Samsung SGH-D900i service manual.pdf

(3180 KB) Pobierz
GSM TELEPHONE
SGH-D900i
GSM TELEPHONE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
CONTENTS
Safety Precautions
Specification
Operation Instruction and
Installation
Array course control
Exploded View/Disassembly
and Assembly Instructions
MAIN Electrical Parts List
Block Diagrams
PCB Diagrams
Flow Chart of Troubleshooting
Reference data
GSPN (Global Service Partner Network)
Country
North America
Latin America
CIS
Europe
China
Asia
Mideast & Africa
Web Site
service.samsungportal.com
latin.samsungportal.com
cis.samsungportal.com
europe.samsungportal.com
china.samsungportal.com
asia.samsungportal.com
mea.samsungportal.com
This Service Manual is a property of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
ⓒ
Samsung Electronics Co.,Ltd.
2007. 05. Rev.1.0
1. Safety Precautions
1-1. Repair Precaution
●
Repair in Shield Box, during detailed tuning.
Take specially care of tuning or test,
because specificity 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
SAMSUNG Proprietary-Contents may change without notice
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
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
2. Specification
2-1. GSM General Specification
GSM900
Phase 1
Fr eq. Band [MHz]
Uplink/ Downlink
ARFCN ran ge
Tx/Rx spacin g
Mod. Bit rat e
/ Bit Per iod
Time Slot Period
/ Fra me Per iod
Mod ulat ion
MS Power
Power Cl ass
Sensitivity
TDMA M ux
Cell Radius
890~9 15
935~9 60
1~12 4
45MHz
270.8 33kbps
3.69 2us
576. 9us
4 .615ms
0.3G MSK
33dBm~ 5dBm
5pcl ~ 1 9pcl
- 102dBm
8
35Km
EG SM 900
Phase 2
880~ 915
925~ 960
0~ 124 &
975~ 1023
45MHz
270. 833kbps
3.6 92us
576. 9us
4.615 ms
0.3 GMSK
33dBm~5dBm
5pcl ~ 19pcl
- 102dBm
8
35 Km
DCS1 800
Phase 1
1710~1 785
1805~1 880
512~8 85
95MHz
2 70.83 3kbps
3.69 2us
576. 9us
4 .615ms
0.3G MSK
3 0dBm~0 dBm
0pcl ~ 15pcl
- 100dBm
8
2Km
PCS1 900
1850~1 910
1930~1 990
512~8 10
80MHz
270.8 33kbps
3.69 2us
576. 9us
4 .615ms
0.3G M SK
30dBm~ 0dBm
0pcl ~ 15pcl
- 100dBm
8
-
2-1
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin