Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung GSM SGH-T400

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SGH-T400


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                                  DUAL BAND Mobile
        ELECTRONICS
                                  Cellular Phone
                                  SGH-T400




SERVICE                                Manual



DUAL BAND MOBILE CELLULAR PHONE                    CONTENTS
                                     1. Exploded Views and Parts List

                                     2. PCB Diagrams

                                     3. Electrical Parts List

                                     4. Block Diagrams

                                     5. Flow Chart of Troubleshooting and
                                        Circuit Diagrams
    1. Exploded Views and Parts List
         1-1      Main
         1-2      Main Parts List
         1-3      Travel Adapter
         1-4      Travel Adapter Parts List
         1-5      Ciger Light Adapter
         1-6      Ciger Light Adapter Parts List
         1-7      Test Jig
         1-8      EAR Microphone
         1-9      Data Kit
         1-10     Battery Charger

    2. PCB Diagrams
         2-1      Main Top
         2-2      Main Bottom

    3. Electrical Parts List
         3-1      Main Parts List Top
         3-2      Main Parts List Bottom

    4. Block Diagrams
         4-1      Main Baseband
         4-2      Main RF
                  4-2-1 RF Transmit Part
                  4-2-2 RF Receive Part

    5. Flow Chart of Troubleshooting and Circuit Diagrams
         5-1      Power ON
         5-2      Initial
         5-3      Charging Part
         5-4      Sim Part
         5-5      Microphone Part
         5-6      Speaker Part
         5-7      Key Data Input
         5-8      Alert Tone
         5-9      Ring Indicator
         5-10     Back Light
         5-11     GSM Receiver
         5-12     GSM Transmitter
         5-13     DCS Receiver
         5-14     DCS Transmitter



Exploded Views and Parts List                               1-1
1. SGH-T400 Exploded Views and Parts List

1-1 Main




                                                1



                                                2




            10                                 3


                                                          4
            11                                        5



            12                      8
                     13
                                    9                     6
            14

                                                          7
                               16
                    15

       18                 17


      19




             20                           22
                     21




1-2                                     Exploded Views and Parts List
1-2 Main Parts List



 Location            Description                 Remark
                                     SEC CODE
   No.

  1            DUAL WINDOW LCD     GH72-05005A

  2            FOLDER UPPER        GH75-02368A

  3            LCD                 GH96-01231A

  4            SPEAKER             3001-001360

  5            MOTOR               3101-001294

  6            FOLDER LOWER        GH75-02369A

  7            WINDOW LCD          GH72-05004A

  8            SCREW               6001-001429

  9            SCREW CAP           GH74-03025A

  10           FRONT COVER         GH75-02367A

  11           KEYPAD              GH75-02371A

  12           MAIN PBA            GH92-01367A

  13           VOLKEY F-PCB        GH59-00593A

  14           DOME SHEET          GH59-00598A

  15           MIC                 GH59-00611A

  16           CONNECTOR COVER     GH73-01331A

  17           SIDE KEY            GH75-02372A

  18           ANTENNA             GH42-00236A

  19           REAR COVER          GH75-02370A

  20           RF/COVER            GH73-01332A

  21           SCREW               6001-001479

  22           BATTERY             GH43-00662A




Exploded Views and Parts List                             1-3
1-3 Travel Adapter




                         A                            B




                         C                                D




1-4 Travel Adapter Parts List


       TYPE                     SEC CODE            REMARK
         A                      GH44-00171A           CHINA
         B                      GH44-00184A          EUROPE
         C                      GH44-00171C      UNITED KINGDOM
         D                      Gh44-00171E           TAIWAN




1-4                                           Exploded Views and Parts List
1-5 Ciger Light Adapter




1-6 Ciger Light Adapter Parts List


      DESCRIPTION               SEC CODE      REMARK
   Ciger Light Adapter Code     GH44-00170A    BLACK




Exploded Views and Parts List                          1-5
1-7 Test Jig




               TEST JIG     GH80-10508A




           TEST JIG CABLE   GH39-00079A




               RF CABLE     GH39-00182A




1-6                           Exploded Views and Parts List
1-7-1 Test Jig




                                          DC
                                        POWER
                                        SUPPLY


                                       8922 or 8960
                                WIRELESS COMMUNICATIONS
                                        TEST SET




                                                               RF CABLE




                                                  TEST JIG CABLE
           232 CABLE




                Note PC




Exploded Views and Parts List                                             1-7
1-8 Wearable EAR Microphone




        Wearable EAR Microphone   GH59-00394B


1-9 Data Kit




               DATA KIT           GH39-00143B



1-10 Battery Charger




          BATTERY CHARGER         GH44-00279A


1-8                                 Exploded Views and Parts List
2. PCB Diagrams

