Samsung SGH-U300 User manual

GSM TELEPHONE
SGH-U300
GSM TELEPHONE CONTENTS
1. Specification
2. Exploded View and Parts list
3. Chart of Troubleshooting
4. Array course control
5. Block Diagrams
6. PCB Diagrams
7. MAIN Electrical Parts List
8. Reference data
9. Safety Precautions
10. Product Function

This Service Manual is aproperty 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. 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)

Contents
1. Specification
1-1. GSM/CDMA General Specification ...........................................................................1-1
1-2. GSM TX power class ...............................................................................................1-2
2. Exploded View and Parts list
2-1. Cellular phone Exploded View ..................................................................................2-1
2-2. Cellular phone Parts list ............................................................................................2-2
2-3. Disassembly ...............................................................................................................2-4
2-4. Assembly ....................................................................................................................2-8
3. ChartofTroubleshooting
3-1. Baseband ............................................................................................................3-1
3-1-1. Power ON .....................................................................................................3-1
3-1-2. System Initial ................................................................................................3-6
3-1-3. SIM Part .......................................................................................................3-8
3-1-4. Charging Part .............................................................................................3-10
3-1-5. Microphone Part .........................................................................................3-13
3-1-6. Speaker Part ..............................................................................................3-16
3-1-7. Receiver Part .............................................................................................3-20
3-1-8. Camera Part ..............................................................................................3-22
3-1-9. LCD .............................................................................................................3-26
3-2. RF ......................................................................................................................3-13
3-2-1. EGSM Receiver .........................................................................................3-30
3-2-2. EGSM Transmitter .....................................................................................3-31
3-2-3. DCS Receiver ............................................................................................3-32
3-2-4. DCS Transmitter ........................................................................................3-33
3-2-5. PCS Receiver .............................................................................................3-34
3-2-6. PCS Transmitter .........................................................................................3-35
3-2-7. UMTS Receiver ..........................................................................................3-40
3-2-8. UMTS Transmitter ......................................................................................3-41
3-2-9. BLUETOOTH ..............................................................................................3-45

Contents
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. Block Diagrams
6. PCB Diagrams
7. MAIN Electrical Parts List
8. Reference data
8-1. Reference Abbreviate ..............................................................................................8-1
9. Safety Precautions
9-1. Repair Precaution ......................................................................................................9-1
9-2. ESD(Electrostaically Sensitive Devices) Precaution ................................................9-2
10. Product Function

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1. Specification
1-1
This Document can not be used without Samsung's authorization
1-1. GSM/DCS1800/PCS1900 General Specification
EGSM 900
Phase 2
DCS1800
Phase 1 PCS1900
Freq. Band[MHz]
Uplink/Downlink
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
ARFCN range 0~124 & 975~1023 512~885 512~810
Tx/Rx spacing 45 MHz 95 MHz 80 MHz
Mod. Bit rate/
Bit Period
270.833 kbps
3.692 us
270.833 kbps
3.692 us
270.833 kbps
3.692 us
Time Slot
Period/Frame
Period
576.9 us
4.615 ms
576.9 us
4.615 ms
576.9 us
4.615 ms
Modulation 0.3 GMSK 0.3 GMSK 0.3 GMSK
MS Power 33 dBm~5 dBm 30 dBm~0 dBm 30 dBm~0 dBm
Power Class 5 pcl ~19pcl 0pcl ~15pcl 0pcl ~15pcl
Sensitivity -102 dBm -100 dBm -100 dBm
TDMA Mux 8 8 8
Cell Radius 35 Km 2Km -

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Specification
1-2
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1-2. GSM TX power class
TX Power
control level EGSM900
533±2
dBm
631±2
dBm
729±2
dBm
827±2
dBm
925±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± 3dBm
18 7±3 dBm
19 5±3 dBm
TX Power
control level DCS1800
030±3
dBm
128±3
dBm
226±3
dBm
324±3
dBm
422±3
dBm
520±3
dBm
618±3
dBm
716±3
dBm
814±3
dBm
912±4
dBm
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 PCS1900
030±3
dBm
128±3
dBm
226±3
dBm
324±3
dBm
422±3
dBm
520±3
dBm
618±3
dBm
716±3
dBm
814±3
dBm
912±4
dBm
10 10±4 dBm
11 8±4 dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm

