Samsung SGH-E790 User manual

GSM TELEPHONE
SGH-E790
GSM TELEPHONE CONTENTS
1. Specification
2. Exploded View and Parts list
3. Chart of Troubleshooting
4. Array course control
5. Block Diagrams
6. PCB Diagrams
7. MAIN Electrical Parts List
8. Reference data
9. Safety Precautions
10. Product Function

Contents
1. Specification
1-1. GSM General Specification .......................................................................................1-1
1-2. GSM TX power class ...............................................................................................1-2
1-3. EDGE TX Power Level .............................................................................................1-3
2. Exploded View and Parts list
2-1. Cellular phone Exploded View ..................................................................................2-1
2-2. Cellular phone Parts list ............................................................................................2-2
2-3. Disassembly ...............................................................................................................2-4
2-4. Assembly ....................................................................................................................2-8
3. Chart of Troubleshooting
3-1. Baseband ............................................................................................................3-1
3-1-1. Power ON .....................................................................................................3-1
3-1-2. Initial .............................................................................................................3-4
3-1-3. SIM Part .......................................................................................................3-6
3-1-4. Microphone Part ...........................................................................................3-8
3-1-5. Speaker Part_1(MP3, SPEAKER PHONE) ..............................................3-10
3-1-6. Speaker Part_2(RECEIVER) .....................................................................3-13
3-1-7. Charging Part .............................................................................................3-14
3-2. RF ......................................................................................................................3-13
3-2-1. EGSM RX ..................................................................................................3-17
3-2-2. DCS RX .....................................................................................................3-19
3-2-3. PCS RX ......................................................................................................3-21
3-2-4. EGSM TX ...................................................................................................3-22
3-2-5. DCS/PCS TX .............................................................................................3-24

Contents
4. Array course control
4-1. Downloading Binary Files ......................................................................................4-1
4-2. Pre-requsite for Downloading ................................................................................4-1
4-3. S/W Downloader Program .....................................................................................4-2
4-4. How to Download ...................................................................................................4-2
5. Block Diagrams
5-1. RF Solution Block Diagram ......................................................................................5-1
5-2. Base Band Solution Block Diagram .........................................................................5-2
6. PCB Diagrams
7. MAIN Electrical Parts List
8. Reference data
8-1. Reference Abbreviate ..............................................................................................8-1
9. Safety Precautions
9-1. Repair Precaution ......................................................................................................9-1
9-2. ESD(Electrostaically Sensitive Devices) Precaution ................................................9-2
10. Product Function

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1. Specification
This Document can not be used without Samsung's authorization
1-1
1-1. GSM General Specification
EGSM900 DCS1800 PCS1900
Freq. Band[MHz]
Uplink/Downlink
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
ARFCN range 0~124&
975~1023 512~885 512~810
Tx/Rx spacing 45 MHz 95 MHz 80 MHz
Mod. Bit rate/
Bit Period
GPRS 270.833 Kbps
3.692 us
270.833 Kbps
3.692 us
270.833 Kbps
3.692 us
EDGE 812.5 Kbps
3.692 us
812.5 Kbps
3.692 us
812.5 Kbps
3.692 us
Time Slot Period/Frame
Period
576.9 us
4.615 ms
576.9 us
4.615 ms
576.9 us
4.615 ms
Modulation
GPRS 0.3 GMSK 0.3 GMSK 0.3 GMSK
EDGE 8 PSK 8 PSK 8 PSK
MS Power
GPRS 33 dBm~5 dBm 30 dBm~0 dBm 30 dBm~0 dBm
EDGE 27~5 dBm 26~0 dBm 26~0 dBm
Power Level
GPRS 5~19(class4) 0~15(class1) 0~15(class1)
EDGE 8~19(class E2) 2~15(class E2) 2~15(class E2)
Sensitivity -102 dBm -100 dBm -102 dBm
TDMA Mux 8 8 8
Cell Radius 35 Km 2 Km 2 Km

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Specification
1-2
This Document can not be used without Samsung's authorization
1-2. GSM TX power class
TX
Power
control
level
DCS1800
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±4 dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
TX
Power
control
level
PCS1900
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±4 dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
TX
Power
control
level
EGSM900
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±2 dBm
17 9±2 dBm
18 7±2 dBm
19 5±2 dBm

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Specification
1-3
This Document can not be used without Samsung's authorization
1-3. EDGE TX Power Level
TX
Power
control
level
DCS1800
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4dBm
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm
TX
Power
control
level
PCS1900
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4 dBm
11 8±4 dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
TX
Power
control
level
EGSM900
827±3dBm
925±3dBm
10 23±3 dBm
11 21±3 dBm
12 19±3 dBm
13 17±3 dBm
14 15±3 dBm
15 13±3 dBm
16 11±5 dBm
17 9±5 dBm
18 7±5 dBm
19 5±5 dBm

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2. Exploded View and Parts List
2-1
This Document can not be used without Samsung's authorization
2-1. Cellular phone Exploded View
QBA00
QFR01
QVO01
QSD01
QKP01
QMP01
QAN02
QRE01
QCR05
QVK01
QME01
QIF01
QCA01
QMW01
QLC01
QFU01
QSP01
QMO01
QHI01
QFL01
QMI03
QMI01
QCR05
QBA01
QCK01
QCA02
QAN05
QSC05
QSC06
QBR05
QLB01