2-1 Main Top




PCB Diagrams      2-1
2-2 Main Bottom




PCB Diagrams      2-2
3. Electrical Parts List

3-1 Main Parts List Top

 NO Refer           SEC       Part Description                Vendor Part No.
    ence           CODE
  1     D300    0401-001033   DIODE-SWITCHING;MCL4154         MCL4154
  2     D400    0406-001083   DIODE-TVS;ESDA6V1W5             ESDA6V1W5
  3     D314    0407-001007   DIODE-ARRAY;UMN1                UMN1
  4     Q100    0501-000225   TR-SMALL SIGNAL;2SC4617         2SC4617
  5     Q302    0501-002011   TR-SMALL SIGNAL;2SD2114KT146V   2SD2114KT146V
  6     Q305    0502-001201   TR-POWER;ZXT13P20DE6            ZXT13P20DE6
  7     Q103    0504-001049   TR-DIGITAL;DTA114YET1           DTA114YET1
  8     Q101    0504-001058   TR-DIGITAL;RN4985-TE85L         RN4985-TE85L
  9     Q102    0504-001058   TR-DIGITAL;RN4985-TE85L         RN4985-TE85L
  10    Q306    0505-001332   FET-SILICON;FDG6301N            FDG6301N
  11    Q303    0506-001004   TR-ARRAY;UMC5NTL                UMC5NTL
  12    U409    0801-002540   IC-CMOS LOGIC;NC7SZ19P6X        NC7SZ19P6X
  13    U407    1001-001145   IC-ANALOG SWITCH;MAX4599EXT-T   MAX4599EXT-T
  14    U304    1001-001183   IC-ANALOG SWITCH;MAX4684EUB     MAX4684EUB
  15    U106    1201-001889   COMP-SMD;RF3110                 RF3110
  16    U305    1203-002127   IC-BATTERY;LTC1734ES6-4.2#TR    LTC1734ES6-4.2#TR
  17    U405    1203-002187   IC-BATTERY;MAX6326XR26-T        MAX6326XR26-T
  18    U100    1203-002598   COMP-SMD;LP2981AIMX-2.8         LP2981AIMX-2.8
  19    U406    1205-002035   COMP-SMD;VP40578                VP40578
  20    U105    1205-002185   IC-INTERFACE;SI4201-BM          SI4201-BM
  21    U103    1209-001434   IC-PLL/SYNTHESISER;SI4133T-BM   SI4133T-BM
  22    TH1     1404-001256   COMP-SMD;B57231-V2473-J60       B57231-V2473-J60
  23    V302    1405-001018   VARISTOR;VC060314A300R          VC060314A300R
  24    V405    1405-001019   VARISTOR;VC060305A150R          VC060305A150R
  25    V406    1405-001019   VARISTOR;VC060305A150R          VC060305A150R
  26    V301    1405-001082   VARISTOR;VC040205X150R          VC040205X150R
  27    V303    1405-001082   VARISTOR;VC040205X150R          VC040205X150R
  28    V400    1405-001082   VARISTOR;VC040205X150R          VC040205X150R
  29    V403    1405-001082   VARISTOR;VC040205X150R          VC040205X150R
  30    V407    1405-001093   COMP-SMD;AVL 14K 02 200         AVL 14K 02 200
  31    V408    1405-001093   COMP-SMD;AVL 14K 02 200         AVL 14K 02 200
  32    R105    2007-000138   "R-CHIP;100,5%"                 ERJ2GEJ101X
  33    R317    2007-000138   "R-CHIP;100,5%"                 ERJ2GEJ101X
  34    R468    2007-000138   "R-CHIP;100,5%"                 ERJ2GEJ101X
  35    R474    2007-000139   "R-CHIP;220,5%"                 ERJ2GEJ221X
  36    R106    2007-000140   "R-CHIP;1K,5%"                  ERJ2GEJ102X
  37    R300    2007-000140   "R-CHIP;1K,5%"                  ERJ2GEJ102X
  38    R313    2007-000140   "R-CHIP;1K,5%"                  ERJ2GEJ102X
  39    R102    2007-000141   "R-CHIP;2.2K,5%"                ERJ2GEJ222X


Electrical Parts List                                                            3-1
 NO Refer          SEC          Part Description   Vendor Part No.
    ence          CODE
 40   R479      2007-000141   "R-CHIP;2.2K,5%"     ERJ2GEJ222X
 41   R480      2007-000141   "R-CHIP;2.2K,5%"     ERJ2GEJ222X
 42   R335      2007-000143   "R-CHIP;4.7K,5%"     ERJ2GEJ472X
 43   R101      2007-000148   "R-CHIP;10K,5%"      ERJ2GEJ103X
 44    R115     2007-000148   "R-CHIP;10K,5%"      ERJ2GEJ103X
 45    R117     2007-000148   "R-CHIP;10K,5%"      ERJ2GEJ103X
 46   R325      2007-000148   "R-CHIP;10K,5%"      ERJ2GEJ103X
 47   R337      2007-000148   "R-CHIP;10K,5%"      ERJ2GEJ103X
 48   R456      2007-000148   "R-CHIP;10K,5%"      ERJ2GEJ103X
 49   R461      2007-000148   "R-CHIP;10K,5%"      ERJ2GEJ103X
 50   R462      2007-000148   "R-CHIP;10K,5%"      ERJ2GEJ103X
 51   R463      2007-000148   "R-CHIP;10K,5%"      ERJ2GEJ103X
 52   R478      2007-000148   "R-CHIP;10K,5%"      ERJ2GEJ103X
 53    R113     2007-000153   "R-CHIP;22K,5%"      ERJ2GEJ223X
 54    R114     2007-000153   "R-CHIP;22K,5%"      ERJ2GEJ223X
 55   R104      2007-000155   "R-CHIP;27K,5%"      ERJ2GEJ273X
 56   R473      2007-000157   "R-CHIP;47K,5%"      ERJ2GEJ473X
 57   R331      2007-000159   "R-CHIP;56K,5%"      ERJ2GEJ563X
 58    R116     2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 59   R314      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 60   R332      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 61   R334      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 62   R336      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 63   R402      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 64   R403      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 65   R405      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 66   "R466,"   2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 67   R467      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 68   R483      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 69   R485      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 70   R488      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 71   R492      2007-000162   "R-CHIP;100K,5%"     RC1005J104CS
 72   R100      2007-001244   "R-CHIP;91K,5%"      RC1005J913CS
 73    R111     2007-001288   "R-CHIP;18,5%"       MCR01MZSJ180
 74    R112     2007-001288   "R-CHIP;18,5%"       MCR01MZSJ180
 75   R107      2007-001298   "R-CHIP;51,5%"       MCR01MZSJ510
 76   R108      2007-001298   "R-CHIP;51,5%"       MCR01MZSJ510
 77   R109      2007-001298   "R-CHIP;51,5%"       MCR01MZSJ510
 78    R110     2007-001298   "R-CHIP;51,5%"       MCR01MZSJ510
 79   R476      2007-001298   "R-CHIP;51,5%"       MCR01MZSJ510
 80   R469      2007-002796   "R-CHIP;510,5%"      MCR01MZSJ511
 81   R472      2007-002796   "R-CHIP;510,5%"      MCR01MZSJ511
 82   R103      2007-002797   "R-CHIP;560,5%"      MCR01MZSJ511