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2. Exploded View and Parts List
2-1
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2-1. Cellular phone Exploded View
QKP01
QFU01
QLC01
QMW01
QCW01
QSC01
QCA01
QHI19
QCR12
QFL04
QMI01 : GH30-00177C
QMI03
QHI01
QFL01
QAU01 QME01
QMI01 : GH81-06085A
QFR01
QBA01
QMP01
QSC29
QCR32
QRE01
QSD01
QCR06
QSC37
QCB01
QVK01
QCR32
QSC31
QMO01
QVO01
QIF01
QCR12
QAN02

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Exploded View and Parts List
2-2
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Design LOC Description SEC CODE
QAN02 INTENNA-SGH-U300 GH42-01154A
QAU01 AUDIO-RECEIVER 3009-001262
QBA01 SOFT BATTERY PACK-690MAH,BLK,E GH43-02812A
QCA01 CAMERA MODULE GH59-04215A
QCB01 AS-COXIAL CABLE GH81-06648A
QCR05 SCREW-MACHINE 6001-001478
QCR12 SCREW-MACHINE 6001-001530
QCR12 SCREW-MACHINE 6001-001530
QCR17 SCREW-MACHINE 6001-001460
QCR32 SCREW-MACHINE 6001-001700
QCW01 PMO-CAM WINDOW GH72-37590A
QFL01 ASSY COVER-F/LOWER SUB GH98-03829B
QFL04 ASSY DECO-F/LOWER SUB GH98-03868B
QFR01 ASSY COVER-FR SUB GH98-03750B
QFU01 ASSY COVER-F/UPPER GH98-03752B
QHI01 ASSY HINGE GH98-03062A
QHI19 IPR-HINGE BLOCK GH70-02395A
QIF01 PMO-COVER IF GH72-37584B
QKP01 ASSY KEYPAD-(RUSS/BLU) GH98-04906A
QLC01 LCD-MODULE SGHU300 GH07-01110A
QME01 KEY FPCB-SGHU300 KEY PBA GH59-04213A
QMI01 MICROPHONE-ASSY-5.25MM GH30-00177C
QMI01 AS-MIC SVC GH81-06085A
QMI03 RMO-MIC HOLDER FR GH73-07324A
QMI03 RMO-MIC HOLDER FR GH73-07324A
QMO01 MOTOR DC-MOTOR,SPEAKER MODULE( GH31-00316A
QMP01 PBA MAIN-SGHU300 GH92-03487A
QMW01 AS-LCD WINDOW GH81-06234A
QRE01 ASSY COVER-REAR COVER SUB GH98-03830B
QSC01 RMO-RUBBER LOWER SCREW CAP GH73-09620B
QSC29 RMO RUBBER-BT GH73-10606A
QSC31 RMO RUBBER-RESET DOME GH73-10607A
QSC37 RMO-RUBBER PCB BASE GH73-09146A
QSD01 PMO-SIM COVER GH72-39826B
QVK01 KEY FPCB-SGHU300 VOLUME KEY GH59-04214A
QVO01 PMO-KEY VOLUME GH72-39356A
2-2. Cellular phone Parts list

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Exploded View and Parts List
2-3
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Description SEC CODE
CBF INTERFACE-DLC,X830,SIL,PCB GH39-00720B
ADAPTOR-SGHE690,SIL,EU,A_TYPE GH44-01361B
EARPHONE-EARPHONE,SGHE490,SIL, GH59-03883B
LABEL(R)-WATER SOAK GH68-09361A
TAPE INSU GH74-31680A
MPR-INSU TAPE GH74-31681A
MPR-SPONGE PCB A GH74-31689A
MPR-TAPE FPCB GH74-31994A
TAPE-GASKET BT GH74-33420A
AS-LCD TAPE GH81-06235A
AS-LCD SUB GH81-06335A
TAPE INSU GH74-31679A
TAPE INSU GH74-31710A
VINYL-BOHO FOLDER UPPER GH74-32275A
SPONGE-CAM GH74-30241A
TAPE-GASKET BATT CONN GH74-33669A
VINYL-BOHO REAR GH74-34439A
S/W CD-SGHU300 PC STUDIO 3.1 GH46-00408A
MANUAL-SFC GH68-04336A
MANUAL USERS-EU RUSSIAN GH68-14481A
BAG PE 6902-000634
LABEL(P)-UNIT SEAL GH68-00518B
LABEL(R)-MAIN(SER) GH68-14742B
BOX(P)-UNIT MAIN(SER) GH69-05380B
CUSHION-CASE(EU) GH69-05381A

