Samsung SGH-N500 Service Manual

Also see for SGH-N500: Owner's manual User manual

Samsung SGH-N500 Service Manual Manual pdf 26 page image

SGH-N500 Block Diagrams 4-34-2-1 RF Transmit PartU305HD155128TFAntennaS/WU304U108VP40575TXENRAMPDACBAND Selection- GSM : Low- DCS : HighITXPITXNQTXPQTXNLoopFilterTX VCOU200Dual PAMU312APC CircuitCoupler1531375U318U3188813 72540 MHzPCN : 1575 ~ 1650 MHz (Tx)GSM : 1150 ~ 1185 MHz4 14 11 1234538352019181730471068142521Ant. S/WControlCircuit3VTX TXEN2VC1 VC2 VC3VC3VC2VC1GSM(Tx)DCS(Tx)RxHHHLLLLL L11SI4133-MLP28U302VCTCXO13MHzU303IF VCO1080MHzPLL1PLL2RF VCOAFCDAC102315880 ~ 915MHz(EGSM)890 ~ 915MHz(PGSM)1710 ~ 1785MHz(DCS)HD155128TFU454AntennaS/WU203VP40553-2U647TXEN1RAMPDACBAND Selection- GSM : Low- DCS : HighITXPITXNQTXPQTXNLoopFilterTX VCOU200Dual PAMU476TXEN1BAND SelectionRAMPDAC171819203835304723111537106815425 31080 MHz3VTX TXEN24,958VC1 VC22 118RFConector(CN1)101080 MHzVCTCXO(13MHz)(U100)PLL1PLL2SI4133-XM2(U478) RF VCOIF VCOAPCIC (U611)VC2VC1Tx(DCS)Tx(GSM)RxHHLLL LAnt. S/WControlCircuit32DCS1710 ~ 1785 MHz(CH698 : 1747.4 MHz)EGSM880 ~ 915 MHz(CH62 : 902.4 MHz)EGSM : 1150 ~ 1185 MHzDCS : 1580 ~ 1655 MHz(Rx)1575 ~ 1650 MHz(Tx)123454CouplerCouplerU624U62534131