GSM TELEPHONE SGH-D428 GSM TELEPHONE CONTENTS 1. Specification 2. Flow Chart of Troubleshooting 3. Exploded Views and Parts List 4. Electrical Parts List 5. Block Diagrams 6.
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. ⓒ Samsung Electronics Co.,Ltd. Dec. 2004 Printed in Korea. Code No.: GH68-06337A BASIC.
1. SGH-D428 Specification 1. GSM General Specification GSM900 Ph ase 1 E G S M 9 00 Ph ase 2 DCS1800 Ph ase 1 PC S1900 Freq. Ban d [M Hz ] Upl in k/Downl in k 89 0~ 91 5 93 5~ 96 0 88 0~ 91 5 92 5~ 96 0 1 71 0~ 1 78 5 1 80 5~ 1 88 0 18 50 ~1 91 0 19 30 ~1 99 0 A RF C N ra n g e 1 ~ 1 24 0 ~ 1 24 & 9 75 ~ 10 23 51 2~8 85 5 12 ~ 8 10 Tx/Rx spaci ng 45 MHz 45 MHz 95 MHz 8 0M H z Mod. Bit rat e/ Bit Period 270.833kbp s 3.692us 2 70 . 8 33 k b ps 3.692us 270.833kbp s 3.692us 27 0.
SGH-D428 Specification 2.
2. SGH-D428 Flow Chart of Troubleshooting 1.Baseband 1. Power ON 'Power On' does not work Yes Check the current consumption more than 100mA No Download again Yes Check the VBAT more than 3.3V No Charge the Battery Yes Check the pin 11 of U102 is more than 2.8V No Check the C117 No U102 pin 9 = 1.8V Yes U102 pin 33,39 = 2.
SGH-D428 Flow Chart of Troubleshooting and Circuit Diagrams 2. Initial Initial Failure Yes Check the signal at the pin 21 of U102 is "High" when the phone is boot on No Check the pin 46,20 and Q103 Yes No Check the key metrix of the U601 Check the key program and the key pcb Yes No Check the VCCD,VCC_1.8A of U601 Check the soldered status of U601, OSC601 Yes Check the soldered status of No Check the vccd of U601 is around 2.
SGH-D428 Flow Chart of Troubleshooting and Circuit Diagrams 4. Charging Part Abnormal charging part Yes Check the pin 17, 18 of CN300 is TA_VEXT>4? No Replace TA,Check CN300-1 Yes No Check the pin 2 of U101 is "low"? Check the U101 Yes No Check the pin 3 of Q101 is "low"? Check the Q101 Yes No Check the pin 5 of U101 is "3.2~4.
SGH-D428 Flow Chart of Troubleshooting and Circuit Diagrams 5. Microphone Part Microphone does not work Yes No check the soldered status of microphone. Resolder microphone Yes Check the reference voltage on mic path C411 ≒ 2.5 V No Resolder or change R413,C420,R414,C410,R411,R40 8 Yes No Is microphone ok? Check U701 Yes END 6.
SGH-D428 Flow Chart of Troubleshooting and Circuit Diagrams 2.RF 1. EGSM RX CONTINUOUS RX ON RF INPUT : 62CH NO NORMAL CONDITION catch the channel? AMP : -50dBm CHECK ANT1001,L1002 contact ? YES NO F1001 CHECK pin13 ≥ -65dBm ? C1003, C1006 resolder or change YES NO F1001 CHECK pin1, 2 ≥ -65dBm ? F1001 resolder or change YES NO U1002 CHECK pin20,21 ≥ -65dBm ? C1005,C1006,L1003 resolder or change YES NO U902 pin 26,32: 2.
SGH-D428 Flow Chart of Troubleshooting and Circuit Diagrams 2. DCS RX CONTINUOUS RX ON RF INPUT : 698CH NO NORMAL CONDITION AMP : -50dBm CHECK catch the channel? ANT1001,L1002 contact ? YES NO F1001 CHECK C1008,C1009 resolder or change pin13 ≥ -65dBm ? YES NO F1001 CHECK pin3, 4 ≥ -65dBm ? F1001 resolder or change YES NO U902 CHECK pin21,22 ≥ -65dBm ? C1008,C1009,L1004 resolder or change YES NO U902 pin 26,32: 2.
