Samsung SGH-X820 Service Manual
GSM TELEPHONE
SGH-X820
GSM TELEPHONE
CONTENTS
1. Safety Precautions
2. Specification
3. Product Function
4. Array course control
5. Exploded View and Parts List
6. Disassembly and Assembly
instructions
7. MAIN Electrical Parts List
8. Block Diagrams
9. PCB Diagrams
10. Flow Chart of Troubleshooting
11. 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
3-1. Main Function ................................................................................3-1
4. Array course control
Software Downloading
4-1. Downloading Binary Files ................................................................4-2
4-2. Pre-requsite for Downloading ..........................................................4-2
4-3. S/W Downloader Program ...............................................................4-3
5. Exploded View and Parts List
5-1. Cellular phone Exploded View .........................................................5-1
5-2. Cellular phone Part list ...................................................................5-2
6. Disassembly and Assembly instructions
6-1. Disassembly ..................................................................................6-1
6-2. Assembly ......................................................................................6-3
6-3. LCD KIT Disassembly .....................................................................6-6
6-4. LCD KIT Assembly .........................................................................6-7
7. MAIN Electrical Pa rts List
8. Block Diagrams
9. PCB Diagrams
Contents
10. Flow Chart of Troubleshooting
10-1. Baseband
10-1-1. Power ON ..............................................................................10-1
10-1-2. Initial ....................................................................................10-4
10-1-3. Sim Part ...............................................................................10-6
10-1-4. Charging Part ........................................................................10-8
10-1-5. Microphone Part .....................................................................10-9
10-1-6. Speaker Part ........................................................................10-11
10-1-7. LCD ....................................................................................10-13
10-1-8. Camera ...............................................................................10-16
10-2. RF
10-2-1. GSM Receiver........................................................................10-18
10-2-2. DCS Receiver........................................................................10-19
10-2-3. PCS Receiver.........................................................................10-20
10-2-4. GSM Transmitter...................................................................10-23
10-2-5. DCS Transmitter....................................................................10-24
10-2-6. PCS Transmitter....................................................................10-25
10-2-7. Bluetooth Part ......................................................................10-27
11. Reference data
1. Safety Precautions
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 manetic 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 disassembing 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.
1-1
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Safety Precautions
1-2. ESD(Electrostatically Sensitive Devices) Precaution
Several semiconductor may be damaged easilly by static electricity. Such parts are called by
ESD(Electrostatically Sensitive Devices), for e xample 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.
1-2
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2. Specification
2-1. GSM General Specification
GSM900
Phase 1
Freq. Band[MHz]
Uplink/Downlink
ARFCN range 1~124
Tx/Rx spacing 45 MHz 45 MHz 95 MHz 80 MHz
Mod. Bit rate/
Bit Period
Time Slot
Period/Frame
Period
Modulation 0.3 GMSK 0.3 GMSK 0.3 GMSK 0.3 GMSK
MS Power 33 dBm~13 dBm 33 dBm~5 dBm 30 dBm~0 dBm 30 dBm~0 dBm
890~915
935~960
270.833 kbps
3.692 us
576.9 us
4.615 ms
EGSM 900
Phase 2
880~915
925~960
0~124 &
975~1023
270.833 kbps
3.692 us
576.9 us
4.615 ms
DCS1800
Phase 1
1710~1785
1805~1880
512~885 512~810
270.833 kbps
3.692 us
576.9 us
4.615 ms
PCS1900
1850~1910
1930~1990
270.833 kbps
3.692 us
576.9 us
4.615 ms
Power Class 5 pcl ~ 15 pcl 5 pcl ~ 19 pcl 0 pcl ~ 15 pcl 0 pcl ~ 15 pcl
Sensitivity -102 dBm -102 dBm -100 dBm -100 dBm
TDMA Mux 8 8 8 8
Cell Radius 35 Km 35 Km 2 Km -
2-1
Speclflcation
2-2. GSM Tx Power Class
TX Power
control level
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±3 dBm
17 9±3 dBm
18 7±3 dBm
19 5±3 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
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
DCS1800
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
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
PCS1900
15 0±5 dBm
2-2
15 0±5 dBm
3. Product Function
Main Function
-Camera and camcorder
-Image editor
-Music player
-Bluetooth
-Photo printing
-Phone to TV
-Image editor
-File viewer
-Web bro wser
-Java
-Offline mode
-Multimedia Message Service (MMS)
-E-mail
3-1
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4. Array course control
Test Jig (GH80-03307A)
Test Cable (GH39-00478A)
RF Test Cable (GH39-00182A)
4-1
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Array course control
Software Downloading
4-1. Downloading Binary Files
• Three binary files for downloading X820.
