Samsung SGH-N288 Service Manual Download

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ELECTRONICS

SERVICE

DUAL BAND Mobile
Cellular Phone

SGH-N288

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 trouble shooting

Summary of Contents for SGH-N288

Page 1: ...RVICE DUAL BAND Mobile Cellular Phone SGH N288 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 trouble shooting ...

Page 2: ...Samsung Electronics Co Ltd Printed in Korea 05 2001 Rev 5 1 GH68 02032A ELECTRONICS ...

Page 3: ...CB 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 Base Band 4 2 Main RF 4 2 1 RF Tx Part 4 2 2 RF Rx Part 5 Flow chart of trouble shooting 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 GS...

Page 4: ...ed Views and Parts List 1 1 Main SGH N288 1 2 3 5 6 7 4 8 9 1 1 1 2 1 4 1 5 1 6 1 8 13 1 17 5 17 6 17 7 17 1 17 2 17 3 1 10 1 10 1 1 9 1 3 1 7 1 1 3 1 1 4 1 1 1 1 1 2 1 1 5 1 10 2 1 10 3 13 2 13 4 13 3 10 11 15 16 12 14 19 13 18 21 20 22 23 17 ...

Page 5: ... GH72 02108A 6001 000464 GH42 00092A GH73 00660A GH68 01641A GH43 00303A GH43 00304A FRONT ASSÕY FLIP ASSÕY BADGE FLIP COVER MARGNETIC LABEL FLIP BADGE i FACE KEY VOLUME KEY TOP DUMMY TAPE TOP FRONT COVER HINGE SPEAKER SPONGE SPK WINDOW ASSÕY SPONGE LCD WINDOW LCD TAPE LCD MOBILE CAP KEY MAIN KEY PCB BUZZER RUBBER BUZZER SHEET SUPPORT BUZZER MIC RUBBER SUPPORT MIC SPONGE MIC FRAME KEY SUPPORT LCD ...

Page 6: ...106D GH68 00913B GH68 00913E GH68 00913F GH68 00913G COLOR ITEM FRONT ASSÕY FLIP ASSÕY FRONT COVER FLIP COVER LABEL FLIP L GREY D GREY GH73 00678A GH73 00678B GH73 00660A GH73 00660B GH73 00582A GH73 00582B GH72 02108A GH72 02108B GH42 00092A GH42 00092B COLOR ITEM COVER CONNECTOR REAR CAP EAR JACK LOCKER ANTENNA L GREY D GREY GH75 00933A GH75 00933B GH72 02107A GH72 02107B GH43 00303A GH43 00303B...

Page 7: ...1 4 Exploded Views and Parts List 1 4 Travel Adapter Parts List TYPE SEC CODE REMARK A GH44 00171A CHINA B GH44 00184A EUROPE 1 3 Travel Adapter A B ...

Page 8: ...Exploded Views and Parts List 1 5 Cigar Light Adapter 1 5 1 6 Cigar Light Adapter Parts List DESCRIPTION SEC CODE REMARK Ciger Light Adapter Code GH44 00170A BLACK ...

Page 9: ...Exploded Views and Parts List 1 6 1 7 Test Jig TEST JIG GH80 10508A TEST JIG CABLE GH39 00079A RF JIG CABLE GH39 00089A ...

Page 10: ...Exploded Views and Parts List 1 7 DM CABLE GH39 00080A 1 7 1 Test Jig 8922 or 8960 WIRELESS COMMVNCATIONS TEST SET TEST JIG DC POWER SUPPLY RF JIG CABLE TEST JIG CABLE 232 CABLE ...

Page 11: ...1 8 Exploded Views and Parts List 1 8 Wearable EAR Microphone Wearable EAR Microphone GH59 00168A 1 9 Data Kit DATA KIT GH39 00078A ...

Page 12: ...Exploded Views and Parts List 1 9 1 10 Desk Top Charger DESK TOP CHARGER GH44 00186B ...

Page 13: ...PCB Diagrams 2 1 2 PCB Diagrams 2 1 Main Top ...