SGH-D428 Flow Chart of Troubleshooting and Circuit Diagrams 3. PCS RX CONTINUOUS RX ON RF INPUT : 660CH NO NORMAL CONDITION catch the channel? AMP : -50dBm CHECK ANT1001,L1002 contact ? YES NO F1001 CHECK pin13 ≥ -65dBm ? C1012, F1013 resolder or change YES NO F1001,F1002 CHECK pin6 ≥ -65dBm ? F1001,F1002,R1011 resolder or change YES NO U902 CHECK C1012,F1002,C1013,R1011,L1006 pin16, 17 ≥ -65dBm ? resolder or change YES NO U902 pin 26,32: 2.
SGH-D428 Flow Chart of Troubleshooting and Circuit Diagrams 4. EGSM TX F1001 pin 12 : NO about 2~3 U701,U702 CONTINUS TX ON CONDITION check & change TX POWER DAC: 550 CODE APPLIED NO F1001 pin13 : 2.8 V? CH : 62 YES RBW : 100KHz YES check&change VBW : 100KHz U1001 pin9 : F1003, C1003 SPAN : 10MHz about 4~5dBm? NO REF LEV. : 10dBm YES ATT. : 20dB F1001,C1015 check & change NO U1001 BATTERY, U102 pin 5 : 3.7 V? check & change YES NO U1001 U701 pin 6 : 1.
SGH-D428 Flow Chart of Troubleshooting and Circuit Diagrams 5. DCS/PCS TX F1001 pin 10 : NO about 2~3 NO F1001 CONTINUOUS TX ON CONDITION U701,U703,U704 pin9 : 2.8 V? CH : 698CH(DCS),660CH(PCS) check & change TX POWER CODE: 350 CODE Aplied YES RBW : 100KHz YES VBW : 100KHz U1001 pin11 : F1003, C1003 NO check&change SPAN : 10MHz about 4~5dBm? REF LEV. : 10dBm YES ATT. : 20dB F1001 check & change NO U1001 BATTERY, U102 pin 4,5 : 3.
SGH-D428 Flow Chart of Troubleshooting and Circuit Diagrams CAM_D(1) CAM_D(4) CAM_D(6) CAM_D(2) OUT 1 KEY_COL(2) KEY_COL(1) KEY_COL(0) 5 OUT OUT 6 OUT 8 7 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 R157 R158 R159 9 F104 8 OUT 7 OUT 6 OUT 5 OUT CM_CLK HREF SDA C134 NC 4 3 ZD101 C101 330PF C100 2.
2-11 This Document can not be used without Samsung's authorization SAMSUNG Proprietary-Contents may change without notice F E D C TA_VEXT 1 KEY_ROW(0) KEY_COL(3) PWR_KEEP PWR_ON 2 3 R112 10K Q103 1 1 2 3 KEY_BL2 KEY_BL R106 330K Q104 23 XOENA EN_VRF EN_VPAC UP_SCLK UP_CS UP_SDI JIG_ON RTCALARM TA_VEXT SIMRST SIMCLK SIMDATA C119 1UF CHG_DET D103 R114 R116 NC 3.
