08
SM
M-C71
Mobile
Device
CONT
TENTS
utions
1. Saf
2. Spe
3. Pro
4. Exp
5. MA
6. Lev
7. Lev
8. Lev
9. Ref
ety Precau
ecification
duct Func
ploded Vie
IN Electric
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1. Safety Precautions
1-1. Repair Precaution
Before attempting any repair or detailed tuning, shield the device from RF noise or static
electricity discharges.
Use only demagnetized tools that are specifically designed for small electronic repairs,
as most electronic parts are sensitive to electromagnetic forces.
Use only high quality screwdrivers when servicing products. Low quality screwdrivers can
easily damage the heads of screws.
Use only conductor wire of the properly gauge and insulation for low resistance, because of the low margin
of error of most testing equipment.
We recommend 22-gauge twisted copper wire.
Hand-soldering is not recommended, because printed circuit boards (PCBs) can be easily
damaged, even with relatively low heat. Never use a soldering iron with a power rating of
more than 100 watts and use only lead-free solder with a melting point below 250°C (482°F).
Prior to disassembling the battery charger for repair, ensure that the AC power is disconnected.
Always use the replacement parts that are registered in the SEC system. Third-party replacement parts
may not function properly.
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
1. Safety Precautions
1-2. ESD(Electrostatically Sensitive Devices) Precaution
Many semiconductors and ESDs in electronic devices are particularly sensitive to static discharge and can
be easily damaged by it. We recommend protecting these components with conductive anti-static bags
when you store or transport them.
Always use an anti-static strap or wristband and remove electrostatic buildup or dissipate
static electricity from your body before repairing ESDs.
Ensure that soldering irons have AC adapter with ground wires and that the ground wires are properly
connected.
Use only desoldering tools with plastic tips to prevent static discharge.
Properly shield the work environment from accidental electrostatic discharge before opening
packages containing ESDs.
The potential for static electricity discharge may be increased in low humidity environments,
such as air-conditioned rooms. Increase the airflow to the working area to decrease the
chance of accidental static electricity discharges.
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2. Specification
2-1. CDMA & GPS General Specification
ITEM
Tx Freq. range
Rx Freq. range
Channel Bandwidth
Channel Spacing
Number of Channel
Duplex Separation
In/Output Impedance
Tx Local Frequency
Rx Local Frequency
TCXO Frequency
Freq. Stability
CDMA
824.025~848.985MHz
GPS
-
869.025~893.985MHz
1575.42MHz
1.23MHz
30KHz
832
45MHz
50Ohm
FTx * 1.6666
FRx * 2
26MHz
(FRX-45MHz)±300Hz
2MHz
Not Used
1
-
50Ohm
-
FRx * 2
26MHz
-
Operating Temperature
-30℃ ~ +60℃
-30℃ ~ +60℃
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2. Specification
Item
Freq. Band[MHz]
Uplink/Downlink
ARFCN range
GSM 850
824~849
869~894
128~251
Tx/Rx spacing
