Samsung SGH-J750 User manual

UMTS TELEPHONE
SGH-J750
UMTS 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
11. Disassembly and Assembly
Instructions

This Service Manual is a property 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. 9. 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)

SAMSUNG Proprietary-Contents may change without notice
1. Safety Precautions
1-1
This Document can not be used without Samsung's authorization
1-1. Repair Precaution
―Repair in Shield Box, during detailed tuning.
Take specially care of tuning or test, because the specification 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.

SAMSUNG Proprietary-Contents may change without notice
Safety Precautions
1-2
This Document can not be used without Samsung's authorization
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.

SAMSUNG Proprietary-Contents may change without notice
2. Specification
This Document can not be used without Samsung's authorization
2-1
2-1. GSM General Specification
GSM900
Phase 1 EGSM 900 Phase 2 DCS1800 Phase 1 PCS1900 WCDMA 2100
Freq.
Band[MHz]
Uplink/Downlink
890~915
935~960 880~915 925~960 1710~1785 1805~1880 1850~1910 1930~1990 1922 ~ 1977 2112 ~ 2167
ARFCN range 1~124 0~124 &
975~1023 512~885 512~810 UL : 9612 ~ 9888
DL : 10562 ~ 10838
Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz 190MHz
Mod. Bit rate/
Bit Period 270.833kbps 3.692us 270.833kbps 3.692us 270.833kbps 3.692us 270.833kbps 3.692us 3.84Mcps
Time Slot
Period/Frame
Period
576.9us
4.615ms 576.9us 4.615ms 576.9us 4.615ms 576.9us 4.615ms Frame Length :10ms Slot length :0.667ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK QPSK
HQPSK
MS Power 33dBm~13d
Bm 33dBm~5dB m30dBm~0dB m30dBm~0dB m24dBm ~ -50 dBm
Power Class 5pcl ~
15pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl 3 (max + 24dBm)
Sensitivity -102dBm -102dBm -100dBm -100dBm -106.7 dBm
TDMA Mux 8 8 8 8
Cell Radius 35Km 35Km 2Km - 2Km

SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Specification
2-2
2-2. GSM TX power class
TX Power
control level GSM900
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±3dBm
18 7±3 dBm
19 5±3 dBm
TX Power
control level DCS1800
030±2dBm
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 PCS1900
030±2dBm
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

SAMSUNG Proprietary-Contents may change without notice
3. Product Function
3-1
This Document can not be used without Samsung's authorization
Main Function
―Mobile Instant Messaging
―Built-In Digital Camera with flash and Video Capture
―MP3 Player, and Java Games
―Hands-free speaker phone
―Bluetooth Wireless Technology
―Organizer feature provides Calendar, Alarms, Calculator, and Converter
―Multimedia Messaging Service-send and receive text messages with animation and sound
―Text Messaging Service-send and receive alphanumeric messages and Email
―Media Net Internet browsing
―Support 64 note polyphonic ringtones, MP3 ringtones, and AAC ringtones
―Tripple band(900/1800/1900MHz), WCDMA2100
―VGA Camera
―GPRS Class 10
―EGPRS Class E2

SAMSUNG Proprietary-Contents may change without notice
Product Function
3-2
This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice
4. Array course control
4-1
This Document can not be used without Samsung's authorization
4-1. Software Adjustments
1. JIG: Download, Trace, Calibration, etc [ 
2. RF test cable: RF test [ 
3. Test cable: JIG to phone [
4. TA (Travel Adaptor - S20pin ) [GH44-01702A]
5. Data Link Cable : USB cable (S20) [ GH39-00922A ]
6. Serial cable: PC to JIG
1

SAMSUNG Proprietary-Contents may change without notice
Array course control
4-2
This Document can not be used without Samsung's authorization
4-2. Software Downloading
-2-1. Downloading Binary Files
• Five binary files for downloading J750
– : Modem binary for communication function
& Mocha binary for user interface and various application
– : Dependent Parameter Set
– J750XAGF3.rc1: Files need for each application, Power on/off & Back charging animation
– : Default file system to be put into in initial production
4-2-2. Pre-requsite for Downloading
• Downloader Program(J750 Downloader V8.exe)
• SGH-J750 Mobile Phone
• USB Data Link Cable
• Binary files

SAMSUNG Proprietary-Contents may change without notice
Array course control
4-3
This Document can not be used without Samsung's authorization
4-2-3. S/W Downloader Program
1. Load the binary download program by executing the “J750 Downloader V8.exe"
and initially check Include "Calset Data" and "All Images Download to NOR + NAND"
2. Press the button "D/L Bootloader" and then check '"OK" for downloading Bootloader.

