Samsung GT-S3850 User manual

GSM TELEPHONE
GT-S3850
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 other
product information provided in this document inclu
ding, but not limited to, the benefits, design, pricing,
components, performance, availability, and capabiliti
-es of the product are subject to change without
notice or obligation. 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.
GSM TELEPHONE CONTENTS

SAMSUNG Proprietary-Contents may change without notice
1. Safety Precautions
1-1
This Document can not be used without Samsung's authorization
1-1. Repair Precaution
―Repair in Shield Box, during detailed tuning. Take specially care of tuning or test, because
specipicty 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.

SAMSUNG Proprietary-Contents may change without notice
Safety Precautions
1-2
This Document can not be used without Samsung's authorization
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.

SAMSUNG Proprietary-Contents may change without notice
2. Specification
This Document can not be used without Samsung's authorization
2-1
EGSM900 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
/BitPeriod
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 5~19(class4) 0~15(class1)
Sensitivity -102dBm -100dBm
TDMA Mux 8 8
Cell Radius 35Km 2Km
2-1. GSM General Specification

SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Specification
2-2
TX Power
control level DCS1800
030±3
dBm
128±3
dBm
226±3
dBm
324±3
dBm
422±3
dBm
520±3
dBm
618±3
dBm
716±3
dBm
814±3
dBm
912±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
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±3 dBm
18 7±3 dBm
19 5±3 dBm
2-2. GSM TX power class

SAMSUNG Proprietary-Contents may change without notice
3. Operation Instruction and Installation
3-1
This Document can not be used without Samsung's authorization
Main Function
•GSM 850 MHz, 900 MHz, 1800 MHz, 1900 MHz
•Micro USB 2.0
•3.14” TN QVGA /C-Type Touch
•3.5
pi Earjack
•MicroSD [up to 16GB]
•WiFi/ Bluetooth
•FM Radio
•2M
FF Camera

SAMSUNG Proprietary-Contents may change without notice
4. Exploded View and Parts List
4-1
This Document can not be used without Samsung's authorization
4-1. Cellular phone Exploded View
QFR01
QLC01
QAR01
QCA01
QCR92
QSP01
QME03
QCK02
QRE01
QCR67
QBA01
QBC00
QAN02
QMP01
QCR72
QKP01
QVO01
QMI03

SAMSUNG Proprietary-Contents may change without notice
Exploded View and Parts List
4-2
This Document can not be used without Samsung's authorization
Design LOC Description SEC CODE
QAR01 AUDIO-RECEIVER 3009-001538
QCR72 SCREW-MACHINE 6001-002051
QCR67 SCREW-MACHINE 6001-002083
QCR92 SCREW-MACHINE 6001-002261
QAN02 INTENNA-MAIN (GT-S3850) GH42-02947A
QBA01 INNER BATTERY PACK-1000MAH,BLK,UNI,MAIN GH43-03410A
QCA01 CAMERA MODULE-SF 1/5" 2M SOCKET MODULE GH59-09909A
QME03 TOUCH/PANEL-GT-S3850(BLACK) GH59-10801A
QSP01 MODULE-ENCLOSURE SPK (+ MOT,S/CAN) GH59-10819A
QMP01 A/S ASSY-PBA MAIN (COMM) GH82-05646A
QLC01 ELA MODULE-LCD(GT-S3850) GH96-05062A
QFR01 ASSY CASE-FRONT GH98-19266A
QBC00 ASSY COVER-BATT GH98-19268A
QKP01 ASSY KEYPAD-OPEN GH98-19269A
QRE01 ASSY CASE-REAR GH98-19267A
QVO01 PMO KEY-VOL GH72-62732A
QCK02 PMO KEY-LOCK GH72-62733A
QMI03 ASSY RUBBER-MIC GH98-19625A
4-2. Cellular phone Parts list

