurationregisters.Thisinterfacegivesamicroprocessorfull controlof
thePSC2106 and enables systemdesignerstomaximize bothstandbyand
talk times.
Supervisoryfunctions.includingaresetgenerator,aninputvoltagemonitor,
andathermalmonitor,support reliablesystemdesign.Thesefunctions
worktogether toensurepropersystembehaviorduringstart-uporinthe
eventofafaultcondition(lowmicroprocessorvoltage,insufficientbattery
energy,orexcessive dietemperature).
2.Battery ChargeManagement
A batterychargemanagementblockprovidesfast,efficientcharging ofa
single-cell Li-ionbattery.Used inconjunctionwitha current-limited voltage
sourceandanexternalPMOSpass transistor,thisblocksafelyconditions
near-deadcellsandprovidestheoptionofhavingfast-chargeandtop-off
controlled internallyorbythesystem'smicroprocessor.
3.Backlight LED Driver
The backlight LEDdriversarelow-side,programmablecurrentsource
designed tocontrolthe brightness thekeyboardandLCDillumination.
LED1_DRViscontrolled viaLED1_[0:2]andcanbe programmed tosink
from mAto60mAin7.5mAsteps.LED2_DRViscontrolled viaLED2_[0:2]
andcanbe programmed tosinkfrom5to40mAin5mAsteps.BothLED
driversarecapableofsinkingtheirmaximum outputcurrentataworst
worstcasemaximum outputvoltageof0.6V.Forefficientuse,theLEDs
should be forwardconnected betweenthemabatteryandtheir
correspondingLEDdriveroutput.

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2)Connector
1.LCDConnector
LCDisconsisted ofmainLCD(color65KTFDLCD).Chipselectsignalsof
EMIpart inthetrident,CAM_CLCD_EN,
canenablemainLCD.LED_ENsignalenableswhiteLEDofmainLCD.
This signalisfrom IOpart oftheDSPinthetrident.RSTsignalfrom2106
initiatestheinitialprocess oftheLCD.
16-bitdatalines(D(0)~D(15)) transfersdata andcommandstoLCDthrough
emi_filter.Data andcommandsuse A(2)signal. Ifthis signalishigh,Inputs
toLCDarecommands.Ifitislow,InputstoLCDare data.Thesignal
whichinformstheinputoroutputstatetoLCD,isrequired.But this system
isnotnecessarythis signal. SoCP_WENsignalisused towrite dataor
commandstoLCD.
Powersignalsfor LCDareV_batandV_ccd.
SPK1PandSPK1NfromCSP1093 areused foraudiospeaker.AndVIB_EN
fromenablesthemotor.
2.JTAGConnector
TridenthastwoJTAGportswhichareforARMcoreandDSP
core(DSP16000).Sothis systemhastwoport connectorfor theseports.
Pins'initialsforARMcoreare'CP_'andpins'initialsforDSPcoreare
'DSP_'.
CP_TDIandDSP_TDIsignalareused forinputofdata.CP_TDOand
DSP_TDOsignalsareused for theoutputofthe data.CP_TCKand
DSP_TCKsignalsareused forclockbecauseJTAGcommunicationisa
synchronous.CP_TMSandDSP_TMSsignalsaretestmode signals.The
difference betweentheseistheRESET_INTsignalwhichisforARMcore
RESET.
3.IRDA
This system usesIRDAmodule,HSDL_3201,HP's.Thishas signals,
IRDA_EN(enablesignal),IRDA_RX(inputdata)andIRDA_TX(outputdata).
Thesesignalsareconnected toPPIoftrident.Itusestwopowersignals.
V_ccdisused forcircuitandV_batisused for LED.
3)IFconnetor
Itis18-pinconnector.Theyare designed touseSDS,DEBUG,DLC-DETECT,
JIG_ON,VEXT,VTEST,VF,CF,VBATandGND.Theyconnected topower
supplyIC,microprocessorandsignalprocessorIC.