Page 14: ...2 2 PCB Diagrams 2 2 Main Bottom ...

Page 15: ...RAMIC CHIP 0 33nF 5 C1608CG1H331JT 19 C226 2203 000679 C CERAMIC CHIP 0 027nF 5 CM05CG270J50AT 20 C227 2203 003054 C CERAMIC CHIP 0 009nF 0 C1005CG1H090CT 21 C237 2203 000679 C CERAMIC CHIP 0 027nF 5 CM05CG270J50AT 22 C238 2203 000679 C CERAMIC CHIP 0 027nF 5 CM05CG270J50AT 23 C239 2203 000812 C CERAMIC CHIP 0 033nF 5 CM05CG330J50AT 24 C300 2203 005061 C CERAMIC CHIP 100nF 80 MCH153F104ZK 25 C400 ...

Page 16: ...7 C638 2203 000233 C CERAMIC CHIP 0 1nF 5 5 CM05CG101J50AT 58 C655 2203 000836 C CERAMIC CHIP 390pF 10 CM05X7R391K50AT 59 C657 2203 000233 C CERAMIC CHIP 0 1nF 5 5 CM05CG101J50AT 60 C658 2203 000233 C CERAMIC CHIP 0 1nF 5 5 CM05CG101J50AT 61 C664 2203 000438 C CERAMIC CHIP 1nF 10 50 CM05X7R102K20AH 62 C670 2203 000438 C CERAMIC CHIP 1nF 10 50 CM05X7R102K20AH 63 C673 2203 000254 C CERAMIC CHIP 10nF...

Page 17: ...5 1 16W D TSR16GJ104V 100 R301 2007 000162 R CHIP 100Kohm 5 1 16W D TSR16GJ104V 101 R302 2007 000148 R CHIP 10Kohm 5 1 16W DA TSR16GJ103 102 R303 2007 000148 R CHIP 10Kohm 5 1 16W DA TSR16GJ103 103 R304 2007 000148 R CHIP 10Kohm 5 1 16W DA TSR16GJ103 104 R305 2007 000148 R CHIP 10Kohm 5 1 16W DA TSR16GJ103 105 R306 2007 000148 R CHIP 10Kohm 5 1 16W DA TSR16GJ103 106 R400 2007 000148 R CHIP 10Kohm ...

Page 18: ... 5 1 16W DA TSR16GJ102V 136 R635 2007 000148 R CHIP 10Kohm 5 1 16W DA TSR16GJ103 137 R636 2007 000141 R CHIP 2 2Kohm 5 1 16W D TSR16GJ222V 138 R637 2007 000148 R CHIP 10Kohm 5 1 16W DA TSR16GJ103 139 R641 2007 000148 R CHIP 10Kohm 5 1 16W DA TSR16GJ103 140 R650 2007 000137 R CHIP 2Kohm 5 1 16W DA TSR16GJ202V 141 R651 2007 007142 R CHIP 10Kohm 1 1 16W DA ERJ2GEF103X 142 R654 2007 007771 R CHIP 0OHM...

Page 19: ...uF 20 6 3V TAJR106M006R 20 C124 2203 005061 C CERAMIC CHIP 100nF 80 MCH153F104ZK 21 C125 2203 005065 C CERAMIC CHIP 1000nF 80 CL10F105ZONC 22 C126 2203 000254 C CERAMIC CHIP 10nF 10 1 CM05X7R103K16AT 23 C127 2203 005065 C CERAMIC CHIP 1000nF 80 CL10F105ZONC 24 C131 2404 001231 C TA CHIP 47uF 20 6 3V G 595D476X06R3A2T 25 C209 2203 000679 C CERAMIC CHIP 0 027nF 5 CM05CG270J50AT 26 C306 2203 005061 C...

