Samsung SCH-2500 series Service Manual Download

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SERVICE

PORTABLE CELLULAR
TELEPHONE

SCH-2500 Series

SAMSUNG Proprietary - Contents may change without notice

Manual

PORTABLE CELLULAR TELEPHONE

CONTENTS

General Introduction

Specification

Installation

Nam Programming

Circuit Description

Trouble shooting

Exploded Views and its Parts List

Electrical Parts List

PCB Diagrams

10. Block Diagrams

11. Circuit Diagram

Summary of Contents for SCH-2500 series

Page 1: ...ange without notice Manual PORTABLE CELLULAR TELEPHONE CONTENTS 1 General Introduction 2 Specification 3 Installation 4 Nam Programming 5 Circuit Description 6 Trouble shooting 7 Exploded Views and its Parts List 8 Electrical Parts List 9 PCB Diagrams 10 Block Diagrams 11 Circuit Diagram ...

Page 2: ...Samsung Electronics Co Ltd GH68 00621A 1999 9 Rev 1 0 ...

Page 3: ...Sl J STD 018 Recommended Minimum Performance Requirements for 1 8 to 2 0 GHz CDMA Personal Stations CDG Ref Document 27 High Rate Speech Service Option for Wideband Spread Spectrum Systems TlA ElA lS 95A Mobile Station Base Station Compatibility Standard for Dual Mode Wideband Spread Spectrum Cellular System IS 96A Speech Service Option 1 Standard for Dual Mode Wideband Spread Spectrum Cellular Sy...

Page 4: ...1 2 SAMSUNG Proprietary Contents may change without notice General Introduction Memo ...

Page 5: ...Hz 130 38MHz 130 38MHz Rx Intermediate Freq 210 38MHz 85 38MHz 85 38MHz Tx Local Freq lst FTX 130 38MHz lst FTX 130 38MHz lst FTX 130 38MHz 2nd 260 76MHz 2nd 260 76MHz 2nd 260 76MHz Rx Local Freq lst FRX 210 38MHz lst FRX 85 38MHz lst FRX 85 38MHz 2nd 420 76MHz 2nd 170 76MHz 2nd 170 76MHz TCXO freq 19 68MHz 19 68MHz 19 68MHz Freq Stability FRX 80MHz 150Hz FRX 45MHz 300Hz 2 5ppm Operating Temperatu...

Page 6: ...0 38MHz Local Frequency Transmitter lst FTX 130 38 2nd 260 76MHz Receiver lst FRX 210 38MHz 2nd 420 76MHz TCXO Frequency 19 68MHz Frequlency Stability FTX 80MHz 150Hz Operation Temperature 30 o C 60 o C Supply Voltage 3 6V 2 Transmitter Waveform Quality 0 944 or more Open Loop Power Conterol Range 25dBm 60 5dBm 41 5dBm 65dBm 20 5dBm 1 5dBm 104dBm 15 0dBm 30dBm Minimum Tx Power control below 50dBm ...

Page 7: ...Spurious Emission 1930 1990MHz 81dBm 1850 1910MHz 61dBm All Other Frequencies 47dBm Single Tone Desensitization lower than 1 Rx power 101dBm Tone power 30dBm Tone offset from carrier 1 25MHz Intermodulation Spurious Response Attenuation lower than 1 Rx power 101dBm Tone 1 power 43dBm Tone 2 power 43dBm Tone 1 offset from carrier 1 25MHz Tone 2 offset from carrier 2 05MHz ...

Page 8: ... 260 76MHz Receiver lst FTX 85 38MHz 2nd 170 76MHz TCXO Frequency 19 68MHz Frequency Stability FTX 45MHz 300Hz Operation Temperature 30 o C 60 o C Supply Voltage 3 6V 2 Transmitter Waveform Quality 0 944 or more Open Loop power Control Range 25dBm 57 5dBm 38 5dBm 65dBm 17 5dBm 1 5dBm 104dBm 18 0dBm 30dBm Minimum Tx Power Control below 50dBm Closed Loop Power Control Range 24dB Maximum RF Output Po...

Page 9: ... Frequencies 47dBm Single Tone Desenstization lower than 1 Rx power level 101dBm Tone power level 30dBm Tone offset from carrier 900kHz Intermodulation Spurious Response Attenuation lower than 1 Rx power 101dBm Tone 1 power 43dBm Tone 2 power 43dBm Tone 1 offset from carrier 900kHz Tone 2 offset from carrier 1 700kHz 2 5 SAMSUNG Proprietary Contents may change without notice ...

