Samsung SGH-E740S User manual

GSM TELEPHONE
SGH-E740S
GSM TELEPHONE CONTENTS
1. Safety Precautions
2. Specification
3. Product Function
4. Array course control
5. Exploded View/Disassembly
and Assembly Instructions
6. MAIN Electrical Parts List
7. Block Diagrams
8. PCB Diagrams
9. Flow Chart of Troubleshooting
10. Reference data

Samsung Electronics Co.,Ltd.
2007. 07 Rev.1.0
ⓒ
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.
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.
―Background color for Navi-keys and 3*4 key pad of silver-colouredmoldis'silver'.Duetoits
background color, white LED causes problems in daytime discrimination and brightness uniformity.
By applying Sky-blue LED, advantages both in discrimination and design can be satisfied.
―   
  Print "BLUE LED" on the backside
   Stamp "BLUE LED" on the frontside (see picture attached)
―Colours of SGH-E740(Total of 8): Metal silver, Black dynamic, Light pink, Blue, Hot pink,
Blue green, Yellow green, Emerald green.
―Among above eight, only Metal silver needs Sky-blue LED, while the rest stay with White LED

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

SAMSUNG Proprietary-Contents may change without notice
Safety Precautions
1-3
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
Safety Precautions
1-4
This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice
2. Specification
This Document can not be used without Samsung's authorization
2-1
GSM 900
Phase 1 EGSM 900 Phase 2 DCS1800 Phase 1 PCS1900
Freq. Band[MHz]
Uplink/Downlink 890~915 935~960 880~915 925~960 1710~1785 1805~1880 1850~1910 1930~1990
ARFCN range 1~124 0~124 &
975~1023 512~885 512~810
Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz
Mod. Bit rate/
Bit Period 270.833kbps 3.692us 270.833kbps 3.692us 270.833kbps 3.692us 270.833kbps 3.692us
Time Slot
Period/Frame Period 576.9us 4.615ms 576.9us 4.615ms 576.9us 4.615ms 576.9us 4.615ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power Class 4
(max +33dBm) 4 (max +33dBm) 1 (max +30dBm) 1 (max +30dBm)
Sensitivity -102dBm -102dBm -100dBm -100dBm
TDMA Mux 8 8 8 8
Cell Radius 35Km 35Km 2Km 2Km
2-1. GSM General Specification

SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Specification
2-2
TX Power
control level PCS1900
030±3dBm
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 GSM900
533±2dBm
631±2dBm
729±2dBm
827±2dBm
925±2dBm
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
0 30±3 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±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

SAMSUNG Proprietary-Contents may change without notice
3. Operation Instruction and Installation
3-1
This Document can not be used without Samsung's authorization
Main Function
―Video recording & Messaging
―Mobile Tracker, My Menu, Living world
―Built-In 2 Mega-Fixel Digital Camera
―MP3 Player(Music Library) and Java Games
―MP3, AAC+, MP4, 3GPP Decoding(Off-line mode)
―WMDRM(Windows Media DRM 10 for Portable Devices)
―MTP(Media Transfer Protocol): Easy & Fast PC sync
―Hands-free speaker phone function
―Bluetooth v.2.0 + EDR / USB v.2.0(B/T Headset)
―FM Radio (FM radio recording: MP3 format support)
―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(Madwave)
―Tri-Band(900/1800/1900) EDGE Support
―WAP 2.0 / Java MIDP 2.0
―Extended Memory (microSD slot)
―Black GUI / UI

SAMSUNG Proprietary-Contents may change without notice
Operation Instruction and Installation
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
Power Supply Cable
Serial Cable(CSA LL64151-A)
Test Jig (GH80-03306A) Test Cable (GH39-00499A)
Data Cable

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
4-2-1. Pre-requsite for Downloading
• Downloader Program(OneNAND Downloader v1.3 For PNX5230(tfs4 v1.6).exe)
• E740 Mobile Phone
• Data Cable
• Binary file, TFS file
4-2-2. S/W Downloader Program
■Load the binary download program by executing the
“OneNAND Downloader v1.3 For PNX5230(tfs4 v1.6).exe”
1. Select the connected serial port and the rate of speed
2. Select the check box, the mode you want to download.
- if the binary file wanted, check only 'BIN'
- if the tfs file wanted, check only 'TFS'
- if all the files wanted, check 'BIN+TFS'
1
2