Page 20: ...8nF 5 CM05CG080D50AT 62 C605 2203 000278 C CERAMIC CHIP 0 01nF 0 5 CM05CG100D50AT 63 C606 2203 000995 C CERAMIC CHIP 0 047nF 5 CM05CG470J50AT 64 C607 2203 005450 C CERAMIC CHIP 0 0056nF GRM36COG5R6B50PT 65 C609 2203 001259 C CERAMIC CHIP 0 008nF 5 CM05CG080D50AT 66 C612 2203 000438 C CERAMIC CHIP 1nF 10 50 CM05X7R102K20AH 67 C613 2203 000438 C CERAMIC CHIP 1nF 10 50 CM05X7R102K20AH 68 C614 2203 00...

Page 21: ...R561K50PT 104 C674 2203 002525 C CERAMIC CHIP 0 56nF 10 GRM36X7R561K50PT 105 C675 2203 000679 C CERAMIC CHIP 0 027nF 5 CM05CG270J50AT 106 C676 2203 000254 C CERAMIC CHIP 10nF 10 1 CM05X7R103K16AT 107 C677 2203 000233 C CERAMIC CHIP 0 1nF 5 5 CM05CG101J50AT 108 C678 2203 000233 C CERAMIC CHIP 0 1nF 5 5 CM05CG101J50AT 109 C679 2203 000233 C CERAMIC CHIP 0 1nF 5 5 CM05CG101J50AT 110 C681 2203 000233 ...

Page 22: ...INDUCTOR SMD 22nH 5 1x0 HK1005 22NJ T 146 L635 2703 001949 INDUCTOR SMD 4 7nH 10 1 HK1005 4N7K T 147 M100 4302 001119 BATTERY LI 2ND 3V 0 1MAH ML414R TT33 148 OSC500 2801 003856 CRYSTAL SMD 0 032786MHz 2 MC 146 149 Q200 0501 002011 TR SMALL SIGNAL 2SD2114K 2SD2114KT146V 150 Q303 0501 002346 TR SMALL SIGNAL 2SB1427 P 2SB1427 E T100 151 Q500 0501 002011 TR SMALL SIGNAL 2SD2114K 2SD2114KT146V 152 Q60...

Page 23: ...IP 47Kohm 5 1 16W DA TSR16GJ473V 188 R530 2007 002796 R CHIP 510ohm 5 1 16W DA TSR16GJ511V 189 R531 2007 000139 R CHIP 220ohm 5 1 16W DA TSR16GJ221V 190 R538 2007 007981 R CHIP 180Kohm 1 1 16W D ERJ2RKF1803X 191 R541 2007 007488 R CHIP 75Kohm 1 1 16W D RK73H1ETP7502F 192 R542 2007 000170 R CHIP 1Mohm 5 1 16W DA TSR8GJ105V 193 R544 2007 000170 R CHIP 1Mohm 5 1 16W DA TSR8GJ105V 194 R545 2007 000170...

Page 24: ...TOR 2985 LP2985AIBPX 3 0 230 U111 0505 001423 FET SILICON FDG6323L N P FDG6323L 231 U112 1203 002160 IC VOLTAGE REGULATOR 2981 LP2981AIBPX 3 3 232 U303 1203 002127 IC BATTERY 1734 SOT 23 6P LTC1734ES6 4 2 TR 233 U304 1203 001903 IC DC DC CONVERTER 1986 S LTC1986ES6 234 U400 1106 001301 IC SRAM 1337 262Kx16Bit C LRS1337 235 U407 1203 001511 IC RESET 809 SOT 23 3P TCM809RENB713 236 U501 1205 001881 ...

Page 25: ...A 1x0 5x0 VC040214X300 258 V221 1405 001093 VARISTOR 14V 20A 1x0 5x0 VC040214X300 259 V491 1405 001082 VARISTOR 5 6V 20A 1x0 5x0 VC040205X150R 260 V501 1405 001082 VARISTOR 5 6V 20A 1x0 5x0 VC040205X150R 261 V503 1405 001082 VARISTOR 5 6V 20A 1x0 5x0 VC040205X150R 262 V504 1405 001082 VARISTOR 5 6V 20A 1x0 5x0 VC040205X150R 263 V505 1405 001082 VARISTOR 5 6V 20A 1x0 5x0 VC040205X150R 264 ZD202 040...

