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Now downloading free: SAMSUNG SGH-2400 GMS.pdf GMS.pdf

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Cell phone, GSM, Satellite phone - Nokia, Siemens, Samsung mobiles service manuals and repair information

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File name:SAMSUNG SGH-2400 GMS.pdf
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File name SAMSUNG SGH-2400 GMS.pdf

DUAL BAND Mobile Cellular Phone SGH-2400 SERVICE 1 4 GHI 7PQRS 2ABC 5 JKL 8TUV 0 3 DEF 6MNO 9WXYZ RxEGSM (925~960MHz) GSMTX2 DCSTX2 GSM F301 SAW LNA RxEN_FEGSM U300 F302 SAW F300 BPF 246MHz DEMODEN VMID IRXP F305 O BPF VGA PLL RXLO2 259MHz 90 QRXP U301 TXEN1 RXLO3 13MHz U401 Q300 F303 SAW LNA RxEN_FEDCS U305 F304 SAW RXLO1GSM 1171.2~1205.8MHZ BANDSEL PLLEN DUAL PLL VCO Ref Osc REF 13MHz DCS RxDCS(1805~1880MHz) RXLO1DCS 2051.2~2125.8MHz Dip. DCSTX1 GSMTX1 EGSM:493~518MHz DCS:498~519MHz X2 TXEN1 QTX QTXI ITX ITXI DUAL VCO EGSM:1171.2~1216MHz DCS:2019.2~2125.8MHz TXEN1 GSMTX2 DCSTX2 GSMPAM U402 Dip. BPF Mod. TxEGSM(880~915MHz) U405 DUAL COUPLER TxDCS(1710~1785MHz) DET. X500 PA VCO LPF VCO PA U500 PDF 1/3 DCS:310.8MHz GSM:295.8MHz 1/5 BPF DCSPAM U408 OP amp X501 TXPOWER SYSTEM CLOCK GSM/DCS Memory VOCODER SIM Card Serial Data Interface +3V SIM Card +5V SIM Card I/O Interface SYSTEM RAM 4M B.B Interface A/D Interface Battery Voltage FLASH ROM 16M Battery Temperature I/O BB Filter GSM/DCS RF interface GSM PLL PLL 3V Tx Multi Switch Array GSM/DCS EEPROM 128K KERNEL 5 DCS PLL 8M ROM (Voice Recognition) GSM Tx DCS Tx Charging Circuit KeyPad POWER Circuit AVCC Graphic LCD (115*60) Li_lon Battery (3.6V) VCC RF PSU GSM PSU DCS PSU EMI FILTER CIRCUIT AC INPUT FIRST RECTIFIRE ISOLATION POWER TRANSFORMER SECOND RECTIFIRE FILTER DC INPUT P.W.M CONTROL POWER SWITCHING (MOS FET) FEED BACK ISOLATION OPTO COUPLER O.C.P CHOKE COIL INPUT 9V DC 2nd Regulator Filter FET Switch FRT 4.1V Reference Voltage LED Switching TR Circuit UVLO Overcurrent Protector Overheat Protector MPU Battery Type Detector Charge Voltage Detector Charge Voltage Selector Feed Back Static Current Circuit Static Voltage Circuit FET Switch REAR 4.1V TXPOWER DEMODEN DEMODEN ANT QRXP VMID IRXP ANT QRXP VMID IRXP CLK13M CLK13M TXEN1 TXEN2 RXEN_FEGSM RXEN_FEDCS SYNCLK SYNEN SYNDATA ITX +3VPLL ITX1 QTX QTX1 _BANDSEL +VBATT BANDSEL AVCC +VBATT +3VBB TXEN1 TXEN2 RXEN_FEGSM RXEN_FEDCS SYNCLK SYNEN SYNDATA ITX ITX1 QTX QTX1 _BANDSEL BANDSEL STARTUP_VOLTS +3VBB POWER_ON +VBATT RF_ON_OFF +3VMD +3VTX +3VLO1 +3VLO2 +3VDEMOD +3VDC +3VLNADCS +3VLNAGSM +3VX AVCC +3VMD +3VLO1 _RESET +3VLO2 +3VDEMOD +3V_RTC +3VDC +3VTX +3VLNADCS +3VPLL +3VLNAGSM +3VX _RESET STARTUP_VOLTS POWER_ON RF_ON_OFF _RESET +3V_RTC TXPOWER DCSTX2 GSMTX1 GSMTX2 GSMTX2 DCSTX1 DCSTX2 GSMTX1 DCSTX1 VAGC VAGC AFC AFC +3VLNAGSM +3VLNADCS +3VDC +3VDEMOD +3VLO1 +3VLO2 +3VPLL +3VX RXEN_FEGSM RXEN_FEDCS IRXP RXEN_FEGSM IRXP VAGC RXEN_FEDCS QRXP +3VLO1 +3VLO2 +3VPLL +3VX VAGC RXL01GSM RXL01DCS RXL01GSM RXL01DCS +3VLNAGSM RXL02 RXL02 +3VLNADCS RXL03 +3VDC CLK13M DEMODEN +3VDEMOD RXGSMIN +3VMD VMID QRXP VMID SYNCLK SYNDATA AFC SYNEN SYNCLK SYNDATA RXL03 AFC +3VMD +3VTX SYNEN RXDCSIN +3VTX TXL01 TXL02 _BANDSEL CLK13M _BANDSEL BANDSEL DEMODEN +VBATT DCSTX2 GSMTX2 +3VMD GSMTX1 DCSTX1 GSMTX1 DCSTX2 DCSTX1 GSMTX2 TXL01 BANDSEL TXEN1 TXL02 TXG

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