Samsung SGH-X550 User manual

GSM TELEPHONE
SGH-X550
GSM TELEPHONE CONTENTS
1. Safety Precautions
2. Specification
3. Operation Instruction and
Installation
4. Array course control
5. Exploded View/Disassembly
and Assembly Instructions
6. MAIN Electrical Parts List
7. Block Diagrams
8. PCB Diagrams
9. Flow Chart of Troubleshooting
10. Reference data

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1. Safety Precautions
1-1
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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 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.

2. Specification
2-1
2-1. GSM General Specification
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/
Bit Period 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 -

Speclflcation
2-2
2-2. GSM Tx Power Class
TX Power
control level 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±3dBm
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±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
TX Power
control level PCS1800
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±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm

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3. Operation Instruction and Installation
3-1
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Main Function
―SMS/EMS/MMS Message Service
―WAP2.0
―Speaker phone
―TFT 1.9" Main Display
―Dual Display VGA Camera Folder
―16 Poly Melody
―E-mail client
―Bluetooth

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Operation Instruction and Installation
3-2
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4. Array course control
4-1
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4-1. Software Adjustments
Serial Cable(CSA LL64151-A) Power Cable
USB DATA CABLE (CSA LL11105 AWM) JIG BOX (GH80-01909A)
JIG CABLE (GH39-00217A)

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Array course control
4-2
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4-2. Software Downloading
4-2-1. Pre-requsite for Downloading
• Downloader Program(S_Benz Downloader_V2.0.exe)
• X550 Mobile Phone
• Data Cable
• Binary file, TFS file
4-2-2. S/W Downloader Program
■Load the binary download program by executing the
"S_Benz Downloader_V2.0.exe”
1. Select the connected serial port and the rate of speed
2. Select the check box, the mode you want to download.
- if the binary file wanted, check only 'BIN'
- if the tfs file wanted, check only 'TFS'
- if all the files wanted, check 'BIN+TFS'

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Array course control
4-3
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3. Select the file(s) what you want to download

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Array course control
4-4
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5-1
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5. Exploded View/Disassembly&Assembly Instructions
5-1. Cellular phone Exploded View
QFU01
QLC01
QCA01
QFL01
QVK01
QAN05
QCR05
QAN02
QVO01
QCR05
QSC01
QME16
QFR01
QKP01
QME01
QMP01
QMI01
QRE01
QBA00
QBA01
QCR31
QSP01
QMO01
QIF01
QHI01
QRF03
QMW01

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Exploded View/Disassembly&Assembly Instructions
5-2
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5-2. Cellular phone Parts list
Design LOC Description Sec Code
QAN02 INTENNA-SGH X550 GH42-01044A
QAN05 ASSY MEC-INTENNA CONTACT GH75-08168A
QBA00 PCT CASE-BATT TFC(XEC) GH72-41875A
QBA01 INNER BATTERY PACK-800MAH,MAIN GH43-02589A
QCA01 UNIT-SGHX550 CAMERA MODULE GH59-03869A
QCR05 SCREW-MACHINE 6001-001478
QCR05 SCREW-MACHINE 6001-001478
QCR31 SCREW-MACHINE 6001-001795
QFU01 ASSY CASE-FOLDER UPPER(XEC) GH98-04939A
QKP01 ASSY KEYPAD-(XET/RED) GH98-02693B
QME01 UNIT-METAL DOME GH59-03832A
QME16 UNIT-CON TO CON ASSY GH59-03813A
QMI01 MICROPHONE-ASSY GH30-00321A
QMO01 MOTOR DC-SGHX550 GH31-00348A
QMP01 PBA MAIN-SGHX550 GH92-03766A
QRE01 ASSY CASE-REAR COVER GH98-02691B
QSC01 RMO-RUBBER SCREW CAP GH73-08379B
QSP01 SPEAKER 3001-002137
QVK01 UNIT-VOLUME KEY GH59-03830A
QVO01 PMO-VOLUME KEY V2 GH72-39529A
QLC01 ELA ETC-SGH X550 LCD MODULE GH96-02309A
QMW01 ASSY COVER-MAIN WINDOW GH98-02694A
QFR01 ASSY CASE-FRONT COVER GH98-02690B
QIF01 PMO-COVER IF GH72-35231B
QRF03 PMO-COVER EAR JACK V2 GH72-39434B
QFL01 ASSY CASE-FOLDER LOWER GH98-02689B
QHI01 ASSY HINGE-FOLDER GH98-03351A

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Exploded View/Disassembly&Assembly Instructions
5-3
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Description Sec Code
BAG PE 6902-000634
ADAPTOR-SGHD500 TA GH44-01451A
LABEL(R)-WATER SOAK GH68-09361A
LABEL(R)-MAIN(EU) GH68-14831A
MANUAL USERS-XEC SPANISH GH68-15419A
BOX-UNIT(XEC) GH69-05416B
CUSHION PLUP-CASE(XEC) GH69-05602A
MPR-REMOVE TAPE LCD GH74-13804A
MPR-TAPE LCD CONN COVER GH74-14057A
MPR-TAPE LED GH74-17926A
MPR-INSU TAPE GH74-18595A
MPR-VINYL BOHO MAIN WINDOW GH74-22341A
MPR-INSU TAPE SUB LCD GH74-27510A
MPR-INSU TAPE GH74-27512A
MPR-TAPE GH74-29296A
MPR-TAPE MAIN FPCB GH74-30860A
TAPE GASK GH74-32900A
SPONGE-PBA IF GH74-32903A
TAPE-FPCB HOLE MASK GH74-33011A
TAPE-LED MASKING GH74-33166A

