Samsung SCH-i830 service manual.pdf

CDMA TELEPHONE

SCH-i830

CDMA TELEPHONE

CONTENTS

1. General Introduction

2. Circuit Description

3. Installation

4. NAM Programming

5. Product Support Tools

6. Test Procedure

7. Flow Chart of Troubleshooting

8. Exploded View/

Disassembly and Assembly Instructions

9. Block Diagram

10. Electrical Parts List

11. PCB Diagrams

ⓒ

Samsung Electronics Co.,Ltd. August. 2006

Printed in Korea.

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.

Code No.: GH68-12640A

BASIC.

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1-1 General Instruction

The SCH-i830 enable mobile users to communicate 3G CDMA2000 1X, 1X EVDO 2G GSM service into

a single handset.

For CDMA/PCS mode, The SCH-i830 supports Release A of the CDMA2000 1X standard, offering data

ratesofupto307klobitspersecond(kbps)onboththeforwardandreverseinks,alongwith

simultaneous voice and data services.

For The GSM/DCS/GPRS mode, The SCH-i830 supports voice service, data service and SMS in

EGSM900 and DCS1800.

So, The SCH-i830 may be the first PDA phone in the world that works on North American CDMA

networks and also GSM networks overseas. This stylish bar phone also supports a VGA color displays,

Bluetooth, SMS, Email, voice dialing, and airplane mode.

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2-1. Logic Section

2-1-1. Power Supply

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The regulated voltage(U900,VREG_MSMC, VRGE_MSME, VREG_MSMP ) is used in the digital part

of MSM

The regulated voltage(U900,VREG_MSMA) is used in the analog part of MSM.

The regulated volgtage(U900, VREG_RFTX) is used in the TX RF

The regulated voltage(U900,VREG_RFRX) is used in the Rx RF part.

The regulated voltage(U900,VREG_TCXO) is used in the TCXO

The regulated Voltage(U900,VREG_SYNTH) is used in the PLL part.

2-1-2. Logic Part

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MOBILE SYSTEM MODEM(UCP800:MSM6500)

Industry standard ARM926EJ-S microprocessor is embedded. The MSM6500 chipset integrates

CDMA2000 1x and 1xEVDO service. The 1xEVDO solution can support High-speed peak data rates of

2.4Mbps on forward link and 153kbps on reverse link.

The MSM6500 device is offered in a 409 ball, 0.5mm pitch, CSP production package. Subsystems within

the MSM6500 device include a CDMA processor, a QDSP for voice compression, an ARM9TDMI

microprocessor.AlsointegratedintheMSM6500device are analog functions such as an audio voice

codec, PLL, transmit DAC S ,ADC S , memories, USB controller, peripheral interfaces, and an enhanced

clock. It is one of the most important components of the CDMA cellular phone.

The interface circuitry consists of reset circuit, dual address/data bus and memory controls. The TCXO

clock of 19.2Mhz is used as the clock of SCH-i830 model.

MCP : FLASH ROM and SDRAM (UME802:K5D5657DCM)

MCP is consist of 256Mbit NAND FALSH and 256Mbit SDRAM. MCP is used to store the cellular

phone's executable program ,necessary data files and temporary data space and efs area is used to

store ESN, NAM information, telephone directory, SMS messages and other important information of the

phone. MCP is also used to execute the DMSS(Dual Mode Subscriber system) software.

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