Samsung Service Manual SGH-I710, Service Manual do Tel.komórkowych, Samsung - Service Manual
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GSM TELEPHONE
SGH-i710
GSM TELEPHONE
CONTENTS
1. Safety Precautions
2. Specification
3. Operation Instruction and
Installation
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
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 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 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.
1-1
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This Document can not be used without Samsung's authorization
S
afety 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.
1-2
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This Document can not be used without Samsung's authorization
2. Specification
2-1. GSM General Specification
GSM850
Phase 1
EGSM 900
Phase 2
DCS1800
Phase 1
PCS1900
Freq.
Band[MHz]
Uplink/Downlink
824~849
869~894
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
ARFCN range
128~251
0~124 &
975~1023
512~885
512~810
Tx/Rx spacing
45MHz
45MHz
95MHz
80MHz
Mod. Bit rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
Time Slot
Period/Frame
Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Modulation
0.3GMSK
0.3GMSK
0.3GMSK
0.3GMSK
MS Power
33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power Class
5pc l ~ 19pc l
5pcl ~ 19pcl
0pcl ~ 15pcl
0pcl ~ 15pcl
Sensitivity
-102dBm
-102dBm
-100dBm
-100dBm
TDMA Mux
8
8
8
8
Cell Radius
35Km
35Km
2Km
2Km
2-1
Specification
2-2. GSM Tx Power Class
TX Power
control
level
GSM850
TX Power
control
level
EGSM900
TX Power
control
level
DCS1800
TX Power
control
level
PCS1900
5
33±2 dBm
5
33±2 dBm
0
30±3 dBm
0
30±3 dBm
6
31±2 dBm
6
31±2 dBm
1
28±3 dBm
1
28±3 dBm
7
29±2 dBm
7
29±2 dBm
2
26±3 dBm
2
26±3 dBm
8
27±2 dBm
8
27±2 dBm
3
24±3 dBm
3
24±3 dBm
9
25±2 dBm
9
25±2 dBm
4
22±3 dBm
4
22±3 dBm
10
23±2 dBm
10
23±2 dBm
5
20±3 dBm
5
20±3 dBm
11
21±2 dBm
11
21±2 dBm
6
18±3 dBm
6
18±3 dBm
12
19±2 dBm
12
19±2 dBm
7
16±3 dBm
7
16±3 dBm
13
17±2 dBm
13
17±2 dBm
8
14±3 dBm
8
14±3 dBm
14
15±2 dBm
14
15±2 dBm
9
12±4 dBm
9
12±4 dBm
15
13±2 dBm
15
13±2 dBm
10
10±4 dBm
10
10±4 dBm
16
11±3 dBm
16
11±3 dBm
11
8±4 dBm
11
8±4 dBm
17
9±3dBm
17
9±3dBm
12
6±4 dBm
12
6±4 dBm
18
7±3 dBm
18
7±3 dBm
13
4±4 dBm
13
4±4 dBm
19
5±3 dBm
19
5±3 dBm
14
2±5 dBm
14
2±5 dBm
15
0±5 dBm
15
0±5 dBm
2-2
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