Samsung SGH-X520 Service Manual
GSM TELEPHONE
SGH-X520
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
Contents
1. Safety Precautions
1-1. Repair Precaution ...........................................................................1-1
1-2. ESD(Electrostatically Sensitive Devices) Precaution ...........................1-2
2. Specification
2-1. GSM General Specification ..............................................................2-1
2-2. GSM TX power Level ......................................................................2-2
3. Product Function
4. Array course control
4-1. Downloading Binary Files .............................................................4-2
4-2. Pre-requsite for Downloading .......................................................4-2
4-3. S/W Downloader Program ............................................................4-3
5. Exploded View and Parts list
5-1. Cellular phone Exploded View ......................................................5-1
5-2. Cellular phone Parts list ..............................................................5-2
5-3. Disassembly ...............................................................................5-4
5-4. Assembly ...................................................................................5-6
6. MAIN Electrical Pa rts List
7. Block Diagrams
8. PCB Diagrams
Contents
9. Flow Chart of Troubleshooting
9-1. Baseband ................................................................................9-1
9-1-1. Power ON ..........................................................................9-1
9-1-2. Initial ................................................................................9-4
9-1-3. SIM Part .............................................................................9-6
9-1-4. Microphone Part .................................................................9-7
9-1-5. Speaker Part_1(MP3, SPEAKER PHONE) ................................9-8
9-1-6. Speaker Part_2(RECEIVER) ................................................9-10
9-1-7. Charging Part ...................................................................9-11
9-2. RF .........................................................................................9-13
9-2-1. EGSM RX .........................................................................9-13
9-2-2. DCS RX ...........................................................................9-15
9-2-3. PCS RX ............................................................................9-16
9-2-4. EGSM TX .........................................................................9-17
9-2-5. DCS TX ...........................................................................9-18
9-2-6. PCS TX ............................................................................9-19
10. 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
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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
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2. Specification
2-1. GSM General Specification
GSM900
Phase 1
Freq. Band[MHz]
Uplink/Downlink
ARFCN range 1~124 0~124 & 975~1023 512~885 512~810
Tx/Rx spacing 45 MHz 45 MHz 95 MHz 80 MHz
Mod. Bit rate/
Bit Period
Time Slot
Period/Frame Period
Modulation 0.3GMSK 0.3 GMSK 0.3 GMSK 0.3 GMSK
MS Power 33 dBm~13 dBm 33 dBm~5 dBm 30 dBm~0 dBm 30 dBm~0 dBm
890~915
935~960
270.833 kbps
3.692 us
576.9 us
4.615 ms
EGSM 900
Phase 2
880~915
925~960
270.833 kbps
3.692 us
576.9 us
4.615 ms
DCS1800
Phase 1
1710~1785
1805~1880
270.833 kbps
3.692 us
576.9 us
4.615 ms
PCS1900
1850~1910
1930~1990
270.833 kbps
3.692 us
576.9 us
4.615 ms
PowerClass 5pcl~15pcl 5pcl~19pcl 0pcl~15pcl 0pcl~15pcl
Sensitivity -102 dBm -102 dBm -100 dBm -100 dBm
TDMA Mux 8 8 8 8
Cell Radius 35 Km 35 Km 2 Km -
2-1
Speclflcation
2-2. GSM Tx Power Class
TX Powe r
control level
5 33±2 dBm
6 31±2 dBm
7 29±2 dBm
8 27±2 dBm
9 25±2 dBm
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
GSM900
TX Powe r
control level
0 30±3 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±4 dBm
10 10±4 dBm
11 8±4 dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
DCS1800
TX Power
control level
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
PCS1900
15 0±5 dBm
2-2
15 0±5 dBm
3. Product Function
Main Function
-Camera
-Web browser
-File viewer
-Java
-Multimedia Message Service(MMS)
-E-mail
3-1
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4. Array course control
Test Jig (GH80-00865A)
Test Cable (GH39-00127A)
RF Test Cable (GH39-00397A)
4-1
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Array course control
4-1. Downloading Binary Files (1)
•Swift Model firmware is composed of 2 files
–*.s3 : Main source code binary.
4-2. Prerequisite
•Downloader program(Optiflash.exe)
•X520 Moblie Phone
•Data Cable
•Binary Files
4-2
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4-3. S/W Downloader Program
1. Load the binary download program by execution the "OptiFlash.exe"
Array course control
2. Select the“Options” -> “Settings” -> “Generic” -> “Specify hardware platform”.
Choose hardware platform for the downloader file setting.
Set the everything else as the default values which are shown below
4-3
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Array course control
3. Select the COM port where the download cable is connected
Only COM1 is supported. Additionally you can select the maximum transfer speed
OptiFlash will use to communicate with the phone. However, Optiflash will use a slower
speed if either the PC’s or the phone’s serial hardware is incapable of handling the
selected speed.
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Array course control
4. Select the
“Flash&Verify” -> “Browse”
Set the directory path and choose the latest S/W binary, for example
"gsmstack.s3", for the downloader binary setting.
