Page 1: Table Of Contents
DUAL BAND Mobile Cellular Phone ELECTRONICS SGH-N400 SERVICE Manual DUAL BAND MOBILE CELLULAR PHONE CONTENTS 1. Exploded Views and Parts List 2. PCB Diagrams & Schematic Diagrams 3. Electrical Parts List 4. Block Diagrams 5. Flow Chart of Troubleshooting...
Page 2 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 Auto Antenna Troubleshooting 5-12 RF Troubleshooting 5-13 Tx Troubleshooting 5-14 Rx Troubleshooting SAMSUNG Proprietary-Contents may change without notice...
Page 3: Exploded Views And Parts List
1. Exploded Views and Parts List 1-1 Main SAMSUNG Proprietary-Contents may change without notice...
Page 4: Main Parts List
GH75-01253A(ATL) GH75-01212A(TIM) GH75-01289A(WIN) GH75-01252A(XEC) NAVI-DUMMY-FRONT GH72-02165A HINGE ASS’Y GH75-00350A LED LENS GH72-02161A WINDOW-LCD GH72-02163A SPONGE WINDOW GH74-01104A MAIN-PBA GH92-00940A REAR ASS’Y GH75-00966A REAR COVER GH72-02421A LOCKER MAIN GH72-02422A SPRING LOCKER GH61-00009A EARJACK RUBBER GH73-00608A SAMSUNG Proprietary-Contents may change without notice...
Page 5 BUZZER RUBBER GH73-00602A COVER CONN. GH73-00758C LCD ASSíY GH07-00064A SPEAKER 3001-001231 VOL-KEY GH73-00605A MOTOR GH31-00028A SCREW 6001-000464 INTENNA-MODULE GH75-00802A MAIN-LABEL GH68-02050C MOBILE CAP GH73-00606A SCREW CAP GH73-00607A SCREW 6001-000883 WHIP ANT GH42-00104A BATT. STD GH43-00309A SAMSUNG Proprietary-Contents may change without notice...
Page 6 BUZZER RUBBER GH73-00602A COVER CONN. GH73-00758C LCD ASS’Y GH07-00064A SPEAKER 3001-001231 VOL-KEY GH73-00605A MOTOR GH31-00028A SCREW 6001-000464 INTENNA-MODULE GH75-01117A MAIN-LABEL GH68-02050C MOBILE CAP GH73-00606A SCREW CAP GH73-00607A SCREW 6001-000883 WHIP ANT GH42-00104A BATT. STD GH43-00309A SAMSUNG Proprietary-Contents may change without notice...
Page 7: Travel Adapter
1-3 Travel Adapter TYPE SEC CODE REMARK GH44-00171A CHINA GH44-00184A EUROPE GH44-00171C UNITED KINGDOM GH44-00171E JAPAN SAMSUNG Proprietary-Contents may change without notice...
Page 8: Cigar Light Adapter
1-4 Cigar Light Adapter Cigar Light Adapter GH44-00199A SAMSUNG Proprietary-Contents may change without notice...
Page 9: Simple Hands Free Kit
1-5 Simple Hands Free Kit Simple Hands Free kit CKT046EBE(Model) SEC CODE GH96-00941A SAMSUNG Proprietary-Contents may change without notice...
Page 10: Test Jig
1-6 Test Jig TEST JIG BOX GH80-10508A TEST JIG CABLE GH39-00079A TEST RF CABLE GH39-00090A SAMSUNG Proprietary-Contents may change without notice...
Page 11: Data Kit
1-7 Earphone EARPHONE GH96-00830A 1-8 Data Kit DATA KIT GH39-00078A 1-9 Desk Top Charger DESK TOP CHARGER GH44-00232A SAMSUNG Proprietary-Contents may change without notice...
Page 12: Pcb Diagrams & Schematic Diagrams
Q109 R707 C720 R523 R524 C534 C121 R709 C722 C119 R533 U510 C535 C135 R708 C721 C784 R710 C724 C118 C117 R106 U107 U106 R711 R527 Q508 D509 C725 C789 U105 C726 C124 C120 SAMSUNG Proprietary-Contents may change without notice...
Page 13 R226 R107 R124 R219 R224 R123 U208 Q104 U102 Q107 U101 D105 D104 U209 R227 C138 C140 R122 C109 R228 C139 R121 Q103 C238 C149 BAT100 Q102 C240 C220 C782 C767 R133 C142 C793 SAMSUNG Proprietary-Contents may change without notice...
Page 14 2-2-1 Logic Schematic SAMSUNG Proprietary-Contents may change without notice...
Page 15 2-2-2 Power Schematic SAMSUNG Proprietary-Contents may change without notice...
Page 16: Rf Schematic
2-2-3 RF Schematic SAMSUNG Proprietary-Contents may change without notice...
Page 17: Electrical Parts List
1202-001022 Csop8_w340_L06 TC75W56FU-TE12L U509 1203-001204 sot23-5M LP2981AIM5X-3.3 U102 1203-001285 sot23-5M MIC5205-3.0BM5/TR U105, U108 1203-001454 sot23-5M LP2981AIM5X-3.0 U106 U110 1203-001511 sot_23_R MAX809REUR-T U504 1203-001720 sot23-5M MIC5219-3.0BM5 U107 1203-001701 sot23-5M LP2982AIM5X-3.0 U109 1203-001702 Csop10_w435_L05 MAX1676EUB-T U101 SAMSUNG Proprietary-Contents may change without notice...