Page 26: ...V3LDO RTC_3V3 LDO AVcc LDO Vcc LDO Serial Data Interface I O Interface A D Interface AGC AFC PLL DC DC CONVERTER Charging Circuit Li Ion Battery Slim Standard ONE C VIBRATOR SYSTEM CLOCK 13MHz SRAM FLASH EEPROM RTC_CLOCK 32 768KHz KEY_BOARD SIM CARD SPEAKER MIC BB INTERFACE RF INTERFACE Charging Current LCD BUZZER ...

Page 27: ...I Q Mod GSM 270MHz DCS 135MHz Phase Detector Loop filter GSM 270MHz DCS 135MHz VP40575 U501 880 915MHz 1710 1785 MHz Tx Dual VCO U610 Mixer 2 Serial data interface 45MHz 270MHz v 2 GSM 1150 1185MHz DCS 1580 1655MHz IRXP IRXN QRXP QRXN I Q Demo SCLK SDATA AGC_EN bias circuit Mixer 1 RF VCO v 2 Rx SAW filter 540MHz GSM 1150 1185MHz DCS 1575 1650MHz CH 62 947 4MHz CH 698 1842 2MHz CH 62 902 4MHz CH 6...

Page 28: ...XN QTXP QTXN Loop Filter TX VCO U610 Dual PAM U608 APC IC U611 890 915 MHz 1710 1785 MHz Coupler 15 9 4 4 3 3 U607 U609 1 1 13 7 2 540 MHz PCN 1575 1650 MHz Tx GSM 1150 1185 MHz 4 14 11 4 5 38 35 20 19 18 17 30 47 5 1 8 1 4 2 3 2 19 20 Ant S W Control Circuit 3VTX TXEN2 VC1 VC2 VC3 VC3 VC2 VC1 GSM Tx DCS Tx Rx H H H L L L L L L 11 SI4133 MLP28 U612 VCTCXO 13MHz U613 IF VCO 1080MHz PLL1 PLL2 RF VCO...

Page 29: ...MHz Mixer 2 PGA I Q Demod Mixer 1 Mixer 1 LC Filter 45MHz 1 2 30 47 9 16 5 7 3 1 2 8 4 6 4 6 53 54 2 3 49 50 6 8 2 4 40 41 27 SDATA SCLK SYNEN1 46dBm 947 067 MHz 50dBm 1842 467 MHz 47dBm 30dBm 33dBm 38dBm 52dBm 43dBm 9dBm 1172 MHz 9 5dBm 1617 4 MHz GSM 1150 1185 MHz PCN 1580 1655 MHz Rx 8dBm 540 MHz 24 4dBm G 29dBm D 224 933 MHz 31dBm G 35dBm D 22dBm G 25dBm D 45 067 MHz 50dBm G 54dBm D 67 kHz 26 ...

Page 30: ...han 3 2V No Yes Yes Check U100 and the path from VBATT to M100 The node between D100 and M100 3V No Yes U106 pin 1 4 10 3 2V Check the circuit related to U106 No END Yes Check the initial operation U102 U105 pin3 3V Check U102 U105 and related circuit No Check for the clock signal at R646 Check the clock generation circuit related to U613 and Q604 No Yes Yes ...

Page 31: ...T C113 1UF U105 LP2985AIBPX 3 0 GND 1 N C 2 5 RB414_II06N M100 GND 2 1 VCC C128 330NF 1UF C127 100NF C130 C121 6 3V 10UF C100 2 5 ON _OFF VIN 4 3 VOUT 27PF LP2981AIBPX 3 3 U100 1 GND N C 6 3V 10UF C108 10NF C109 C111 N C 2 5 ON _OFF VIN 4 3 VOUT 6 3V 100UF VCC LP2985AIBPX 3 0 U102 1 GND C131 47uF 6 3V C110 10UF 6 3V R100 200 47uH L100 10UF C112 CRS04 TE85L D101 MCL4154 D100 C119 10NF C122 1UF AVCC...

