Samsung SGH V206 User manual

SGH-V206
SERVICE
Manual
GSMTELEPHONECONTENTS
1.Specification
2.ExplodedViewsand PartsList
3.ElectricalPartsList
4.CircuitDescription
5.FlowChartofTroubleshooting
6.BlockDiagram
7.PCB Diagrams
GSMTELEPHONE

ELECTRONICS
Samsung ElectronicsCo.,Ltd.JUNE.2003
Printedin Korea.
CodeNo.:GH68-03704A
BASIC.
ⓒ
ThisServiceManual isa propertyofSamsung ElectronicsCo.,Ltd.
Anyunauthorized use ofManualcan bepunished underapplicable
Internationaland/ordomesticlaw.

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1. SGH-V206 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-V206 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-V206 ExplodedViewand its Partslist
2-1
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1.CellularphoneExplodedView
28
1
2
3
4
5
6
7
8
9
16
11
10
17
15
14
13 12
18
19
20 21
22
24
23
25
26 27

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SGH-V206 Explodedviewand its Partlist
2-2
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2.CellularphonePartslist
LocationNO.DescriptionSEC CODE Remark
1DUALWINDOWLCDGH72-03934B
2FOLDER UPPER GH75-02355E
3MAINLCDGH07-00253A
3-1DUAL LCDGH07-00251A
4MOTOR3101-001295
5SPEAKER 3001-001297
6FOLDER LOWER GH75-02354A
7SCREW6001-001478
8SCREWCAPGH73-01052A
9WINDOWLCDGH72-05929A
10 CAMERAKNOBGH72-03941A
11 CAMERAFPCB GH59-00830A
12 CAMERASIDECOVER GH71-00719A
13 CAMERAPIECEGH72-03940A
14 CAMERAKNOBSUSGH71-00718A
15 SCREW6001-001611
16 FRONTCOVER GH75-02353A
17 VOLUMEKEYGH75-02358A
18 KEYPADGH75-02356D
19 DOMESHEETGH59-00629A
20 MAINPBAGH92-01476A
21 MICGH59-00626A
22 CONNECTORCOVER GH73-01069A
23 ANTENNAGH42-00248A
24 REARCOVER GH75-02357A
25 SCREW6001-001478
26 SCREWCAPGH73-01576A
27 RFCOVER GH73-01053A
28 BATTERYGH43-00724A900mA

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SGH-V206 Explodedviewand its Partlist
2-3
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3.TestJig(GH80-00001A)
3-1.RFTestCable
(GH39-00105A)3-2.TestCable (GH39-00122A)3-3.SerialCable
3-4.PowerSupplyCable3-5.DATACABLE
(GH39-00159A)3-6.TA (GH44-00184G)

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4. SGH-V206 Circuit Description
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1)RXPART
1.ASM(U1005)→Switching Tx,Rx pathforGSM900,DCS1800 and PCS1900 by logic controlling.
2.ASMControlLogic(U701,U702,U703)→TruthTable
VC1VC2VC3
GSMTxModeHL L
DCS/PCSTxModeLHL
PCSRxModeL L H
GSM/DCSRxModeL L L
3.FILTER
ToconvertElectromagneticFieldWavetoAcousticWave and then pass thespecificfrequency band.
-GSMFILTER(C1003,C1004,L1001)→For filtering thefrequency band between 925 ~960 MHz
-DCS FILTER(C1005,C1006,L1002)→For filtering thefrequency band 1805 and 1880 MHz.
-PCS SAWFILTER(F1003)→For filtering thefrequency band between 1930 and 1990 MHz
4.TC-VCXO (OSC801)
To generatethe13MHzreference clockto drivethelogic and RF.
Afteradditionalprocess,thereference clockappliestotheU900 RxIQdemodulatorand TxIQmodulator.
Theoscillator forRXIQdemodulatorand Txmodulatorare controlled by serialdatatoselectchanneland usefast lock
modeforGPRShigh class operation.
5.Si4200 (U901)
Thischipintegratesthree differential-inputLNAs.
TheGSMinputsupportstheE-GSM,DCSinputsupportstheDCS1800,PCSinputsupportsthePCS1900.TheLNA
inputsarematchedtothe200 ohmdifferentialoutputSAWfiltersthrough eternalLCmatching network.
Image-rejectmixerdownconvertstheRFsignal toa100 KHzintermediatefrequency(IF)withtheRFLOfromSI4133T
frequencysynthesizer.TheRFLOfrequencyisbetween 1737.8~1989.9MHz.
TheMixeroutput isamplifiedwithananalog programmablegainamplifier(PGA),whichiscontrolled by AGAIN.
ThequadratureIFsignal isdigitizedwith high resolution A/Dconverts(ADC).
6.Si4201 (U900)
TheSI4201 down-convertstheADCoutput to baseband withadigital100 KHzquadratureLOsignal.Digitaldecimation
and IIRfiltersperformchannelselection toremoveblocking and reference interface signals.
Afterchannelselection,thedigitaloutput is scaledwithadigitalPGA,whichiscontrolledwiththeDGAIN.DACsdrive
adifferentialanalog signalontotheRXIP,RXIN,RXQP,RXQN pinstointerface tostandardanalog-inputbaseband IC.

