Samsung GT-I8320 User manual

GSM TELEPHONE
GT-i8320
1. Safety Precautions
2. Specification
3. Product Function
4. Array course control
5. Exploded View and Parts list
6. MAIN Electrical Parts List
7. Block Diagrams
8. PCB Diagrams
9. Chart of Troubleshooting
10. Reference data
11. Disassembly and Assembly
Instructions
GSM TELEPHONE CONTENTS

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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
specipicty of cellular phone is sensitive for surrounding interference(RF noise).
―Be careful to use akind of magnetic object or tool, because performance of parts is damaged by
the influence of magnetic force.
―Surely use astandard screwdriver when you disassemble this product, otherwise screw will be
worn away.
―Use athicken twisted wire when you measure level.
Athicken 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 arepair 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
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 acircuit board.

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2. Specification
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2-1
GSM 850 EGSM 900 DCS 1800 PCS 1900 WCDMA 900 WCDMA 2100
Freq.
Band[MHz]
Uplink/
Downlink
824~849
869~894
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
882.4~912.6
927.4~975.6
1920~1980
2110~2170
ARFCN range 128~251 0~124 &
975~1023 512~885 512~810 UL:2712~2863 DL:2937~3088
UL:9612~9888
DL:10562~10838
Tx/Rx
spacing 45 MHz 45MHz 90MHz 80MHz 45MH 190MHz
Mod. Bit
rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
3.84Mcps
(chip rate)
3.84Mcps
(chip rate)
Time Slot
Period/
Frame Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Frame length :
10ms
Slot length :
0.667ms
Frame length :
10ms
Slot length :
0.667ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK QPSK
HPSK
QPSK
HPSK
MS Power 33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm 24dBm~-50dBm 24dBm~-50dBm
Power Class 4
(max +33dBm)
4
(max +33dBm)
1
(max +30dBm)
1
(max +30dBm)
3
(max +24dBm)
3
(max +24dBm)
Sensitivity -102dBm -102dBm -100dBm -100dBm -104.7dBm -106.7dBm
TDMA Mux 88 8 8 - -
Cell Radius 35Km 35Km 2Km 2Km 2Km 2Km
2-1. GSM General Specification

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This Document can not be used without Samsung's authorization
Specification
2-2
TX Power
control level PCS1900
030±3
dBm
128±3
dBm
226±3
dBm
324±3
dBm
422±3
dBm
520±3
dBm
618±3
dBm
716±3
dBm
814±3
dBm
912±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
GSM850
GSM900
533±2
dBm
631±2
dBm
729±2
dBm
827±2
dBm
925±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
TX Power
control level DCS1800
030±3
dBm
128±3
dBm
226±3
dBm
324±3
dBm
422±3
dBm
520±3
dBm
618±3
dBm
716±3
dBm
814±3
dBm
912±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
2-2. GSM TX power class