Samsung SGH-C400 User manual

GSM TELEPHONE
SGH-C400
GSM TELEPHONE CONTENTS
1. Safety Precautions
2. Specification
3. Product Function
4. Array course control
5. Exploded View/Disassembly
and Assembly Instructions
6. MAIN Electrical Parts List
7. Block Diagrams
8. PCB Diagrams
9. Flow Chart of Troubleshooting
10. Reference data

Samsung Electronics Co.,Ltd.
2006. 09 Rev.1.0
ⓒ
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.

CONTENTS
1. Safety Precautions
1-1. Repair Precaution ...........................................................................1-1
1-2. ESD(Electrostatically Sensitive Devices) Precaution ...........................1-2
2. Specification
2-1. GSM General Specification ..............................................................2-1
2-2. GSM Tx Power Class ......................................................................2-2
3. Product Function
4. Array course control
4-1. Pre-requsite for Downloading...........................................................4-2
4-2. S/W Downloader Program................................................................4-2
5. Exploded View/Disassembly & Assembly Instructions
5-1. Cellular phone Exploded View.........................................................5-1
5-2. Cellular phone Parts list.................................................................5-2
5-3. Disassembly & Assembly Instructions..............................................5-4
6. MAIN Electrical Parts List
7. Block Diagrams
8. PCB Diagrams

CONTENTS
9. Flow Chart of Troubleshooting
9-1. Pown on.......................................................................................9-1
9-2. Initial............................................................................................9-5
9-3. SIM Part.......................................................................................9-7
9-4. Charging Part................................................................................9-9
9-5. Microphone Part...........................................................................9-12
9-6. Speaker Part...............................................................................9-14
9-7. Camera Part................................................................................9-16
9-8. RF
9-8-1. GSM900 Rx..............................................................................9-20
9-8-2. DCS Rx....................................................................................9-22
9-8-3. PCS Rx....................................................................................9-24
9-8-4. GSM900 Tx..............................................................................9-26
9-8-5. PCS/DCS Tx.............................................................................9-28
10. Reference data

SAMSUNG Proprietary-Contents may change without notice
1.  
1-1
This Document can not be used without Samsung's authorization
  
       
      
          
           
           
          
     
         
            
              
             
     
               
               
         
               
             

SAMSUNG Proprietary-Contents may change without notice
S 
1-2
This Document can not be used without Samsung's authorization
    
              
          
        
             
             
   
          
               
 
                   
         
                  
        

SAMSUNG Proprietary-Contents may change without notice
2. Specification
2-1
This Document can not be used without Samsung's authorization
EGSM 900
Phase 2 DCS 1800 Phase 1 PCS 1900 Phase 1
Freq. Band[MHz]
Uplink/Downlink 880~915 925~960 1710~1785 1805~1880 1850~1910 1930~1960
ARFCN range 975~1023
1~124 512~885 512~810
Tx/Rx spacing 45MHz 95MHz 80MHz
Mod. Bit rate/
Bit Period 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
Modulation 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power Class 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Sensitivity -102dBm -100dBm -100dBm
TDMA Mux 8 8 8
Cell Radius 35Km 2Km 2Km
Operating
Temperature -20°C ~ +50°C
2-1. GSM General Specification

SAMSUNG Proprietary-Contents may change without notice
Specification
2-2
This Document can not be used without Samsung's authorization
2-2. GSM Tx Power Class
TX Power
control level EGSM900
5 33±2 dBm
6 31±2 dBm
7 29±2 dBm
8 27±2 dBm
9 25±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
TX Power
control level PCS1900
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

SAMSUNG Proprietary-Contents may change without notice
3.  
3-1
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 
- Tri Band(900/1800/1900)
-FR+EFR+HR
-GPRSClass10
-16Poly
-Intenna
- SMS,MMS,WAP1.2
- Phonebook 500ea

SAMSUNG Proprietary-Contents may change without notice
Product Function
3-2
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