Page 10: ...rature 30 o C 60 o C 22 F 140 F Supply Voltate 3 6V 2 Transmitter RF output power 0 6W 2 4dB Carrier ON OFF conditions ON Condition within 3dB of specification output in 2 ms OFF Condition below 60dBm in 2 ms Compresssor Compression Rate 2 1 Attack Time 3ms Recovery Time 13 5ms Reference Input input power level for producing a nominal 2 9kHz peak frequency deviation of transmitted carrier Preampha...

Page 11: ...ove 63 dB 10 LOG PY dB where fo carrier frequency PY mean output power in watts Harmonic and conducted Spurious Emissions below 43 10 LOG PY dB 3 Receiver De emphasis 6dB oct within 0 3 3KHz Expandor Expandor Rate 1 2 Attack time within 3 ms Recovery Time Within 13 5 ms Recovery input output power level to a 1000Hz tone from a carrier within 2 9 kHz peak frequency deviation Sensitivity 12 dB SINAD...

Page 12: ...ow 80dBm Out of Band Conducted Spurious Emissions below 47dBm Radiated Spurious Emission Frequency Range Maximum Allowable EIRP 25 70MHz 45dBm 70 130MHz 41dBm 130 174 MHz 41 32dBm 174 260 MHz 32dBm 260 470 MHz 32 26dBm 470 1G MHz 21dBm 2 8 SAMSUNG Proprietary Contents may change without notice ...

Page 13: ... used 1 SIO Slot Index 0 2 SI1 Slot Index 1 3 SI2 Slot Index 2 Handset Status T xx Tx adjust Value ranges from 63 63dB Dxxx Sector power in dBm xx ec Io Pxxx PN offset CHxxxx Channel number TV Tx vocoder rate 8 is full rate 1 is 1 8th rate RV Rx vocoder rate 8 is full rate 1 is 1 8th rate xx Walsh code used in traffic channel System acquisition state SIDxxxxx SIx x T xx Dxxx xx Pxxx PCHxxxx xx xx ...

Page 14: ...west between the system and the phone will be used Handset Status T xx Tx adjust Value ranges from 63 63dB Dxxx Sector power in dBm xx ec Io Pxxx PN offset CHxxxx Channel number TEX Tx vocoder rate 8 is full rate 1 is 1 8th rate REX Rx vocoder rate 8 is full rate 1 is 1 8th rate xx Walsh code used in traffic channel SIDxxxxx SIx x T xx Dxxx xx Pxxx CCHxxxx IN IDLE MODE 0 NO SVC 1 Synchronization I...

Page 15: ...SSIxxx RSSI value CHxxx Using Channel Handset Status System acguisition state 2 7 AMPS Debug Display Information To select debug display mode prss MENU 8 and press 0 0 0 0 0 0 and press 1 or OK SIDxxxxx x x PWRx RSSIxxx SATx ACHxxxx xx xx Specification 1 Initialization state 2 Idle state 3 Vocoder Init 4 Waiting for order 5 Waiting for answer 6 Conversation 7 Release 8 System acguisition ...

Page 16: ...2 12 SAMSUNG Proprietary Contents may change without notice Specification Memo ...

Page 17: ...6 Trouble shooting 6 1 Logic Section 6 1 1 No Power SAMSUNG Proprietary Contents may change without notice 6 1 ...

Page 18: ...6 2 SAMSUNG Proprietary Contents may change without notice Troulde shooting 6 1 2 Abnormal initial operation Normal 3 6V voltage source ...

Page 19: ...6 3 SAMSUNG Proprietary Contents may change without notice Troulde shooting 6 1 3 Abnormal Backlight Operation ...

Page 20: ...6 4 SAMSUNG Proprietary Contents may change without notice Troulde shooting 6 1 4 Abnormal Key Data Input ...

Page 21: ...6 5 SAMSUNG Proprietary Contents may change without notice Troulde shooting 6 1 5 Abnormal Keytone ...

Page 22: ...6 6 SAMSUNG Proprietary Contents may change without notice Troulde shooting 6 1 6 Abnormal Alert Tone ...

Page 23: ...SAMSUNG Proprietary Contents may change without notice 6 7 Troulde shooting 6 2 Receiver Section 6 2 1 PCS ...

Page 24: ...6 8 SAMSUNG Proprietary Contents may change without notice Troulde shooting 6 2 2 CDMA ...

Page 25: ...Troulde shooting 6 9 SAMSUNG Proprietary Contents may change without notice 6 2 3 FM ...

Page 26: ...SAMSUNG Proprietary Contents may change without notice 6 10 Troulde shooting 6 3 Transmitter Section 6 3 1 PCS ...

