Samsung S7550B Service Manual

GSM TELEPHONE

GT-S7550B

efrcom

GSM TELEPHONE

CONTENTS

Safety Precautions

1. Specification

2. Product Function

3. Array course control

4. Exploded View and Parts List

5. Main Electrical Parts List

6. Block Diagrams

7. PCB Diagrams

8. Flow Chart of Troubleshooting

9. Reference data

10. Disassembly and Assembly

11.

instructions

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

This Service Manual isaproperty of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.

Africa mea.samsungportal.com

&

ⓒ

Samsung Electronics Co.,Ltd.

2009. 11.

Rev.1.0

MAIN Electrical Parts List

6.

SEC CODE Design LOG Discription

0403-001547 0404-001172 0406-001208 0406-001288 0406-001288 0406-001369 0502-001322 0801-002882 0801-003140 0801-003200 1001-001410 1001-001585 1001-001593 1001-001607 1003-002277 1108-000266 1201-002864 1201-002921 1201-002955 1203-004340 1203-004819 1203-005675 1203-005809 1203-005916 1205-003761 1205-003866 1205-003868 1205-003870 1205-003903 1209-001817 1404-001221 2007-000138 2007-000140 2007-000144 2007-000148 2007-000156 2007-000162 2007-000163 2007-003014 2007-007100 2007-007132 2007-007148 2007-007489 2007-007981

D602,D700,D701,D800 DIODE-TVS

D603 DIODE-ZENER D702 DIODE-SCHOTTKY

ZD800 DIODE-TVS

D801,D803 DIODE-TVS

D601 DIODE-TVS Q400 TR-POWER U300 IC U204 IC U102 IC U500 IC U600 IC U502 IC U202 IC U400 IC

UME300 MEMORY

U501 IC PAM100 IC PAM101 IC

U701 IC

U700 IC

U100 IC

PM400 IC

U702 IC

U101 IC

U200 IC

U201 IC UCP300 IC

U801 IC

U800 IC

VR301 THERMISTOR

R116,R310 R-CHIP

R401 R-CHIP

R404,R405 R-CHIP

R110 R-CHIP

R602 R-CHIP

R117 R-CHIP

R106 R-CHIP

R322 R-CHIP

R403 R-CHIP

R215,R217 R-CHIP

R112 R-CHIP

R312 R-CHIP

R311 R-CHIP

6-1

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MAIN Electrical Parts List

SEC CODE Design LOG Discription

2007-008045 2007-008045 2007-008050 2007-008055 2007-008055 2007-008055 2007-008055 2007-008167 2007-008213 2007-008401 2007-008419 2007-008419 2007-008483 2007-008516 2007-008548 2007-008588 2007-008588 2007-008588 2007-008786 2007-008809 2007-009084 2007-009084 2007-009157 2007-009171 2007-009171 2007-009194 2007-009208 2007-009212 2007-009212 2007-009954 2007-010095 2203-000233 2203-000278 2203-000386 2203-000550 2203-000627 2203-000696 2203-000725 2203-000812 2203-002709 2203-005446 2203-005503 2203-005682 2203-005725