Page 32: ... END No U401 pin 4 H The node between R505 and C509 H RST No Check U407 R509 H BOOT No Resolder R509 Yes Yes R526 H MSIZE No Resolder R526 Yes R528 L EXTPROC No Resolder R528 Yes Replace PBA Check all the other connection by Test S W Check the circuit around LCD Check the circuit around U504 EEPROM and data stored in it ...

Page 33: ...5 4 Flow chart of trouble shooting U108 U407 U401 U400 VCC VCC R505 C509 R509 C526 R400 VCC SIM5V3V SIMPWDN_BOOT F_WP F_WP 6 4 F_BE0 F_BE1 F_VCCW SYSRST GPIO3 GPIO4 DTR1 ...

Page 34: ...ging Part Abnormal charging part Replace TA Check the CN220 pin 1 2 5 2V No Yes Yes Check the U303 pin 3 5 2 V Resolder C209 V208 C316 Yes No U303 pin 4 L Resolder R328 Yes No Resolder components around U303 Check the U303 pin 5 4 2V END Yes No ...

Page 35: ...le shooting LTC1734ESE 4 2FTR R326 2 7k 1 C317 10UF 0 3V R320 82k 1 R323 100k 1 C315 100NF VBATT BAT_VOLT ICHRG 3 2 1 C303 25B1427 E T100 U303 1 CS16 10UF 10V DCVOLT CHG_ON LON Y OFF 2 3 6 5 4 INENSE DRIVE VENSE PROG GND VCC ...

Page 36: ...01 pin3 7 3V Replace U300 Resoldering CN301 and check open connection from U300 to CN301 Yes Yes No No After Power ON Check SIMCLK Signal on CN301 pin 1 in a few second After SIM card insert CN301 pin 2 H SIMRST Replace the PBA Replace the PBA Yes Yes No No Check the circuit around U504 Serial EEPROM and data stored in it Yes Phone can t access SIM card Yes ...

Page 37: ... VOUT 1 LTC1986ES6 U304 VCC C302 10NF 1UF C320 SIMVCC C322 10UF 6 3V 750K R332 ON OFF 5 6 R1 C1 1 R2 V C1 1 2 V C1 2 3 VIN R1 4 FDG6323L U300 C333 100NF 1M R331 R306 10K 6 7 7 8 8 ID1A 6S 2 54SF CN301 1 1 2 2 3 3 4 4 5 5 6 SIMCLK SIMDATA SIMALIM SIM_5V3V SIMPWDN_BOOT SIMRST ...

Page 38: ...er CN211 pin 16 17 Check the connection from CN211 pin 16 17 U502 U503 pin 2 AVCC 3 0V Check the circuit from U501 to U502 U503 Check the circuit related to U105 END Resolder the R525 R527 R530 R531 C553 C532 and C538 Yes No Yes Yes Yes No No Check the Key PCB Replace the Key PCB No Yes ...

Page 39: ...5 10 Flow chart of trouble shooting CN211 17 16 U502 C227 C239 U503 AVCC AVCC C532 C538 R527 R531 R525 R530 U501 ...

Page 40: ...5 11 Flow chart of trouble shooting 5 6 Speaker Part Speaker does not work Modify the SPK pins Check the depression of the SPK pins Is Speaker working Replace the Speaker END No Yes Yes Yes No ...

Page 41: ...nput Check Initial operation Replace the PBA Are the pin 7 8 9 and 10 of CN211 low When one of the keys is pushed one of pin 7 8 9 and 10 of CN211 is high Key PCB is OK Resolder pin 7 8 9 and 10 of CN211 END Replace the Key PCB Yes No Yes Yes Yes No No ...

Page 42: ...Test S W Is there alert wave form on the R539 during alert tone test Is there alert wave form on the Q500 pin 3 during alert tone test U100 pin 3 3 3V Check the circuit related to Q500 END Check the circuit related to U100 Yes No Yes Yes No No Buzzer is ok Change the Buzzer Yes No ...

