Samsung SGH-U300 Service 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

GSPN (Global Service Partner Network)
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

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	2007. 05. Rev.1.0
International and/or domestic law.

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. Chart of Troubleshooting
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

1. Specification

1-1. GSM/DCS1800/PCS1900 General Specification

		EGSM 900	DCS1800	PCS1900
		Phase 2	Phase 1
	Freq. Band[MHz]	880~915	1710~1785	1850~1910
	Uplink/Downlink	925~960	1805~1880	1930~1990
	ARFCN range	0~124 & 975~1023	512~885	512~810
	Tx/Rx spacing	45 MHz	95 MHz	80 MHz
	Mod. Bit rate/	270.833 kbps	270.833 kbps	270.833 kbps
	Bit Period	3.692 us	3.692 us	3.692 us
	Time Slot	576.9 us	576.9 us	576.9 us
	Period/Frame
		4.615 ms	4.615 ms	4.615 ms
	Period
	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 ~ 19 pcl	0 pcl ~ 15 pcl	0 pcl ~ 15 pcl
	Sensitivity	-102 dBm	-100 dBm	-100 dBm
	TDMA Mux	8	8	8
	Cell Radius	35 Km	2 Km	-

1-1

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Specification

1-2. GSM TX power class

TX Power	EGSM900		TX Power		DCS1800		TX Power	PCS1900
control level			control level				control level
5	33±2 dBm		0		30±3 dBm		0	30±3 dBm
6	31±2 dBm		1		28±3 dBm		1	28±3 dBm
7	29±2 dBm		2		26±3 dBm		2	26±3 dBm
8	27±2 dBm		3		24±3 dBm		3	24±3 dBm
9	25±2 dBm		4		22±3 dBm		4	22±3 dBm
10	23±2 dBm		5		20±3 dBm		5	20±3 dBm
11	21±2 dBm		6		18±3 dBm		6	18±3 dBm
12	19±2 dBm		7		16±3 dBm		7	16±3 dBm
13	17±2 dBm		8		14±3 dBm		8	14±3 dBm
14	15±2 dBm
			9		12±4 dBm		9	12±4 dBm
15	13±2 dBm		10		10±4 dBm		10	10±4 dBm
16	11±3 dBm		11		8±4 dBm		11	8±4 dBm
17	9± 3dBm		12		6±4 dBm		12	6±4 dBm
18	7±3 dBm		13		4±4 dBm		13	4±4 dBm
19	5±3 dBm		14		2±5 dBm		14	2±5 dBm
			15		0±5 dBm		15	0±5 dBm
		1-2
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2. Exploded View and Parts List

2-1. Cellular phone Exploded View

QFU01
QLC01		QKP01
	QAU01
QMW01	QMI01 : GH30-00177C	QME01
	QMI03
QCW01		QMI01 : GH81-06085A
	QHI01
		QFR01
	QFL01
QSC01	QSC37
QCA01		QAN02
QHI19
QCR12	QCB01
		QBA01
QFL04	QVK01
	QCR32
		QMP01
	QSC31
	QMO01	QSC29
		QCR32
		QRE01

QVO01

QIF01

QCR12	QCR06

QSD01

2-1

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Exploded View and Parts List

2-2. Cellular phone Parts list

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

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Exploded View and Parts List

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

2-3

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Exploded View and Parts List

2-3. Disassembly

1		2

1) Remove the SCREW COVER on the REAR.

caution

1) Be careful of damage of cover and scratch.

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.

3

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.

4

1)Seperate the battery from the SET.

2)After disassemble the LCD CONNECTOR,

seperate a PCB fixed SCREW 2 POINT.

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.

2-4

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Exploded View and Parts List

5		6

1)	Separate a RF Cable.
2)	Separate a PCB.	1) Separate a Intena and front Ass'y.
	caution	caution

1) Be careful of damage and change of cable and 1) When disassembling EL key FPCB, be careful

connector.	not to be damaged on the FPCB.
2) Be careful of damage of BGA components.	1) Be careful of bending of a Cable.

7

8

	1)	Take off a KEY PAD flange fixed Tape.	1)			Separate a KEY PAD care about flange.
	2)	Take off a PCB RUBBER BASE.			caution
	caution		1)			Be careful of damage of appearance and
	1)	Remove these using tweezers.				scratch.
	2)	Be careful of damage of appearance and
			2)			Be careful of damage of a key PAD.
		scratch.
			2-5
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Exploded View and Parts List

9

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.

10

1)Separate the Front and Key FPCB.

caution

1)When separate it, be careful of bending of the front.

2)Be careful to be squeezed and tear a FPCB and connector.

3)Be careful of damage of appearance and

scratch.

11

12

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.

1) Take off a CAMERA COVER.

caution

1)Be careful of damage of appearance and scratch.

2-6

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Exploded View and Parts List

13		14

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.