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4)Audio
AOUTAPfromCSP1093 isconnected tothemainspeaker.AOUTANis
connected tothespeakervia audio-amp.AOUTBNand AOUTBPareconnected
tothe ear-micspeakerviaear-jack. MICINandMICOUTareconnected tothe
mainMIC.And AUXINand AUXOUTareconnected totheEar-mic.
YMU762MA3isaLSIforportabletelephonethatiscapableofplayinghigh
qualitymusicbyutilizingFMsynthesizerand ADPCMdecorder thatare
included inthisdevice.
Asasynthesis,YMU762MA3isequipped 16 voiceswithdifferenttones.Since
the deviceiscapableofsimultaneouslygeneratinguptosynchronouswiththe
playoftheFMsynthesizer, various sampled voicescanbe used as sound
effects.
SincetheplaydataofYMU762MA3areinterpreted atanytimethroughFIFO,
thelengthofthe data(playingperiod)isnotlimited,sothe devicecan
flexiblysupport applicationsuchasincomingcall melodymusicdistribution
service.Thehardwaresequencerbuiltinthisdeviceallowsplaying ofthe
complexmusicwithoutgivingexcessiveloadtotheCPUoftheportable
telephones.Moreover,theregistersoftheFMsynthesizercanbe operated
directlyfor realtimesoundgeneration,allowing,forexample,utilizationof
various sound effectswhenusingthegamesoftwareinstalled intheportable
telephone.
YMU759 includesaspeakeramplifierwith highrippleremovalratewhose
maximum outputis550mW(SPVDD=3.6V).The deviceisalsoequipped with
conventionalfunctionincludingavibartoranda circuitforcontrollingLEDs
synchornouswithmusic.
For theheadphone,itisprovided withastereophonicoutput terminal.
For thepurposeofenablingYMU762MA3todemonstarteitsfull capablities,
Yamahapurposetouse"SMAF:SyntheticmusicMobile ApplicationFormat"asa
datadistributionformat thatiscompatiblewihtmultimedia.SincetheSMAF
takesastructurethatsetsimportanceonthesynchronizationbetweensound
andimages, variouscontentscanbe writtenintoitincludingincomingcall
melodywithwordsthatcanbe used for traningkaraoke,andcommercial
channelthatcombinestexts,imagesandsounds,andothers.Thehardware
sequencerofYMU762MA3directlyinterpretsandplaysblocksrelevant to
systhesis(playingmusic andreproducingADPCMwithFMsynthesizer)thatare
included indatadistributed inSMAF.
Thevibratormotordriverisalow-side,programmablevoltagesource designed
todriveasmall dcmotor thatsilentlyalertstheuserofanincomingcall. The
driverisenabled byEN_VIB,anditsvoltagesettingisdetermined byVIB[0:2].
Provided EN_VIBisalogic1,the drivercanbe programmed tomaintaina