3-2                                                  Electrical Parts List
 NO Refer           SEC        Part Description                  Vendor Part No.
    ence           CODE
  83    R326    2007-003001   "R-CHIP;12,5%"                     RMC16S-120J-TP
  84    R327    2007-003001   "R-CHIP;12,5%"                     RMC16S-120J-TP
  85    R120    2007-007008   "R-CHIP;300,5%"                    MCR01MZSJ301
  86    R121    2007-007008   "R-CHIP;300,5%"                    MCR01MZSJ301
  87    R122    2007-007008   "R-CHIP;300,5%"                    MCR01MZSJ301
  88    R123    2007-007008   "R-CHIP;300,5%"                    MCR01MZSJ301
  89    R307    2007-007009   "R-CHIP;75ohm,5%"                  RC1005J750CS
  90    R450    2007-007317   "R-CHIP;2.2K,1%"                   MCR01MZSF2201
  91    R451    2007-007317   "R-CHIP;2.2K,1%"                   MCR01MZSF2201
  92    R452    2007-007317   "R-CHIP;2.2K,1%"                   MCR01MZSF2201
  93    R453    2007-007317   "R-CHIP;2.2K,1%"                   MCR01MZSF2201
  94    R454    2007-007318   "R-CHIP;1K,1%"                     RK73H1ETP1001F
  95    R455    2007-007318   "R-CHIP;1K,1%"                     RK73H1ETP1001F
  96    R457    2007-007318   "R-CHIP;1K,1%"                     RK73H1ETP1001F
  97    R459    2007-007318   "R-CHIP;1K,1%"                     RK73H1ETP1001F
  98    R118    2007-007771   "R-CHIP;0,5%"                      RC1005J000CS
  99    R119    2007-007771   "R-CHIP;0,5%"                      RC1005J000CS
 100    R319    2007-007771   "R-CHIP;0,5%"                      RC1005J000CS
 101    R410    2007-007771   "R-CHIP;0,5%"                      RC1005J000CS
 102    R475    2007-007771   "R-CHIP;0,5%"                      RC1005J000CS
 103    R477    2007-007771   "R-CHIP;0,5%"                      RC1005J000CS
 104    R481    2007-007771   "R-CHIP;0,5%"                      RC1005J000CS
 105    R484    2007-007771   "R-CHIP;0,5%"                      RC1005J000CS
 106    R490    2007-007771   "R-CHIP;0,5%"                      RC1005J000CS
 107    R491    2007-007771   "R-CHIP;0,5%"                      RC1005J000CS
 108    R342    2007-008117   "R-CHIP;2.7K,1%"                   ERJ2RKF2701X
 109    R489    2011-001345   R-NETWORK;EXB28V103JX              EXB28V103JX
 110    C404    2203-000138   "C-CERAMIC,CHIP;C152K,1.5NF,50V"   CL05B152KBNC
 111    C113    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 112    C114    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 113    C115    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 114    C116    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 115    C117    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 116    C122    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 117    C132    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 118    C134    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 119    C301    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 120    C456    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 121    C458    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 122    C459    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 123    C460    2203-000233   "C-CERAMIC,CHIP;C101J,100PF,50V"   GRP1555C1H101JD01E
 124    C101    2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"    CM05X7R103K16AT
 125    C104    2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"    CM05X7R103K16AT



Electrical Parts List                                                              3-3
 NO Refer        SEC          Part Description                Vendor Part No.
    ence        CODE
 126   C107   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 127   C108   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 128   C109   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 129   C149   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 130   C300   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 131   C303   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 132   C307   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 133   C309   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 134   C313   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 135   C315   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 136   C318   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 137   C453   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 138   C462   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 139   C463   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 140   C470   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 141   C471   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 142   C473   2203-000254   "C-CERAMIC,CHIP;C103K,10NF,16V"   CM05X7R103K16AT
 143   C143   2203-000278   "C-CERAMIC,CHIP;C100D,10PF,50V"   ECUE1H100DCQ
 144   C138   2203-000438   "C-CERAMIC,CHIP;C102K,1NF,50V"    C1005X7R1H102KT
 145   C103   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 146   C136   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 147   C141   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 148   C142   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 149   C146   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 150   C147   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 151   C148   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 152   C320   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 153   C325   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 154   C326   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 155   C406   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 156   C407   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 157   C409   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 158   C410   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 159   C412   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 160   C413   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 161   C414   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 162   C417   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 163   C480   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 164   C489   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 165   C490   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 166   C496   2203-000679   "C-CERAMIC,CHIP;C270J,27PF,50V"   GRP1555C1H270JZ01E
 167   C126   2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"   GRP1555C1H330JZ01E
 168   C127   2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"   GRP1555C1H330JZ01E