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.

15		16

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)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.

2-7

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Exploded View and Parts List

17

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

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.

19

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.

2-8

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Exploded View and Parts List

2-4. Assembly
1	2
1) Put LCD Ass'y in Folder Lower.
caution	1) Assemble Folder Lower and Folder Upper.

1)	Disassemble carefully with lower component of		caution
	LCD.		1)	Be careful of damage of appearance and
2)	Be	careful of damage of appearance and		scratch.
	scratch.		2)	Assemble a sub window as slightly raising and
3)	Be	careful of damage of FPCB.		setting up.

3

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.

4

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.

2-9

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Exploded View and Parts List

5

1)Attach the LCD on the LCD Bracket by guide lib of LCD.

2)Solder the SPK/MOT.

7

KEY PAD

FLANGE PCB RUBBER BASE

FIXED TAPE

6

1) Assemble the LCD and the MAIN PBA.

caution

1) Connect the LCD F-PCB connector on the MAIN PBA.

8

1)Attach the fixed Tape of KEY PAD flange.

2)Attach PCB RUBBER BASE.

1)Using tweezers, fix the hinge and E-ring inner of Front.

2-10

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Exploded View and Parts List

9

10

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.)

1)Assemble a camera cover.

caution

1)When assemble, be careful of direction of LCD CONNECTOR.

2)When assemble, check some click sound.

11

12

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 the fintenna.

caution

1) Be careful of the damage of cover and scratch.

2-11

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Exploded View and Parts List

13		14

1) Screw up two PCB fixed screws.	1)	Connect RF CABLE on the connector.
caution	caution
1) Be careful of damage of cover and scratch.	1)	Keep in order RF cable around MFA.

15	16

1) Assemble REAR from lower part.

			2) Screw the six screws.
			3) Put screw cap in upper 2 point.
	1)	Assemble the battery.
			caution
	2)	Assemble the LCD CONNECOTOR.
			1)	Be careful of damage of cover and scratch.
	3)	Assemble the BATT. CONNECOTOR.
			2)	When assemble, be careful not to be chewed volume
	4)	Assemble the KEY FPCB CONNECOTOR.		key and Ear Cover.
	caution		3)	upper(2 point)/lower(4 point)SCREW size is
	1) Be careful of damage of CONNECTOR FPCB.			different.

2-12

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Exploded View and Parts List

2-5. LCD Window Assembly

1

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)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.

2-13

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Exploded View and Parts List

3

1) When attach a LCD window again, Check reverse disassembly order or a assembly standard.

caution

1) Attach with a standard reference in circles.

2-14

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3. Flow Chart of Troubleshooting

3-1 BASEBAND

3-1-1. Power ON

'Power On' does not work

Yes

Check the current consumption more than 100mA

Yes

Check the VBAT

more than 3.3V

Yes

Check the

VLDO_7_1.8V of UCP300 is more

than 1.8V

Yes

Check U201 pin 1 = 1.8V

pin 4 = 1.6V pin 7,9 = 1.5V

Yes

Check VRF of

UCP300=2.9V

Yes

Check C110 & C112

Freq = 13MHz

Vp-p > 0.8V

Yes

Check the initial operation

Yes

END

No

Download again

No

Charge the Battery

No

Check UCP300 and C325

No

Check U307

No		Check UCP300
		and C326

No

Check the clock C110 & C112

3-1

Flow Chart of Troubleshooting

3-2

Flow Chart of Troubleshooting

RV _F 9.2 VV CC _A 9.2 VV CC _D 8.1 VV CC _D .2 V9

V9.

C133

9

2B CCV

CH3 01

V5.1 CRVT

ODVV51L1.

23

003 HB45 RV 00 1MCNCT

503 R R603

823C

C

V29. DCC V

723 C 6

333 C

V9.2

23C

FRV

4

V9.2

C23

A_

CCV CS

523 C

P

V8.

1

DCC V

5C31

KL TTSAA CMSPSIC RMCCSSPSIIDMPS MOIIISSTMRS KLMCSI

M V SI 9.2 V B CCV NE DEYLEK

913 C

323 C

UUSCCSPP_KL ODDSSPUUPI

GRH CI

MRA LAC TR

R930

Q WPEE NRTI RKPRST

T A B

V

TAB V

01C

11C 31J 9N 01R 01P 11J 11K 41K

21K H11 21G G31 F31 51F 21C 41A C9 01D 01B 11B A21 21B 31A 21J G11 41F

8K 8L 7N M7

41E 31E E11 21F 41D

51D 01E 01A 9E 0H1

233 C

ABT V

KCL TSR OPI OIM TSR KLC UP UP U SI MSI MSI

M C V V V V 7 6 B A 5 B A 4 3 2 1 C SVI RVT RDDEL2 RDDE1L RDGRNI RDBVI OVDL ODVL S5VL S5VL ODVL S4VL S4LV ODVL ODVL ODVL ODVL CAV

