Samsung SGH-D780 User manual

GSM TELEPHONE

SGH-D780

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

12. Schematic Diagrams

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.

2008. 05. 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 specificity 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

This Document can not be used without Samsung's authorization

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

GSM900

Phase 1

EGSM 900

Phase 2

DCS1800

Phase 1 PCS1900

Freq. Band[MHz]

Uplink/Downlink

890~915

935~960

880~915

925~960

1710~1785

1805~1880

1850~1910

1930~1990

ARFCN range 1~124 0~124 &

975~1023 512~885 512~810

Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz

Mod. Bit rate

/BitPeriod

270.833kbps

3.692us

270.833kbps

3.692us

270.833kbps

3.692us

270.833kbps

3.692us

Time Slot Period

/ Frame Period

576.9us

4.615ms

576.9us

4.615ms

576.9us

4.615ms

576.9us

4.615ms

Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK

MS Power 33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm

Power Class 5pcl ~ 19pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl

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

TDMA Mux 8 8 8 8

Cell Radius 35Km 35Km 2Km

2-1. GSM General Specification

*PCS1900 only in Master

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Specification

2-2

TX Power

control level PCS1900

030±2dBm

128±3dBm

226±3dBm

324±3dBm

422±3dBm

520±3dBm

618±3dBm

716±3dBm

814±3dBm

912±4dBm

10 10±4 dBm

11 8±4dBm

12 6±4 dBm

13 4±4 dBm

14 2±5 dBm

15 0±5 dBm

TX Power

control level DCS1800

030±2dBm

128±3dBm

226±3dBm

324±3dBm

422±3dBm

520±3dBm

618±3dBm

716±3dBm

814±3dBm

912±4dBm

10 10±4 dBm

11 8±4dBm

12 6±4 dBm

13 4±4 dBm

14 2±5 dBm

15 0±5 dBm

TX Power

control level

GSM900

GSM850

533±2dBm

631±3dBm

729±3dBm

827±3dBm

925±3dBm

10 23±3 dBm

11 21±3 dBm

12 19±3 dBm

13 17±3 dBm

14 15±3 dBm

15 13±3 dBm

16 11±5 dBm

17 9±5 dBm

18 7±5 dBm

19 5±5 dBm

2-2. GSM TX power class

*PCS1900 only in Master

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Specification

This Document can not be used without Samsung's authorization

2-3

TX Power

control level

GSM900

GSM850

827±3dBm

925±3dBm

10 23±3 dBm

11 21±3 dBm

12 19±3 dBm

13 17±3 dBm

14 15±3 dBm

15 13±3 dBm

16 11±5 dBm

17 9±5 dBm

18 7±5 dBm

19 5±5 dBm

TX Power

control level DCS1800

2 26 -4/+3 dBm

3 24±3 dBm

4 22±3 dBm

5 20±3 dBm

6 18±3 dBm

7 16±3 dBm

8 12±3 dBm

9 10±3 dBm

10 14±3 dBm

11 12±4 dBm

12 10±4 dBm

13 8±4dBm

14 6±4 dBm

15 4±4 dBm

2-3. GSM EDGE TX power class

TX Power

control level PCS1900

2 26 -4/+3 dBm

324±3dBm

422±3dBm

520±3dBm

618±3dBm

716±3dBm

812±3dBm

910±3dBm

10 14±3 dBm

11 12±4 dBm

12 10±4 dBm

13 8±4dBm

14 6±4 dBm

15 4±4 dBm

Only in Master

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This Document can not be used without Samsung's authorization

Specification

2-4

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3. Operation Instruction and Installation

3-1

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Main Function

-Bar Design Intenna

-Dual Standby

-2M CMOS Camera

-Bluetooth V.2.0

-Stereo Bluetooth Headset

-Mobile Tracker & SOS Messaging

-2.1" QVGA 262K TFT Display

-EXT. Memory

-SMS / MMS / E-Mail

-WAP 2.0 / Java MIDP 2.0

-MP3,AAC,MP4,3GPPDecoding

-Video Recording and Messaging

-GSM/GPRS/EDGE Class 10

-Band(Master : GSM900, 1800, 1900/ Slave : GSM900, 1800)

-FM radio

-Speaker Phone

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Operation Instruction and Installation

3-2

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