SAMSUNG Proprietary-Contents may change without notice
Array course control
4-4
This Document can not be used without Samsung's authorization
3. Select the binary file what you want to download
4. Now press the button 'START' and SGH-J750 connets with cable

SAMSUNG Proprietary-Contents may change without notice
Array course control
4-5
This Document can not be used without Samsung's authorization
5. When checking is completed, Press Nand Erase.
6. Now press the button 'Download'.

SAMSUNG Proprietary-Contents may change without notice
5. Exploded View and Parts List
5-1
This Document can not be used without Samsung's authorization
5-1. Cellular phone Exploded View
QFU01
QKP01
QMP01
QME01
QMI01
QCK01
QAN02
QMP02
QPC01
QME02
QSH01
QMO01
QCR58
QVO01
QBT02
QRE01
QBA01
QCR05
QBA00
QKP02
QSP01
QCA01
QLC01
QCR05
QSC05
QFR00
QCA02
QFL01
QHI01
QIF01
QSD01
QFR01

SAMSUNG Proprietary-Contents may change without notice
Exploded View and Parts List
5-2
This Document can not be used without Samsung's authorization
Design LOC Description SEC CODE
QAN02 INTENNA-SGHJ750 GH42-01284A
QBA00 ASSY COVER-BATTERY GH98-06709A
QBA01 INNER BATTERY PACK-880MAH , BL GH43-02772A
QBT02 ASSY RUBBER-BT CAP GH98-05345A
QCA01 CAMERA MODULE-1.3MEGA GH59-04621A
QCA02 CAMERA MODULE-QCIF GH59-04622A
QCK01 PMO KEY-CAMEARA GH72-42448A
QCR05 SCREW-MACHINE 6001-001478
QCR05 SCREW-MACHINE 6001-001478
QCR58 SCREW-MACHINE 6001-001870
QFU01 ASSY CASE-SLIDE UPPER GH98-05283A
QKP01 ASSY KEYPAD-MAIN(OPEN/BLK) GH98-05285A
QKP02 ASSY KEYPAD-SUB(OPEN/BLK) GH98-05286A
QLC01 MEA-LCD MODULE KIT(J750) GH97-08112A
QME01 DOME SHEET-DOME SHEET 12KEY GH59-04659A
QME02 DOME SHEET-DOME SHEET SUB 10 K GH59-04660A
QMI01 MICROPHONE-ASSY GH30-00393A
QMO01 MOTOR DC GH31-00088A
QMP01 PBA MAIN-SGHJ750 GH92-03930A
QMP02 PBA SUB-SGHJ750 GH92-03870A
QPC01 MEA-SLIDER FPCB KIT(J750) GH97-08113A
QSC05 TAPE-COVER SCREW LOWER L GH74-32974A
QSH01 ASSY BRACKET-SHIELD CAN GH98-05287A
QSP01 MICRO SPEAKER 3001-002190
QVO01 PMO KEY-VOLUME GH72-42447A
QFR00 ASSY CASE-FRONT/SLIDE LOWER GH98-06674A
QFR01 ASSY CASE-FRONT GH98-05281A
QFL01 ASSY CASE-SLIDE LOWER GH98-05282A
QHI01 ASSY HINGE-MULTI TORSION SPRIN GH98-05822A
QRE01 ASSY CASE-REAR GH98-05284A
QIF01 PMO COVER-IF GH72-42445A
QSD01 PMO COVER-MICRO SD GH72-42446A
5-2. Cellular phone Parts List

SAMSUNG Proprietary-Contents may change without notice
Exploded View and Parts List
5-3
This Document can not be used without Samsung's authorization
Description SEC CODE
BAG PE 6902-000634
ADAPTOR-ATADS10EBE,BLK,EU GH44-01702A
S/W CD-SGH-J750 SAMSUNG PC STU GH46-00498A
EARPHONE GH59-04556A
LABEL(P)-UNIT SEAL GH68-00518B
LABEL(P)-UNIT SOUTH AFRICA GH68-01335J
MANUAL USERS-EU ENGLISH GH68-15740A
LABEL(R)-MAIN(XFA) GH68-15752A
BOX-UNIT(EU) GH69-05765A
CUSHION-CASE(EU) GH69-05766A
RMO RUBBER-PCB GH73-10871A
TAPE INSU GH74-23930A
TAPE INSU GH74-34610A
TAPE INSU GH74-34611A
TAPE INSU GH74-34612A
TAPE GASK GH74-34613A
TAPE GASK-LCD LOWER 2 GH74-34670A
TAPE GASK-PCB CONN GH74-34671A
TAPE ELEC-PCB LCD 1 GH74-34775A
TAPE ELEC-PCB LCD 2 GH74-34776A
TAPE GASK-LCD LOWER 1 GH74-34777A
VINYL-BOHO REAR GH74-35375A
TAPE INSU-SUB PCB GH74-35446A
TAPE-COVER RF GH74-35492A
VINYL-BOHO UPPER MAIN GH74-35608A