Page 18 R508 R515 R533 R535 R544 R547 R553 R563 R580 R581 R582 2007-000168 ALL1005_RES 470K,5% R543 2007-000170 ALL1005_RES 1M,5% R522 R523 R524 R584 2007-000172 ALL1005_RES 10,5% R302 R303 R304 R305 R309 R314 R401 R402 2007-000174 ALL1005_RES 47,5% R223 R405 SAMSUNG Proprietary-Contents may change without notice...
Page 19 C571 C750 C751 C752 2203-000254 ALL1005_CAP C103K,10NF,16V C122 C125 C140 C142 C216 C228 C249 C311 C312 C313 C422 C430 C436 C502 C550 C558 C559 C560 C561 C562 C773 2203-000278 ALL1005_CAP C100D,10PF,50V C144 C214 2203-000311 ALL1005_CAP C121J,120PF,50V C421 SAMSUNG Proprietary-Contents may change without notice...
Page 20: Samsung Proprietary-Contents May Change Without Notice
C304 C307 C310 2203-003054 ALL1005_CAP C090C,9PF,50V C551 C588 2203-005054 ALL1005_CAP C4R7C,4.7PF,50V C415 2203-005061 ALL1005_CAP C104Z,100NF,16V C106 C108 C109 C129 C132 C136 C141 C143 C305 C308 C309 C504 C505 C523 C527 C528 C534 C552 C553 C554 C567 SAMSUNG Proprietary-Contents may change without notice...
Page 21 2703-001748 ALL1005_IND LL1005-FH5N6S L409 L414 2703-001749 ALL1005_IND LL1005-FH1N0S L415 2703-001750 ALL1005_IND LL1005-FH2N2S L302 L408 2703-001751 ALL1005_IND LL1005-FH3N9S L206 2703-001752 ALL1005_IND LL1005-FH39NJ L102 2703-001913 SR1608_IND 0603CS-R22XJBC L422 2703-001943 ALL1005_IND HK1005-10NJ-T L301 2703-001944 ALL1005_IND HK1005-27NK-T L406 SAMSUNG Proprietary-Contents may change without notice...
Page 22 V1 V2 V3 V4 TESTPOINT-p TP59x98 GND RX SIMBOOT TCK TDI 59x98 TDO TMS TRST TX VBATT khrf-SGHN400 sm_lcd34_SGHN400 SGHN400LCD J503 LCD 3001-001231 sm_spk2_w1500h1000 SMT15A014A SPK300 khrf-open R3528_TAN NC, VIBRATOR ANT_MOTOR -10UF/10V khrf-open1005 ALL1005_IND L416 _IND SAMSUNG Proprietary-Contents may change without notice...
Page 23: Block Diagrams
4. Block Diagrams 4-1 Main Base Band SAMSUNG Proprietary-Contents may change without notice...
Page 24: Main Rf
4-2 Main RF SAMSUNG Proprietary-Contents may change without notice...
Page 25: Flow Chart Of Troubleshooting
5. Flow Chart of Troubleshooting 5-1 Power ON SAMSUNG Proprietary-Contents may change without notice...
Page 26 5-2 Initial SAMSUNG Proprietary-Contents may change without notice...
Page 27: Charging Part
5-3 Charging Part SAMSUNG Proprietary-Contents may change without notice...
Page 28: Sim Part
5-4 Sim Part SAMSUNG Proprietary-Contents may change without notice...
Page 29: Microphone Part
5-5 Microphone Part SAMSUNG Proprietary-Contents may change without notice...
Page 30: Speaker Part
5-6 Speaker Part SAMSUNG Proprietary-Contents may change without notice...
Page 31: Key Data Input
5-7 Key Data Input SAMSUNG Proprietary-Contents may change without notice...
Page 32: Alert Tone
5-8 Alert Tone SAMSUNG Proprietary-Contents may change without notice...
Page 33: Ring Indicator
5-9 Ring Indicator SAMSUNG Proprietary-Contents may change without notice...
Page 34: Back Light
5-10 Back Light SAMSUNG Proprietary-Contents may change without notice 5-10...
Page 35: Auto Antenna Troubleshooting
5-11 Auto Antenna Troubleshooting SAMSUNG Proprietary-Contents may change without notice 5-11...
Page 36: Rf Troubleshooting
5-12 RF Troubleshooting SAMSUNG Proprietary-Contents may change without notice 5-12...
Page 37: Tx Troubleshooting
5-13 Tx Troubleshooting SAMSUNG Proprietary-Contents may change without notice 5-13...
Page 38: Rx Troubleshooting
5-14 Rx Troubleshooting SAMSUNG Proprietary-Contents may change without notice 5-14...
Page 39 Samsung Electronics Co.,Ltd. Printed in Korea AUG. 2001 Rev 1.2 GH68-02304A...

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