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Exploded View/Disassembly&Assembly Instructions
5-4
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1) Be careful not to make scratch and molding damage! 1) Be careful not to make scratch and molding damage!
2) Please remove the lower end locker first.
1) Be careful not to damage F-PCBs.
(Volume key, LCD, MIC)
1) Be careful not to make scratch and damage to
the LCD F-PCB.
5-3. Disassembly and Assembly Instructions
5-3-1. Disassembly
1) Unscrew the REAR at the 4 points.
1
1) Disassemble the REAR from the LOWER using
a diassembly stic.
2
3
1) Detach the volume key F-PCB , LCD CONNECTOR
and MIC from the FRONT ASS'Y.
2) Disassemble the PBA from the FRONT ASS'Y.
4
1) Disassemble the KEYPAD.
2) Detach the DUST PROTECTION TAPE from the LOWER.

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Exploded View/Disassembly&Assembly Instructions
5-5
This Document can not be used without Samsung's authorization
1) Be careful not to make scratch and molding damage!
2) Be careful not to damage CON TO CON FPCB! 1) Be careful not to make scratch and molding damage!
1) Be careful not to make scratch and molding damage! 1) Be careful not to make scratch and molding damage!
2) Be careful not to damage F-PCBs and Wire.
1) Disassemble the MOTOR, SPEAKER & CAMERA
from the FOLDER LOWER by using a pincette.
5 6
7 8
1) Remove screw rubber caps and unscrew the FOLDER
UPPER at the 2 point.
1) Push the hinge between FOLDER UPPER and
FOLEDR LOWER, and disassemble the FRONT from
the FOLDER.
1) By using an assembly stick, disassemble
FOLDER UPPER from FOLDER LOWER
(Use disassemble hole)

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Exploded View/Disassembly&Assembly Instructions
5-6
This Document can not be used without Samsung's authorization
1) Be careful not to make scratch and molding damage.
2) Be careful not to damage F-PCBs.
1) Be careful not to make scratch and molding damage!
2) Be careful not to damage the LCD module.
9 10
1) Detatch insulation tapes of the connectors.
2) Disassemble the LCD F-PCB and CAMERA
module from the LCD module.
1) Disassemble the LCD module from the
FOLDER LOWER.

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Exploded View/Disassembly&Assembly Instructions
5-7
This Document can not be used without Samsung's authorization
1) Be careful not to make scratch and molding damage! 1) Be careful not to make scratch and molding damage!
2) Be careful not to damage the LCD F-PCB.
1) Be careful not to make scratch and molding damage!
2) Arrange Wires clearly as above picture is shown.
1) Be careful not to make scratch and molding damage!
2) Be careful not to damage the CAMERA F-PCB.
5-3-2. Assembly
1
3
1) Insert the LCD & CAMERA F-PCB to LCD module.
2) Attach the insulation tape on the connectors.
1) Insert the SPEAKER into FOLDER LOWER.
2) Twist MOTOR wire third times and insert into
the FOLDER LOWER.
2
4
1) Insert the LCD F-PCB into the FOLDER LOWER.
1) Insert the CAMERA module into the FOLDER LOWER.

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Exploded View/Disassembly&Assembly Instructions
5-8
This Document can not be used without Samsung's authorization
1) Be careful not to make scratch and molding damage! 1) Be careful not to make scratch and molding damage!
Use 1.1 ± 0.1 Kgf·Cm
1) Be careful not to make scratch and molding damage.
2) Be careful not to damage LCD F-PCB. 1) Be careful not to make scratch and molding damage.
5
1) Assemble FOLDER UPPER with FOLDER LOWER from
the upper end to the lower end.
1) Screw up the FOLDER LOWER at two point.
2) Attach screw rubber caps on the screws
by using a pincette.
6
7
8
1) Insert LCD FPCB(which is connected to
folder)into the bottom of FRONT HINGE.
2) The folder HINGE sould be inserted into
the front's hole.
3) Assemble FOLDER with FRONT.
1) Attach the dust protection tape on
the inside of the FRONT.

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Exploded View/Disassembly&Assembly Instructions
5-9
This Document can not be used without Samsung's authorization
1) Be careful not to make scratch and molding damage! 1) Be careful not to make scratch and molding damage!
2) Be careful not to unstably connect CON TO CON.
1) Be careful not to make scratch and molding damage!
2) Be careful not to damage LOCKER.
1) Be careful not to make scratch and molding damage!
2) Be careful not to damage LOCKER.
3) Use 1.3 ± 0.1 Kgf·Cm
9
1) Insert the KEYPAD into FRONT.
10
11 12
1) Put the PBA on the FRONT ASS'Y.
2) Joint CON to CON FPCB with the PBA.
3) Attach the Volume key F-PCB to the FRONT.
4) Put the MIC on the FRONT MIC HOLE.
1) Locate VOLUME KEY and assemble REAR with
FRONT.
2) Assembly the upper side of the REAR like
the picture.
1) Screw the REAR at 4 point