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motorvoltageof1.1Vto2.5Vin20mVstepsandwhilesinkingupto100mA.
Forefficientuse,thevibratormotorshould be connected betweenthemain
batteryandtheVIB_DRVoutput.
5)Memory
This system usesSHARP'smemory,LRS1828A.
Itisconsisted of128Mbitsflashmemoryand32MbitspsuedoSRAM.Ithas
16 bitdataline,D[0~15]whichisconnected totrident,LCDorCSP1093.It
has22 bitaddress lines,A[1~22].Theyareconnected too.CP_CSROMENand
CO_CSROM2ENsignals,chipselectsignalsinthetridentenabletwomemories.
Theyuse3voltsupplyvoltage,V_ccdand1.8voltsupplyvoltage,Vcc_1.8ain
thePSC2106.Duringwrtingprocess,CP_WENislowanditenableswriting
process toflashmemoryandpseudoSRAM.Duringreadingprocess,CP_OEN
islowanditoutputinformationwhichislocated at theaddress fromthe
tridentintheflashmemoryorSRAMtodatalines.Eachchipselectsignalsin
thetridentselectmemoryamong2flashmemoryand2SRAM.Reading or
writingprocedureisprocessed afterCP_WENorCP_OENisenabled.Memories
useFLASH_RESET,whichisbuffered signalofRESETfromPSC2106,forESD
protection.A[0]signalenableslowerbyteofpseudoSRAMandUPPER_BYTE
signalenableshigherbyteofpseudoSRAM.
6)Trident
Tridentisconsisted ofARMcoreandDSPcore.Ithas20K*16bitsRAM
144K*16bitsROMintheDSP.Ithas4K*32bitsROMand2K*32bitsRAMinthe
ARMcore.DSPisconsisted oftimer,one bitinput/outputunit(BIO),JTAG,EMI
andHDS(HardwareDevelopmentSystem).ARMcoreisconsisted ofEMI,
PIC(ProgrammableInterruptController),reset/power/clockunit,DMAcontroller,
TIC(TestInterfaceController),peripheralbridge,PPI,SSI(SynchronousSerial
Interface),ACC(Asynchronouscommunicationscontrollers),timer,ADC,
RTC(Real-TimeClock)andkeyboardinterface.
DSP_AB[0~8],address linesofDSPcoreandDSP_DB[0~15],datalinesof
DSPcoreareconnected toCSP1093.A[0~20],address linesofARMcoreand
D[0~15],datalinesofARMcoreareconnected tomemory,LCDandYMU759.
ICP(InterprocessorCommunicationPort)controlsthecommunicationbetween
ARMcoreandDSPcore.
CSROMEN,CSRAMENandCS1NtoCS4Ninthe ARMcoreareconnected to
eachmemory.WENand OENcontroltheprocess ofmemory.External
IRQ(InterruptReQuest)signalsfromeachunits,suchas,YMU,Ear-jack,
Ear-mic andCSP1093,need thecompatibleprocess.

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2-7
SomePPIpinshasmanyspecialfunctions.CP_KB[0~9]receivethestatus
fromkeyFPCB andareused for thecommunicatiosusing
IRDA(IRDA_RX/TX/EN)and datalink
cable(DEBUG_DTR/RTS/TXD/RXD/CTS/DSR).AndUP_CS/SCLK/SDI,control
signalsforPSC2006 areoutputted through PPIpins.Ithas signalport for
charging(CHG_DET,CHG_STAT0),SIM_RESETandFLIP_SNSwithwhichwe
knowsopen.closed statusof folder.IthasJTAGcontrolpins(TDI/TDO/TCK)
forARMcoreandDSPcore.It recieves13MHzclockinCKIpinfromexternal
TCXOandreceives32.768KHzclockfromX1RTC.ADC(Analog toDigital
Convertor)part receivesthestatusoftemperature,batterytypeand battery
voltage.Andcontrolsignals(DSP_INT,DSP_IOandDSP_RWN)forDSPcoreare
used.ItenablesmainLCDandsmall LCDwith DSPIP pins.

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2-8
7)CSP1093
CSP1093 integratesthetimingandcontrolfunctionsforGSM2+mobile
applicationwiththe ADCandDACfunctions.TheCSP1093 interfacestothe
trident, viaa16-bitparallelinterface.Itservesastheinterfacethatconnects
aDSPtotheRFcircuitryinaGSM2+mobiletelephone.DSPcanload148
bitsofburstdataintoCSP1093’s internalregister,andprogramCSP1093’s
event timingandcontrolregisterwiththe exact timetosendthe burst.When
thetimingportionofthe event timingandcontrolregistermatchestheinternal
quarter-bitcounterandinternalframecounter,the148 bitsintheinternal
registerareGMSKmodulated accordingtoGSM2+standards.Theresulting
phaseinformationistranslated intoIandQdifferentialoutputvoltagesthatcan
be connected directlytoanRFmodulatorat theTXOPandTXONpins.The
DSPisnotified whenthetransmissioniscompleted.For receivingbaseband
data,aDSPcanprogramCSP1093’s event timingandcontrolregisterwiththe
exact timetostart receivingIandQsamplesthroughTXIPandTXINpins.
Whenthat timeisreached,thecontrolportionofthe event timingandcontrol
registerwill start the basebandreceivesectionconvertingIandQsample
pairs.Thesamplesarestored inadouble-buffered registeruntiltheregister
contains32 samplepairs.CSP1093 then notifiestheDSPwhich hasampletime
toreadtheinformationoutbeforethenext32 samplepairsarestored.The
voice band ADCconverterissuesaninterrupt totheDSPwheneveritfinishes
convertinga16-bitPCMword.TheDSPthenreadsthenew inputsampleand
simultaneouslyloadsthevoice bandoutputDACconverterwithanewPCM
outputword.Thevoice bandoutputcanbe connected directlytoaspeakervia
AOUTANand AOUTAP pinsandbeconnected toaEar-micspeakervia
AOUTBNand AOUTBP pins.
8)X-TAL(13MHz)
This system usesthe13MHzTCXO,TCO-9141B,Toyocom.AFCcontrolsignal
formCSP1093 controlsfrequencyfrom13MHzx-tal. Itgeneratestheclock
frequency.Thisclockisfed toCSP1093,Trident,YMU759 andSilabsolution.