SAMSUNG Proprietary-Contents may change without notice
Exploded View and Parts List
5-4
This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice
6. MAIN Electrical Parts List
6-1
This Document can not be used without Samsung's authorization
Design LOC Description SEC Code STATUS
ANT301 ANTENNA-CHIP 4202-001333 SA
BAT400 BATTERY-LI(2ND) 4302-001181 SA
BTC800 HEADER-BATTERY 3711-006249 SA
C10 C-CER,CHIP 2203-006399 SA
C100 C-CER,CHIP 2203-006562 SA
C101 C-CER,CHIP 2203-005682 SA
C102 C-CER,CHIP 2203-002677 SA
C103 C-CER,CHIP 2203-005682 SA
C11 C-CER,CHIP 2203-006048 SA
C11 C-CER,CHIP 2203-006399 SA
C111 C-CER,CHIP 2203-005682 SA
C112 C-CER,CHIP 2203-005682 SA
C113 C-CER,CHIP 2203-005736 SA
C116 C-CER,CHIP 2203-000812 SA
C117 C-CER,CHIP 2203-000330 SA
C118 C-CER,CHIP 2203-000330 SA
C12 C-CER,CHIP 2203-006423 SA
C12 C-CER,CHIP 2203-006824 SA
C120 C-CER,CHIP 2203-000438 SA
C121 C-CER,CHIP 2203-000438 SA
C122 C-CER,CHIP 2203-005736 SA
C127 C-CER,CHIP 2203-000438 SA
C128 C-CER,CHIP 2203-000438 SA
C129 C-CER,CHIP 2203-001153 SA
C13 C-CER,CHIP 2203-006048 SA
C130 C-CER,CHIP 2203-000812 SA
C131 C-CER,CHIP 2203-000812 SA
C132 C-CER,CHIP 2203-006399 SA
C14 C-CER,CHIP 2203-006562 SA
C15 C-CER,CHIP 2203-006048 SA
C16 C-CER,CHIP 2203-006423 SA
C17 C-CER,CHIP 2203-006399 SA
C18 C-CER,CHIP 2203-006399 SA
C2 C-CER,CHIP 2203-006562 SA
C200 C-CER,CHIP 2203-006423 SA
C201 C-CER,CHIP 2203-006423 SA
C202 C-CER,CHIP 2203-000254 SA
C203 C-CER,CHIP 2203-005682 SA
C204 C-CER,CHIP 2203-006423 SA
C206 C-CER,CHIP 2203-006423 SA
C207 C-CER,CHIP 2203-005053 SA
C208 C-CER,CHIP 2203-005053 SA
C21 C-CER,CHIP 2203-006399 SA
C210 C-CER,CHIP 2203-005682 SA
C211 C-CER,CHIP 2203-006423 SA
C212 C-CER,CHIP 2203-006423 SA
C214 C-CER,CHIP 2203-006979 SA
C215 C-CER,CHIP 2203-006423 SA
C219 C-CER,CHIP 2203-006305 SA
C22 C-CER,CHIP 2203-006399 SA
C220 C-CER,CHIP 2203-006399 SA
C221 C-CER,CHIP 2203-006423 SA
C222 C-CER,CHIP 2203-000254 SA