And Check "Reserved Memory Regions" -
0x00008000 - 0x0001ffff
5. 1st. Press “Flash”.
4-5
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Array course control
2nd. Turn on Power of mobile
6. When downloading is finished successfully, there is a “All is well” message.
7. After finishing downloading, Certain memory resets should be done to guarantee the
normal performance.
8. Confirm the downloaded version name by key-string(
*#1234#
)
Memory reset will be done by pressing the following key-strings.
Full Reset :“
*2767*3855#
” will reboot the phone automatically.
4-6
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5. Exploded View and Parts List
5-1. Cellular phone Exploded View
QFU01
QFR01
QVO01
QKP01
QMP01
QAN02
QME01
QAN02
QRE01
QRF03
QME03
QHI01
QIF02
QLC01
QCA01
QSP01
QMO01
QFL01
QMW01
QCR05
QSC05
QMI03
QMI04
QIF01
QBA01
QCR05
QBA00
QRF01
5-1
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Exploded View and Parts List
5-2. Cellular phone Parts list
Design LOC Discription SEC CODE
QAN02
QAN11
QBA00
QBA01
QCA01
QCR05
QCR05
QFU01
QIF01
QIF02
QKP01
QLC01
QME01
QME03
QMI03
QMI04
QMO01
QMP01
QMW01
QRE01
QRF01
QSC05
QSP01
QFL01
QFR01
ANTENNA-SGHX520 GH42-00993A
ASSY-CUSHION-CUSHION RUBBER IN GH98-01077A
ASSY CASE-BATTERY GH98-02442B
INNER BATTERY PACK-750MAH,BLK, GH43-02483A
UNIT-CAMERA GH59-03591A
SCREW-MACHINE 6001-001478
SCREW-MACHINE 6001-001478
ASSY CASE-FOLDER UPPER GH98-02437B
PMO-COVER IF GH72-33630A
NPR-COVER CONNECTOR GH71-06926A
ASSY KEYPAD-(SER/PB) GH98-02713A
ELA UNIT-SGHX520 LCD MODULE GH96-02262A
UNIT-DOME SHEET GH59-03654A
PCB-CON-TO-CON GH41-01412A
RMO-HOLDER MIC GH73-08172A
RMO-RUBBER HOLDER MIC CAP GH73-08395A
MOTOR DC-SGHX520 GH31-00284A
PBA MAIN-SGHX520 (PBA MAIN) GH92-02983A
PMO-COVER WINDOW LCD MAIN GH72-33611A
ASSY CASE-REAR GH98-02440A
MPR-TAPE RF SHEET GH74-26133A
RMO-FOLDER SCREW CAP GH73-07837A
SPEAKER 3001-002042
ASSY CASE-FOLDER LOWER GH98-02438A
QHI01 ASSY MEC-HINGE GH75-09605A
ASSY CASE-FRONT GH98-02439A
QRF03 PMO-COVER EAR GH72-33603A
QVO01 PMO-KEY VOLUME GH72-33605A
5-2
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Exploded View and Parts List
Discription SEC CODE
BAG PE 6902-000297
ADAPTOR-EU 220V TYPE(BLK) GH44-01334A
UNIT-EARPHONE(BLK) GH59-02472A
LABEL(P)-WATER SOAK GH68-02026A
LABEL(P)-WATER SOAK GH68-02026A
MANUAL-SFC GH68-04336A
LABEL(P)-BARCODE RUSSIA GH68-08494A
MANUAL USERS-EU RUSSIAN GH68-12629A
LABEL(R)-MAIN(SER) GH68-12712B
BOX(P)-UNIT MAIN(SER) GH69-04539B
MPR-REMOVE TAPE LCD GH74-13804A
MPR-TAPE LED GH74-17926A
MPR-BOHO VINYL LCD GH74-19127A
MPR-TAPE FRONT FPCB MASKING GH74-26099A
MPR-TAPE COVER WINDOW LCD MAIN GH74-26134A
MPR-TAPE,24.3X3XT0.05,TESA4965 GH74-26547A
MPR-TAPE GH74-27383A
MPR-SPONGE INTENNA GH74-27720A
MPR-INSU TAPE GH74-28241A
MPR-INSU TAPE GH74-28980A
5-3
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Exploded View and Parts List
5-3. Disassembly
1
1)SEPERATE IF COVER WITH TWEEZERS.
2)SEPERATE THE IF COVER FROM THE REAR
CASE.
※
caution
1.BE CAREFUL NOT TO MAKE SCRATCH ON
CASE.
2
1) RELEASE SCREWS IN RED CIRCLES.
※
caution
1.BE CAREFUL NOT TO MAKE SCRATCH ON
CASE.
1) UNLOCK THE HOOK OF REAR CASE WITH
A TOOL.
※
caution
1. BE CAREFUL NOT TO MAKE SCRATCH ON
THE CASE.
43
1) DETACH THE LCD CONNECTOR.
※
caution
1. BE CAREFUL NOT TO DAMAGE THE LCD
CONNECTOR.
5-4
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