Samsung SCH-880 service manual, samsung service manuals schematy serwisowki
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//-->ELECTRONICCDMA PORTABLETELEPHONESCH-880SERVICEDUAL MODE TELEPHONEManualCONTENTS1. Specification2. Nam Programming3. Test Commands & Test Procedure List4. Test Procedure5. Exploded View & its Parts List6. Electrical Parts List7. Block Diagram8. PCB Diagram9. Schematic DiagramsELECTRONICSSamsung Electronics Co.,Ltd. Jun. 00Pinted in Korea.Code No.: GH68-012608A1. Specification1-1 GeneralITEMTx Freq. rangeRx Freq. rangeChannel BandwidthChannel SpacingNumber of ChannelDuplex SeparationType of EmissionIn/Output ImpedanceTx Intermediate Freq.Rx Intermediate Freq.Tx Local Freq.Rx Local FreqTCXO freq.Freq. StabilityOperating Temperature824 ~ 849MHz869 ~ 894MHz1.23MHz30KHz83245MHz40K0F8W,40K0F1D50Ω130.38MHz85.38MHz1st (FTX+130.38MHz)2nd (260.76MHz)1st (170.76MHz)2nd (FRX+85.38MHz)19.68MHz(FRX-45MHz)± 300Hz-30°C ~ +60°CCDMASupply VoltageSize and Weight3.6VSlim : 88mm X 50mm X 23.5mm,STD : 88mm X 50mm X 25.7mm,EXT : 88mm X 50mm X 27.5mm,105 g,135 g,151 g,500 mA1000 mA1600 mA1-1Samsung Electronics1-2 800MHz CDMA1) GeneralFrequency Range• Transmitter : 824 ~ 849 MHz• Receiver : 869 ~ 894MHzChannel Bandwidth : 1.23MHzChannel Spacing : 30kHzNumber of Channels : 832Duplex Seperation : 45 MHzType of Emission : 40K0F8W,40K0F1DInput/Output Impedance : 50ΩIntermediate Freequency• Transmitter : 130.38MHz• Receiver : 85.38MHzLocal Frequency• Transmitter : 1st(FTX+130.38MHz), 2nd(260.76MHz)• Receiver : 1st(FRX+85.38MHz), 2nd(170.76MHz)TCXO Frequency : 19.68MHzFrequency Stability : (FRX-45MHz) ± 300HzOperation Temperature : -30°C ~ 60°CSupply Voltage : +3.6V2) TransmitterWaveform Quality :0.944 or moreOpen Loop Power Control Range• -25dBm : -57.5dBm ~ -38.5dBm• -65dBm : -17.5dBm ~ +1.5dBm• -104dBm : +18.0dBm ~ +30dBmMinimum Tx Power Control : below -50dBmClosed Loop Power Control Range : ±24dBMaximum RF Output Power : 200mW(+23dBm)Occupied Bandwidth : 1.23MHzConducted Spurious Emission @900 KHz : -42dBc/30kHz@1.25 MHz : -54dBc/30kHz1-2Samsung Electronics3) ReceiverRx Sensitivity and Dynamic Range : -104dBm, FER=0.5% or less: -25dBm, FER=0.5% or lessConducted Spurious Emission• 869 ~ 894 MHz : <-81dBm• 824 ~ 849 MHz : <-61dBm• All Other Frequencies : <-47dBmSingle Tone Desensitization : lower than 1 %Rx power level= -101dBmTone power level = -30dBmTone offset from carrier = ±900 kHzIntermodulation Spurious Response Attenuation : lower than 1 %Rx power = -101dBmTone 1 power =-43dBmTone 2 power =-43dBmTone 1 offset from carrier = ± 900kHzTone 2 offset from carrier = ± 1.700MHzSamsung Electronics1-3
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