SAMSUNG Proprietary-Contents may change without notice
Array course control
4-3
This Document can not be used without Samsung's authorization
3. Select the file(s) what you want to download

SAMSUNG Proprietary-Contents may change without notice
Array course control
4-4
This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice
5. Exploded View/Disassembly&Assembly Instructions
5-4
This Document can not be used without Samsung's authorization
5-1. Cellular phone Exploded View
QFU01
QMO01
QSP01
QKP02
QFR01
QCR57
QKP01
QME01
QSH01
QAN02
QCR72
QRE01
QRE04
QCR72
QCR72
QCR67
QSD01
QIF01
QCK01
QVO01
QBA01
QBA00
QMP01
QME16
QLC01
QCR58
QCA01
QFL01
QCR72
QSC01
QSC02
QRF12
QMI03
QMI01
QHI02
QMW02
QFU04
QCR47
QME02

SAMSUNG Proprietary-Contents may change without notice
Exploded View/Disassembly&Assembly Instructions
5-2
This Document can not be used without Samsung's authorization
Design LOC Description SEC CODE
QAN02 INTENNA-SGH E740 GH42-01139A
QBA00 PMO-COVER BATTERY V2 GH72-37897A
QBA01 INNER BATTERY PACK-880MAH , BL GH43-02772A
QCA01 CAMERA MODULE GH59-04088A
QCK01 PMO-CAMERA KEY V3 GH72-39445A
QCR47 SCREW-MACHINE 6001-001695
QCR57 SCREW-MACHINE 6001-002001
QCR58 SCREW-MACHINE 6001-001870
QCR67 SCREW-MACHINE 6001-002083
QCR72 SCREW-MACHINE 6001-002051
QCR72 SCREW-MACHINE 6001-002051
QFL01 ASSY CASE-SLIDE LOWER GH98-03666A
QFR01 ASSY CASE-FRONT GH98-03668A
QFU01 ASSY CASE-UPPER DECO GH98-05929A
QFU04 NDC-DECO UPPER V2 GH71-07423A
QHI02 ASSY HINGE-ACTUATOR BODY GH98-04898A
QIF01 PMO-COVER IF V3 GH72-39152A
QKP01 ASSY KEYPAD-MAIN(TEC/SIL) GH98-05021A
QKP02 ASSY KEYPAD-(EU/SIL) GH98-03671A
QLC01 ELA ETC-SGHE740 LCD MODULE(M/S GH96-02637B
QME01 KEY FPCB-MAIN KEY PBA(S/BLU) GH59-04751A
QME02 DOME SHEET-DOME SHEET 10KEY(SU GH59-04291A
QME16 MEA-SLIDER FPCB KIT(E740) GH97-07815A
QMI01 AS-MIC SVC GH81-05445A
QMI03 AS-SCHF679 MIC RUBBER GH81-06599A
QMO01 MOTOR DC-SGH E740 GH31-00306A
QMP01 PBA MAIN-SGHE740S GH92-03648A
QMW02 PCT-COVER MAIN WINDOW GH72-37012A
QRE01 ASSY CASE-REAR GH98-03669A
QRE04 PMO-DECO REAR V2 GH72-37898A
QRF12 ASSY ACCE-EARPHONE CASE GH98-05770A
QSC01 RMO RUBBER-SCREW CAP L GH73-09822A
QSC02 RMO RUBBER-SCREW CAP R GH73-09823A
QSD01 PMO-COVER MICRO SD V2 GH72-37902A
QSH01 ASSY BRACKET-SHIELD CAN GH98-04897A
QSP01 SPEAKER 3001-002120
QVO01 PMO-VOLUME KEY V3 GH72-39444A
5-2. Cellular phone Parts list