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3. SGH-P400 FlowChart of Troubleshooting
3-1
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1.Power On
Currentconsumption
>=100mA
'PowerOn'doesnotwork
Voltage>= 3.3V
Downloadagain
ChargetheBattery
pin#11 >= 2.8VCheckU100 andC117
pin#39 andpin#42 =
2.8V
CheckU100 andC116
Freq=13MHz,
Vrms≥300mV
and
Vpp =900mVpp
Checktheclockgeneration
circuit
(related toOSC801)
END
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
pin#9=1.8VNo
Yes
ChecktheVbat.Voltage
CheckthepinofU100
Checktheclocksignalatpin#3of
OSC801
Checktheinitialoperation
Checkthecurrent
consumption

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SGH-P400 FlowChartofTroubleshooting
3-2
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VBAT
M1
NEG
2
POS
1
1UF
C109C108
1UF
1UF
C117C116
1UF
10V
10UF
C119
1.2K,1%
R103
R102
330K
33 4 4
55
6
6
7
GG
89
GG
10
VRTC
CN100
11
22
C113
100PF
VCCD
C102
2.2UF
R111
10K,1%
C115
10NF
NC
R110
100NF
C100
VRTC
NC
R101
C101
33PF
C103
33PF
C104
33PF
3
1
2
5
6
4
Q101
1UF
VRF VPAC
C111 C112
470NF
C110
1UF
10UF
C118
6.3V
0
R108
10K,1%
R112
3K
R109
33
42
VLDO_6
40
VLDO_7
VREF
30
VRTC 12
VSI M
48
36
VL4S_A
VL4S_B35
32
VL5S_A
VL5S_B31
VLDO_1 9
VLDO_2 11
39
VLDO_3
VLDO_4 37
VLDO_5
3VBAT
2
10
VDD12
VDD34 38
VDD5 34
VDD67 41
1VEXT
VIB_DRV
4
15
SDO
16
SIM_CL K
50 51
SIM_IO
49
SIM_RST
53 UP_CLK
UP_IO
52
UP_RST
54
VACC
PWR_KEEP
PWR_SW1N
46
47 PWR_SW2
RESETN19
5
RING_DRV
RING_PWM
55
13RTC_ALMN
SCLK
17
SDI
59
60 GNDG
GNDD1
628
GNDQ
14 INTRQ
7
LED1_DRV LED2_DRV
8
PSW1_BUF
20
21
22 EN_3
EN_4[0]
23
24 EN_4[1]
EN_5
25
26 EN_5A
EN_5B
27
GND
57
58 GND
GND
ADC_AUX1
44
45 ADC_AUX2
56 ADC_TRIG
BTEMP
43
29
CREF
18 CSN
R105
10
U100
R1130
C105
VCCA
2
VCCD
1UF
Q102
1
3
VCCB
C106
100NF
C114
VCC
3
VSENSE
5
VCC_1.8A
2.2UF
U101
6
DRIVE
2
GND
ISENSE
1
4
PROG
2
VOSC
VBAT
VBAT
Q100
1
3
U102
2
5
6
3
1
4
R107
VBAT
TA_VEXT
CHG_DET
BACKLIGHT_2
47K,1%
UP_SCLK
UP_CS
RST
KEY_ROW(0)
KEY_COL(2)
EN_VRF
EN_VPAC
JIG_ON
SIMCLK
SIMRST
CHG_ON
ICHRG
TA_VEXT
XOENA
BACKLIGHT_1
PWR_KEEP
PWR_ON
RTCALARM
UP_SDI
SIMDATA
VREF
TA_VEXT