–X820XXYY.s3:Mainsourcecodebinary.
4-2. Pre-requsite for Downloading
• Downloader Program(OptiFlash.exe)
• X820 Mobile Phone
• Data Cable
• Binary files
4-2
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Array course control
4-3. S/W Downloader Program
1. Load the binary download programby executing the “OptiFlash.exe”
2. Select the “Options” -> “Settings” -> “Generic” -> “Specify hardware
platform”.
Choose hardware platform for the downloader file sett ing.
Set the everything else as the d efault values which are shown below
4-3
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Array course control
3. Select the COM port when the download cable is connected
Up to twelve ports are supported. Additionally you can select the
maximum transfer speed OptiFlash will use to communicate with
the phone. However, OptiFlash will use a slower speed if either the
PC’s or the phone’s serial hardware is incapable of handling the
selected speed
4-4
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Array course control
4. Select the“Flash&Verify” -> “Browse”
Set the directory path and choose the latest s/w binary, for example
“X820XXYY.s3”,for the downloader binary setting.
Make sure that not to change the reserved memory
regions.
In case of X820 the reserved regions are :
-0x20000010 – 0x2000ffff
-0x21ff0000– 0x21ff1fff
-0x29000000 – 0x30000000
4-5
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Array course control
5. Click “OK” button then press “Flash”.
(Before pressing ‘Flash’ button, push the button ‘*’and ‘END’ at the same
time. Then press ‘Flash’.)
Downloader will upload the binary file as below for the downloading.
6. When downloading is finished successfully, there is a “All is well”
message.
7. After finishing downloading, Certain memory resets should be done to
guarantee the normal performance.
8. Confirm the downloaded version name and etc. :
*#1234#
Full Reset :
*2767*3855#
4-6
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5. Exploded View and Parts List
5-1. Cellular phone Exploded View
QFR01
QVO01
QKP01
QME01
QMI03
QCK01
QLC01
QSP02
QAN02
QVK01
QCA01
QRE01
QCR06
QSC01
QSC02
QCW01
QMI07
QCR05
QMP01
QCA02
QRF03
QBA01
QRF01
5-1
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QBA00
Main Electrical Parts List
5-2. Cellular phone Parts list
Design LOC Discription SEC CODE
QAN02
QBA00
QBA01
QCA01
QCA02
QCK01
QCR05
QCR06
QCW01
QKP01
QLC01
QME01
QMI07
QMP01
QRF01
QSC01
QSC02
QSP02
QVK01
QVO01
QFR01
QRE01
INTENNA-SGHX820 GH42-00791A
PMO-CASE BATTERY GH72-29063A
INNER BATTERY PACK-630MAH,BLK, GH43-02386A
UNIT-CAMERA GH59-02950A
UNIT-CAMERA KEY GH59-03026A
MEC-CAM KEY GH75-09582A
SCREW-MACHINE 6001-001478
SCREW-MACHINE 6001-001155
PMO-COVER WINDOW CAMERA GH72-29074A
MEC-KEYPAD(ZKA/XEF) GH75-09583A
LCD-SGHX820 MODULE GH07-00882A
UNIT-EL KEY PBA GH59-02966A
ASSY-CASE-MIC SUB GH98-01045A
PBA MAIN-SGH-X820 GH92-02621A
PMO-COVER RF GH72-29064A
PMO-COVER SCREW L GH72-29065A
PMO-COVER SCREW R GH72-29066A
UNIT-SPK MODULE GH59-02958A
UNIT-VOLUMEKEY GH59-03027A
MEC-VOLUME KEY GH75-09581A
MEC-CASE FRONT GH75-09579A
QMI03 RMO-COVER MIC HOLDER GH73-06452A
MEC-CASE REAR GH75-09580A
QRF03 PMO-COVER EAR JACK GH72-29073A
5-2
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Main Electrical Parts List
Discription SEC CODE
BAG PE 6902-000297
ADAPTOR-SGHD800 TA(EU) GH44-01060A
UNIT-EARPHONE(BLK) GH59-02499A
LABEL(P)-IMEI GH68-01335D
LABEL(P)-WATER SOAK GH68-02026A
LABEL(P)-WATER SOAK GH68-02026A