45MHz
EGSM 900
880~915
925~960
0~124 &
975~1023
45MHz
DCS1800
1710~1785
1805~1880
512~885
PCS1900
1850~1910
1930~1990
512~810
95MHz
80MHz
Mod. Bit rate/
Bit Period
Time Slot Period/
Frame Period
Modulation
GSM/
GPRS
MS Power
270.833kbps
270.833kbps
270.833kbps
270.833kbps
3.692us
576.9us
4.615ms
0.3GMSK
33dBm
~5dBm
3.692us
576.9us
4.615ms
0.3GMSK
33dBm
~5dBm
3.692us
576.9us
4.615ms
0.3GMSK
30dBm
~0dBm
3.692us
576.9us
4.615ms
0.3GMSK
30dBm
~0dBm
Power Class
5pcl ~ 19pcl
5pcl ~ 19pcl
0pcl ~ 15pcl
0pcl ~ 15pcl
Sensitivity
-102dBm
-102dBm
-100dBm
-100dBm
TDMA Mux
Cell Radius
8
35Km
8
35Km
8
2Km
8
2Km
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2. Specification
2-2. GSM Tx Power Class
TX Power
control level
TX Power
control level
GSM850
33±2 dBm
31±2 dBm
29±2 dBm
27±2 dBm
25±2 dBm
23±2 dBm
21±2 dBm
19±2 dBm
17±2 dBm
15±2 dBm
13±2 dBm
11±3 dBm
9±3 dBm
7±3 dBm
5±3 dBm
-
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
-
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
-
EGSM900
33±2 dBm
31±2 dBm
29±2 dBm
27±2 dBm
25±2 dBm
23±2 dBm
21±2 dBm
19±2 dBm
17±2 dBm
15±2 dBm
13±2 dBm
11±3 dBm
9±3 dBm
7±3 dBm
5±3 dBm
-
TX Power
control level
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DCS1800
30±3 dBm
28±3 dBm
26±3 dBm
24±3 dBm
22±3 dBm
20±3 dBm
18±3 dBm
16±3 dBm
14±3 dBm
12±4 dBm
10±4 dBm
8±4 dBm
6±4 dBm
4±4 dBm
2±5 dBm
0±5 dBm
TX Power
control level
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PCS1900
30±3 dBm
28±3 dBm
26±3 dBm
24±3 dBm
22±3 dBm
20±3 dBm
18±3 dBm
16±3 dBm
14±3 dBm
12±4 dBm
10±4 dBm
8±4 dBm
6±4 dBm
4±4 dBm
2±5 dBm
0±5 dBm
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2. Specification
2-3. WCDMA General Specification
WCDMA2100
WCDMA1900
WCDMA850
WCDMA900
Freq. Band[MHz]
Uplink/Downlink
ARFCN range
1922~1977
2112~2167
1852~1907
1932~1987
UL:9612~9888
UL:9262~9538
DL:10562~10838
DL:9662~9938
824~849
869~894
UL:4132~4233
DL:4357~4458
880~915
925~960
UL:2712~2863
DL:2937~3088
Tx/Rx spacing
190MHz
80MHz
45MHz
45MHz
Mod. Bit rate/
Bit Period
3.84 Mcps
3.84 Mcps
3.84 Mcps
3.84 Mcps
Time Slot Period/Frame
Period
FrameLength:10ms
Slotlength:0.667ms
FrameLength:10ms
Slotlength:0.667ms
FrameLength:10ms
Slotlength:0.667ms
FrameLength:10ms
Slotlength:0.667ms
Modulation
QPSK/HQPSK
QPSK/HQPSK
QPSK/HQPSK
QPSK/HQPSK
MS Power
24dBm~-50dBm
21dBm~-50dBm
24dBm~-50dBm
24dBm~-50dBm
Power Class
3(max+24dBm)
4(max+21dBm)
3(max+24dBm)
3(max+24dBm)
Sensitivity
-106.7dBm
-106.7dBm
-106.7dBm
-106.7dBm
TDMA Mux
Cell Radius
8
2Km
8
2Km
8
2Km
8
2Km
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2. Specification
2-4. TD-SCDMA General Specification
Freq. Band[MHz]
Uplink/Downlink
ARFCN range
Tx/Rx spacing
TCXO Frequency
Modulation
MS Power
Band34
2010~2025
10054~10121
/
26MHz
Band39
1880~1920
9404~9596
/
26MHz
QPSK/16-QAM
QPSK/16-QAM
-49dBm~ 25dBm
-49dBm~ 25dBm
Power Class
2 (max: 24 +1/-3dBm)
2 (max: 24 +1/-3dBm)
Sensitivity
Cell Radius
In/Output Impedance
-108dBm/1.28MHz
-108dBm/1.28MHz
>10Km
50Ω
>10Km
50Ω
Operating Temperature
-30℃ ~ +60℃
-30℃ ~ +60℃
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.