Mobile Device
SM-G9550 Common
CONTENTS
1. Safety Precautions
2. Specification
3. Product Function
4. Exploded View and Parts list
5. MAIN Electrical Parts List
6. Level 1 Repair
7. Level 2 Repair
8. Level 3 Repair
9. Reference data
Notice: All functionality, features, specifications,
and other product information provided in this
document, including but not limited to, benefits,
design, pricing, components, performance,
availability, and capabiliti-es of the product are
subject to change without notice. Samsung
reserves the right to alter this doc-ument or the
product described herein at anytime, without
obligation to provide notification of such
changes.
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.
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.
2. Specification
2-1. GSM & WCDMA General Specification
GSM850
EGSM 900
DCS1800
PCS1900
WCDMA
2100
WCDMA
1900
WCMDA
850
Freq.
Band[MHz]
Uplink/
Downlink
824.2~848.8
869.2~893.8
876.2~914.8
921.2~959.8
.8
.8
.8
.8
1710.2~1784
1850.2~1909
1922.4~1977
1852.4~1907
1805.2~1879
1930.2~1989
2112.4~2167
1932.4~1987
826.4~846.6
871.4~891.6
.6
.6
UL:
DL:
8
.6
.6
UL:
DL:
9612~9888
10562~1083
9262~9538
4132~4233
9662~9938
4357~4458
UL:
DL:
ARFCN
range
128~251
0~124
& 975~1023
512~885
512~810
Tx/Rx
spacing
45MHz
45MHz
95MHz
80MHz
190MHz
80MHz
45MHz
Mod. Bit
rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
3.84Mcps
3.84Mcps
3.84Mcps
Time Slot
Period/
Frame
Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
FrameLengt
FrameLengt
FrameLengt
h:
10ms
h:
10ms
h:
10ms
Slotlength:
0.667ms
Slotlength:
0.667ms
Slotlength:
0.667ms
Modulation
0.3GMSK
0.3GMSK
0.3GMSK
0.3GMSK QPSK/16QA
M
QPSK/16QA
M
QPSK/16QA
M
MS Power 33dBm~5dB
m
32.5dBm~5d
Bm
29.5dBm~0d
Bm
29.5dBm~0d
Bm
24dBm~
-50dBm
24dBm~
-50dBm
24dBm~
-50dBm
Power Class 5pcl ~ 19pcl 5pcl ~ 19pcl
0pcl ~ 15pcl
0pcl ~ 15pcl
3(max+24dBm) 3(max+24dBm) 3(max+24dBm)
Sensitivity
-102dBm
-102dBm
-100dBm
-100dBm
-106.7dBm
-104.7dBm
-104.7dBm
TDMA Mux
8
8
8
8
-
-
-
Cell Radius
35Km
35Km
35Km
35Km
2Km
2Km
2Km
2. Specification
Freq.
Band[MHz]
Uplink/
Downlink
ARFCN range
WCDMA
900
882.4~912.6
927.4~957.6
TDSCDMA
2000
TDSCDMA
1900
2010 ~ 2025
1880 ~ 1920
UL:
DL:
9262~9538
9662~9938
10050 ~ 10125
9400 ~ 9600
Tx/Rx spacing
45MHz
-
-
Mod. Bit rate/
Bit Period
Time Slot Period/
Frame Period
3.84Mcps
1.28Mcps
1.28Mcps
FrameLength:
10ms
Slotlength:
0.667ms
FrameLength:
10ms
Slotlength:
0.675ms
FrameLength:
10ms
Slotlength:
0.675ms
Modulation
QPSK/16QAM
QPSK/8PSK
QPSK/8PSK
MS Power
24dBm~
-50dBm
24dBm~
-48dBm
24dBm~
-48dBm
Power Class
3(max+24dBm)
2(max+24dBm)
2(max+24dBm)
Sensitivity
-103.7dBm
-107.3dBm
-107.3dBm
TDMA Mux
Cell Radius
-
2Km
-
-
11.25Km
11.25Km
2. Specification
2-2. LTE General Specification
LTE Band1
LTE Band2
LTE Band3
LTE Band4
LTE Band5
Freq.
Band[MHz]
Uplink/
Downlink
ARFCN range
1920~1980
2110~2170
1850~1910
1930~1990
1710~1785
1805~1880
1710~1755
2110~2155
824~849
869~894
UL:
DL:
0~599
UL:
DL:
UL:
DL:
UL:
DL:
UL:
DL:
18000~18599
18600~19199
19200~19949
19950~20399
20400~20649
600~1199
1200~1949
1950~2399
2400~2649
Tx/Rx spacing
190MHz
80MHz
95MHz
400MHz
45MHz
Channel
Bandwidth
5/10/15/20 MHz 1.4/3/5/10/15/20
MHz
1.4/3/5/10/15/20
MHz
1.4/3/5/10/15/20
MHz
1.4/3/5/10 MHz
Modulation
QPSK,16/64QAM QPSK,16/64QAM QPSK,16/64QAM QPSK,16/64QAM QPSK,16/64QAM
MS Power
(MPR)
Sensitivit
(QPSK)
(BW 10MHz)
-35~25.7 dBm
-35~25.7 dBm
-35~25.7 dBm
-35~25.7 dBm
-35~25.7 dBm
-96.3 dBm
-94.3 dBm
-93.3 dBm
-96.3 dBm
-94.3 dBm
Cell Radius
>5Km
>5Km
>5Km
>5Km
>5Km
2. Specification
LTE Band7
LTE Band8
LTE Band12
LTE Band13
LTE Band17
Freq.
Band[MHz]
Uplink/
Downlink
ARFCN range
2500~2570
2620~2690
880~915
925~960
699~716
729~746
777~787
746~756
704~716
734~746
UL:
DL:
2750~3449
UL:
DL:
UL:
DL:
UL:
DL:
UL:
DL:
20750~21449
2712~2863
23010~23179
23180~23279
23730~23849
2937~3088
5010~5179
5180~5279
5730~5849
Tx/Rx spacing
120MHz
45MHz
30MHz
-31MHz
30MHz
Channel
Bandwidth
5/10/15/20 MHz 1.4/3/5/10 MHz
1.4/3/5/10 MHz
5/10 MHz
5/10 MHz
Modulation
QPSK,16/64QAM QPSK,16/64QAM QPSK,16/64QAM QPSK,16/64QAM QPSK,16/64QAM
MS Power
(MPR)
Sensitivit
(QPSK)
(BW 10MHz)
-35~25.7 dBm
-35~25.7 dBm
-35~25.7 dBm
-35~25.7 dBm
-35~25.7 dBm
-94.3 dBm
-93.3 dBm
-93.3 dBm
-93.3 dBm
-93.3 dBm
Cell Radius
>5Km
>5Km
>5Km
>5Km
>5Km