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GSM TELEPHONE
SGH-D807
GSM TELEPHONE CONTENTS
1. Safety Precautions
2. General Introduction
3. Specification
4. Product Function
5. Circuit Description
6. Test Command & Test Procedure
7. Array course control
8. Exploded View and Parts List
9. Disassembly and Assembly
instructions
10. MAIN Electrical Parts List
11. Flow Chart of Troubleshooting
12. PCB Diagrams
13. Block Diagrams
14. Reference data
This Service Manual is a property of Samsung Electronics Co.,Ltd. Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law. Code No.: GH68-10831A
2006. 05. Rev.1.0
Contents
1. Safety Precautions
1-1. Repair Precaution ...........................................................................1-1
1-2. ESD(Electrostatically Sensitive Devices) Precaution ...........................1-2
2. General Introduction
3. Specification
3-1. GSM General Specification ..............................................................3-1
3-2. GSM TX power class ......................................................................3-2
3-3. EDGE TX Power Level ....................................................................3-3
4. Product Function
5. Circuit Description
6. Test Command & Test Procedure
6-1. Calibration Equipment ....................................................................6-1
6-2. Calibration Program .......................................................................6-1
6-3. Tx Power Tune up Procedure ..........................................................6-2
7. Array course control
7-1. Downloading Binary Files ................................................................7-1
7-2. Pre-requisition for Downloading .......................................................7-1
7-3. S/W Downloader Program ...............................................................7-2
7-4. How to Download ..........................................................................7-2
8. Exploded View and Parts List
8-1. Cellular phone Exploded View .........................................................8-1
8-2. Cellular phone Parts list .................................................................8-2
9. Disassembly and Assembly instructions
9-1. Disassembly ..................................................................................9-1
9-2. Assembly ......................................................................................9-7
9-3. KIT Assembly ..............................................................................9-10
9-4. Window Disassembly ....................................................................9-13
Contents
10. MAIN Electrical Parts List
11. Flow Chart of Troubleshooting
11-1. Baseband
11-1-1. Power ON ..............................................................................11-1
11-1-2. Initial ....................................................................................11-6
11-1-3. Sim Part ...............................................................................11-9
11-1-4. Microphone Part ...................................................................11-10
11-1-5. Speaker Part_1(MP3, SPEAKER PHONE) .................................11-12
11-1-6. Speaker Part_2(RECEIVER) ...................................................11-16
11-1-7. Charging Part ......................................................................11-18
11-2. RF
11-2-1. GSM850/EGSM RX ................................................................11-21
11-2-2. DCS RX ...............................................................................11-23
11-2-3. PCS RX ...............................................................................11-25
11-2-4. GSM850/EGSM TX ................................................................11-26
11-2-5. DCS/PCS TX ........................................................................11-28
12. PCB Diagrams
13. Block Diagrams
14. Reference data
1. Safety Precautions
1-1. Repair Precaution
Repair in Shield Box, during detailed tuning.
Take specially care of tuning or test,
because specipicty 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 manetic 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 disassembing 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.
1-1
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Safety Precautions
1-2. ESD(Electrostatically Sensitive Devices) Precaution
Several semiconductor may be damaged easilly 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.
1-2
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
2. General Introduction
The SGH-D807 Quad Band phone functions as digital phone working in GSM
(Global System for Mobile communications)850,EGSM900, DCS1800 and
PCS(PersonalCommunication System)1900 modes.
Dimension : 99.9x52.0x15.4 mm (with Standard Battery)
LCD : QCIF(176