MANUAL USERS-EU FRENCH GH68-10846A
LABEL(R)-MAIN(FRANCE) GH68-10850A
BOX(P)-UNIT MAIN(EU) GH69-03932A
CUSHION-CASE TA2 MA4 GH69-03934A
RMO-CHSHION INDUCTOR-2 GH73-07097A
MPR-TAPE LCD FPCB GH74-20633A
MPR-CUSHION INDUCTOR-1 GH74-21005A
MPR-VINYL BOHO REAR GH74-21012A
MPR-VINYL BOHO MAIN WINDOW GH74-21905A
MPR-TAPE SPK CONN GH74-22095A
MPR-TAPE SPK CONN GH74-22095A
MPR-TAPE KEYPAD CONN GH74-22098A
MPR-VINYL BOHO KEYPAD GH74-22928A
MPR-CUSHION INDUCTOR-3 GH74-23850A
MPR-VINYL BOHO LCD GH74-24623A
MPR-VINYL BOHO REAR-2 GH74-25033A
MPR-VINYL BOHO EAR DECO GH74-25298A
AS-LCD WINDOW GH81-03179A
AS-TAPEKEYPAD GH81-04637A
AS-LCD TAPE GH81-04638A
5-3
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6. Disassembly and Assembly instructions
6-1. Disassembly
1
1) Remove SCREW CAP
2) release the screws(4 point)
※
caution
1) Handle with care. No scratch
2
-Please use dismantle
tool to open
-REAR case is too
soft to be broken
1) Press the Rear Camera Hook side with the
dismantle tool to release the locker
※
caution
1) Handle the HOOK with care, and check No
bending the board and front/rear cover
43
1) Press the rear sim connector Hook side
with the dismantle tool to release the
locker
※
caution
1) Handle with care. No scratch
2) Handle the HOOK with care, and check No
bending the board and front/rear cover
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1) Press the Rear volume key side (upper and
lower) with the dismantle tool to release
the locker
2) Open the rear cover
※
caution
1) Handle with care. No scratch
2) Handle the HOOK with care, and check No
bending the board and front/rear cover
6-1
Disassembly and Assembly instructions
5
1) Separate CAMERA KEY and VOLUME KEY
from the cover
※
caution
1) FPCB is easy to break and crack
7
6
1) remove EL SHEET F-PCB
CONNECTOR TAPE
2) unlock the connector LOCKER and
separate key F-PC
※
caution
1) FPCB is easy to break and crack
2) Connector is easy to break
8
1) take off the CAMERA CONNECTOR
2) Separate CAMERA MODULE
※
caution
1) Camera FPCB is easy to break
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1) Take off LCD CONNECTOR
2) Separate LCD MODULE
※
caution
1) LCD glass and LDI are easy to break.
Separate LCD module slowly with care
6-2
6-2. Assembly
Disassembly and Assembly instructions
1
1) Prepare the EL KEY SHEET
2) Remove the release paper
3) Insert the MIC into the hole of FRONT
lower hole
※
caution
1) Handle the MIC F-PCB with care. This FPCB
tears easily.
3
2
1) Insert KEY FPCB into the FRONT upper
hole
2) attach a EL KEY PAD to the Front cover
※
caution
1) KEY FPCB has to be inserted before the
sheet attached.
2)HandletheKEYF-PCBwithcare.ThisFPCB
tears easily.
4
1) Place the MIC as the picture below
※
caution
1) Check the MIC FPCB is OK
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1) Put the MIC COVER and CREW
2) Attach KEYPAD
3) Press the KEYPAD not to be detached
※
caution
1) Check the KEY PAD is OK
6-3
Disassembly and Assembly instructions
5
1) Separated INTENNA ASS'Y and SPEAKER
MOTOR MODULE
7
6
1) Combine the module.
※
caution
1)MakesuretheFPCBplace
8
1) Open the INTENNA ASS'Y F-PCB
CONNECTOR LOCKER
2) put the module on the board with checking
the PCB guide and FPCB at the same time
※
caution
1) SPK FPCB has to be inserted to the SILK
line
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1)Solder INTENNA pad.
2) Put the blue tape on the connector
6-4
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