SAMSUNG Proprietary-Contents may change without notice
Main Electrical Parts List
6-2
This Document can not be used without Samsung's authorization
Design LOC Description SEC Code STATUS
C224 C-CER,CHIP 2203-006305 SA
C225 C-CER,CHIP 2203-006399 SA
C226 C-CER,CHIP 2203-005552 SA
C228 C-CER,CHIP 2203-006260 SA
C229 C-CER,CHIP 2203-005552 SA
C230 C-CER,CHIP 2203-006305 SA
C232 C-CER,CHIP 2203-005054 SA
C233 C-CER,CHIP 2203-000254 SA
C234 C-CER,CHIP 2203-005054 SA
C236 C-CER,CHIP 2203-000254 SA
C237 C-CER,CHIP 2203-005288 SA
C239 C-CER,CHIP 2203-005288 SA
C240 C-CER,CHIP 2203-000254 SA
C241 C-CER,CHIP 2203-000812 SA
C244 C-CER,CHIP 2203-000330 SA
C245 C-CER,CHIP 2203-000438 SA
C246 C-CER,CHIP 2203-005682 SA
C247 C-CER,CHIP 2203-005682 SA
C248 C-CER,CHIP 2203-005682 SA
C249 C-CER,CHIP 2203-000254 SA
C3 C-CER,CHIP 2203-006562 SA
C310 C-CER,CHIP 2203-005158 SA
C311 C-CER,CHIP 2203-005158 SA
C312 C-CER,CHIP 2203-001383 SA
C313 C-CER,CHIP 2203-000995 SA
C317 C-CER,CHIP 2203-006872 SA
C319 C-CER,CHIP 2203-000995 SA
C320 C-CER,CHIP 2203-000278 SA
C334 C-CER,CHIP 2203-000233 SA
C335 C-CER,CHIP 2203-006048 SA
C336 C-CER,CHIP 2203-005444 SA
C337 C-CER,CHIP 2203-006121 SA
C338 C-CER,CHIP 2203-006121 SA
C348 C-CER,CHIP 2203-006872 SA
C349 C-CER,CHIP 2203-005552 SA
C350 C-CER,CHIP 2203-000995 SA
C352 C-CER,CHIP 2203-001383 SA
C353 C-CER,CHIP 2203-005736 SA
C356 C-CER,CHIP 2203-005736 SA
C357 C-CER,CHIP 2203-006681 SA
C358 C-CER,CHIP 2203-000995 SA
C360 C-CER,CHIP 2203-006872 SA
C361 C-CER,CHIP 2203-000438 SA
C362 C-CER,CHIP 2203-006048 SA
C365 C-CER,CHIP 2203-000233 SA
C366 C-CER,CHIP 2203-000940 SA
C4 C-CER,CHIP 2203-006562 SA
C400 C-CER,CHIP 2203-006824 SA
C401 C-CER,CHIP 2203-006399 SA
C403 C-CER,CHIP 2203-006562 SA
C404 C-CER,CHIP 2203-006399 SA
C405 C-CER,CHIP 2203-006399 SA
C406 C-CER,CHIP 2203-006399 SA

SAMSUNG Proprietary-Contents may change without notice
Main Electrical Parts List
6-3
This Document can not be used without Samsung's authorization
Design LOC Description SEC Code STATUS
C407 C-CER,CHIP 2203-006824 SA
C408 C-CER,CHIP 2203-006399 SA
C409 C-CER,CHIP 2203-006194 SA
C410 C-CER,CHIP 2203-006824 SA
C411 C-CER,CHIP 2203-006872 SA
C412 C-CER,CHIP 2203-006824 SA
C413 C-CER,CHIP 2203-006361 SA
C414 C-CER,CHIP 2203-006399 SA
C415 C-CER,CHIP 2203-001017 SA
C416 C-CER,CHIP 2203-006562 SA
C417 C-CER,CHIP 2203-006399 SA
C418 C-CER,CHIP 2203-001017 SA
C419 C-CER,CHIP 2203-006361 SA
C420 C-CER,CHIP 2203-006399 SA
C421 C-CER,CHIP 2203-000233 SA
C423 C-CER,CHIP 2203-006562 SA
C424 C-CER,CHIP 2203-006399 SA
C425 C-CER,CHIP 2203-006872 SA
C426 C-CER,CHIP 2203-006824 SA
C427 C-CER,CHIP 2203-006872 SA
C428 C-CER,CHIP 2203-006399 SA
C429 C-CER,CHIP 2203-006824 SA
C430 C-CER,CHIP 2203-006824 SA
C431 C-CER,CHIP 2203-006348 SA
C432 C-CER,CHIP 2203-006399 SA
C433 C-CER,CHIP 2203-006824 SA
C434 C-CER,CHIP 2203-006562 SA
C435 C-CER,CHIP 2203-006824 SA
C436 C-CER,CHIP 2203-006399 SA
C437 C-CER,CHIP 2203-006399 SA
C5 C-CER,CHIP 2203-006562 SA
C500 C-CER,CHIP 2203-006872 SA
C501 C-CER,CHIP 2203-006423 SA
C502 C-CER,CHIP 2203-006423 SA
C503 C-CER,CHIP 2203-006423 SA
C504 C-CER,CHIP 2203-006423 SA
C505 C-CER,CHIP 2203-006872 SA
C506 C-CER,CHIP 2203-006423 SA
C507 C-CER,CHIP 2203-006423 SA
C508 C-CER,CHIP 2203-006399 SA
C509 C-CER,CHIP 2203-006399 SA
C510 C-CER,CHIP 2203-006423 SA
C511 C-CER,CHIP 2203-006399 SA
C512 C-CER,CHIP 2203-006626 SA
C513 C-CER,CHIP 2203-006423 SA
C514 C-CER,CHIP 2203-000812 SA
C515 C-CER,CHIP 2203-000812 SA
C516 C-CER,CHIP 2203-000812 SA
C517 C-CER,CHIP 2203-006423 SA
C518 C-CER,CHIP 2203-006423 SA
C519 C-CER,CHIP 2203-006399 SA
C520 C-CER,CHIP 2203-006423 SA
C521 C-CER,CHIP 2203-006194 SA