Samsung SGH-G400 User manual

GSM TELEPHONE
SGH-G400
GSM 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
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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.
2008. 07. 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)

2. Specification
2-1
2-1. GSM General Specification
EGSM 900 DCS 1800 PCS 1900 WCDMA2100
Freq.
Band[MHz]
Uplink/Downlink
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
1920~1980
2110~2170
ARFCN range 0~124 &
975~1023 512~885 512~810 UL:9612~9888 DL:10562~10838
Tx/Rx spacing 45MHz 95MHz 80MHz 190MHz
Mod. Bit rate/
Bit Period
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
Frame length : 10ms
Slot length: 0.667ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK QPSK
HQPSK
MS Power 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm 24dBm~ -50dBm
Power Class 4
(max +33dBm)
1
(max +30dBm)
1
(max +30dBm)
3
(max +24dBm)
Sensitivity -102dBm -100dBm -100dBm -106.7dBm
TDMA Mux 8 8 8 NA
Cell Radius 35Km 2Km 2Km 2Km

Speclflcation
2-2
TX Power
control level GSM900
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±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
TX Power
control level PCS1800
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±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
2-2. GSM Tx Power Class

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3. Product Function
3-1
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Main Function
▪Extended GSM 900MHz &DCS1800MHz &PCS1900MHz
&WCDMA/HSDPA2100MHz Quad Band
▪HSDPA 7.2Mbps
▪GPRS Multi-slot Class 12
▪5Megapixel AF Camera
▪240x320,262K TFT LCD 2.22” (DUAL LCD)
▪Music Library, FM Radio with RDS
▪Video Playback &Recording
▪USB 2.0, BT 2.0
▪Downloadable Game via JAVA
▪72 Poly, CMX
▪Sending Photo &Video by MMS or E-Mail
▪880 mAh Battery

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10. Reference data
10-1
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Reference Abbreviation
-AAC:Advanced Audio Coding.
-AVC :Advanced Video Coding.
-BER :Bit Error Rate
-BPSK:Binary Phase Shift Keying
-CA :Conditional Access
-CDM :Code Division Multiplexing
-C/I :Carrier to Interference
-DMB :Digital Multimedia Broadcasting
-EN :European Standard
-ES :Elementary Stream
-ETSI:European Telecommunications Standards Institute
-MPEG:Moving Picture Experts Group
-PN :Pseudo-random Noise
-PS :Pilot Symbol
-QPSK:Quadrature Phase Shift Keying
-RS :Reed-Solomon
-SI :Service Information
-TDM :Time Division Multiplexing
-TS :Transport Stream

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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 specificity of cellular phone is sensitive for
surrounding interference(RF noise).
●Be careful to use akind of magnetic object or tool, because performance of parts is
damaged by the influence of magnetic force.
●Surely use astandard screwdriver when you disassemble this product, otherwise screw will
be worn away.
●Use athicken twisted wire when you measure level.
Athicken 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 arepair 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 acircuit board.

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4. Array course control
4-1
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4-1. Software Adjustments
1. JIG(GH80-03308A): Download, Trace, Calibration, etc
2. 0.4M Test cable(GH39-00990A): JIG to phone
3. 1.5M Test cable(GH39-00993A): JIG to phone

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Array course control
4-2
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4.Travel Adaptor(GH44-01702A)
5.Data Link Cable(GH39-00922A): USB cable
6.Serial cable(LJ39-00013A) :PC to JIG

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Array course control
4-3
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7. RF test cable(GH39-00985A): RF test

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Array course control
4-4
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4-2. Software Downloading
4-2-1. Downloading Binary Files
•Four binary files for downloading G400
–amss_compressed.bin :Modem binary for communication function and
user interface and various application
–Rsrc_G400_Open_Europe_Common.rc1 :Files need for each application
–Rsrc2_G400(Low).rc2 :Power on/off animation
–FactoryFs_G400_Open_Europe_Common.ffs :
Default file system to be put into in initial production
4-2-2. Pre-requsite for Downloading
•Downloader Program (MultiLoader V5.40.exe)
•SGH-G400 Mobile Phone
•USB Data Link Cable
•Binary files

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Array course control
4-5
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4-2-3. S/W Downloader Program
1. Boot the G400 by pressing 'power ON' +'
number 9' at the same time.
If you do properly, you can see the following message on Main LCD "Download"
2. Load the binary download program by executing the "MultiLoader V5.40.exe".
And the Check the MSM6275/MSM6280

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Array course control
4-6
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3. Select the binary file what you want to download and drag all

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Array course control
4-7
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4. Select the check box what you want to download.
*Up to eight ports are supported.

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Array course control
4-8
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5. Now press the button 'DownLoad'.
6. When downloading is complete, UE reboot automatically.
-If there is difference in FactoryFS.bin, UE will format file system automatically.

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5. Exploded View and Parts List
5-1
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5-1. Cellular phone Exploded View
QFU01
QWD01
QAN03
QSH01
QCR12
QSH02
QME03
QPC01
QCA01
QCR12
QFL01
QCR12
QSC05
QMW02
QFR01
QKP01
QME01
QBR01
QAN02
QCB01
QRE01
QCR06
QBA00
QMP01
QVO01
QCK01
QCK02
QSP01
QCA02
QMO01
QLC01
QIF01
QFU02
QSD01
QHI01
QCR12
QCR54