R219,R313,R314,R315 R-CHIP R319,R320,R507,R508 R-CHIP

R111 R-CHIP

R204,R205,R211,R212 R-CHIP R216,R221,R225,R226 R-CHIP R227,R228,R302,R308 R-CHIP

R309,R316,R318 R-CHIP

R411 R-CHIP

R323 R-CHIP

R321 R-CHIP

R100,R102,R103,R104 R-CHIP R324,R500,R502,R506 R-CHIP

R109,R114 R-CHIP

R115,R804,R805,R806 R-CHIP

R501,R503,R504 R-CHIP R329,R330,R409,R410 R-CHIP R704,R705,R706,R810 R-CHIP

R811 R-CHIP

R108,R113 R-CHIP R300,R301,R306,R307 R-CHIP R813,R814,R815,R816 R-CHIP

R817,R818 R-CHIP

R317,R334 R-CHIP R206,R207,R208,R209 R-CHIP

R210,R809 R-CHIP

R812 R-CHIP

R600,R601 R-CHIP R800,R801,R802,R803 R-CHIP

R807,R808 R-CHIP

R107 R-CHIP R400 R-CHIP C260 C-CERAMIC,CHIP C247 C-CERAMIC,CHIP

C120,C530,C531 C-CERAMIC,CHIP

C405,C407 C-CERAMIC,CHIP

C716,C717 C-CERAMIC,CHIP

C261 C-CERAMIC,CHIP C424 C-CERAMIC,CHIP C110 C-CERAMIC,CHIP

C336,C706 C-CERAMIC,CHIP

C239,C248,C249 C-CERAMIC,CHIP

C135 C-CERAMIC,CHIP

C118,C121,C154,C186 C-CERAMIC,CHIP

C255 C-CERAMIC,CHIP

6-2

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MAIN Electrical Parts List

SEC CODE Design LOG Discription

2203-005727 2203-005729 2203-005731 2203-005731 2203-005731 2203-005732 2203-005732 2203-005732 2203-005732 2203-005736 2203-005736 2203-005736 2203-005789 2203-005792 2203-005806 2203-005968 2203-006048 2203-006048 2203-006048 2203-006123 2203-006190 2203-006194 2203-006194 2203-006194 2203-006194 2203-006260 2203-006305 2203-006305 2203-006318 2203-006361 2203-006399 2203-006399 2203-006399 2203-006399 2203-006400 2203-006410 2203-006423 2203-006423 2203-006423 2203-006423 2203-006423 2203-006423 2203-006423 2203-006423

C130,C257 C-CERAMIC,CHIP

C170,C175 C-CERAMIC,CHIP C515,C516,C523,C525 C-CERAMIC,CHIP C604,C606,C721,C722 C-CERAMIC,CHIP

C811,C812 C-CERAMIC,CHIP C104,C107,C109,C180 C-CERAMIC,CHIP C513,C518,C519,C526 C-CERAMIC,CHIP C528,C533,C605,C607 C-CERAMIC,CHIP C723,C724,C817,C818 C-CERAMIC,CHIP C106,C131,C158,C167 C-CERAMIC,CHIP C169,C176,C183,C184 C-CERAMIC,CHIP

C333,L117,L118 C-CERAMIC,CHIP

C132,C159 C-CERAMIC,CHIP C147,C155,C162,C168 C-CERAMIC,CHIP

C117 C-CERAMIC,CHIP

C602 C-CERAMIC,CHIP C160,C165,C185,C311 C-CERAMIC,CHIP C313,C315,C320,C427 C-CERAMIC,CHIP

C608,C609 C-CERAMIC,CHIP

C231 C-CERAMIC,CHIP

C503,C504 C-CERAMIC,CHIP C137,C139,C140,C141 C-CERAMIC,CHIP C143,C144,C178,C205 C-CERAMIC,CHIP C236,C305,C306,C324 C-CERAMIC,CHIP

C404 C-CERAMIC,CHIP

C243,C507,C509 C-CERAMIC,CHIP

C153,C215,C230,C233 C-CERAMIC,CHIP

C237,C245,C258 C-CERAMIC,CHIP

C191 C-CERAMIC,CHIP

C400,C603 C-CERAMIC,CHIP C116,C227,C228,C403 C-CERAMIC,CHIP C412,C418,C702,C703 C-CERAMIC,CHIP C714,C715,C806,C810 C-CERAMIC,CHIP

C814,C820,C821 C-CERAMIC,CHIP

C187,C240 C-CERAMIC,CHIP

C151 C-CERAMIC,CHIP C136,C142,C181,C182 C-CERAMIC,CHIP C206,C207,C220,C221 C-CERAMIC,CHIP C241,C300,C301,C302 C-CERAMIC,CHIP C304,C309,C310,C317 C-CERAMIC,CHIP C319,C322,C323,C326 C-CERAMIC,CHIP C327,C328,C331,C332 C-CERAMIC,CHIP C514,C517,C534,C535 C-CERAMIC,CHIP

C800,C801,C802 C-CERAMIC,CHIP

6-3

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MAIN Electrical Parts List

SEC CODE Design LOG Discription

2203-006562 2203-006562 2203-006562 2203-006562 2203-006562 2203-006611 2203-006665 2203-006674 2203-006824 2203-006825 2203-006838 2203-006838 2203-006838 2203-006838 2203-006838 2203-006838 2203-006838 2203-006838 2203-006839 2203-006841 2203-006846 2203-006872 2203-006901 2203-006978 2203-006979 2203-006979 2203-007165 2203-007210 2203-007270 2203-007271 2203-007369 2203-007393 2404-001377 2404-001381 2404-001465 2703-001729 2703-001938 2703-002208 2703-002367 2703-002543 2703-002714 2703-002793 2703-002798 2703-002858

C303,C307,C308,C312 C-CERAMIC,CHIP C314,C316,C318,C321 C-CERAMIC,CHIP C325,C330,C338,C425 C-CERAMIC,CHIP C426,C501,C502,C508 C-CERAMIC,CHIP