3-4                                                             Electrical Parts List
  NO Refer          SEC        Part Description                   Vendor Part No.
     ence          CODE
 169    C133     2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"    GRP1555C1H330JZ01E
 170    C150     2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"    GRP1555C1H330JZ01E
 171    C151     2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"    GRP1555C1H330JZ01E
 172    C451     2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"    GRP1555C1H330JZ01E
 173    C452     2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"    GRP1555C1H330JZ01E
 174    C467     2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"    GRP1555C1H330JZ01E
 175    C468     2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"    GRP1555C1H330JZ01E
 176    C469     2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"    GRP1555C1H330JZ01E
 177    C495     2203-000812   "C-CERAMIC,CHIP;C330J,33PF,50V"    GRP1555C1H330JZ01E
 178    C476     2203-000854   "C-CERAMIC,CHIP;C390J,39PF,50V"    GRP1555C1H330JZ01E
 179    C481     2203-000854   "C-CERAMIC,CHIP;C390J,39PF,50V"    GRP1555C1H330JZ01E
 180    C487     2203-000854   "C-CERAMIC,CHIP;C390J,39PF,50V"    GRP1555C1H330JZ01E
 181    C484     2203-000854   "C-CERAMIC,CHIP;39PF"              GRP1555C1H330JZ01E
 182    C319     2203-000870   "C-CERAMIC,CHIP;C030C,3PF,50V"     GRP1555C1H3R0CZ01E
 183    C477     2203-001017   "C-CERAMIC,CHIP;C040C,4PF,50V"     CM05CG040C50AT
 184    C493     2203-001259   "C-CERAMIC,CHIP;C080D,8PF,50V"     GRP1555C1H8R0DZ01E
 185    C494     2203-001259   "C-CERAMIC,CHIP;C080D,8PF,50V"     GRP1555C1H8R0DZ01E
 186    C110     2203-001405   "C-CERAMIC,CHIP;C223Z,22NF,25V"    CL05F223ZANC
 187    C111     2203-001405   "C-CERAMIC,CHIP;C223Z,22NF,25V"    CL05F223ZANC
 188    C112     2203-001405   "C-CERAMIC,CHIP;C223Z,22NF,25V"    CL05F223ZANC
 189    C118     2203-001405   "C-CERAMIC,CHIP;C223Z,22NF,25V"    CL05F223ZANC
 190    C119     2203-001405   "C-CERAMIC,CHIP;C223Z,22NF,25V"    CL05F223ZANC
 191    C125     2203-001405   "C-CERAMIC,CHIP;C223Z,22NF,25V"    CL05F223ZANC
 192    C128     2203-001405   "C-CERAMIC,CHIP;C223Z,22NF,25V"    CL05F223ZANC
 193    C129     2203-001405   "C-CERAMIC,CHIP;C223Z,22NF,25V"    CL05F223ZANC
 194    C130     2203-001405   "C-CERAMIC,CHIP;C223Z,22NF,25V"    CL05F223ZANC
 195    C474     2203-003054   "C-CERAMIC,CHIP;C090C,9PF,50V"     C1005CG1H090CT
 196    C497     2203-003054   "C-CERAMIC,CHIP;C090C,9PF,50V"     C1005CG1H090CT
 197    C498     2203-003054   "C-CERAMIC,CHIP;C090C,9PF,50V"     C1005CG1H090CT
 198    C123     2203-005050   "C-CERAMIC,CHIP;C1R8C,1.8PF,50V"   ECUW1H1R8CCQ
 199    C124     2203-005050   "C-CERAMIC,CHIP;C1R8C,1.8PF,50V"   ECUW1H1R8CCQ
 200    C316     2203-005061   "C-CERAMIC,CHIP;C104Z,100NF,16V"   MCH153F104ZK
 201    C317     2203-005061   "C-CERAMIC,CHIP;C104Z,100NF,16V"   MCH153F104ZK
 202    C324     2203-005061   "C-CERAMIC,CHIP;C104Z,100NF,16V"   MCH153F104ZK
 203    C332     2203-005061   "C-CERAMIC,CHIP;C104Z,100NF,16V"   MCH153F104ZK
 204    C335     2203-005061   "C-CERAMIC,CHIP;C104Z,100NF,16V"   MCH153F104ZK
 205    C400     2203-005061   "C-CERAMIC,CHIP;C104Z,100NF,16V"   MCH153F104ZK
 206    C100     2203-005065   "C-CERAMIC,CHIP;C105Z,1UF,10V"     C1608Y5V1A105ZT
 207    C106     2203-005065   "C-CERAMIC,CHIP;C105Z,1UF,10V"     C1608Y5V1A105ZT
 208    C310     2203-005065   "C-CERAMIC,CHIP;C105Z,1UF,10V"     C1608Y5V1A105ZT
 209    C120     2203-005234   "C-CERAMIC,CHIP;C1R2C,1.2PF,50V"   GRP1555C1H1R2CZ01E
 210    C121     2203-005234   "C-CERAMIC,CHIP;C1R2C,1.2PF,50V"   GRP1555C1H1R2CZ01E
 211    C475     2203-005382   "C-CERAMIC,CHIP;6PF"               GRM40X7R391K200PT