Page 27: ...SAMSUNG Proprietary Contents may change without notice 6 11 Troulde shooting 6 3 2 CDMA AMPS Mode ...

Page 28: ...6 12 SAMSUNG Proprietary Contents may change without notice Troulde shooting Memo ...

Page 29: ...Diagrams 9 1 Cellular Phone PCB 9 2 Desk Top Rapid Charger PCB 9 3 Hands Free kit PCB 9 4 Cradle PCB 9 5 Car Adapter PCB 9 6 Rapid Travel Charger PCB SAMSUNG Proprietary Contents may change without notice 9 1 ...

Page 30: ...9 1 Cellular Phone PCB 9 1 1 SAMSUNG Proprietary Contents may change without notice 9 2 Circuit Diagram ...

Page 31: ...Circuit Diagram 9 1 2 SAMSUNG Proprietary Contents may change without notice 9 3 Circuit Diagram ...

Page 32: ...SAMSUNG Proprietary Contents may change without notice 9 4 9 1 3 PCB Diagrams ...

Page 33: ...9 1 4 SAMSUNG Proprietary Contents may change without notice 9 5 PCB Diagrams ...

Page 34: ...SAMSUNG Proprietary Contents may change without notice 9 6 9 2 Desk Top rapid Charger PCB 9 2 1 PCB Diagrams ...

Page 35: ...9 2 2 SAMSUNG Proprietary Contents may change without notice 9 7 PCB Diagrams ...

Page 36: ...SAMSUNG Proprietary Contents may change without notice 9 8 9 3 Hands Free kit PCB 9 3 1 PCB Diagrams ...

Page 37: ...9 3 2 SAMSUNG Proprietary Contents may change without notice 9 9 PCB Diagrams ...

Page 38: ...9 4 Cradle PCB SAMSUNG Proprietary Contents may change without notice 9 10 PCB Diagrams ...

Page 39: ...9 5 Car Adapter PCB 9 5 1 SAMSUNG Proprietary Contents may change without notice 9 11 PCB Diagrams ...

Page 40: ...9 5 2 SAMSUNG Proprietary Contents may change without notice 9 12 PCB Diagrams ...

Page 41: ...9 6 Rapid Travel Charger PCB 9 6 1 SAMSUNG Proprietary Contents may change without notice 9 13 PCB Diagrams ...

Page 42: ...9 6 2 SAMSUNG Proprietary Contents may change without notice 9 14 PCB Diagrams ...

Page 43: ...m 11 2 Desk Top Rapid Charger Circuit Diagram 11 3 Hands Free Kit Circuit Diagram 11 4 Cradle Circuit Diagram 11 5 Car Adapter Circuit Diagram 11 6 Rapid Travel Charger Circuit Diagram SAMSUNG Proprietary Contents may change without notice 11 1 ...

Page 44: ...SAMSUNG Proprietary Contents may change without notice 11 2 Circuit Diagram 11 1 Main Circuit Diagram 11 1 1 ...

Page 45: ...Circuit Diagram 11 1 2 SAMSUNG Proprietary Contents may change without notice 11 3 ...

Page 46: ...11 1 3 SAMSUNG Proprietary Contents may change without notice 11 4 Circuit Diagram ...

Page 47: ...Circuit Diagram 11 1 4 SAMSUNG Proprietary Contents may change without notice 11 5 ...

Page 48: ...11 1 5 SAMSUNG Proprietary Contents may change without notice 11 6 Circuit Diagram ...

Page 49: ...Circuit Diagram 11 1 6 SAMSUNG Proprietary Contents may change without notice 11 7 ...

Page 50: ...11 2 Desk Top rapid Charger Circuit Diagram SAMSUNG Proprietary Contents may change without notice 11 8 Circuit Diagram ...

Page 51: ...Circuit Diagram 11 3 Hands Free Kit Circuit Diagram 1 2 SAMSUNG Proprietary Contents may change without notice 11 9 ...

Page 52: ...Hands Free Kit Circuit Diagram 2 2 SAMSUNG Proprietary Contents may change without notice 11 10 Circuit Diagram ...

Page 53: ...Circuit Diagram 11 4 Cradle Circuit Diagram SAMSUNG Proprietary Contents may change without notice 11 11 ...

Page 54: ...11 5 Car Adapter Circuit Diagram SAMSUNG Proprietary Contents may change without notice 11 12 Circuit Diagram ...

Page 55: ...Circuit Diagram 11 6 Rapid Travel Charger Circuit Diagram SAMSUNG Proprietary Contents may change without notice 11 13 ...

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