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SGH-V206 CircuitDescription
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2)TXPART
Baseband IQsignalfedinto offsetPLL,thisfunction isincludedinsideofU902 chip.
SI4200 chip generatesmodulatorsignalwhich powerlevel isabout1.5dBmand fedintoPowerAmplifier(U1008).
ThePAoutputpowerand power ramping arewell controlled by Auto
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
2. Baseband CircuitdescriptionofSGH-V200
1.PSC2006
1.1.PowerManagement
Sevenlow-dropoutregulatorsdesignedspecificallyforGSMapplicationspowertheterminaland helpensureoptimal
systemperformance and long batterylife.Aprogrammableboostconverterprovides supportfor1.8V,3.0V,and 5.0V
SIMs,while a self-resetting,electronicallyfusedswitchsuppliespowertoexternalaccessories.Ancillarysupportfunctions,
suchasanLEDdriverand twocall-alertdrivers,aidinreducing both boardarea and systemcomplexity.
Athree-wireserial interface unit(SIU)providesaccess tocontroland configuration registers.Thisinterface givesa
microprocessor full controlofthePSC2006 and enables systemdesignerstomaximize bothstandby and talktimes.
Supervisoryfunctions.including aresetgenerator,aninputvoltagemonitor,and athermalmonitor,supportreliablesystem
design.Thesefunctionsworktogethertoensurepropersystembehaviorduring start-up orinthe eventofafault
condition(lowmicroprocessorvoltage,insufficientbatteryenergy,orexcessivedietemperature).
1.2.BatteryChargeManagement
Abatterychargemanagementblock providesfast,efficientcharging ofasingle-cell Li-ion battery.Usedinconjunction
witha current-limited voltagesource and anexternalPMOSpass transistor,thisblocksafelyconditionsnear-deadcells
and providestheoption ofhaving fast-charge and top-off controlledinternally orby thesystem'smicroprocessor.
1.3.BacklightLED Driver
ThebacklightLEDdriverisalow-side,programmable currentsource designedtocontrol thebrightness ofthekeyboard
and LCDillumination.Thedriverisenabled by EN_LED,and itscurrentsetting isdetermined by LED[0:2].Provided
EN_LEDis‘1’,thedrivercan beprogrammedtosink from12.5mAto 100mAin 12.5mAsteps.LED_DRVis
capableofsinking 100mAataworst-casemaximumoutputvoltageof0.6V.Forefficientuse,theLEDsisconnected
betweenthebatteryand theLED_DRVoutput.

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SGH-V206 CircuitDescription
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1.4.VibratorMotorDirver
Thevibratormotordriverisalow-side,programmablevoltagesource designedto driveasmall dcmotorthatsilently
alertstheuserofanincoming call.Thedriverisenabled by EN_VIB,and itsvoltagesetting isdetermined by VIB[0:2].
ProvidedEN_VIBisalogic1,thedrivercan beprogrammedtomaintainamotorvoltageof1.1Vto 2.5Vin 20mV
stepsand whilesinking up to 100mA.Forefficientuse,thevibratormotorshould be connected betweenthemain battery
and theVIB_DRVoutput.
2.Connector
2-1.LCDConnector
LCDisconsisted ofmainLCD(color65KSTNLCD)and small LCD(4-grayLCD).ChipselectsignalsofEMIpart in
thetrident,CLCD_EN_FOand GLCD_EN_FO,canenableEachLCD.LED_EN_FOsignalenableswhiteLEDofmain
LCDand EL_EN_FOsignalenablesEL ofsmall LCD.ThesetwosignalsarefromIOpartoftheDSP inthetrident.
RSTsignalfrom2006 initiatestheinitialprocess oftheLCD.
16-bit datalines(D(0)_FO~D(15)_FO)transfersdata and commandstoLCDthrough emi_filter.Data and commandsuse
A(2)_FOsignal.If this signal ishigh,InputstoLCDare commands.If it islow,InputstoLCDaredata.Thesignal
whichinformstheinputoroutputstatetoLCD,isrequired.But this systemisnotnecessarythis signal.So
CP_WEN_FOsignal isusedtowritedataorcommandstoLCD.PowersignalsforLCDareV_batand V_ccd.
SPK1Pand SPK1NfromCSP1093 areusedforaudiospeaker.And VIB_EN_FOfromenablesthemotor.
2-2.JTAG Connector
TridenthastwoJTAG portswhichareforARMcore and DSP core(DSP16000).Sothis systemhastwo portconnector
fortheseports.Pins’initialsforARMcore are‘CP_’and pins’initialsforDSP core are‘DSP_’.CP_TDIand
DSP_TDIsignalareusedforinputofdata.CP_TDO and DSP_TDO signalsareusedfortheoutputofthedata.CP_TCK
and DSP_TCKsignalsareusedforclock becauseJTAG communication isasynchronous.CP_TMSand DSP_TMS
signalsaretestmodesignals.Thedifference betweentheseistheRESET_INTsignalwhichisforARMcoreRESET.
2-3.IRDA
This systemusesIRDA module,HSDL_3201,HP’s.Thishas signals,IRDA_EN(enablesignal),IRDA_RX(inputdata)
and IRDA_TX(outputdata).Thesesignalsare connectedtoPPIoftrident.Itusestwo powersignals.V_ccdisusedfor
circuit and V_bat isusedforLED.
2-4.Keypadconnector
Thisisconsisted ofkeyinterface pinsamong PPIinthetrident,KEY_ROW[0~4]and KEY_COL[0~4].Thesesignals
composethematrix.Result ofmatrixinformsthekeystatusto keyinterface inthetrident.Somepinsare connectedto
varistor forESDprotection.And poweron/off keyis seperatedfromthematrix.So poweron/off signal isconnectedwith
PSC2006 toenablePSC2006.SVC_GREEN,SVC_REDand SVC_BLUEarefromOCTL ofCSP1093.Thesesignals
decidethe colorofLED,service indicator.Eighteen keyLEDusetheV_batsupply voltage.These are connectedto
BACKLIGHTsignal inthePSC2006.This signalenablesLEDswithcurrentcontrol.FLIP_SNSinformsthestatusof
folder (open orclosed)tothetrident.Thisusesthehall effectIC,A3210ELH.AmagnetundermainLCDenables
A3210ELH whichison thekeyFPCB.