Electrical Parts List                                                               3-5
 NO    Refer     SEC         Part Description                    Vendor Part No.
       ence      CODE
 212   C483    2203-005382   "C-CERAMIC,CHIP;6PF"                GRM40X7R391K200PT
 213   C140    2203-005444   "C-CERAMIC,CHIP;3PF"                CM05CG3R0B50AH
 214   C491    2203-005444   "C-CERAMIC,CHIP;C030B,3PF,50V"      CM05CG3R0B50AH
 215   C145    2203-005450   "C-CERAMIC,CHIP;C5R6B,5.6PF,50V"    GRP1555C1H5R6BZ01E
 216   C482    2203-005480   "C-CERAMIC,CHIP;C333K,33NF,10V"     GRP155R71A333KA01E
 217   C488    2203-005480   "C-CERAMIC,CHIP;C333K,33NF,10V"     GRP155R71A333KA01E
 218   C492    2203-005481   "C-CERAMIC,CHIP;C473K,47NF,10V"     GRP155R71A473KA01E
 219   C304    2203-005482   "C-CERAMIC,CHIP;C104K,100NF,10V"    GRP155R61A104KA01E
 220   C457    2203-005503   "C-CERAMIC,CHIP;C1801J,180PF,25V"   C1005CG1E181JT
 221   C461    2203-005503   "C-CERAMIC,CHIP;C1801J,180PF,25V"   C1005CG1E181JT
 222   C302    2203-006105   "C-CERAMIC,CHIP;C475K,4.7UF,6.3V"   GRM219R60J475KE11D
 223   C306    2203-006105   "C-CERAMIC,CHIP;C475K,4.7UF,6.3V"   GRM219R60J475KE11D
 224   C308    2203-006105   "C-CERAMIC,CHIP;C475K,4.7UF,6.3V"   GRM219R60J475KE11D
 225   C312    2203-006105   "C-CERAMIC,CHIP;C475K,4.7UF,6.3V"   GRM219R60J475KE11D
 226   C314    2203-006105   "C-CERAMIC,CHIP;C475K,4.7UF,6.3V"   GRM219R60J475KE11D
 227   C102    2404-001105   "C-TA,CHIP;10UF/6.3V"               TESVSP0J106M8RTJ
 228   C105    2404-001105   "C-TA,CHIP;10UF/6.3V"               TESVSP0J106M8RTJ
 229   C338    2404-001105   "C-TA,CHIP;10UF/6.3V"               TESVSP0J106M8RTJ
 230   C131    2404-001134   "C-TA,CHIP;100UF/6.3V"              595D107X06R3B2T
 231   C311    2404-001134   "C-TA,CHIP;100UF/6.3V"              595D107X06R3B2T
 232   C485    2404-001162   "C-TA,CHIP;F950G476MAAJZTQ2"        F950G476MAAJZTQ2
 233   C339    2404-001268   "C-TA,CHIP;10UF/10V"                F951A106MPAAQ2
 234   C341    2503-001041   COMP-SMD;CAP_4ARRAY_100PF           W2A43A101KAT2A
 235   L101    2703-001751   INDUCTOR-SMD;LL1005-FH3N9S          LL1005-FH3N9S
 236   L109    2703-001751   INDUCTOR-SMD;LL1005-FH3N9S          LL1005-FH3N9S
 237   L100    2703-001943   INDUCTOR-SMD;HK1005-10NJ-T          HK1005-10NJ-T
 238   L105    2703-002170   INDUCTOR-SMD;CIH05T6N8JNC           CIH05T6N8JNC
 239   L107    2703-002176   INDUCTOR-SMD;CIH05T2N7SNC           CIH05T2N7SNC
 240   L111    2703-002203   INDUCTOR-SMD;CIH05T15NJNC           CIH05T15NJNC
 241   L400    2703-002269   INDUCTOR-SMD;CIH05T56NJNC           CIH05T56NJNC
 242   X1      2801-004025   CRYSTAL-UNIT;FC-255                 FC-255
 243   F401    2901-001234   FILTER-EMI SMD;NFA31GD4704704D      NFA31GD4704704D
 244   F402    2901-001234   FILTER-EMI SMD;NFA31GD4704704D      NFA31GD4704704D
 245   L302    3301-001120   CORE-FERRITE BEAD;BLM21P300SPT      BLM21P300SPT
 246   L401    3301-001362   CORE-FERRITE BEAD;BLM10A102SGPT     BLM10A102SGPT
 247   CN4     3710-001816   CONNECTOR-SOCKET;1004-0018-319      1004-0018-319
 248 EAR500    3722-001715   JACK-PHONE;02-828P0-53BKA           02-828P0-53BKA
 249   C305    4302-001119   BATTERY-LI;RB414II06N               RB414II06N




3-6                                                               Electrical Parts List
3-2 Main Parts List Bottom

 NO    Refer       SEC        Part Description                       Vendor Part No.
       ence       CODE
  1    D313     0406-001083    DIODE-TVS;ESDA6V1W5                   ESDA6V1W5
  2    Q300     0504-001012    TR-DIGITAL;DTC114YE                   DTC114YE
  3    U401     0504-001060    TR-DIGITAL;BCR08PN                    BCR08PN
  4    U402     0504-001060    TR-DIGITAL;BCR08PN                    BCR08PN
  5    Q304     0505-001570    FET-SILICON;SI1865DL                  SI1865DL
  6    Q301     0506-001052    TR-ARRAY;UMH9N-TN                     UMH9N-TN
  7    D301     0601-001543    COMP-SMD;HL500-F01                    HL500-F01
  8    D303     0601-001611    LED;SLS-NNWH102TS                     SLS-NNWH102TS
  9    D304     0601-001611    LED;SLS-NNWH102TS                     SLS-NNWH102TS
 10    D305     0601-001611    LED;SLS-NNWH102TS                     SLS-NNWH102TS
 11    D306     0601-001611    LED;SLS-NNWH102TS                     SLS-NNWH102TS
 12    D308     0601-001611    LED;SLS-NNWH102TS                     SLS-NNWH102TS
 13    D309     0601-001611    LED;SLS-NNWH102TS                     SLS-NNWH102TS
 14    D310     0601-001611    LED;SLS-NNWH102TS                     SLS-NNWH102TS
 15    D307     0601-001611    LED;SLS-NNWH102TS                     SLS-NNWH102TS
 16    D311     0601-001611    LED;SLS-NNWH102TS                     SLS-NNWH102TS
 17    U403     0801-002540    IC-CMOS LOGIC;NC7SZ19P6X              NC7SZ19P6X
 18    U400     1009-001010    IC-HALL EFFECT S/W;A3212ELH-SAMSUNG   A3212ELH-SAMSUNG
 19    U302     1204-001960    IC-MELODY;YMU762 MA-3                 YMU762 MA-3
 20    V401     1405-001019    VARISTOR;VC060305A150R                VC060305A150R
 21    V402     1405-001082    VARISTOR;VC040205X150R                VC040205X150R
 22    V304     1405-001082    VARISTOR;VC040205X150R                VC040205X150R
 23    R315     2007-000138    "R-CHIP;100,5%"                       ERJ2GEJ101X
 24    R316     2007-000138    "R-CHIP;100,5%"                       ERJ2GEJ101X
 25    R465     2007-000148    "R-CHIP;10K,5%"                       ERJ2GEJ103X
 26    R339     2007-000152    "R-CHIP;20K,5%"                       MCR01MZSJ203
 27    R400     2007-000157    "R-CHIP;47K,5%"                       ERJ2GEJ473X
 28    R470     2007-000157    "R-CHIP;47K,5%"                       ERJ2GEJ473X
 29    R338     2007-000157    "R-CHIP;47K,5%"                       ERJ2GEJ473X
 30    R323     2007-000162    "R-CHIP;100K,5%"                      RC1005J104CS
 31    R322     2007-000162    "R-CHIP;100K,5%"                      RC1005J104CS
 32    R408     2007-000162    "R-CHIP;100K,5%"                      RC1005J104CS
 33    R409     2007-000162    "R-CHIP;100K,5%"                      RC1005J104CS
 34    R487     2007-000162    "R-CHIP;100K,5%"                      RC1005J104CS
 35    R458     2007-000162    "R-CHIP;100K,5%"                      RC1005J104CS
 36    R471     2007-000168    "R-CHIP;470K,5%"                      ERJ2GEJ474X
 37    R330     2007-000775    "R-CHIP;33K,5%"                       ERJ2GEJ333X
 38    R343     2007-001244    "R-CHIP;91K,5%"                       RC1005J913CS
 39    R311     2007-001301    "R-CHIP;68,5%"                        ERJ2GEJ680X
 40    R312     2007-001306    "R-CHIP;150,5%"                       MCR01MZSJ151
 41    R328     2007-001325    "R-CHIP;3.3K,5%"                      MCR01MZSJ332



