Samsung GT-C3750 User manual

GSM TELEPHONE
GT-C3750
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

This Service Manual is aproperty of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
Samsung Electronics Co.,Ltd.
2011. 04. Rev.1.0
ⓒ

2. Specification
2-1
2-1. GSM General Specification
GSM900 GSM850 DCS1800 PCS1900
Freq.
Band[MHz]
Uplink/Downlink
880~915
925~960
824.2~848.8
869.2~893.8
1710~1785
1805~1880
1850~1910
1930~1990
ARFCN range 0~124 &
975~1023 128~251 512~885 512~810
Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz
Mod. Bit rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
Time Slot
Period/Frame
Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power Class 5pcl ~ 19pcl 5pcl ~ 19pcl 0pcl ~15
pcl 0pcl ~15 pcl
Sensitivity -102dBm -102dBm -100dBm -100dBm
TDMAMux8888
Cell Radius 35Km 35Km 2Km -

Speclflcation
2-2
TX Power
control level DCS1800 PCS1900
030±2
dBm 30±2 dBm
128±3
dBm 28±3 dBm
226±3
dBm 26±3 dBm
324±2
dBm 24±2 dBm
422±3
dBm 22±3 dBm
520±3
dBm 20±3 dBm
618±3
dBm 18±3 dBm
716±3
dBm 16±3 dBm
814±3
dBm 14±3 dBm
912±4
dBm 12±4 dBm
10 10±4 dBm 10±4 dBm
11 8±4dBm 8±4dBm
12 6±4 dBm 6±4 dBm
13 4±4 dBm 4±4 dBm
14 2±5 dBm 2±5 dBm
15 0±5 dBm 0±5 dBm
TX Power
control level GSM850 GSM900
533±2
dBm 33±2 dBm
631±3
dBm 31±3 dBm
729±2
dBm 29±2 dBm
827±3
dBm 27±3 dBm
925±3
dBm 25±3 dBm
10 23±3 dBm 23±3 dBm
11 21±3 dBm 21±3 dBm
12 19±3 dBm 19±3 dBm
13 17±3 dBm 17±3 dBm
14 15±3 dBm 15±3 dBm
15 13±3 dBm 13±3 dBm
16 11±5 dBm 11±5 dBm
17 9±5 dBm 9±5 dBm
18 7±5 dBm 7±5 dBm
19 5±5 dBm 5±5 dBm
2-2. GSM TX power class

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3. Operation Instruction and Installation
3-1
This Document can not be used without Samsung's authorization
Main Function
•GPRS Quad Band(850/900/1800/1900)
•EDGE DL only
•2.4”
QVGA LCD (65K color)
•3.2M
CMOS Camera
•BT v2.1+EDR, MicroUSB 2.0, Micro SD(Up to 16G)
•FM Radio Support
•MP3 Player
•3.5
pi Earjack Support
•SMS, MMS

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6. Level 1Repair
6-1
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6-1. Software Downloading
6-1-1. Pre-requisite for Downloading
•Downloader Program(FlashTool_E2_XMM2150)
•GT-C3750 Mobile Phone
•Data Cable
•JIG BOX (GH99-36900A)
•RF Test Cable (GH39-00985A)
•JIG Cable (GH39-01290A)
•Adapter (GH99-38251A)
•Binary files
Connect to Computer using data cable.

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Level 1Repair
6-2
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6-1-2. S/W Downloader Program
■Load the binary download program by executing the
"FlashTool_E2_XMM2150 "
1.Select the connected serial port and the rate of speed.

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Level 1Repair
6-3
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2.Select communication driver as Infineon USB driver.

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Level 1Repair
6-4
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3.Select the Binary in sequence of _psi, _slb, _BSY, _CDS, _CSC. (If you click
custom order, it can be reorder as in sequence)

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Level 1Repair
6-5
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4.P
ress the "Next" button.