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Main Electrical Parts List
5-2
This Document can not be used without Samsung's authorization
Design LOC Discription SEC CODE
QAN02 INTENNA-SGH_G400 GH42-01563A
QAN03 INTENNA-BT SGH_G400 GH42-01640A
QBA00 ASSY COVER-BATTERY GH98-07930A
QBA01 INNER BATTERY PACK-880MAH,BLK, GH43-02934A
QBR01 ICT BRACKET-KEY V2 GH70-04083A
QCA01 CAMERA MODULE-SGHG400(5M) GH59-05666A
QCA02 CAMERA MODULE-SGHG400(CIF) GH59-05665A
QCB01 CBF COAXIAL CABLE-SGH_G400 GH39-01134A
QCK01 PMO KEY-CAMERA GH72-47009A
QCK02 PMO KEY-HOLD GH72-47010A
QCR06 SCREW-MACHINE 6001-001155
QCR12 SCREW-MACHINE 6001-001530
QKP01 ASSY KEYPAD-(OPEN/SILVER) GH98-09406A
QLC01 LCD-M/S LCD MODULE GH07-01280A
QME01 KEY FPCB-MAIN KEY PBA(G400) GH59-05719A
QME03 UNIT-TOUCH SCREEN(SGHG400) GH59-05977A
QMO01 MOTOR DC-SGH_G400 GH31-00446A
QMP01 PBA MAIN-SGHG400 GH92-04441A
QMW02 PCT WINDOW-MAIN GH72-47025A
QPC01 FPC-CON TO CON(G400) GH41-02250A
QRE01 ASSY CASE-REAR GH98-07931A
QRF01 TAPE-RF HOLE COVER GH74-39434A
QSC05 TAPE-SCREW CAP GH74-39436A
QSH01 ICT COVER-SHIELD CAN TOP GH70-03537A
QSH02 ICT COVER-SHIELD CAN BOTTOM GH70-03538A
QSP01 SPEAKER 3001-002363
QVO01 PMO KEY-VOLUME GH72-47011A
QWD01 PCT WINDOW-SUB GH72-47026A
QFL01 ASSY CASE-FOLDER LOWER GH98-07926A
QHI01 ASSY HINGE-FOLDER GH98-09696A
QFR01 ASSY CASE-FRONT GH98-07927A
QCR12 SCREW-MACHINE 6001-001530
QCR54 SCREW-MACHINE 6001-001645
QIF01 PMO COVER-IF GH72-47021A
QSD01 PMO COVER-SD GH72-47022A
QFU01 ASSY CASE-FOLDER UPPER GH98-09478A
QFU02 ASSY DECO-UPPER LOGO GH98-08814A
5-2. Cellular phone Parts list

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6. MAIN Electrical Parts List
6-1
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SEC CODE Design LOC Discription
0403-001547 ZD610 DIODE-ZENER
0404-001250 D301 DIODE-SCHOTTKY
0404-001250 D302 DIODE-SCHOTTKY
0404-001361 D402 DIODE-SCHOTTKY
0406-001208 ZD606 DIODE-TVS
0406-001208 ZD611 DIODE-TVS
0406-001237 ZD603 DIODE-TVS
0406-001237 ZD605 DIODE-TVS
0406-001254 ZD601 DIODE-TVS
0406-001254 ZD602 DIODE-TVS
0406-001267 D601 DIODE-TVS
0406-001267 ZD608 DIODE-TVS
0406-001267 ZD609 DIODE-TVS
0406-001281 ZD501 DIODE-TVS
0406-001281 ZD502 DIODE-TVS
0407-001002 D401 DIODE-ARRAY
0504-000168 TR401 TR-DIGITAL
0504-001151 U202 TR-DIGITAL
0505-001953 U407 FET-SILICON
0505-002345 U404 FET-SILICON
1001-001336 U503 IC-ANALOG SWITCH
1003-002047 U505 IC-MOTOR DRIVER
1108-000143 UME301 IC-MCP
1201-002007 U502 IC-AUDIO AMP
1201-002195 U504 IC-AUDIO AMP
1201-002461 U203 IC-POWER AMP
1201-002570 MOD101 IC-POWER AMP
1203-004395 U405 IC-POSI.FIXED REG.
1203-004682 U406 IC-MULTI REG.
1203-004727 U402 IC-DC/DC CONVERTER
1203-004778 U401 IC-POWER SUPERVISOR
1203-004983 U501 IC-DC/DC CONVERTER
1205-003341 U101 IC-TRANSCEIVER
1205-003360 UCP301 IC-MODEM
1209-001712 U301 IC-SENSOR
2007-000137 R320 R-CHIP

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Main Electrical Parts List
6-2
This Document can not be used without Samsung's authorization
SEC CODE Design LOC Discription
2007-000138 R109 R-CHIP
2007-000138 R315 R-CHIP
2007-000138 R602 R-CHIP
2007-000141 R114 R-CHIP
2007-000141 R301 R-CHIP
2007-000141 R302 R-CHIP
2007-000141 R330 R-CHIP
2007-000141 R331 R-CHIP
2007-000141 R502 R-CHIP
2007-000143 R617 R-CHIP
2007-000145 R503 R-CHIP
2007-000146 R410 R-CHIP
2007-000148 R407 R-CHIP
2007-000148 R416 R-CHIP
2007-000148 R417 R-CHIP
2007-000148 R521 R-CHIP
2007-000148 R606 R-CHIP
2007-000148 R607 R-CHIP
2007-000148 R608 R-CHIP
2007-000148 R609 R-CHIP
2007-000148 R610 R-CHIP
2007-000148 R611 R-CHIP
2007-000157 R507 R-CHIP
2007-000159 R411 R-CHIP
2007-000162 R333 R-CHIP
2007-000162 R402 R-CHIP
2007-000162 R413 R-CHIP
2007-000162 R414 R-CHIP
2007-000162 R605 R-CHIP
2007-000165 R408 R-CHIP
2007-000170 R310 R-CHIP
2007-000171 R102 R-CHIP
2007-000171 R208 R-CHIP
2007-000171 R213 R-CHIP
2007-000171 R216 R-CHIP
2007-000171 R217 R-CHIP