SAMSUNG E740S Service 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

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. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.

ⓒ

Samsung Electronics Co.,Ltd.

2007. 07 Rev.1.0

1. Safety Precautions

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 b ecause 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.

―    

 

  

―

Colours of SGH-E740(Total of 8): Metal silver, Black dynamic, Light pink, Blue, Hot pink,

Print "

Stamp "

BLUE LED

" on the backside

" on the frontside

Blue green, Yellow green, Emerald green.

(see picture attached)

―

Among above eight,

only Metal silver needs Sky-blue LED,

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while the rest stay with White LED

Safety Precautions

BLU E LED

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Safety Precautions

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.

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Safety Precautions

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2. Specification

2-1. GSM General Specification

GSM 900

Phase 1

Freq. Band[MHz]

Uplink/Downlink

ARFCN range 1~124

Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz

Mod. Bit rate/

Bit Period

Time Slot

Period/Frame Period

Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK

890~915 935~960

270.833kbps

3.692us

576.9us

4.615ms

EGSM 900

Phase 2

880~915 925~960

0~124 &

975~1023

270.833kbps

3.692us

576.9us

4.615ms

DCS1800

Phase 1

1710~1785 1805~1880

512~885 512~810

270.833kbps

3.692us

576.9us

4.615ms

PCS1900

1850~1910 1930~1990

270.833kbps

3.692us

576.9us

4.615ms

MS Power 33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm

Power Class

Sensitivity -102dBm -102dBm -100dBm -100dBm

TDMA Mux 8 8 8 8

Cell Radius 35Km 35Km 2Km 2Km

(max +33dBm)

2-1

(max +30dBm)

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Specification

2-2. GSM TX power class

TX Power

control level

533±2dBm

631±2dBm

729±2dBm

827±2dBm

925±2dBm

10 23±2 dBm

11 21±2 dBm

GSM900

TX Power

control level

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

DCS1800

TX Power

control level

030±3dBm

128±3dBm

226±3dBm

324±3dBm

422±3dBm

520±3dBm

618±3dBm

PCS1900

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

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

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

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3. Operation Instruction and Installation

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

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Operation Instruction and Installation

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4. Array course control

4-1. Software Adjustments

Test Jig (GH80-03306A)

Serial Cable(CSA LL64151-A)

Test Cable (GH39-00499A)

Power Supply Cable

Data Cable

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Array course control

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

. Select the connected serial port and the rate of speed

. 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'

)

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3. Select the file(s) what you want to download

Array course control

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Array course control

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5. Exploded View/Disassembly&Assembly Instructions

5-1. Cellular phone Exploded View

QFU01

QKP02

QCA01 QSP01

QMO01 QLC01

QFU04

QMW02

QCR47

QFR01

QCR57

QKP01

QMI03

QME01

QMI01

QSH01

QMP01

QME02

QAN02

QCR72

QCK01

QIF01

QCR58 QME16

QFL01

QCR72 QSC01

QSC02

QRF12

QHI02

QRE01

QVO01

QSD01

QCR72

QCR72 QCR67

QRE04

QBA01

QBA00

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Exploded View/Disassembly&Assembly Instructions

5-2. Cellular phone Parts list

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

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Exploded View/Disassembly&Assembly Instructions

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

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Exploded View/Disassembly&Assembly Instructions

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.

1) Take care of not scratching on the rear cover.

2) Use a disassembly tool.

1) Unscrew 6 rear screws.

1) Unscrew screws.

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) 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.

1) Use a cruciform screwdriver.

Pull out the connector.

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Exploded View/Disassembly&Assembly Instructions

1) Pull out the LCD connector raising a PBA

by your own hand.

Pull out the connector

1) Be aware of not damaging on FPCB.

1) Take off volume key FPCB and camera key

FPCB outward from the front.

2) Take off a shield can from the front.

1) Be aware of not damaging on camera key and volume key FPCBs.

1) Unscrew 4 front screws.

Unscrew

screws.

1) Take care of not scratching on the front.

2) Use a cruciform screwdriver.

1) Remove 2 screw caps at the top of the

slide lower with tweezers.

2) Unscrew 4 slide lower screws.

1) Remove screw caps.

2) Unscrew screws.

1) Unscrew screws.

1) Take care of not scratching on the slide lower.

2) Use a cruciform screwdriver.

3) When you remove screw caps, use tweezers.

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Exploded View/Disassembly&Assembly Instructions

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.

1) Take care of not scratching on the slide upper and lower.

2) Use a disassembly tool.

1) Take off camera, speaker and motor.

1) Pay special attention to not scratching on FPCB and damaging on nearby components.

1) Take away SUB PBA from the slide upper.

1) Be careful of not scratching on LCD.

2) Be aware of dust inside the main window of 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.

1) Unscrew screws.

1) Pay special attention to surrounding components when using a soldering iron.

Use a cruciform screwdriver.

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5-3-2. Assembly

Exploded View/Disassembly&Assembly Instructions

1) Adhere a conductivity tape above the zip

1 2

connector.

2) Insert an FPCB into the zip connector and solder both sides of FPCB.

3) Put a green insulation tape on FPCB standing on the white silk line.

4) Tighten 3 screws with a SUB keypad.

②

③

①

4) Tighten screws.

1) Pay special attention to not scratching on FPCB and

damaging on nearby components.

1) Put a sub PBA on slide upper.

2) Make camera, speaker and motor reach safe.

*Attention!!

Let motor wire be

inside a groove(

) surely.

1) Pay special attention to not scratching on FPCB.

2) Be aware of dust inside the main window of slide upper.

1) After putting slide hinge up, insert

slide FPCB into the hole.(1)

2) Put the top of slide lower into the hook

first.(2)

3) Press down 5 hooks of slide lower.(3)

①

③

②

1) Pay special attention to not cracking on FPCB. 1) Use a cruciform screwdriver.

1) Tighten 4 screws.

1)Tighten screws.

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Exploded View/Disassembly&Assembly Instructions

1) Attach screw caps to screws at the

5 6