Samsung SCH-N500 Manual de usuario

CDMA TELEPHONE

CDMA TELEPHONE CONTENTS

SCH-N500

1. General Introduction

2. Specification

3. Installation

4. Product Support Tools

5. Circuit Description

6. Test Procedure

7. Flow Chart of Troubleshooting

8. Electrical Parts List

9. Exploded Views and Parts List

10. Block Diagram

11. PCB Diagrams

Samsung Electronics Co.,Ltd. Setember. 2005

Printed in Korea.

Code No.: GH68-08423A

BASIC.

This Service Manual is a property of Samsung Electronics Co.,Ltd.

Any unauthorized use of Manual can be punished under applicable

International and/or domestic law.

ⓒ

SAMSUNG Proprietary-Contents may change without notice

1. General Introduction

1-1

This Document can not be used without Samsung's authorization

The SCH-N500 (Single Mode) phone functions as digital phone working in CDMA(Code Division Multiple

Access) mode.

The following standards and minimum performance standards shall be met or exceeded by each

subscriber unit.

Air Interface

The Subscriber Unit shall be Single band in compliance with TSB-74.

TIA/EIA IS-125 : Recommended Minimum Performance standards for Digital Cellular Wideband Spread

Spectrum Speech Service Option1.

TIA/EIA IS-126-A : Mobile Station Loop back Service Option standard.

TIA/EIA IS-95B : Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread

Spectrum Cellular Systems;for the analog air interface.

CDMA Receiver/Transmitter Specifications and Requirements

The Subscriber Unit shall meet TIA/EIA IS-98C. The Subscriber Unit shall comply with Personal Station

Class III.

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General Introduction

1-2

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SAMSUNG Proprietary-Contents may change without notice

2. Specification

2-1

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2-1 General

ITEM CDMA

Tx Freq. range

Rx Freq. range

Channel Bandwidth

Channel Spacing

Number of Channel

Duplex Separation

Type of Emission

In/Output Impedance

Tx Local Freq.

Rx Local Freq

TCXO freq.

Freq. Stability

Operating Temperature

824.64 ~ 848.87MHz

869.64 ~ 893.37MHz

1.23MHz

30KHz

20FA

45MHz

1M25F9W

50 Ohm

1649.28~1696.74MHz

1739.28~1786.74MHz

19.2MHz

(FRX-45MHz)+/-300Hz

-30deg ~ +60deg

Supply Voltage

Size and Weight

3.6V

STD : 57.0 X 37.0 X 5.1mm

20g 800 mAh

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Specification

2-2

This Document can not be used without Samsung's authorization

2-2 800MHz CDMA

GENERAL

Frequency Range

. Transmitter : 824.64 ~ 848.87MHz

. Receiver : 869.64 ~ 893.37MHz

Channel Bandwidth : 1.23MHz

Channel Spacing : 30kHz

Number of Channels : 20FA

Duplex Separation : 45 MHz

Type of Emission : 1M25F9W

Input/Output Impedance : 50 ohms

Local Frequency

. Transmitter : 1649.28~1696.74MHz

. Receiver : 1739.28~1786.7MHz

TCXO Frequency : 19.2MHz

Frequency Stability : (FRX-45MHz) ±300Hz

Operation Temperature : -30°C ~ +60°C

Supply Voltage : +3.6V

TRANSMITTER

Waveform Quality : 0.944 or more

Open Loop Power Control Range

. -25dBm : -57.5dBm ~ -38.5dBm

. -65dBm : -17.5dBm ~ +1.5dBm

. -93.5dBm : +10.5dBm ~ +29.5dBm

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Specification

2-3

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Minimum Tx Power Control : below -50dBm

Closed Loop Power Control Range : ±24dB

Maximum RF Output Power : 398mW(+24.5dBm)

Occupied Bandwidth : 1.23MHz

Conducted Spurious Emission @885 KHz : -42dBc/30kHz

@1.98 MHz : -54dBc/30kHz

RECEIVER

Rx Sensitivity and Dynamic Range : -104dBm, FER=0.5% or less

: -25dBm, FER=0.5% or less

Conducted Spurious Emission

. 869~894 MHz : <-81dBm

. 824~849 MHz : <-61dBm

All Other Frequencies : <-47dBm

Single Tone Desensitization : lower than 1 %

. Rx power level = -101dBm

. Tone power level = -30dBm

. Tone offset from carrier = ±900KHz

Intermodulation Spurious Response Attenuation : lower than 1 %

. Tone 1 offset from carrier = ±900KHz

. Tone 2 offset from carrier = ±1.700MHz

-Test1,2

Rx power = -101dBm

Tone 1 power = -43dBm

Tone 2 power = -43dBm

-Test3,4

Rx power = -90dBm

Tone 1 power = -32dBm

Tone 2 power = -32dBm

-Test5,6

Rx power = -79dBm

Tone 1 power = -21dBm

Tone 2 power = -21dBm

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Specification

2-4

This Document can not be used without Samsung's authorization

2-3 CDMA Debug Display Information

Toselectdebugdisplaymode:Select[Menu]+Press[5]+[*]+press[2]+[1]+[2]+[3]+[5]+[8]+

[0] + select [Debug Screen].

CDMA Monitor

Sxxxxx Nxxxxx SX

Pxxx RSSI-ECIO Wxx

CxxxxR-xx SI0 T-xx

②

⑤

⑧

①⑥

③

④

⑦

⑩

⑨

①SID : SXXXX

②NID : NXXXX

③Call Processing State : SX

1) S1 : Init State

2) S2 : Idle State

3) S3 : VC Init State

4) S4 : WFO State

5) S5 : WFA State

6) S6 : Call State

7) S7 : Release State

8) S8 : OVHD State

9) S9 : Originate State

10) SA : Page Res State

11) SB : ORD Res State

12) SC : Reg State

13) SD : MSG State

⑪

④Pilot PN Code

⑤RSSI-ECIO

⑥-ECIO

⑦Walsh Code

⑧Channel Number

⑨Protocol Revision

⑩Slot Cycle Index

⑪ Call state : TX PDM Value

Idle, Sleep state :

Tx_Gain_ADJ Accumulator Value

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3. Installation

3-1

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Installing and Removing the Battery

To install, insert the battery into the opening on

the back of the phone making sure the plastic tabs

on the back are inserted into the matching slots in

the phone. Press down until the latchsnaps into

place.

To remove, make sure the power is off. Push the

battery release latch up completely. Pull and lift the

battery away from the phone.

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Installation

This Document can not be used without Samsung's authorization

3-2

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