Electrical Parts List                                                                   3-7
NO    Refer     SEC         Part Description           Vendor Part No.
      ence      CODE
 42   R310    2007-007008    "R-CHIP;300,5%"                              MCR01MZSJ301
 43   R308    2007-007009    "R-CHIP;75ohm,5%"                           RC1005J750CS
 44   R309    2007-007009    "R-CHIP;75ohm,5%"                           RC1005J750CS
 45   R301    2007-007009    "R-CHIP;75ohm,5%"                           RC1005J750CS
 46   R302    2007-007009    "R-CHIP;75ohm,5%"                           RC1005J750CS
 47   R303    2007-007009    "R-CHIP;75ohm,5%"                           RC1005J750CS
 48   R304    2007-007009    "R-CHIP;75ohm,5%"                           RC1005J750CS
 49   R305    2007-007009    "R-CHIP;75ohm,5%"                           RC1005J750CS
 50   R306    2007-007009    "R-CHIP;75ohm,5%"                           RC1005J750CS
 51   R344    2007-007090    "R-CHIP;11K,5%"                             RK73K1ETP113J
 52   R341    2007-007107    "R-CHIP;100K,1%"                            RK73H1ETP1003F
 53   R340    2007-007590    "R-CHIP;82K,1%"                             MCR01MZSF8202
 54   R329    2007-007771    "R-CHIP;0,5%"                               RC1005J000CS
 55   R321    2007-007771    "R-CHIP;0,5%"                               RC1005J000CS
 56   R320    2011-001344    COMP-SMD;CRB2A4E101JT                       CRB2A4E101JT
 57   C328    2203-000233    "C-CERAMIC,CHIP;C101J,100PF,50V"            GRP1555C1H101JD01E
 58   C401    2203-000254    "C-CERAMIC,CHIP;C103K,10NF,16V"             CM05X7R103K16AT
 59   C464    2203-000254    "C-CERAMIC,CHIP;C103K,10NF,16V"             CM05X7R103K16AT
 60   C465    2203-000254    "C-CERAMIC,CHIP;C103K,10NF,16V"             CM05X7R103K16AT
 61   C337    2203-000254    "C-CERAMIC,CHIP;C103K,10NF,16V"             CM05X7R103K16AT
 62   C321    2203-000438    "C-CERAMIC,CHIP;C102K,1NF,50V"              C1005X7R1H102KT
 63   C420    2203-000679    "C-CERAMIC,CHIP;C270J,27PF,50V"             GRP1555C1H270JZ01E
 64   C479    2203-000679    "C-CERAMIC,CHIP;C270J,27PF,50V"             GRP1555C1H270JZ01E
 65   C419    2203-000679    "C-CERAMIC,CHIP;C270J,27PF,50V"             GRP1555C1H270JZ01E
 66   C418    2203-000679    "C-CERAMIC,CHIP;C270J,27PF,50V"             GRP1555C1H270JZ01E
 67   C334    2203-000679    "C-CERAMIC,CHIP;C270J,27PF,50V"             GRP1555C1H270JZ01E
 68   C466    2203-000812    "C-CERAMIC,CHIP;C330J,33PF,50V"             GRP1555C1H330JZ01E
 69   C486    2203-000854    "C-CERAMIC,CHIP;C390J,39PF,50V"             GRP1555C1H330JZ01E
 70   C403    2203-002443    "C-CERAMIC,CHIP;C331K,330PF,50V"            GRP155R71H331KD01E
 71   C500    2203-003054    "C-CERAMIC,CHIP;C090C,9PF,50V"              C1005CG1H090CT
 72   C499    2203-003054    "C-CERAMIC,CHIP;C090C,9PF,50V"              C1005CG1H090CT
 73   C323    2203-005061    "C-CERAMIC,CHIP;C104Z,100NF,16V"            MCH153F104ZK
 74   C330    2203-005061    "C-CERAMIC,CHIP;C104Z,100NF,16V"            MCH153F104ZK
 75   C402    2203-005061    "C-CERAMIC,CHIP;C104Z,100NF,16V"            MCH153F104ZK
 76   C333    2203-005061    "C-CERAMIC,CHIP;C104Z,100NF,16V"            MCH153F104ZK
 77   C340    2203-005061    "C-CERAMIC,CHIP;C104Z,100NF,16V"            MCH153F104ZK
 78   C336    2203-005065    "C-CERAMIC,CHIP;C105Z,1UF,10V"              C1608Y5V1A105ZT
 79   C327    2203-005483    "C-CERAMIC,CHIP;C683K,68NF,10V"             GRP155R61A683KA01E
 80   C322    2404-001086    "C-TA,CHIP;4.7UF/6.3V"                      TESVSPOJ475M8RTJ
 81   C329    2404-001086    "C-TA,CHIP;4.7UF/6.3V"                      TESVSPOJ475M8RTJ




3-8                                                                           Electrical Parts List
                                                                             SIM CARD

                  VIBRATOR




Block Diagrams
                                                             BB INTERFACE

                                                              Serial Data     Battery
                               MIC                                             Type
                                                               Interface


                              RECEIVER                             I/O        Battery
                                                                                          4-1 Main Baseband




                                                               Interface      Voltage


                                                                   A/D        Battery
                                                                                                              4. Block Diagrams




                              SPEAKER
                                                               Interface    Temperature