Page 43: ...5 14 Flow chart of trouble shooting 1 3 Q500 2SD2114KT146V C546 100NF D501 DAN222TL R539 4 7K from IC R543 100K BUZ RTC_3V3 2 1 2 3 ...

Page 44: ...art of trouble shooting 5 15 5 9 Ring Indicator Ring Indicator LED does not work GPO2 by Test S W Q204 pin 2 H Between LED208 and R215 L Check the LED Replace LED208 END Resolder R215 Q204 Yes No Yes Yes No No ...

Page 45: ...5 16 Flow chart of trouble shooting RN1102 2 3 1 Q204 LED208 CL 150YG CD T R215 220 VBATT RI_LIGHT ...

Page 46: ...n the menu Between R211 and R212 H GPO1 by test S W No Yes Yes No Check the circuit related U112 LED209 Pin 1 3 3V LCD backlight on Resolder LED209 or Check Q200 No Yes No LCD BACKLIGHT KEY PCB LED Resolder R211 R212 Q200 pin 1 H No Yes Resolder Q200 Q200 pin 3 L No Yes Yes END Key PCB LED on Resolder CN211 or Replace Key PCB No ...

Page 47: ...heck IF connector resolder Resolder U602 Pin 9 Check VC1 L VC2 L VC3 H Resolder U603 Resolder U605 C695 C629 C625 L630 L613 Resolder U604 L605 L621 L622 L623 Check C601 CH 225MHz C636 540MHz Resolder U612 Resolder U601 C603 C607 C609 L604 U605 Pin 24 25 26 27 Resolder OneC U501 U605 Check U605 Resolder U605 Pin32 33 35 Resolder U501 No No No No No No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes ...

Page 48: ...solder U607 C611 Resolder of Change C646 R613 Resolder or Change U610 At 1080MHz U612 At CH 270MHz Resolder U605 U612 U605 Pin 17 18 19 20 Resolder OneC U501 Check U605 Resolder U605 Pin35 38 Resolder U501 No No No No No No No No No Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Check Ant S W Control Circuit Check U608 VBATT Pin 2 APC OK Resolder or Change U608 Yes Check VBATT or APC Control No ...

Page 49: ...heck IF connector resolder Resolder U602 Pin 16 Check VC1 L VC2 L VC3 H Resolder U603 Resolder U605 L615 L618 L619 C639 C643 C689 Resolder U606 L631 L632 L634 Check C601 CH 225MHz C636 540MHz Resolder U612 Resolder U601 L604 C603 C607 C609 U605 Pin 24 25 26 27 Resolder OneC U501 U605 Check U605 Resolder U605 Pin32 33 35 Resolder U501 No No No No No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Ye...

Page 50: ...U602 Resolder U609 C606 Resolder or Change C647 R614 Resolder U610 At 1080MHz U612 At CH 135MHz Resolder U605 U612 U605 Pin 17 18 19 20 Resolder OneC U501 Check U605 Pin 35 Pin 38 Resolder U605 Pin35 38 Resolder U501 No No No No No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Check Ant S W Control Circuit Check U608 VBATT Pin 2 APC OK Resolder or Change U608 Yes Check VBATT or APC Contro...

Page 51: ...C632 C604 NC C672 560PF R617 10K 1 C637 33PF C646 33PF R624 15K 1 R650 100PF C657 2K 2 2nH L617 C613 1NF 1NF C699 L602 NC C620 1NF R637 10K R611 36K C680 27PF C676 10NF C623 1NF C645 27PF C622 270PF 47PF C661 R654 0 68 R629 SENB 17 VDDD 24 VDDI 11 VDDR XIN 15 6 8nH L618 PWDNB 6 RFLA 5 RFLB 3 RFLC 2 RFLD 10 RFOUT 26 SCLK 27 SDAT 25 GNDR 19 IFLA 20 IFLB 23 IFOUT NC 1 8 NC 14 NC NC 21 13 AUXOUT 29 GN...

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