SAMSUNG Proprietary-Contents may change without notice
5. MAIN Electrical Parts List
5-5
This Document can not be used without Samsung's authorization
Design LOC SEC CODE Description
ZD600 0403-001688 DIODE-ZENER
D500 0404-001172 DIODE-SCHOTTKY
D100,D101 0404-001504 DIODE-SCHOTTKY
D400,D401,D402 0406-001293 DIODE-TVS
D600 0407-001002 DIODE-ARRAY
Q500 0505-002388 FET-SILICON
U200 0801-003130 IC
U401 1001-001410 IC
U100 1001-001607 IC
U201 1001-001687 IC
UME200 1108-000395 MEMORY
PAM100 1201-003166 IC
U500 1203-006589 IC
PM300 1203-006660 IC;
U102 1205-003868 IC
U101 1205-004113 IC
UCP200 1205-004209 IC
VR200 1404-001221 THERMISTOR
V404 1405-001091 VARISTOR
V401,V402,V403,V408 1405-001298 VARISTOR
V409,V601,V606,V607 1405-001298 VARISTOR
V608 1405-001298 VARISTOR
R216,R227,R404 2007-000138 R-CHIP
R101,R104,R105,R305 2007-000140 R-CHIP
R408,R410 2007-000140 R-CHIP
R207,R208,R225,R226 2007-000141 R-CHIP
R202,R505 2007-000143 R-CHIP
R211,R213,R214,R215 2007-000144 R-CHIP
R304,R502 2007-000148 R-CHIP
R402,R600 2007-000156 R-CHIP
R204 2007-000159 R-CHIP
R106,R107,R108,R217 2007-000162 R-CHIP
R221,R222,R223 2007-000162 R-CHIP
R405,R500 2007-000165 R-CHIP
R303,R601 2007-000169 R-CHIP
R501 2007-000170 R-CHIP

SAMSUNG Proprietary-Contents may change without notice
Main Electrical Parts List
5-2
This Document can not be used without Samsung's authorization
Design LOC SEC CODE Description
R111 2007-000242 R-CHIP
R503 2007-000758 R-CHIP
R205 2007-001244 R-CHIP
R415,R416 2007-001284 R-CHIP
R406,R407 2007-001292 R-CHIP
R413 2007-001319 R-CHIP
R507 2007-001333 R-CHIP
R100,R102 2007-003018 R-CHIP
R504,R508 2007-007014 R-CHIP
R602 2007-007015 R-CHIP
R109,R110 2007-007132 R-CHIP
R200 2007-007193 R-CHIP
R220 2007-007312 R-CHIP
R224 2007-007315 R-CHIP
R206,R209 2007-007981 R-CHIP
R210 2007-008401 R-CHIP
R212 2007-008517 R-CHIP
R420 2007-008564 R-CHIP
C421,C425 2203-000138 C-CERAMIC,CHIP
C134,C236 2203-000233 C-CERAMIC,CHIP
C128,C201,C223,C233 2203-000254 C-CERAMIC,CHIP
C109,C114,C126,C143 2203-000278 C-CERAMIC,CHIP
C152,C153,C235 2203-000278 C-CERAMIC,CHIP
C104,C404,C405,C411 2203-000386 C-CERAMIC,CHIP
C220,C604 2203-000425 C-CERAMIC,CHIP
C137,C140 2203-000438 C-CERAMIC,CHIP
C314,C315 2203-000550 C-CERAMIC,CHIP
C108 2203-000696 C-CERAMIC,CHIP
C149 2203-000714 C-CERAMIC,CHIP
C105,C107,C112,C334 2203-000812 C-CERAMIC,CHIP
C419,C420,C422,C423 2203-000812 C-CERAMIC,CHIP
C424 2203-000812 C-CERAMIC,CHIP
C232 2203-000854 C-CERAMIC,CHIP
C206,C217,C230,C602 2203-000995 C-CERAMIC,CHIP
C609 2203-000995 C-CERAMIC,CHIP
C224 2203-001101 C-CERAMIC,CHIP