                  MELODY IC
                                         ONE C
                  (40 Poly)

                                                           RF INTERFACE
                 SYSTEM CLOCK
                   (13MHz)
                                                              AFC

                     SRAM                                                     2V8AERO
                  (32M bit)

                                                              PLL
                                                                             2V8RFVCC
                    FLASH
                  (96M bit)               Li-Ion Battery
                                         (Slim,Standard)
                                                                               LVCC



                   EEPROM
                                                                              DVCC2.5
                                            Charging
                  RTC_CLOCK                  Circuit
                 (32.768KHz)
                                                             RTC_2V8
                  KEY_BOARD                                                   AVCC2.5


                     LCD
                                                             RTC_VCC
                                                                              VDD3.0




4-1
4-2
                                                                                                                                                               4-2 Main RF




                                                                         Si4200 (U104)                         Si4201 (U105)
                                     EGSM RX               F101
                                   925~960 MHz
                                 (CH62 : 947.4 MHz)       SAW
                                                                         LNA           PGA         ADC                              PGA     DAC   I
                                                          Filter

                                                                               Mixer




                                                                                                                         Filter
                                                   F100




                                                                                                                        Channel
                                                          SAW
                                                                         LNA           PGA         ADC                              PGA     DAC   Q
                                                          Filter

                                                        DCS RX
                                                    1805~1880 MHz
                                                  (CH698 : 1842.4 MHz)                                          100
                                                                                                                kHz


                    RF              Antenna
                 Conector             S/W                                              Si4133T       (U103)                                       VP40578
                   (CN1)             (U107)

                                                                                             RF           IF                      VCTCXO              (U406)
                                                                                                                                   (U102)
                                                                                             PLL         PLL

                                                        DCS TX
                                                                                                                                                  SDATA
                                                   1710 ~ 1785 MHz
                                                                                                                                                  SCLK
                                                 (CH698 : 1747.4 MHz)                                                                             SENB
                                                    Dual PAM                                                                                      PDNB

                                                   (U106)
                                                                                              PD
                                                                                                                                                  I

                                                                                             LPF                                                  Q
                                 EGSM TX
                              880 ~ 915 MHz
                            (CH62 : 902.4 MHz)




Block Diagrams
Block Diagrams
                                                                            VC1 VC2                                                    Si4133-T      (U103)
                                      Ant. S/W           2.8VTX
                                                                     Tx(GSM) L   H
                                      Control
                                                           TXEN2     Tx(DCS) H   L
                                       Circuit          from U406      Rx    L   L
                                                                                                                               23,24               
                                           VC1    VC2         1                                                                         RF                                            3   VCTCXO
                                                                                                                                                    1279 ~ 1314 MHz
                                                                                                                                                                                                   AFC
                                      2      11                                                                                         PLL                                   7            (U102)   1
                                                                                                                                                    1327 ~ 1402 MHz
                                                                                                                                                                                                                         4-2-1 RF Transmit Part




                                                                                                                                                  
                    RF                Antenna                                                                                                      880~895 MHz : 798 MHz
                              8                                                                                                          IF        895~900 MHz : 790 MHz
                 Conector               S/W
                                                                                                                                        PLL        900~915 MHz : 798 MHz
                   (CN1)               (U107)                                                                                                     
                                                                                                                                                   766 MHz
                                                                                                                                                                                                        PDNB
                                                                                                                                                                                  9
                                                                                                           -6dBm
                                       5            3                                                                                               26,27        -6dBm
                                                                                                            @ 1301.4 MHz (G)
                      EGSM TX                             DCS TX                                           -9dBm                                                  @ 798 MHz
                   880 ~ 915 MHz                     1710 ~ 1785 MHz                                        @ 1364.4 MHz (D)                                     -9dBm
                 (CH62 : 902.4 MHz)                (CH698 : 1747.4 MHz)                                                                                           @ 766 MHz
                                                                                                                               12,13                 9,10
                                                                                                                                                                                                         VP40578

                                                                                                                                                                              31
                                                                                                                                                            /2                                              (U406)
                                                              Dual PAM
                                                             (U106)
                                                                                          1                                                                                   5
                                                                                                                                       PD                                                                   3
                                                        11                                         24                                                                         6                         I
                                                                                                                                                                              7
                                                                                          7                                                                                   8                         Q
                                                                                                                                       LPF
                                                        9                                          25
                                                                                                                                                                                                        BAND Selection
                                                                                                                                                                                                         - GSM : Low
                                                                                                                                                                                                         - DCS : High
                                                                                                        Si4200 (U104)
                                                                                                                                                                                                         SDATA
                                                                                                                                                                                                         SCLK
                                                                                                                                                                                                         SENB

                                                                                         2                                                                                                              Txpower
                                                                                                                                                                                                                  2
                                                                    +VBATT     Txpower
                                                                             from U406
                                                                                                                                                                                                        TXEN2     1
                                                                                      2.8VRFVCC
                                                                                      BAND Selection
                                                                                      VREG




4-3
4-4
                                                                          Si4200 (U104)                                                       Si4201 (U105)
                                                                                                                                  4                                                 5                    1
                                                             -52dBm                                                         1,2
                                                                          LNA                    PGA           ADC                                                      PGA   DAC   4                I
                                                               21,22                                                                  11,12
                                                                                                                                                                                                                 4-2-2 RF Receive Part




                                                                                                                                                                                        -50dBm (G)
                                                                                  Mixer                                                                                                 -54dBm (D)
                                                                                                                                                                                         @ 67 kHz




                                                                                                                                                               Filter
                                                                                                                                                                                    3