C510,C708,C819 C-CERAMIC,CHIP

C157,C161,C188,C250 C-CERAMIC,CHIP

C133 C-CERAMIC,CHIP

C171,C174 C-CERAMIC,CHIP C152,C212 C-CERAMIC,CHIP

C149,C411,C422 C-CERAMIC,CHIP C201,C202,C208,C209 C-CERAMIC,CHIP C210,C211,C213,C214 C-CERAMIC,CHIP C216,C217,C218,C219 C-CERAMIC,CHIP C232,C235,C259,C401 C-CERAMIC,CHIP C402,C409,C413,C414 C-CERAMIC,CHIP C415,C417,C419,C420 C-CERAMIC,CHIP C421,C423,C532,C701 C-CERAMIC,CHIP C704,C705,C707,C709 C-CERAMIC,CHIP

C334,C536 C-CERAMIC,CHIP C600,C601 C-CERAMIC,CHIP C112,C252 C-CERAMIC,CHIP

C527 C-CERAMIC,CHIP C408 C-CERAMIC,CHIP

C719 C-CERAMIC,CHIP C163,C164,C803,C804 C-CERAMIC,CHIP C805,C807,C808,C809 C-CERAMIC,CHIP C203,C222,C225,C226 C-CERAMIC,CHIP

C179,C223,C224 C-CERAMIC,CHIP C101,C500,C718 C-CERAMIC,CHIP

C148,C200 C-CERAMIC,CHIP

C138,C145,C146 C-CERAMIC,CHIP

C410,C416 C-CERAMIC,CHIP

TA500 C-TA,CHIP

C166 C-TA,CHIP

TA501 C-TA,CHIP

L100 INDUCTOR-SMD L104 INDUCTOR-SMD L207 INDUCTOR-SMD L215 INDUCTOR-SMD L205 INDUCTOR-SMD L702 INDUCTOR-SMD

L110,L111 INDUCTOR-SMD

C100,L120 INDUCTOR-SMD

L106,L115 INDUCTOR-SMD

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MAIN Electrical Parts List

SEC CODE Design LOG Discription

2703-002906 2703-002907 2703-002910 2703-002917 2703-002918 2703-002919 2703-002999 2703-003002 2703-003003 2703-003196 2703-003260 2703-003476 2703-003698 2801-004373 2801-004568 2809-001281 2809-001348 2901-001435 2901-001435 2901-001540 2904-001667 2904-001759 2909-001299 2910-000070 2910-000089 2911-000136 3003-001136 3301-001534 3301-001820 3301-001912 3301-001912 3301-001917 3705-001448 3705-001503 3711-005618 3711-005643 3711-005976 3711-006078 3711-006852 3711-007107 3722-002871

4302-001180 GH70-03349A SC400,SC407,SC409 IPR SHIELD-CAN CLIP GH70-03349A SC410,SC411,SC414 IPR SHIELD-CAN CLIP

L119,L121 INDUCTOR-SMD L101,L102 INDUCTOR-SMD

L503 INDUCTOR-SMD L105 INDUCTOR-SMD

L109,L122 INDUCTOR-SMD

L116 INDUCTOR-SMD

L108,L113 INDUCTOR-SMD

L107 INDUCTOR-SMD L114 INDUCTOR-SMD L601 INDUCTOR-SMD

L400,L401 INDUCTOR-SMD

L216 INDUCTOR-SMD

L203 INDUCTOR-SMD OSC400 CRYSTAL-UNIT OSC800 CRYSTAL-UNIT

TCX100 OSCILLATOR-VCTCXO TCX200 OSCILLATOR-VCTCXO

F700,F701,F702,F703 FILTER-EMI SMD

F704,F707 FILTER-EMI SMD F705,F706 FILTER-EMI SMD

F100 FILTER-SAW F200 FILTER-SAW

F201 FILTER-DUPLEXER DUF101 FILTER DUF100 FILTER

FEM100 FILTER

MIC500 MIC-CONDENSOR

L200,L201 CORE-FERRITE BEAD

L202,L212,L213 CORE-FERRITE BEAD

L500,L501,L502,L504 CORE-FERRITE BEAD

L700,L701 CORE-FERRITE BEAD

L602,L603,L604 CORE-FERRITE BEAD

RFC100 CONNECTOR-COAXIAL RFS100 CONNECTOR-COAXIAL

HDC700 CONNECTOR-HEADER HDC702 CONNECTOR-HEADER HDC800 CONNECTOR-HEADER

BTC600 CONNECTOR-HEADER

HDC701 CONNECTOR-HEADER HDC801 CONNECTOR-HEADER

IFC600 JACK-PHONE

BAT400 BATTERY

6-5

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MAIN Electrical Parts List

SEC CODE Design LOG Discription

GH70-03349A SC416,SC419,SC420 IPR SHIELD-CAN CLIP GH70-03349A SC421 IPR SHIELD-CAN CLIP GH71-08426A ANT201 NPR-CONTACT ANT GH71-08731A ANT200 NPR-CONTACT ANT

Please consuit the GSPN website( Samsung Portal) for the most recent version of the product's part list.