F E D C B KEY_ROW(0:5) KEY_COL(0:3) 1 KEY_ROW(5) KEY_ROW(4) KEY_ROW(3) KEY_ROW(2) KEY_ROW(1) KEY_ROW(0) KEY_COL(0 ) KEY_COL(1 ) KEY_COL(2 ) KEY_COL(3 ) CAM_D(7) CAM_D(5) 7 12 KEYPAD 12 KEYPAD 4 1 KEYPAD 12 ZD201 12 KEYPAD 8 5 KEYPAD 2 IN 1 2 IN 4 IN 3 IN KEYPAD 12 1 PWR_ON RST 2 GND SCL F203 OUT 5 6 OUT OUT 7 OUT 8 7 CAM_D(3) 8 CAM_D(1) 2 C251 6 3 9 12 KEYPAD 12 KEYPAD 12 KEYPAD F208 C252 IN OUT 3 4 2 IN 1 IN IN GND OUT OUT 8 OUT
SGH-D428 Flow Chart of Troubleshooting and Circuit Diagrams A B C D E F 1 1 DEBUG_DTR DLC_DETECT SDS_TXD SDS_RXD DEBUG_TXD DEBUG_RXD DEBUG_CTS DEBUG_RTS DEBUG_DSR DEBUG_RI DEBUG_DCD JIG_ON DAICK DAIRN DAIDO DAIDI R317 NC 2 2 V302 R303 47K 3 C301 100NF C306 10UF 10V 1 34 4 5 ZD303 134 2 5 ZD301 13 2 5 I/F CONNECTOR 5 45 ZD302 R320 1K 1K 1K 1K 1K 1K 1K 1K 1K 1K R304 R305 R306 R318 R319 R321 R322 1K 1K R309 R310 R312 R313 CF BP_VF 6 C305 33PF 6 VBAT C302 100
2-14 This Document can not be used without Samsung's authorization SAMSUNG Proprietary-Contents may change without notice F E D C B 1 AUXOUT AUXIN MICOUT MICIN YMU_SPK1P JIG_SPKP SPK1P AOUTAP C433 R4011 C414 330PF 82K,1% R411 C428 NC R418 47K,1% 1UF 2 2 C439 10NF C429 270PF C419 NC R423 10K R419 18K VCCA R416 3.3K,1% VCCA C412 NC R408 6.8K,1% 100NF C423 2 7 R413 2.2K C435 100NF C404 100NF Q401 R415 1.
2-15 This Document can not be used without Samsung's authorization SAMSUNG Proprietary-Contents may change without notice F E D C B A 1 RST FLASH_RESET 1 C515 NC R520 10K C504 10NF R503 10 R505 NC R506 0 CP_OEN CP_WEN UPPER_BYTE A(0) MEM_RST CP_CSROMEN CP_CSROM2EN VCCD A(1:22) 2 R504 VCC_1.
2-16 This Document can not be used without Samsung's authorization SAMSUNG Proprietary-Contents may change without notice H G F E D C B 1 C605 10NF C606 10NF C601 2 KEY_ROW(0:5) 220NF C607 C602 R605 47K KEY_ROW(5) KEY_ROW(4) KEY_ROW(3) KEY_ROW(2) KEY_ROW(1) KEY_ROW(0) 220NF KEY_COL(0:3) A(21) 33NF D(4) D(5) D(15) D(14) D(13) D(12) D(11) D(10) D(9) D(8) D(7) D(6) A12 A13 M15 M14 M11 N14 B13 F11 E14 D15 B15 C14 A16 A15 B17 C17 D16 F14 G14 G13 G17 J12 K12 K13 K14 L14
2-17 This Document can not be used without Samsung's authorization SAMSUNG Proprietary-Contents may change without notice F E D C B A 1 1 PCS_RX_EN DCS_TX_EN GSM_TX_EN 23 VCCD VCCD VCCD 23 4 1 4 1 4 1 3 8 7 2 1 U704 U703 U702 ZD701 3 5 2 6 3 5 2 6 3 5 2 6 4 5 6 R705 100K R704 100K R701 100K SVC_RED C707 10NF VCCD DSP_RWN DSP_IO RST SVC_BLUE SVC_GREEN C708 33NF DSP_DB(0:15) DSP_AB(0:8) EN_VRF EN_VPAC SYN_EN TX_EN SI_EN CP_INT DSP_INT 10 SVC_RED S
1 2 3 C807 10NF C805 10NF 4 R804 100 X-TAL(13MHz) 5 C804 10NF C801 10NF R803 1.2K R802 1.