                                                                                                                                                              Channel
                                                             -52dBm                                                         1,2
                                        3,4        3,4                    LNA                    PGA           ADC                                                      PGA   DAC   2                Q
                                                               17,18                                                                  11,12
                                         SAW        SAW
                                        Filter     Filter
                                        (F101)     (F100)                                                                                                                                            SDATA
                                                                                                                                               100                                                   SCLK
                                                                                 GSM : /2                                                                                     I/O
                                                                                                                                               kHz                                                   SENB
                                     1              1
                               -51dBm                    -52dBm
                                                                                12,13                              31                          7     14                                              VP40578
                                                                                                                                                                                                      (U406)
                         EGSM RX                               DCS RX
                       925~960 MHz                         1805~1880 MHz
                     (CH62 : 947.4 MHz)                  (CH698 : 1842.4 MHz)
                                                                                        -6dBm
                                                                                         @ 1895.6 MHz (G)
                                                                                        -9dBm                                                                                                        PDNB
                                                                                                                                                                                                             2
                                                                                         @ 1842.3 MHz (D)
                                                                                        23,24                           9
                                         10         1

                        2                                                                       
                                                                                   RF            1849.8 ~ 1919.8 MHz
                      RF                      Antenna                                                                   7                                VCTCXO      1                                  3
                              1                                                    PLL           1804.9 ~ 1879.9 MHz                                                                                 AFC
                   Conector                     S/W                                                                                                            (U102)
                                    8                                                                                                                     3
                     (CN1)                     (U107)
                 - 50dBm                                                        Si4133-T          (U103)
                   @ 947.067 MHz
                 - 50dBm
                   @ 1842.467 MHz




Block Diagrams
5. Flow Chart of Troubleshooting and Circuit Diagrams
5-1 Power ON


                        'POWER ON'does not work


                                          Yes

                        Check the Battery Voltage        No
                                                                        Charge the Battery
                           is more than 3.4V?




                                          Yes

                               The node                  No   Check U300 and the path from +VBATT
                    between D300 and C305 > 2.8 V ?
                                                                            to C305



                                          Yes

                                                         No
                     When the "END" key is pressed,
                                                                         Replace the PBA
                           D314 pin 1> 3.4V ?



                                          Yes

                                                         No
                         U301 pin 1, 2, 9 > 3.4V ?               Check the circuit related to U301




                                          Yes

                                                         No
                          U301 pin 10 = 2.5 V ?                   Check U301 and related circuit



                                          Yes

                                                         No
                                                                Check the clock generation circuit
                    Check for the clock signal at R103
                                                                   (related to U102 and Q100)



                                          Yes

                        Check the initial operation




                                    END




Flow Chart of Troubleshooting and Circuit Diagrams                                                   5-1
5-2   Flow Chart of Troubleshooting and Circuit Diagrams
5-2 Initial




            Initial Failure




       Downloading SW is OK ?
                                      No             After power on,
                                              check and repair the important
       (Is CSROM signal OK ?)
                                                signals of U406 as follows


                     Yes
                                                       The node                No   Check the circuit
                                                 between R456 and C462
                                                                                     related to reset
                                                       = "H" (RST)

                                                                 Yes


                                                                               No
                                                      R461 = "H" (BOOT)              Resolder R461


                                                                 Yes
    Check all the other connection
              by Test S/W
                                                                               No
                                                      R471 = "H" (MSIZE)             Resolder R471


                                                                 Yes
     Check the circuit around LCD

                                                                               No
                                                     R484 = "L" (EXTPROC)            Resolder R484


           Check the circuit
        around U408(EEPROM)
          and data stored in it
                                                         Replace PBA



                 END




Flow Chart of Troubleshooting and Circuit Diagrams                                                      5-3
5-4
                                                                                                  U406                                  U404            VDD3.0


                                                               U302                                                                                         R492
                                                                                                                       U409
                                                                                                         CSROM                         _CE           R491
                                                                           R456                                                              F-VPP                 F_WP
                                                                                         SYSRST

                                                                                  C462
                                                                                                                 VDD3.0


                                                                     VDD3.0                                          R471


                                                                                                         MSIZE                MC_PDN
                                                                    R461



                                                     SIMPWDN_BOOT                        GPIO3




Flow Chart of Troubleshooting and Circuit Diagrams
5-3 Charging Part




                    Abnormal charging part


                                    Yes


                                                     No
             Check the CN4-1 pin 17,18 > 4.9 V ?                  Replace TA




                                    Yes


                                                     No
                Check the U305 pin 3 > 4.9 V ?                  Resolder C339




                                    Yes


                                                     No
                 R342(CHG_ON side) = "L" ?                      Resolder R342




                                    Yes


                                                     No
                                                          Resolder components around
                Check the U305 pin 5   4.2V ?
                                                                      U305



                                    Yes


                              END




Flow Chart of Troubleshooting and Circuit Diagrams                                     5-5
5-6   Flow Chart of Troubleshooting and Circuit Diagrams
5-4 Sim Part




                 Phone can't access SIM card

                                    Yes

                                                     No
                     Q304 pin 4 = 3.0 V ?                 Resolder R338



                                    Yes

                                                     No
                                                          Replace Q304 or
                      Q304 pin 5 = "H" ?
                                                           Replace PBA



                                    Yes

                                                     No
                    Q304 pin 2, 3 = 3.0 V ?                Replace Q304



                                    Yes


                       After Power ON,               No
              Check SIMCLK Signal on CN302 pin 3           Replace PBA
                       in a few second


                                    Yes


                                                     No
                    After SIM card insert,
                 CN302 pin 2 = "H"(SIMRST) ?               Replace PBA



                                    Yes


                Check the circuit around U408
             (Serial EEPROM) and data stored in it




                              END




Flow Chart of Troubleshooting and Circuit Diagrams                          5-7
5-8
                                                                   VDD3.
                                                                       0




                                                                                            Q304
                                                                       5
                                                                                  4                       3
                                                                                      S2             D2

                                                                                  5                       2
                                                                           R338       ON/OFF         D2
                                                                C336       47K                                       C337                                                   R339
                                                                 1UF              6                       1          10NF                                                   20K
                                                                                      R1,C1          R2                                                CN302
                                                                                                                                                    PC-D6-A6-H2.9-S
                                                                                           SI1865D
                                                                                                 L                                              )
                                                                                                                                          (VCCSIM 1 1         6 6     (GND)
                                                                                                              R335                          (RST) 2 2         5 5      (VPP)
                                                                                                                                 SIMRST
                                    



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