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Exploded View and Parts List
2-4
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①
②
③
1) Disassemble the SCREW 6 POINT.
2) Disassemble this set from upper part.
※caution
1) Be careful of damage of cover and scratch.
2) When disassemble it, be careful not to change
on the REAR.
1) Remove the SCREW COVER on the REAR.
※caution
1) Be careful of damage of cover and scratch.
1) Seperate the battery from the SET.
2) After disassemble the LCD CONNECTOR,
seperateaPCBfixedSCREW2POINT.
※caution
1) When separate the battery, using a stick's no
sharp side, put this stick in the picture's grey
part with lever theory.
2) Be careful of damage and change a battery.
1) Separate the LCD CONNECOTOR.
2) Separate the BATT. CONNECOTOR.
3) Separate the KEY FPCB CONNECOTOR.
※caution
1) Be careful not to occur some damages each
LCD CONNECTOR FPCB.
2
3 4
1
2-3. Disassembly

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Exploded View and Parts List
2-5
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1) Separate a Intena and front Ass'y.
※caution
1)WhendisassemblingELkeyFPCB,becareful
not to be damaged on the FPCB.
1) Be careful of bending of a Cable.
1) Separate a RF Cable.
2) Separate a PCB.
※caution
1) Be careful of damage and change of cable and
connector.
2) Be careful of damage of BGA components.
1) Separate a KEY PAD care about flange.
※caution
1) Be careful of damage of appearance and
scratch.
2) Be careful of damage of a key PAD.
1) Take off a KEY PAD flange fixed Tape.
2) Take off a PCB RUBBER BASE.
※caution
1) Remove these using tweezers.
2) Be careful of damage of appearance and
scratch.
6
7 8
5

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Exploded View and Parts List
2-6
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1) Separate the Front and Key FPCB.
※caution
1) When separate it, be careful of bending of the
front.
2)BecarefultobesqueezedandtearaFPCB
and connector.
3) Be careful of damage of appearance and
scratch.
1) Seperate a key FPCB carefully about a
connector of KEY FPCB and MIC.
※caution
1) Be careful of damage of a FPCB crack and
connector.
1) Take off a CAMERA COVER.
※caution
1) Be careful of damage of appearance and
scratch.
1) Put up the Folder stopper and turn.
2) Disassemble two screws.
※caution
1) Remove these using tweezers.
2) Be careful of damage of appearance and
scratch.
10
11 12
9

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Exploded View and Parts List
2-7
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1) Disassemble a screw of hinge's block.
2) Seperate a hinge's block on FOLDER LOWER.
※caution
1) Be careful of damage of appearance and
scratch.
1) Disassemble a Folder Ass'y and Front Ass'y.
※caution
1) Be careful of damage of appearance and
scratch.
2) Be careful of damage of a F-PCB.
1) Using tweezers, push a hinge and E-ring in
Front.
※caution
1) Be careful of damage a FPCB.
2) Be careful of damage of appearance and
scratch.
1) Disassemble a camera component.
※caution
1) Be careful of damage of a camera component
and alien substances.
2) Be careful of damage of a FPCB crack and
connector.
3) Be careful of damage of appearance and
scratch.
14
15 16
13

