Samsung SGH-C300 User manual

GSM TELEPHONE
SGH-C300
GSM TELEPHONE CONTENTS
1. Specification
2. Exploded View and Parts list
3. Chart of Troubleshooting
4. Array course control
5. Block Diagrams
6. PCB Diagrams
7. MAIN Electrical Parts List
8. Reference data
9. Safety Precautions
10. Product Function

Contents
1. Specification
1-1. GSM/CDMA General Specification ...........................................................................1-1
1-2. GSM TX power class ...............................................................................................1-2
2. Exploded View and Parts list
2-1. Cellular phone Exploded View ..................................................................................2-1
2-2. Cellular phone Parts list ............................................................................................2-2
2-3. Disassembly ...............................................................................................................2-4
2-4. Assembly ....................................................................................................................2-6
3. Flow Chart of Troubleshooting
3-1. Baseband ....................................................................................................................3-1
3-1-1. Power ON .............................................................................................................3-1
3-1-2. Initial ......................................................................................................................3-5
3-1-3. SIM Part ................................................................................................................3-8
3-1-4. Microphone Part ..................................................................................................3-10
3-1-5. Receiver Part ......................................................................................................3-12
3-1-6. Speaker Part .......................................................................................................3-12
3-2. RF .............................................................................................................................3-15
3-2-1. EGSM Rx ............................................................................................................3-15
3-2-2. DCS Rx ...............................................................................................................3-17
3-2-3. EGSM TX ............................................................................................................3-19
3-2-4. DCS TX ...............................................................................................................3-21
4. Array course control
4-1. Downloading Binary Files ......................................................................................4-2
4-2. Pre-requsite for Downloading ................................................................................4-2
4-3. S/W Downloader Program .....................................................................................4-3
5. Block Diagrams
6. PCB Diagrams

Contents
7. MAIN Electrical Parts List
8. Reference data
8-1. Reference Abbreviate ..............................................................................................8-1
9. Safety Precautions
9-1. Repair Precaution ......................................................................................................9-1
9-2. ESD(Electrostaically Sensitive Devices) Precaution ................................................9-2
10. Product Function

1. Specification
1-1
1-1. GSM General Specification
GSM 900
Phase 1
EGSM 900
Phase 2
DCS1800
Phase 1
Freq. Band[MHz]
Uplink/Downlink
890~915
935~960
880~915
925~960
1710~1785
1805~1880
ARFCN range 1~124 0~124 &
975~1023 512~885
Tx/Rx spacing 45 MHz 45 MHz 95 MHz
Mod. Bit rate/
Bit Period
270.833 Kbps
3.692 us
270.833 Kbps
3.692 us
270.833 Kbps
3.692 us
Time Slot Period/Frame
Period
576.9 us
4.615 ms
576.9 us
4.615 ms
576.9 us
4.615 ms
Modulation 0.3 GMSK 0.3 GMSK 0.3 GMSK
MS Power 33 dBm~13 dBm 33 dBm~5 dBm 30 dBm~0 dBm
Power Class 5pcl~15pcl 5pcl~19pcl 0pcl~15pcl
Sensitivity -102 dBm -102 dBm -100 dBm
TDMA Mux 8 8 8
Cell Radius 35 Km 35 Km 2 Km

Specification
1-2
1-2. GSM TX power class
TX Power
control level GSM900
533±2dBm
631±2dBm
729±2dBm
827±2dBm
925±2dBm
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
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±4 dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm

SAMSUNG Proprietary-Contents may change without notice
2. Exploded View and Parts List
2-1
This Document can not be used without Samsung's authorization
2-1. Cellular phone Exploded View
QFU01
QKP02
QLC01
QKP01
QSP01
QRE02
QAN02
QRE01
QME02
QBA00
QBA01
QIF01
QRF03
QPC01
QMI01
QME01
QMO01
QMP01
QCR05
QCR05
QCR05
QCR06
QAN05
QAR01
QFR01
QFL01
QSC01
QRF01
QHI01 QFR01 QFL01

