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GPRS TELEPHO N E
SGH- D500
GPRS TELEPHONE CONTENTS
1. Specification
2. Circuit Description
3. Exploded Views and Parts List
4. Electrical Parts List
5. Block Diagrams
6. PCB Diagrams
7. Flow Chart of Troubleshooting
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ⓒ Samsung Electronics Co.,Ltd. Nov. 2004 Printed in South Korea. This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable GH 68-05955A Code No.: International and/or domestic law. BASIC.
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1. GSM General Specification GSM900 EGSM 900 DCS1800 PCS1900 Phase 1 Phase 2 Phase 1 Freq. Band[MHz] 890~915 880~915 1710~1785 1850~1910 Uplink/Downlink 935~960 925~960 1805~1880 1930~1990 0~124 & ARFCN range 1~124 512~885 512~810 975~1023 Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz Mod. Bit rate 270.833kbps 270.833kbps 270.833kbps 270.833kbps / Bit Period 3.692us 3.692us 3.692us 3.692us Time Slot Period 576.9us 576.9us 576.9us 576.9us / Frame Period 4.615ms 4.615ms 4.615ms 4.615ms Modulatio
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2. GSM TX power class TX Power TX Power TX Power GSM900 DCS1800 PCS1900 control level control level control level 5 33 3 dBm 0 30 3 dBm 0 30 3 dBm 6 31 3 dBm 1 28 3 dBm 1 28 3 dBm 2 26 3 dBm 7 29 3 dBm 2 26 3 dBm 8 27 3 dBm 3 24 3 dBm 3 24 3 dBm 9 25 3 dBm 4 22 3 dBm 4 22 3 dBm 10 23 3 dBm 5 20 3 dBm 5 20 3 dBm 11 21 3 dBm 6 18 3 dBm 6 18 3 dBm 12 19 3 dBm 7 16 3 dBm 7 16 3 dBm 13 17 3 dBm 8 14 3 dBm 8 14 3 dBm 14 15 3 dBm 9 12 4 dBm 9 12 4 dBm 15 13 3 dBm 10 10
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1. SGH-D500 RF Circuit Description 1) RX PART 1. ANTENNA SWITCH (U100 SWICHPLEXER) Switching Tx, Rx path for GSM900, DCS1800 and PCS1900 by logic controlling. 2. ANTENNA SWITCH Control Losic (U100) Truth Table VC1 VC2 VC3 Tx Mode (GSM900) L H L Tx Mode (DCS1800/1900) L(H) L H Rx Mode (GSM900) L L L Rx Mode (DCS1800) L L L Rx Mode (PCS1900) H L L 3. FILTER To convert Electromagnetic Field Wave to Acoustic Wave and then pass the specific frequency band. - GSM FILTER (F100) For f
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2. Baseband Circuit description of SGH-D500 1. PCF50603 (U400) 1.1. Power Management Eight low-dropout regulators designed specifically for GSM applications power the terminal and help ensure optimal system performance and long battery life. A programmable boost converter provides support for 1.8V, 3.0V SIMs, while a self-resetting, electronically fused switch supplies power to external accessories. Ancillary support functions, such as RTC module and High Voltage Charge pump, Clock generator
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4. Key This is consisted of key interface pins KEY_ROW(0:4) and KEY_COL(0:4) in PCF5213EL1. These signals compose the matrix. Result of matrix informs the key status to key interface in the PCF5213EL1. Power on/off key is seperated from the matrix. So power on/off signal is connected with PCF50603 to enable PCF50603. Key LED is consisted of six white LEDs for sub key and twelve white LEDs for main key. White LED for sub key use the VBAT voltage. "SLIDER_KEY_ON" signal enables Transistor for
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10. PCF5213EL1 The PCF5213EL1 is mainly composed of embeded DSP and ARM core. The DSP subsystem includes the Saturn DSP core with embedded RAM and ROM, and a set of peripherals. It has 24kx16 bits PRAM, 104k*16 bits, 32k*16 XYRAM and 63k*16 XYROM in the DSP. The ARM946E-S consists of an ARM9E-S processor core, 8 kbyte instruction cache and 8 kbyte data cache, tghtly-coupled ITCM(Instruction Tightly Coupled Memory) and DTCM(Data Tightly Coupled Memory) memories, a memory protection unit, and
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QFU01 QKP02 QCA01 QSP01 QLC01 QCK01 QMP02 QME02 QPC01 QVO01 QIF01 QCR08 QKP01 QCR16 QMO01 QFL01 QMP01 QMI01 QME01 QCR11 QSC18 QCR11 QAN02 QSC16 QCR16 QRE01 QCR11 QBA19 SAMSUNG Proprietary-Contents may change without notice
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