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Exploded View and Parts List
2-8
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1) Seperate a Folder Lower and LCD.
※caution
1) Disassemble carefully with lower component of LCD.
2) Be careful of damage of appearance and scratch.
3) Be careful of damage of FPCB.
1) Separate Folder Lower and Folder Upper.
※caution
1) Be careful of damage of appearance and
scratch.
2) Separate a sub window as slightly raising and
setting down.
1) Take off screw caps.
2) At FOLDER LOWER, separate two screws.
※caution
1) Be careful of damage of appearance and
scratch.
2) Be careful of damage of CAMERA FPCB.
18
19
17

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Exploded View and Parts List
2-9
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1) Assemble Folder Lower and Folder Upper.
※caution
1) Be careful of damage of appearance and
scratch.
2) Assemble a sub window as slightly raising and
setting up.
1) Put LCD Ass'y in Folder Lower.
※caution
1) Disassemble carefully with lower component of
LCD.
2) Be careful of damage of appearance and
scratch.
3) Be careful of damage of FPCB.
1) Assemble a hinge block at FOLDER LOWER.
2) Screw up a screw.
※caution
1) Be careful of damage of appearance and
scratch.
2) Be careful of insertion direction of a hinge block.
1) Screw up two screws at FOLDER LOWER.
2) Put in screw caps.
※caution
1) Be careful of damage of appearance and
scratch.
2) Be careful of damage of FPCB.
2
3 4
1
2-4. Assembly

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Exploded View and Parts List
2-10
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KEY PAD
FLANGE
FIXED TAPE PCB RUBBER BASE
1) Assemble the LCD and the MAIN PBA.
※caution
1) Connect the LCD F-PCB connector on the MAIN
PBA.
1) Attach the LCD on the LCD Bracket by guide
lib of LCD.
2) Solder the SPK/MOT.
1) Using tweezers, fix the hinge and E-ring inner
of Front.
1) Attach the fixed Tape of KEY PAD flange.
2) Attach PCB RUBBER BASE.
6
7 8
5

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Exploded View and Parts List
2-11
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1) Assemble the fintenna.
※caution
1) Be careful of the damage of cover and scratch.
1) Screw up two screws.
2) Put up the Folder stopper and turn.
※caution
1) Be careful of the damage of cover and scratch.
2) Check the loosing of stopper.
1) Assemble a camera cover.
※caution
1) When assemble, be careful of direction of LCD
CONNECTOR.
2) When assemble, check some click sound.
1) Put in a camera at decided spot.
2) Assemble camera connector and camera.
※caution
1) Be careful of damage of F-PCB.
2) Assemble the camera with direct direction.
(Assemble that flat part is faced with below part.)
10
11 12
9

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Exploded View and Parts List
2-12
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①
②
③
1) Assemble REAR from lower part.
2) Screw the six screws.
3) Put screw cap in upper 2 point.
※caution
1) Be careful of damage of cover and scratch.
2) When assemble, be careful not to be chewed volume
key and Ear Cover.
3) upper(2 point)/lower(4 point)SCREW size is
different.
1) Assemble the battery.
2) Assemble the LCD CONNECOTOR.
3) Assemble the BATT. CONNECOTOR.
4) Assemble the KEY FPCB CONNECOTOR.
※caution
1) Be careful of damage of CONNECTOR FPCB.
1) Connect RF CABLE on the connector.
※caution
1) Keep in order RF cable around MFA.
1) Screw up two PCB fixed screws.
※caution
1) Be careful of damage of cover and scratch.
14
15 16
13

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Exploded View and Parts List
2-13
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2-5. LCD Window Assembly
1) Be careful not to leave fingerprint on Main LCD.
※caution
1) Work it slowly.
2) Be careful because Main window is broken whenyou put it out suddenly.
3) when you disassemble it, be careful not to leave some a foreign substance and fingerprint on LCD
window.
1) Check a groove between LCD MODULE and Main window.
2) Using a thin tool that is not sharp, put it in the groove and remove Main window slowly.
※caution
1) Work it slowly.
2) Be careful because Main window is broken whenyou put it out suddenly.
3) when you disassemble it, be careful not to leave some a foreign substance and fingerprint on LCD
window.
2
1

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Exploded View and Parts List
2-14
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1) When attach a LCD window again, Check reverse disassembly order or a assembly standard.
※caution
1) Attach with a standard reference in circles.
3