2-19 This Document can not be used without Samsung's authorization SAMSUNG Proprietary-Contents may change without notice F E D C B 1 RXIN RXIP RXQN RXQP SERDAT SERCLK SERLE SYN_EN CLK13M_RF C907 22NF 2 VOSC 2 RXQP 3 RXQN 4 RXIP 5 RXIN GND GND 23 24 6 U901 7 VDDC 1 GND XOUT C908 100PF 9 GND C909 22NF TXIP C910 100PF 3 NC SDI SCLK SENB SDO PDNB NC GND VOSC U903 L901 3.
2-20 This Document can not be used without Samsung's authorization SAMSUNG Proprietary-Contents may change without notice F E D C B A 1 DPCS_PAM_IN GSM_PAM_IN C1022 33UF 6.3V R1008 300 R1005 18 R1004 300 R1001 18 C1021 33UF 6.3V 2 TX_EN TX_BAND_SEL C1017 33UF 6.
3. SGH-D428 Exploded View and its Parts list 1.
SGH- D428 Exploded view and its Part list 2. Cellular phone Parts list Location Description NO.
SGH-D428 Exploded view and its Part list 3. Test Jig (GH80-00865A) 3-1. RF Test Cable 3-2. Test Cable (GH39-00090A) 3-3. Serial Cable (GH39-00127A) 3-4. Power Supply Cable 3-5. DATA CABLE (GH39-00201C) 3-6. TA (GH44-00483A):China 3-7.
4. SGH-D428 MAIN Electrical Parts List 1.
SGH-D428 Electrical Parts List SEC CODE SEC CODE Design LOC Design LOC 2007-007142 R606 2203-001405 C909,C911,C912,C913,C914 2007-007197 R113,R116,R206,R208,R209 2203-001405 C915 2007-007200 R702,R703 2203-001598 C103 2007-007308 R607,R608 2203-002443 C414 2007-007313 R408 2203-002668 C1001,C251,C252 2007-007316 R416 2203-005061 C102,C239,C240,C255,C301 2007-007528 R415 2203-005061 C302,C303,C304,C402,C404 2007-007590 R411 2203-005061 C409,C417,C501,C502,C503 2007-008045
SGH-D48 Electrical Parts List SEC CODE Design LOC 2809-001264 OSC801 2901-001260 F201,F202,F203,F204,F208 2904-001410 F1002 2909-001191 F1001 3301-001342 F209,F401,F402,F403,F404 3301-001342 F405,F501 3705-001255 F1003 3708-001982 CN201 3709-001187 CN101 3710-001105 CN205 3710-001673 CN300 3722-001880 CN401 4302-001130 M101 GH09-00025A U601 GH71-01052A ANT1001 4-2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization
SGH-D428 Electrical Parts List 2.
5. SGH-D428 Block Diagrams 1.
SGH-D428 Block Diagrams 2. Base Band Solution Block Diagram CLE1006 SIM Interface GPRS PSC 2106 VC-TCXO-208C3 Power (DC/DC, CHARGER SIM) TRIDENT ACC DSP16000 ARM7 X-TAL 32.
6.
SGH-D428 PCB Diagrams F_WE_1 TDO_1 CN202 LED211 C436 C431 C432 R403 C404 ZD402 R401 F208 C240 F209 CN201 LED201 2 LED206 V206 LED202 V207 LED203 V205 5 8 0 V208 V209 LED208 LED209 V210 F4 9 V215 6-2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization TP201 C243 R221 R223 C244 LED204 C253 3 6 V216 LED207 R222 C241 R225 R224 L201 R226 C242 R220 C441 C444 C437 C426 F404 C425 F204 U401 F3 U202 F201 C4
SGH-D428 PCB Diagrams 2.
SGH-D428 PCB Diagrams MENU SEND LED106 LED105 LEFT OVER INTERNET UNDER CLR LED108 LED107 RIGHT END_PWR STO 6-4 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization
