Samsung SGH-P940 User manual

GSM TELEPHONE
SGH-P940
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

CONTENTS
1. Safety Precautions
1-1. Repair Precaution......................................................................................................1-1
1-2. ESD(Electrostatically Sensitive Devices) Precaution...............................................1-2
2. Specification
2-1. GSM General Specification.......................................................................................2-1
2-2. GSM Tx Power Class...............................................................................................2-2
3. Product Function
4. Array course control
4-1. Software Adjustments................................................................................................4-1
4-2. Software Downloading...............................................................................................4-2
5. Exploded View/Disassembly & Assembly Instructions
5-1. Cellular phone Exploded View ................................................................................5-1
5-2. Cellular phone Parts list............................................................................................5-2
5-3. Disassembly & Assembly Instructions......................................................................5-4
6. MAIN Electrical Parts List
7. Block Diagrams
8. PCB Diagrams

CONTENTS
9. Flow Chart of Troubleshooting
9-1. Power ON..................................................................................................................9-1
9-2. Initial...........................................................................................................................9-4
9-3. Sim Part.....................................................................................................................9-8
9-4. Speaker Part(Melody)..............................................................................................9-11
9-5. Microphone Part.......................................................................................................9-14
9-6. Key Data Input........................................................................................................9-16
9-7. Receiver Part...........................................................................................................9-17
9-8. Back Light (for Color Main LCD)...........................................................................9-19
9-9. Key Back Light........................................................................................................9-22
9-10. Camera Part...........................................................................................................9-24
9-11. GSM Receiver........................................................................................................9-27
9-12. GSM Transmitter....................................................................................................9-29
9-13. DCS Receiver........................................................................................................9-32
9-14. DCS Transmitter....................................................................................................9-34
9-15. PCS Receiver.........................................................................................................9-37
9-16. PCS Transmitter.....................................................................................................9-39
9-17. WCDMA Receiver..................................................................................................9-42
9-18. WCDMA Transmitter..............................................................................................9-44
9-19. DVB-H.....................................................................................................................9-46
10. Reference data

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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 specipicty 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
Packandtuningon.
―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.

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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 a circuit board.

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2. Specification
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2-1
EGSM900 DCS1800 PCS1900 W-CDMA
Freq.
Band[MHz]
Uplink/Downlink
890~915
935~960 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
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
Cell Radius 35Km 2Km 2Km 2Km
2-1. GSM General Specification

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Specification
2-2
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
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 PCS1800
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
2-2. GSM TX power class

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3. Product Function
3-1
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Main Function
―260K Color QVGA Screen (176×320 / 2.15"")
―6.5K OLED sub Screen (80*64/1.09")
―YAMAHA 64 poly
―Multimedia Message Service (MMS)
―E-mail
―Voice recorder
―Java / WAP2.0
―Quad-band(900/1800/1900/2100MHz)
―Bluetooth (Ver1.2)
―DVB-H
―2MEGA CAMERA

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Product Function
3-2
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4. Array course control
4-1
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4-1. Software Adjustments
12
34
56
1. JIG: Download, Trace, Calibration, etc
2. RF test cable: RF test
3. Test cable: JIG to phone
4. TA (Travel Adaptor)
5. Data Link Cable : USB cable
6. Serial cable: PC to JIG

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Array course control
4-2
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4-2. Software Downloading
4-2-1. Downloading Binary Files
• Four binary files for downloading SGH-P940.
– amss.bin : Modem binary for communication function
& Mocha binary for user interface and various application
– Rsrc_P940_Vodafone_Vanilla_Italy: Files need for each application
– Rsrc2_P940(Low).rc2 : Power on/off animation
– FactoryFS_P940_Vodafone_Vanilla_Italy.ffs : Default file system to be put into in
initial production
4-2-2. Pre-requsite for Downloading
• Downloader Program(FastMultiLoader V3.3.exe)
• SGH-P940 Mobile Phone
• USB Data Link Cable
• Binary files

