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.
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.
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 CDMA GPS
Tx Freq. range
Rx Freq. range 869.025~893.985MHz 1575.42MHz
Channel Bandwidth 1.23MHz 2MHz
Channel Spacing 30KHz Not Used
Number of Channel 832 1
Duplex Separation 45MHz -
In/Output Impedance
Tx Local Frequency
Rx Local Frequency
TCXO Frequency 26MHz 26MHz
824.025~848.985MHz -
50Ohm 50Ohm
FTx * 1.6666
FRx * 2
FRx * 2
-
Freq. Stability
Operating Temperature
(FRX-45MHz)±300Hz
-30℃ ~ +60℃-30℃ ~ +60℃
-
Confidential and pr oprietary-the content s in this service guide subjec t to change without pri or notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohi bited.
2. Specification
Freq. Band[MHz]
824~849
880~915
1710~1785
1850~1910
0~124 &
576.9us
576.9us
GSM/
33dBm
33dBm
Item GSM 850 EGSM 900 DCS1800 PCS1900
Uplink/Downlink
ARFCN range 128~251
Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz
Mod. Bit rate/
Bit Period
Time Slot Period/
Frame Period
Modulation
MS Power
Power Class 5pcl ~ 19pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Sensitivity -102dBm -102dBm -100dBm -100dBm
TDMA Mux 8 8 8 8
GPRS
869~894
270.833kbps
3.692us
4.615ms
0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK
~5dBm
925~960
975~1023
270.833kbps
3.692us
4.615ms
~5dBm
1805~1880
512~885 512~810
270.833kbps
3.692us
576.9us
4.615ms
30dBm
~0dBm
1930~1990
270.833kbps
3.692us
576.9us
4.615ms
30dBm
~0dBm
Cell Radius 35Km 35Km 2Km 2Km
Confidential and pr oprietary-the content s in this service guide subjec t to change without pri or notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohi bited.
2. Specification
TX Power
TX Power
TX Power
TX Power
2-2. GSM Tx Power Class
control level
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
GSM850
control level
EGSM900
control level
DCS1800
control level
PCS1900
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±3 dBm 17 9±3 dBm 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
Confidential and pr oprietary-the content s in this service guide subjec t to change without pri or notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohi bited.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
Confidential and pr oprietary-the c ontents in this ser vice guide subject to change wi thout prior noti ce
Distribution, transmi ssion, or infringement of any content or data from this document without Samsung’s written authorization is strict ly prohibit ed.
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