SAMSUNG Proprietary-Contents may change without notice
Exploded View/Disassembly&Assembly Instructions
5-3
This Document can not be used without Samsung's authorization
Description SEC CODE
CBF INTERFACE-DLC,X830,SIL,PCB GH39-00720B
ADAPTOR-SGHE690,SIL,UK,A_TYPE GH44-01362B
LABEL(R)-WATER SOAK GH68-09361A
AS-SGHE740 CAMERA TAPE GH81-06677A
VINYL-BOHO WHEEL TOP GH74-33987A
TAPE INSU GH74-33431A
MPR-ELEC TAPE GH74-19116A
TAPE GASK GH74-24020A
TAPE INSU GH74-32907A
TAPE ELEC-LCD MODULE GH74-33381A
TAPE INSU-KEY FPCB L GH74-33780A
TAPE INSU-KEY FPCB R GH74-33781A
BAG PE 6902-000634
LABEL(P)-IMEI GH68-01335D
LABEL(R)-MAIN(EU) GH68-14766A
BOX-UNIT(SEA) GH69-05392C
CUSHION-CASE(UK/XSA_NEW) GH69-05654A
IC-MEMORY CARD 1109-001352
BAG ZIPPER 6902-000683
S/W CD-SGHE740 PC LINK CD GH46-00452A
MANUAL USERS-SEA ENGLISH GH68-15060A
CONNECTOR-ADAPTOR 3719-001319
VINYL-BOHO MAIN WINDOW 2 GH74-33552A
EARPHONE-AAEP452SSE,M20,SIL,EU GH59-04781A

SAMSUNG Proprietary-Contents may change without notice
Exploded View/Disassembly&Assembly Instructions
5-4
This Document can not be used without Samsung's authorization
1) Take care of not scratching on the rear cover.
2) Use a disassembly tool.
1) Take care of not scratching on the rear.
2) Use a cruciform screwdriver.
1) Take care of not scratching on the rear and the
front.
2) Use a disassembly tool.
1) Use a cruciform screwdriver.
5-3. Disassembly and Assembly Instructions
5-3-1. Disassembly
1) Open the earjack cover downward.
2) Undo a hook beside earjack cover with a
disassembly tool and disassemble the rear
cover in the direction which the arrow
points to.
11) Unscrew 6 rear screws. 2
13 4
1) Undo a hook in the middle of rear with a
disassembly tool and disassemble the rear
in the direction which the arrow points to.
1) Unscrew the screw at the bottom of PBA.
2) Pull out the key FPCB connector at the
top of PBA.
Unscrew a screw.
Pull out the connector.
1) Unscrew
screws.

SAMSUNG Proprietary-Contents may change without notice
Exploded View/Disassembly&Assembly Instructions
5-5
This Document can not be used without Samsung's authorization
1) Be aware of not damaging on FPCB. 1) Be aware of not damaging on camera key and volume
key FPCBs.
1) Take care of not scratching on the front.
2) Use a cruciform screwdriver.
1) Take care of not scratching on the slide lower.
2) Use a cruciform screwdriver.
3) When you remove screw caps, use tweezers.
1) Pull out the LCD connector raising a PBA
by your own hand.
51) Take off volume key FPCB and camera key
FPCB outward from the front.
2) Take off a shield can from the front.
6
Pull out the connector
Unscrew
screws.
1) Remove screw
caps.
2) Unscrew screws.
1) Unscrew screws.
1) Unscrew 4 front screws.
71) Remove 2 screw caps at the top of the
slide lower with tweezers.
2) Unscrew 4 slide lower screws.
8

SAMSUNG Proprietary-Contents may change without notice
Exploded View/Disassembly&Assembly Instructions
5-6
This Document can not be used without Samsung's authorization
1) Take care of not scratching on the slide upper and
lower.
2) Use a disassembly tool.
1) Pay special attention to not scratching on FPCB
and damaging on nearby components.
1) Be careful of not scratching on LCD.
2) Be aware of dust inside the main window of slide
upper.
1) Pay special attention to surrounding
components when using a soldering iron.
2) Use a cruciform screwdriver.
1) Undo a hook at the bottom of slide lower
with a disassembly tool and disassemble the
rear in the direction which the arrow points
to.
91) Take off camera, speaker and motor. 10
11 1) Take away SUB PBA from the slide upper. 1) Remove a green insulation tape.
2) Remove soldered joints on both sides of
FPCB.
3) Take an FPCB off.
4) Unscrew 3 screws at the bottom of SUB PBA.
12
1) Unscrew screws.