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Array course control
4-3
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4-2-3. S/W Downloader Program
1. Boot the P940 by pressing ‘Power ON key’ + ‘Number 9 key’ at the same time-
If you do properly, you can see the following message on sub LCD “SGH-P940
DOWNLOAD”
2. Load the binary download program by executing the “FastMultiLoader V3.3.exe”. And
then Check the 6275/6280

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Array course control
4-4
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3. Select the check box what you want to download.
4. Select the binary file what you want to download

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Array course control
4-5
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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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Array course control
4-6
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5-1
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5. Exploded View/Disassembly&Assembly Instructions
5-1. Cellular phone Exploded View
QCA01
QCH01
QVK02
QLC02
QFL02
QCR49
QFU01
QRB01
QBR04
QSH01
QAN01
QSC13
QRF01
QCR06
QCR32
QMO01
QSP01
QVK01
QAN04
QCK01
QFL01
QVO01
QCR06
QMW01
QFU02
QKP01
QME01
QFR01
QMI03
QAN02
QCB01
QMP01
QAN05
QCR58
QRE01
QCR06
QBA01
QBA00
QMI01
QIF01
QHI01
QMP02
QSP02
QCA02
QLC01

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Exploded View/Disassembly&Assembly Instructions
5-2
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Design LOC Description SEC Code
QAN01 ANTENNA GH42-01008A
QAN02 INTENNA-SGH P940 GH42-01009A
QAN04 FPCB ANTENNA CHIP-SGH P940 GH42-01074A
QAN05 ASSY RUBBER-ANT CONTACT GH98-02820A
QBA00 ASSY CASE-BATT GH98-03001A
QBA01 INNER BATTERY PACK-880MAH , BL GH43-02666A
QBR04 ASSY RUBBER-BT GH98-03568A
QCA01 UNIT-CAMERA GH59-03742A
QCA02 UNIT-CAM KEY GH59-03077A
QCB01 COAXIAL CABLE-SGHP940 GH39-00687A
QCH01 ASSY HINGE-CAMERA GH98-01541A
QCK01 PMO-CAM KEY GH72-36399A
QCR06 SCREW-MACHINE 6001-001155
QCR06 SCREW-MACHINE 6001-001155
QCR06 SCREW-MACHINE 6001-001155
QCR32 SCREW-MACHINE 6001-001700
QCR49 SCREW-MACHINE 6001-001823
QCR58 SCREW-MACHINE 6001-001870
QFL01 ASSY CASE-FOLDER LOWER GH98-02815A
QFL02 NDC-CASE ARM LOWER V2 GH71-06136A
QFR01 ASSY CASE-FRONT GH98-02814A
QFU01 ASSY CASE-FOLDER UPPER GH98-02817A
QFU02 ASSY CASE-ARM UPPER GH98-02816A
QHI01 ASSY-HINGE-SWING HINGE GH98-01141A
QKP01 ASSY KEYPAD-(EU/BLK) GH98-02819A
QLC01 LCD-SGH P940 MODULE GH07-01029A
QLC02 LCD-SUB+FPCB GH07-01005A
QMI03 RMO-RUBBER MIC HOLDER V2 GH73-08833A
QMO01 MOTOR DC-SGHT209 GH31-00225A
QMP01 PBA MAIN-SGH-P940 GH92-03106A
QMP02 PBA-SUB SGH P940 GH92-03118A
QMW01 ASSY COVER-WINDOW MAIN GH98-02818A
QRB01 PMO-RING BOARD GH72-35386A
QRF01 MPR-TAPE CAP RF GH74-27676A
QSC13 RMO-RUBBER SCREW CAP REAR GH73-08458A
QSH01 ICT-SHIELD COVER GH70-01894A
QSP01 SPEAKER 3001-001968
QSP02 SPEAKER 3001-001976
QVK01 UNIT-VOLUME KEY GH59-03076A
QVK02 UNIT-TOUCH KEY GH59-03093A
QVO01 PMO-VOL KEY GH72-28866A
QME01 UNIT-KEY FPCB GH59-03704A
QMI01 AS-MIC SVC GH81-05445A
QRE01 ASSY CASE-REAR GH98-02999A
QIF01 PMO-COVER TF GH72-34693A
5-2. Cellular phone Parts list

