Samsung SGH-i550 Manual de usuario

GSM TELEPHONE

SGH-i550

GSM TELEPHONE CONTENTS

1. Safety Precautions

2. Specification

3. Product Function

4. Array course control

5. Exploded View and Parts List

6. Main Electrical Parts List

7. Block Diagrams

8. PCB Diagrams

9. Flow Chart of Troubleshooting

10. Reference data

11. Disassembly and Assembly

Instructions

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 Electronics Co.,Ltd.

2007. 10. Rev.1.0

ⓒ

Country Web Site

North America service.samsungportal.com

Latin America latin.samsungportal.com

CIS cis.samsungportal.com

Europe europe.samsungportal.com

China china.samsungportal.com

Asia asia.samsungportal.com

Mideast & Africa mea.samsungportal.com

GSPN (Global Service Partner Network)

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1. Safety Precautions

1-1

This Document can not be used without Samsung's authorization

1-1. Repair Precaution

●Repair in Shield Box, during detailed tuning.

Take specially care of tuning or test, because the specification of cellular phone is sensitive for

surrounding interference(RF noise).

●Be careful to use a kind of magnetic object or tool, because performance of parts is damaged by the

influence of magnetic force.

●Surely use a standard screwdriver when you disassemble this product, otherwise screw will be worn

away.

●Use a thicken twisted wire when you measure level.

A thicken twisted wire has low resistance, therefore error of measurement is few.

●Repair after separate Test Pack and Set because for short danger (for example an

overcurrent and furious flames of parts etc) when you repair board in condition of

connecting Test Pack and tuning on.

●Take specially care of soldering, because Land of PCB is small and weak in heat.

●Surely tune on/off while using AC power plug, because a repair of battery charger is

dangerous when tuning ON/OFF PBA and Connector after disassembling charger.

●Don't use as you pleases after change other material than replacement registered on SEC System.

Otherwise engineer in charge isn't charged with problem that you don't keep this rules.

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Safety Precautions

1-2

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1-2. ESD(Electrostatically Sensitive Devices) Precaution

Several semiconductor may be damaged easily by static electricity. Such parts are called by ESD

(Electrostatically Sensitive Devices), for example IC,BGA chip etc. Read Precaution below.

You can prevent from ESD damage by static electricity.

●Remove static electricity remained your body before you touch semiconductor or parts with

semiconductor. There are ways that you touch an earthed place or wear static electricity

prevention string on wrist.

●Use earthed soldering steel when you connect or disconnect ESD.

●Use soldering removing tool to break static electricity. , otherwise ESD will be damaged by

static electricity.

●Don't unpack until you set up ESD on product. Because most of ESD are packed by box and

aluminum

plate to have conductive power,they are prevented from static electricity.

●You must maintain electric contact between ESD and place due to be set up until ESD is connected

completely to the proper place or a circuit board.

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2. Specification

This Document can not be used without Samsung's authorization

2-1

EGSM 900 DCS 1800 PCS 1900 WCDMA 2100

Freq. Band[MHz]

Uplink/Downlink 880~915

925~960 1710~1785

1805~1880 1850~1910

1930~1990 1920~1980

2110~2170

ARFCN range 0~124 &

975~1023 512~885 512~810 UL:9612~9888

DL:10562~10838

Tx/Rx spacing 10MHz 20MHz 20MHz 130MHz

Mod. Bit rate/

Bit Period 270.833kbps

3.692us 270.833kbps

3.692us 3.84Mcps

(chip rate)

Time Slot Period/

Frame Period 576.9us

4.615ms 576.9us

4.615ms Frame length : 10ms

Slot length : 0.667ms

Modulation 0.3GMSK 0.3GMSK 0.3GMSK QPSK

HPSK

MS Power 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm 24dBm~-50dBm

Power Class 4

(max +33dBm) 1

(max +30dBm) 1

(max +30dBm) 3

(max +24dBm)

Sensitivity -102dBm -100dBm -100dBm -106.7dBm

TDMAMux888

Cell Radius 35Km 2Km 2Km 2Km

2-1. GSM General Specification

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Specification

2-2

TX Power

control level PCS1900

030±3dBm

128±3dBm

226±3dBm

324±3dBm

422±3dBm

520±3dBm

618±3dBm

716±3dBm

814±3dBm

912±4dBm

10 10±4 dBm

11 8±4 dBm

12 6±4 dBm

13 4±4 dBm

14 2±5 dBm

15 0±5 dBm

TX Power

control level GSM850

GSM900

533±2dBm

631±2dBm

729±2dBm

827±2dBm

925±2dBm

10 23±2 dBm

11 21±2 dBm

12 19±2 dBm

13 17±2 dBm

14 15±2 dBm

15 13±2 dBm

16 11±3 dBm

17 9±3 dBm

18 7±3 dBm

19 5±3 dBm

TX Power

control level DCS1800

030±3dBm

128±3dBm

226±3dBm

324±3dBm

422±3dBm

520±3dBm

618±3dBm

716±3dBm

814±3dBm

912±4dBm

10 10±4 dBm

11 8±4 dBm

12 6±4 dBm

13 4±4 dBm

14 2±5 dBm

15 0±5 dBm

2-2. GSM TX power class

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3. Product Function

3-1

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Main Function

 HSDPA/UMTS, EDGE, GPRS

 Trackball interface for UI

 Bluetooth v2.0 + EDR

 USB v2.0 HS compatible

 Camera 3Mega x 9 Digital Zooming and camcorder

FMRadio

 Instant Messaging capability

E-mail

 Featured applications provide alarms, calendar, calculator, record audio, converter, timer, stopwatch,

and world time.

 File viewer (MS office, PDF)

 Multimedia Message Service (MMS)

 Multimedia capability (with included Media player)

PhotocallerID

 Speakerphone capability

 WEB/WAP browser (HTMS, xHTML, WML)

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Product Function

3-2

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4. Array course control

4-1

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4-1. Software Adjustments

- There is 2 set to download the binary image into your device.

[First set]

1. JIG BOX (UMTS TEST JIG; GH80-03308A)

2. USB Cable : JIG to PC

3. Test Cable : JIG to Scotch (GH39-00890A)

4. Power Cable : JIG to power supply

5. Serial Cable : JIG to PC

6. Power Supply

7. Rf Cable : Scotch to Agilent 8960 or CMU200 (GH39-00397A)

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Array course control

4-2

This Document can not be used without Samsung's authorization

[Second Set]

USB Data Link Cable : Scotch to PC (GH39-00922A)

Standard Battery for Scotch (GH43-02986A)

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