6-6

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Flow Chart of Troubleshooting

9.

Power On

9-1

Power On" does not work

"

Battery Voltage

Current consumption

100mA?

Check PMIC output voltage

C403

=1.2V,

C422

Check the oscillator clock

TCX100(C183)

OSC400(

=2.8V,

C413

=1.8V,

C409

=1.2V,

C423

R307)=32

≥

YES

=3.0V,

C421

=2.9V,

YES

=26

Khz,OK?

3.3V?

≥

C411

=3.0V,

OK?

Mhz

NO

,

Download again and check main key con.

NO

Change the Battery

Check the U400

check the TCX100, OSC400

YES

END

9-1

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Flow Chart of Troubleshooting

9-2

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9-2.

Sim Part

No SIM mode" is displayed on the LCD

"

Check the pad condition of SIM Card

Flow Chart of Troubleshooting

Check the SIM

connector's(SIM100)

connection to SIM card

YES

Check the voltage

C106

Is there any signals

pin#2,#3,#4 of SIM1

=3.0V,

END

OK?

YES

00?

YES

NO

Resolder or Replace SIM100

Check the U400

Check the UCP300

9-3

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Flow Chart of Troubleshooting

9-4

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Audio Part-Main&Sub MIC

9-3.

Phone MIC does not work

Flow Chart of Troubleshooting

Check the connection of

MIC(MIC100-normal,

MIC500-loud)

YES

Check the voltage

C527(MIC_BIAS)=

Check the components which

are connected to MIC_BIAS

R502,R503,R504,R506,R507)

(

Check the circuit

of MIC PATH

L3,L4,L500,L501,L503,L504,

(

C534,C535)

YES

2.2V,

OK?

NO

Resolder or Replace MIC(MIC100, MIC500)

Check the UCP300

Resolder R502,R503,R504,R506,R507

Resolder L3,L4,L500,L501,L503,L504,C534,C535

YES

END

9-5

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Flow Chart of Troubleshooting

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9-6

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Microphone Part-Earphone MIC

9-4.

Earphone MIC does not work

Flow Chart of Troubleshooting

Is the Headset O.K?

YES

Check the voltage at

C527(MIC_BIAS=

Check the components

which are connected to

EARMIC_BIAS(R500,R501

Check the circuit

of EARMIC

PATH(L502,C514,C517

2.2V)?

YES

NO

)

NO

)

Change the Headset

Check the UCP300

Resolder R500,R501

Check the Ear path

Check the voltage at

C609

(=1.1V)

YES

Check the IFC600

YES

END

NO

Check the U600

Replace IFC600

9-7

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Flow Chart of Troubleshooting

_

B

I

A

S

C

I

M

0

5

R

T

A

1

R

5

0

I

C

M

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E

A

9-8

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Earphone Part

9-5.

Flow Chart of Troubleshooting

Earphone is not work

Is the Headset O.K?

YES

Check the components

which are connected to

R508,R600,R601,C503,C504,

(

Earphone

L602,L603

Is there any signals at

C503,C504

Is there any signals at

L602,L603

)

YES

?

YES

?

YES

NO

Change the Headset

Resolder R508,R600,R601,C503,C504,L602,L603

Resolder or Replace U502

Resolder or Replace U600

Is there any signals at

Pin#1,#2 of IFC600

YES

Check the voltage at

C415

(=3.0V)

YES

END

?

NO

Resolder or Replace IFC600

Check the PM400

9-9

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Flow Chart of Troubleshooting

9-10

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Charging Part

9-6.

Flow Chart of Troubleshooting

Charging does not work

Check the Battery&TA

YES

Is the voltage of C602

YES

Is the voltage of C408

YES

Is charging working?

YES

END

?

5.0V?

NO

Reinsert the Battery&TA

Check the IFC600

Check the U600

Check the Q400 or Replace the PM400

9-11

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Flow Chart of Troubleshooting

9-12

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Speaker Part

9-7.

Flow Chart of Troubleshooting

Speaker does not work

Is the terminal of Speaker

Check the components which are connected to

Speaker(L1,L2,C503,C504

Is there any signals at

O.K

?

YES

Check the voltage at

C415

(=3.0V)

YES

C503,C504

?

YES

NO

)

NO

Replace the Speaker

Check the PM400

Resolder L1,L2,C503,C504

Resolder or Replace U502,UCP300

Is there any signals at

C817,C818

Is there any signals at

Pin#10,#11 of HDC800?

?

YES

END

NO

Resolder or Replace U600

Resolder or Replace HDC800

9-13

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Flow Chart of Troubleshooting

9-14

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