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Exploded View and Parts List
2-2
This Document can not be used without Samsung's authorization
Design LOC Discription SEC CODE
QAN02 INTENNA-SGHC300 GH42-01026A
QAN05 ASSY MEC-INTENNA CONTACT GH75-08168A
QAR01 AUDIO-RECEIVER 3009-001248
QBA00 PMO-COVER BATT GH72-35005A
QBA01 INNER BATTERY PACK-800MAH,MAIN GH43-02589A
QCR05 SCREW-MACHINE 6001-001478
QCR05 SCREW-MACHINE 6001-001478
QCR05 SCREW-MACHINE 6001-001478
QCR06 SCREW-MACHINE 6001-001155
QFU01 ASSY COVER-SLIDE UPPER GH98-02593A
QKP01 ASSY KEYPAD-MAIN(RUSS/BLK) GH98-03231A
QKP02 ASSY KEYPAD-SUB(OPEN/SIL) GH98-02701A
QLC01 ELA UNIT-SGHC300 LCD MODULE KI GH96-02439A
QME01 UNIT-DOME SHEET (F/K) GH59-03770A
QME02 UNIT-DOME SHEET (N/K) GH59-03769A
QMI01 MICROPHONE-ASSY-SGHC300 GH30-00323A
QMO01 MOTOR-DC 3101-001324
QMP01 PBA MAIN-SGHC300 (PBA MAIN) GH92-03086A
QPC01 MEA-SLIDE FPCB KIT GH97-06882A
QRE02 ASSY BRACKET-REAR GH98-02598A
QRF01 MPR-TAPE SHEET RF GH74-28478A
QSC01 MPR-TAPE COVER SHEET SCREW GH74-28472A
QSP01 SPEAKER 3001-002083
QHI01 ASSY HINGE-SLIDE GH98-02594A
QFL01 ASSY COVER-SLIDE LOWER GH98-02595A
QFR01 ASSY CASE-FRONT GH98-02596A
QRE01 ASSY CASE-REAR GH98-02597A
QRF03 PMO-COVER EAR GH72-35003A
QIF01 PMO-COVER IF GH72-35004A
2-2. Cellular phone Parts list

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Exploded View and Parts List
2-3
This Document can not be used without Samsung's authorization
Discription SEC CODE
BAG PE 6902-000297
ADAPTOR-EU 220V TYPE(BLK) GH44-01334A
LABEL(P)-WATER SOAK GH68-02026A
LABEL(P)-WATER SOAK GH68-02026A
MANUAL-SFC GH68-04336A
LABEL(P)-BARCODE RUSSIA GH68-08494A
MANUAL USERS-EU RUSSIAN GH68-12796A
LABEL(R)-MAIN(SER) GH68-13315B
BOX(P)-UNIT MAIN(SER) GH69-04832B
PMO-COVER SLIDE WINDOW GH72-35006A
RMO-RUBBER CSP GH73-08597A
RMO-RUBBER LCD PBA GH73-08818A
MPR-GASK TAPE GH74-24020A
MPR-TAPE IF COVER GH74-24740A
MPR-GASK TAPE GH74-24796A
MPR-SPONGE INTENNA GH74-28468A
MPR-TAPE SLIDE WINDOW GH74-28470A
MPR-VINYL BOHO WINDOW GH74-28851A
MPR-SPONGE MAIN PCB GH74-29058A
MPR-SPONGE LCD FPCB GH74-29059A
MPR-TAPE ESD GH74-29066A
MPR-TAPE FPCB BACK B GH74-29067A
MPR-SPONGE KEYPAD GH74-29255A
MPR-SPONGE KEYPAD GH74-29255A
MPR-INSU TAPE GH74-29334A
MPR-ELEC TAPE GH74-29335A
MPR-INSU TAPE GH74-29352A
MPR-INSU TAPE GH74-29352A
MPR-SPONGE SPK GH74-29444A
MPR-SPONGE GH74-29579A

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Exploded View and Parts List
2-4
This Document can not be used without Samsung's authorization
2-3. Disassembly
1
43
2
1)Disjoint the REAR screw of 4 points.
※caution
1) Be careful of scratch.
1) After get out the cover of earjack and IF connector
cover, disjoint REAR's lower locker and upper locker
as a picture below.
※caution
1) Be careful of scratch.
1) Disjoint two lockers assembled with PBA.
※caution
1) Be careful of the damage of devices.
1) Remove the green tape on the FPCB with
tweezers.
2) Disjoint the FPCB by desoldering.
※caution
1) Be careful of the FPCB's crack

SAMSUNG Proprietary-Contents may change without notice
Exploded View and Parts List
2-5
This Document can not be used without Samsung's authorization
5
87
6
1) Remove the green tape from the FPCB
2) Disjoint the FPCB with desoldering.
※caution
1) Be careful of the FPCB's crack.
1) Remove the motor with tweezers.
2) Remove the receiver with tweezers.
※caution
1)Be careful of the damages of motor and receiver
wires.
1) Disjoint 6 screws.
※caution
1) Be careful of scratch.
2) Use the '+' screwdriver.
1) Disjoint HINGE ASS'Y as a picture below
※caution
1) Be careful of the damage of FPCB
M1.4*L3.0
M1.4*L3.0
M1.4*L3.5