Samsung GT-E1225F User manual

GSM TELEPHONE
GT-E1225F(E1225T Common)
GSM TELEPHONE CONTENTS
1. Safety Precautions
2. Specification
3. Product Function
4. Exploded View and Parts list
5. MAIN Electrical Parts List
6. Level 1Repair
7. Level 2Repair
8. Level 3Repair
9. Reference data
Notice
All functionality, features, specifications and o
ther product information provided in this docu
ment including, but not limited to, the benefit
s, design, pricing, components, performance,
availability, and capabiliti-es of the product
are subject to change without notice or oblig
ation. Samsung reserves the right to make
changes to this document and the product
described herein, at anytime, without
obligation on Samsung to provide notification
of such change.

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1. Safety Precautions
1-1
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1-1. Repair Precaution
―Repair in Shield Box, during detailed tuning.
Take specially care of tuning or test, because the specification of cellular phone is sensitive for
surrounding interference(RF noise).
―Be careful to use akind of magnetic object or tool, because performance of parts is damaged by
the influence of magnetic force.
―Surely use astandard screwdriver when you disassemble this product, otherwise screw will be
worn away.
―Use athicken twisted wire when you measure level.
Athicken 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 arepair 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.

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Safety Precautions
1-2
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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 acircuit board.

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2. Specification
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2-1
EGSM 900 DCS1800
Freq. Band[MHz]
Uplink/Downlink
880~915
925~960
1710~1785
1805~1880
ARFCN range 0~124 & 975~1023 512~885
Tx/Rx spacing 45MHz 95MHz
Mod. Bit rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
Time Slot Period/Frame
Period
576.9us
4.615ms
576.9us
4.615ms
Modulation 0.3GMSK 0.3GMSK
MS Power 33dBm~5dBm 30dBm~0dBm
Power Class 4
(max +33dBm)
1
(max +30dBm)
Sensitivity -102dBm -100dBm
TDMA Mux 8 8
Cell Radius 35Km 2Km
2-1. GSM General Specification

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Specification
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2-2
TX Power
control level GSM900
533±2
dBm
631±2
dBm
729±2
dBm
827±2
dBm
925±2
dBm
10 23±2 dBm
11 21±2 dBm
12 19±2 dBm
13 17±2 dBm
14 15±2 dBm
15 13±2 dBm
16 11±3 dBm
17 9±3dBm
18 7±3 dBm
19 5±3 dBm
TX Power
control level DCS1800
0 30±3 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±4 dBm
10 10±4 dBm
11 8±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
2-2. GSM TX power class

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3. Operation Instruction and Installation
3-1
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Main Function
•Dual SIM socket (900/1800) - [not dual standby]
•PNX4850
•1.77"
TFT QVGA LCD
•SMS
•SOS Message, Whisper Mode, Fake Call
•40
Polyphonic Melody
•FM Radio,
•LED Torchlight
•3.5
ΦEarjack

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4. Exploded View and Parts List
4-1
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4-1. Cellular phone Exploded View

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Exploded View and Parts List
4-2
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Design LOC Discription SEC CODE
QSP01 SPEAKER 3001-002543
QAR01 AUDIO-RECEIVER 3009-001491
QCR89 SCREW-TAPPING 6002-001428
QMI01 MICROPHONE-ASSY-GT_E1225F GH30-00674A
QMO01 MOTOR DC-SCH-S369 GH31-00392A
QBA01 INNER BATTERY PACK-800MAH,BLK,UNI,MAIN GH43-03241A
QMP01 A/S ASSY-PBA MAIN(TURK) GT-E1225F GH82-05161A
QLC01 ASSY LCD-1.77 QQVGA SCH-B559 ASSY GH96-04327A
QFR01 ASSY CASE-FRONT GH98-16860A
QBC00 ASSY COVER-BATTERY GH98-16862A
QKP01 ASSY KEYPAD-MAIN GH98-16863A
QRE01 ASSY CASE-REAR GH98-16861A
QIF01 PMO COVER-IF V2 GH72-60638A
4-2. Cellular phone Parts list

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5. MAIN Electrical Parts List
5-1
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SEC CODE Design LOC Description
0403-001688 ZD200 DIODE-ZENER
0406-001231 ZD100 DIODE-TVS
0406-001231 ZD302 DIODE-TVS
0406-001231 ZD400 DIODE-TVS
0406-001231 ZD401 DIODE-TVS
0406-001231 ZD402 DIODE-TVS
0406-001231 ZD403 DIODE-TVS
0406-001231 ZD404 DIODE-TVS
0406-001231 ZD405 DIODE-TVS
0406-001267 ZD300 DIODE-TVS
0406-001286 ZD303 DIODE-TVS
0406-001286 ZD406 DIODE-TVS
0406-001361 ZD301 DIODE-TVS
0407-001002 D200 DIODE-ARRAY
0505-002664 TR200 FET
0601-002846 LED300 LED
0601-002846 LED301LED
0601-002846 LED302LED
0601-002846 LED303LED
0601-002941 LED304LED
1001-001610 U101 IC
1001-001635 U400 IC
1001-001664 U200 IC
1003-001440 TR100 IC
1108-000217 UME200 MEMORY
1201-002933 PAM100 PAM
1201-002944 U100 IC
1202-001068 U401 IC
1203-005512 U300 IC
1203-005686 U103 IC
1204-003155 U104 IC
1205-003923 UCP200 IC
1404-001221 TH200 THERMISTOR
2007-000138 R103 R-CHIP
2007-000138 R213 R-CHIP
2007-000138 R400 R-CHIP

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Main Electrical Parts List
5-2
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SEC CODE Design LOC Description
2007-000138 R404 R-CHIP
2007-000139 R301 R-CHIP
2007-000140 R102 R-CHIP
2007-000140 R310 R-CHIP
2007-000140 R311 R-CHIP
2007-000140 R312 R-CHIP
2007-000140 R313 R-CHIP
2007-000141 R300 R-CHIP
2007-000141 R305 R-CHIP
2007-000141 R401 R-CHIP
2007-000141 R402 R-CHIP
2007-000143 R100 R-CHIP
2007-000143 R107 R-CHIP
2007-000143 R108 R-CHIP
2007-000148 R200 R-CHIP
2007-000148 R201 R-CHIP
2007-000151 R117 R-CHIP
2007-000151 R209 R-CHIP
2007-000151 R212 R-CHIP
2007-000162 R110 R-CHIP
2007-000163 R407 R-CHIP
2007-000164 R408 R-CHIP
2007-000170 R403 R-CHIP
2007-000172 R302 R-CHIP
2007-000172 R306 R-CHIP
2007-000172 R307 R-CHIP
2007-000172 R314 R-CHIP
2007-000173 R308 R-CHIP
2007-000173 R309 R-CHIP
2007-001119 R106 R-CHIP
2007-001288 R112 R-CHIP
2007-001298 R303 R-CHIP
2007-001298 R304 R-CHIP
2007-001311 R101 R-CHIP
2007-001333 R104 R-CHIP
2007-001333 R105 R-CHIP