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SGH-P400 FlowChartofTroubleshooting
3-3
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2.Initial
Thepin#9ofU100 =
1.8Vand
thepin#11 ofU100 =
2.825V?
InitializationFailure
ChecktheU100
(Ifithas someproblem,ithastobe
replaced.)
END
No
Yes
Isthepin#19 of
U100
"Low-> High"?
Yes
ChecktheU601
Thereis32.768kHz
waveformsat theC614
andC616
ChecktheLCDPart
Yes
No
No
Yes
Yes
Yes
TheVoltageis"High"
at theC110,C111,
C112
ChecktheAudioPart
No
ChecktheU100
(Ifithas someproblem,ithastobe
replaced.)
ChecktheU700
Thepin#25 ofU100 is
"High"
ChecktheU100
LCDdisplayisO.KNo
No
Yes
Yes
SoundisO.KNo

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SGH-P400 FlowChartofTroubleshooting
3-4
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33PF
C227
C208
33PF
C219
33PFC223 33PF
C235
100PF
33PF
C203 33PF
33PF
C222
VCCB
C20433PF C215
TP210
C213
33PF
34
34
44
5
5
66
7
7
88
9
9
27 27
28
28
29 29
3
3
30
30
31 31
32
32
33 33
2220
20
21 21
22
22
23 23
24
24
25 25
26
26
12
12
13 13
14
14 15
15
16 16
17
17
18
18
19 19
CN200
1
1
10 10
11
11
C202
1NF
TP209
TP207
TP208
100PF
TP206
C207
C238
C218
33PF
33PF
C216
33PF
C228
33PF
R200 10
C236
100PF
C205
10NF
TP204
TP205
33PF
C229
33PF
C206C 209
TP201
33PF
TP203
33PF
C201
330NF
1UF
C231
C224
11
GND3
NC
2
RXD
6
5SD
9
SHIELD
7TXD
3VC C
8VLED
LED200
AGND
4
1GND1
GND2 10
100PF
C234C233
100PF
VBAT
VCCD
33PF
C210
C237 C241
100PF100PF C240C239 100PF1 00PF
C221
1NFC226 33PF
C220 33PF C225
33PF
33PF
C211
C232
C217
33PF
VCCD
1UF
TP200
C200
100NF
TP202
R205
033PF
C214C212
VBAT
C230
33PF
DSP_TDO
DSP_TDI
DSP_TMS
DSP_TCK
CP_WEN
EL_EN
33PF
CAM_D(3)
CAM_D(1)
SPK1N
YMU_VIB_EN
CAM_D(9)
CAM_D(11)
CAM_D(13)
CAM_D(15)
SVC_GREEN
SVC_BLUE
CP_TDO
RST
CP_TDI
CP_TMS
CP_TCK
CAM_OEN
CAM_D(0)
CAM_D(2)
CAM_D(4)
CAM_D(10)
CAM_D(6)
CAM_A
CAM_CLCD_EN
CAM_WEN
CAM_D(7)
CAM_D(5)
IRDA_RX
IRDA_EN
IRDA_TX
SPK1P
RST
SVC_RED
CAM_D(14)
CAM_D(12)
CAM_D(8)
LED_EN

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3.SimPart
IsthereanySignals
pin#52,#53,#54 of
U100?
"InsertSIM"isdisplayed ontheLCD
ChecktheU601
ChecktheSIMCard
END
No
Yes
Yes
Yes
NoChecktheU100
IsthereanySignals
pin#49,#50,#51 of
CN100?