CSP CSP CSP CSP NCS CKSL ODS DSI

TXE TAB VRD NES SER V V CHB HCI HC

2XU 1XU CDAA CDAA

NE_RGNR_BIV

9L

R033

43DDV 21DDV

RFEV FERC NMAL

5DDV

CT

3

31B

76DDV

QRTNI

01L

03

QDNG

8E

RWP_PEEK

9M

C

DNG_1CSP

51B

EDOM

01N

DNG_2CSP

51K

TESER_O

9K

1WSP_FUB

11F

DNG_RUCH

1WSP_FUB

7L

1DDV

RWP_NO

3J

RWP_N1WS

51C

2DDV

GIJ_NO

3M

RWP_2WS

41C

3DDV

6N

PSD_TNI

5N

DDV_1OI

RTNID

3P

4J

DDV_2OI

CDA_4XUA

5P

M31KLC_CM

5G

1SSV

CM

6R

2SSV

QANEOX

20

4K

QANEOX

1D

3SSV

K23KLC

2R

CTR_KLC

4N

3

4SSV

C

6P

DDDV

ODIAD

11N

6M

01M

DDNG

IDIAD

6L

C403

6A

BDDV

NRIAD

4P

C733

VDNG

00

6F

BDNG

KCIAD

4R

11L

VDDV

NGERV

41R

31P

DDV_LTCO

P3C

PGERV

31M

4C

MCVXV

31R

XUA_TUO_N

DNG_LTCO

4B

NTUOXUA

1

U

31L

XUA_TUO_P

PTUOXUA

31K

XUA_NI_N

03

31D

XUA_3CDA

NNIXUA

41L

C

7F

1SDNG

PNIXUA

51M

XUA_NI_P

2SDNG

CIM_TUO_N

8F

NTUOCIM

51P

3SDNG

CIM_TUO_P

9F

PTUOCIM

51N

4SDNG

CIM_NI_N

01F

NNICIM

41M

5SDNG

CIM_NI_P

7G

PNICIM

41N

6SDNG

TUOA_B_N

8G

NBTUOA

21P

7SDNG

TUOA_B_P

9G

PBTUOA

21R

8SDNG

TUOA_A_N

01G

NATUOA

21N

9SDNG

TUOA_A_P

6H

PATUOA

11P

7H

01SDNG

XTR_Q_N

11SDNG

NQXTXR

8H

6C

21SDNG

XTR_Q_P

9H

PQXTXR

7C

31SDNG

XTR_I_N

7J

NIXTXR

6D

41SDNG

XTR_I_P

8J

PIXTXR

7D

51SDNG

9J

1FERAR

6B

61SDNG

01J

2FERAR

5B

71SDNG

CPS WRN NREEST

01K

0LOCT CTL1O OCT2L OCT3L OCT4L OCT5L OCTL6 OCTL7

RES1EL 2REESL DRAES CRKES

TFR_PMARV

633 C

5DB1 DB14 DB31 DB21 DB11 DB01 DB9 DB8 DB7 DB6 DB5 DB4 B3D DB2 DB1 0DB BA8 BA7 BA6 BA5 BA4 BA3 BA2 AB1 AB0 OI|

1

5CN

PXT

7E

2

6CN

CFA

9D

CFA

2D 3D 3E 2E 3F F2 1F F4 G4 G3 5H 6J 5J 3K K2 K1 K5 K7 M1 2M 2N 1N 5L 1P 6K 3L 2L R3

E6 C5 F5 E5 4A 6G 3B 3A

B1 2A C1 C2

CEK HC RAE

)51 )41)31)21 )11)01 )9)8 )7)6 )5)4 )3)2 )1)0 (BD (BDDD(B(B (BBDD( DD(B(B DD(B(B (BDD(B (BDD(B (BDD(B )) ))) )) )) P PPP PP PP PP PP PP PP 87(B(B 654(B(B(B 32(B(B B10((B SD SDSDSD SDSD SDSD DSSD SDSD SDSD SDSD APAP APAPAP APAP APAP SDDS SDDDSS SDDS SDDS

						OIP NWRTES SD PER SDHS ALF	1S2SLE NE BVBVSE L MMD A AAO TX PPM MAP	NENE FRTX MMAAPP	ELRTAD KLC ESRE RE S S
)51 :0(B D		)8:0 (BA
_PS D		SDP

3-3

Flow Chart of Troubleshooting

VBAT					HP_CORE_1.6V VCCD_1.8V
823		U307			L304		D300
R	1 ADJ2		SW2	10
	2 MODE|DATA		EN2	9			VLDO1_1.5V
	3		GND	8	L305
	4 VIN			7
	FB1	2	EN1	6
	5 DEF_1	DN	SW1
		G
		11
					C345	C344	C346
TA301

3-4