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Exploded View and Parts List
2-2
This Document can not be used without Samsung's authorization
Design LOC Discription SEC CODE
QAN02 INTENNA-SGHE790 GH42-00981A
QAN05 ASSY MEC-INTENNA CONTACT GH75-08168A
QBA00 PMO-COVER BATT GH72-34003A
QBA01 INNER BATTERY PACK-800MAH,BLK, GH43-02644A
QCA01 UNIT-CAMERA GH59-03723A
QCA02 UNIT-CAMERA KEY FPCB GH59-03666A
QCK01 PMO-SIDE KEY CAMERA GH72-34006A
QCR05 SCREW-MACHINE 6001-001478
QCR05 SCREW-MACHINE 6001-001478
QKP01 ASSY KEYPAD-MAIN(SER/OS) GH98-03264A
QME01 UNIT-DOMESHEET GH59-03664A
QMI01 MICROPHONE-ASSY-5.25MM GH30-00178C
QMI03 RMO-RUBBER MIC GH73-07953A
QMO01 MOTOR DC-SGHZ130 GH31-00154C
QMP01 PBA MAIN-SGHE790 (PBA MAIN) GH92-02977A
QRE01 ASSY CASE-REAR GH98-02157A
QSC05 RMO-RUBBER F/L SCREW L GH73-07951A
QSC06 RMO-RUBBER F/L SCREW R GH73-07952A
QSP01 SPEAKER 3001-002052
QVK01 UNIT-VOLUME KEY FPCB GH59-03645A
QVO01 PMO-SIDE KEY VOLUME GH72-34007A
QLC01 ELA UNIT-SGHE790 LCD MODULE GH96-02272A
QMW01 ASSY COVER-MAIN WINDOW GH98-02256A
QFU01 ASSY CASE-FOLDER UPPER GH98-02156A
QLB01 ASSY BRACKET-LCD GH98-02159A
QFL01 ASSY CASE-FOLDER LOWER GH98-02155A
QHI01 ASSY MEC-HINGE(CAN TYPE) GH75-04662A
QBR05 ASSY CASE-BRACKET LOWER GH98-03619A
QFR01 ASSY CASE-FRONT GH98-02154A
QIF01 PMO-COVER IF EARJACK GH72-34004A
QSD01 PMO-COVER MICRO SD GH72-34005A
2-2. Cellular phone Parts list

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Exploded View and Parts List
2-3
This Document can not be used without Samsung's authorization
Discription SEC CODE
BAG PE 6902-000297
CBF INTERFACE-DATA LINK CABLE GH39-00444B
ADAPTOR-SGHE690,SIL,EU,A_TYPE GH44-01361B
S/W CD-SGHE790 PC STUDIO 3.1 GH46-00366A
UNIT-EARPHONE,SGHZ370,SIL,A-TY GH59-03679B
LABEL(P)-WATER SOAK GH68-02026A
LABEL(P)-WATER SOAK GH68-02026A
MANUAL-SFC GH68-04336A
LABEL(P)-BARCODE RUSSIA GH68-08494A
MANUAL USERS-EU RUSSIAN GH68-13125A
LABEL(R)-MAIN(SER) GH68-13217B
BOX(P)-UNIT MAIN(SER) GH69-04786B
CUSHION-CASE TA2 MA2 GH69-04787A
MPR-REMOVE TAPE LCD GH74-13804A
MPR-TAPE LED GH74-17926A
MPR-TAPE MAIN LDI GH74-19992A
MPR-GASK TAPE GH74-21836A
MPR-VINYL BOHO MAIN WINDOW GH74-22341A
MPR-VINYL BOHO F/L A GH74-26477A
MPR-VINYL BOHO F/U C GH74-26478A
MPR-TAPE GH74-27509A
MPR-GASK TAPE GH74-27520A
MPR-INSU TAPE LCD TOP GH74-27523A
MPR-TAPE FRONT NET GH74-27542A
MPR-INSU TAPE GH74-27955A
MPR-INSU TAPE GH74-27956A
MPR-INSU TAPE GH74-28242A
MPR-SPONGE GH74-29421A
MPR-INSU TAPE LED A GH74-29821A

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Exploded View and Parts List
2-4
This Document can not be used without Samsung's authorization
2-3. Disassembly
1
43
2
1) Disassemble the LCD CONNECTOR
2) Disassemble the PBA from the FRONT ASS'Y
3) Remove the DUST TAPE
4) Disassemble the Keypad.
※caution
1) When PBA is separated from LCD Connector,
Be careful not to damage!
2) Be careful not to damage LCD FPCB!
1) Push the hinge between Folder Upper and lower,
And Disassemble Front from Folder.
※caution
1) Be careful not to make scratch and molding
damage!
2) Be careful not to damage LCD FPCB!
1) Unscrew the REAR at the four points.
2) Disassemble the IF COVER
※caution
1) Be careful not to make scratch and molding
damage!
1) Disassemble the Rear from the bottom side
to the upper side.
※caution
1) Be careful not to make scratch and molding
damage!
PULL OUT
"FRONT
CASE"
PULL OUT
"FRONT
CASE"