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VBAT
DEBUG_TXD
SDS_RXD
BP_VF
DEBUG_DSR
DLC_DETECT
GND
JIG_ON
DEBUG_RTS
DEBUG_RXD
DEBUG_DTR
CF
VEXT
GND
GND
DEBUG_CTS
VEXT
SDS_TXD
DEBUG_DCD
DEBUG_RI
VTEST
19
20
VCCD
22
R300
47K
23
45
ZD302
6
ZD301
1
9
10
7
8
5
3
4
47K
R301
R3041 K
VCCD
1KR302
R307
220K
R3081 K
1KR305
100NF
C300
13
11
12
R303
123
45
1K
16
17
ZD300
15
2
ZD306
R306
CN300- 1
1
1K
ZD305 ZD307ZD304
VCCD
ZD303
18
14
21
ZD308
VBAT
TA_VEXT
DLC_DETECT
220NF
C301
SDS_RXD
JIG_ON
SDS_TXD
DEBUG_RXD
DEBUG_TXD
DEBUG_RI
BP_VF
DEBUG_CTS
DEBUG_RTS
DEBUG_DCD
DEBUG_DTR
DEBUG_DSR

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4.ChargingPart
Thepin#17,#18 of
CN300 isTA_VEXT
=5V?
Abnormalcharging operation
Thepin#3ofU102 is
"low"?
ReplaceTAorCheckCN300
ChecktheU102
ChecktheQ101
END
No
Yes
Yes
Yes
No
No
Thepin#3ofQ101 is
"low"?
Thepin#5ofU101 is
3.2~4.2V?ChecktheU101
No
Yes
TheICHRG=1V(during
charging)
and=180mV(full
charging)?
NoSolderagainorchangeR108
Yes

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EAR_SPK_P
JACK_IN
EAR_MIC_P
EAR_SPK_N
EAR_MIC_N
C401
120PF
C413
1NF
MAIN_MI C
NC
C405
100NF
C408
R404
82K
120K
R403
C4019
1NF
150PFC419
R421
56K
4.7NF
C421
C412
6.3V
4.7UF
100NF
C402
ZD403
R405
C416
33UF
33K
NC
C418
C403
22NF
R417
NC
R416
NC
R402
12
R401
12
ZD405
R400
100K
C410
NC
3.3K
R408
VBAT
10K
R407
R409
R411
680
NC
C415
56K
ZD402 ZD401
VCCA
220PF
C407
Q400
23
1
C400
VCCA
100NF
C420
8PF
C414
100NF
C404
4.7UF
1K
R419
6.3V
10K
R420
R410
18K
R418
3
/IRQ
/RD
31
/RST
4
28
/WR
2.2K
17
SPOUT 1 SPOUT 2
18
15
SPVDD
SPVSS
16
7
VDD
9
VREF VSS
8
/CS
29
EQ2
EQ3
14
HPOUT-L/MONO 10
11
HPOUT-R
IOVDD
32
LE D
2
19
MT R
5
NC PLLC
6
D1
25
D2 D3
24 23
D4 D5
22
D6
21
D7
20
EQ1
12
13
U401
30 A0
1
CLKI
D0
27
26
IN2
8
5
NC1
7NC2
NO12
NO2
10 1
V+
U400
3
COM1
9COM2
6GND
IN14
3
4
56
VCCD
CN401
1
2
VCCD
0
56K
R415 10KR414
R412
2.2K
R413
33PF
C411
1UF
C417
C4020
1UF
C409
150PF
C4018
1NF
VCCD
SPK1P
SPK1N
YMU_SPK1N
YMU_SPK1P
YMU_LED
CP_WEN
JACK_IN
AOUTBP
YMU_VIB_EN
AOUTAP
AOUTAN
AUDIO_AMP_EN
AOUTBN
D(4) D(3)
D(1)
D(0)
CP_OEN
A(0)
YMU_EN
AUXOUT
AUXIN
MICOUT
MICIN
EAR_SWITCH
D(2) YMU_SPK1P
CLK13M_YMU
YMU_SPK1N
YMU_IR Q
RST
D(5) D(6) D(7)

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5.MicrophonePart
Istheassembled status
ofmicrophoneO.K?
Microphone doesnotwork
C420 =2.0V
Reassemblethemicrophone
Solderthemicrophoneagainor
ReplaceC409,C416,R407,R409,R410,R411
END
No
Yes
Yes
Yes
Yes
No
microphoneok?NoCheckU700
Checkthereferencevoltageonmicpath
Yes