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Exploded View/Disassembly&Assembly Instructions
5-3
This Document can not be used without Samsung's authorization
Description SEC Code
BAG PE 6902-000634
CBF INTERFACE-DATA LINK CABLE GH39-00444A
ADAPTOR-SGHE690,BLK,EU,A_TYPE GH44-01361A
S/W CD-SGHP940 PC LINK CD GH46-00347A
UNIT-EARPHONE,20P,B-TYPE GH59-03883A
LABEL(P)-IMEI GH68-01335D
LABEL(P)-WATER SOAK GH68-02026A
LABEL(R)-MAIN(EU) GH68-13074A
MANUAL USERS-OMN ITALIAN GH68-13082A
BOX-UNIT(EU) GH69-04705A
CUSHION-CASE(EU) GH69-04706A
NDC-ANT BUSHING GH71-07141A
NDC-ANT E RING GH71-07142A
NPR-ANT NUT GH71-07144A
PMO-DUMMY CARD GH72-36453A
PMO-ANT TUBE GH72-36454A
MPR-SPK LEADING TAPE GH74-12322A
MPR-BOHO VINYL FOLDER GH74-18217A
MPR-TAPE MAIN WINDOW GH74-24330A
MPR-TAPE FRONT HINGE GH74-24337A
MPR-TAPE SCREW CAP FOLDER GH74-24355A
MPR-VINYL BOHO ARM GH74-26177B
MPR-INSU TAPE FRONT GH74-27674B
MPR-GASK TAPE GH74-28820A
MPR-GASK TAPE GH74-29119A
MPR-GASK TAPE GH74-29120A
MPR-GASK TAPE GH74-29121A
MPR-TAPE GH74-29123A
MPR-TAPE SCREW CAP ARM GH74-29416A
MPR-VINYL BOHO TF COVER GH74-29559A
MPR-TAPE GH74-29560A
MPR-INSU TAPE GH74-29717A
MPR-SPONGE GH74-29719A
MPR-INSU TAPE GH74-29733A
MPR-INSU TAPE GH74-29734A
MPR-INSU TAPE GH74-29762A
MPR-INSU TAPE GH74-29763A
MPR-INSU TAPE GH74-29764A
MPR-INSU TAPE GH74-29765A
MPR-INSU TAPE GH74-29766A
MPR-INSU TAPE GH74-29767A
AS-LCD FPCB GH81-05945A
AS-SUB LCD SVC GH81-06086A

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Exploded View/Disassembly&Assembly Instructions
5-4
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Remove SCREW 6 POINT
REAR SCREW
CONNECTION POINT
(6POINT)
1) When remove REAR SCREW CAP and R/F SHEET,
When disjoint SCREW, take care lest scratch
should occur on ejection.
1) When use electric motion driver, take care do
not give damage to REAR.
Disassemble the Folder Ass'y and
Rear from the bottom of side
①
②
③ ③
②
Disassemble giving flow to right and left.
③② ①
     
1) After Disassemble priority REAR lower column
(①), side (②) and REAR Disjoint top portion (③)
sequentially.
1) When disjoint, Take care LOCKING wealth
damage and scratch attention.
2) When disjoint REAR top portion (③), do not inflict
force and disassemble giving flow to right and
left..

REAR SCREW CAP
(2POINT)
 

                             
Remove SCREW CAP 4 POINT
5-3. Disassembly&Assembly Instructions

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Exploded View/Disassembly&Assembly Instructions
5-5
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Separate MAIN PBA & SUB PBA CONN'.
   

Disjoint FPCBs


 
  
1) When disjoint CONN', pays attention to PIN
damage, and avoids for PBA piece part that
effect goes.
1) Disjoint KEYPAD FPCB, CAMERA FPCB,
LCD FPCB, INTENNA CONN'.
When is detached, emancipate PBA. Remove Intenna.


1) When disjoint CONN', pays attention to PIN
damage, and avoids for PBA piece part that
effect goes.
1) Disjoint Coaxial CABLE at left side guide groove.
2) Disjoint Intenna from right side on FRONT lower
column.
3) Disjoint COAXIAL CABLE at Intenna