DUAL BAND Mobile Cellular Phone ELECTRONICS SGH-A288/SGH-A200 SERVICE DUAL BAND MOBILE CELLULAR PHONE Manual CONTENTS 1. Exploded Views and Parts List 2. PCB Diagrams 3. Electrical Parts List 4. Block Diagrams 5.
5. Flow chart of trouble shooting and Circuit Diagram 5-1 Power ON 'POWER ON'does not work Yes Check the Battery Voltage is more than 3.2V No Charge the Battery Yes The node between D110 and BAT101 = 3V ? No Check U116 and the path from +VBATT to BAT101 Yes No U117 pin 1,4,10 > 3.2V Check the circuit related to U117 Yes No U463 pin 1, 3 = "H"? Check the circuit related to U463 Yes No U463 pin5, 7 = 2.
Flow chart of trouble shooting and Circuit Diagram 5-2 +VBATT LX 9 C203 5 REF _SHDN 6 4 CLSEL BATT 7 GND 8 2 LBI 3 _LBO OUT 10 1 FB U117 C699 R164 L102 DCIN C746 D108 R567 C209 C701 C202 2 D107 5 4 3 1 8 7 6 5 3.
5-2 Initial Initial Failure No U103 pin 4 = "H" ? Check and repair the important signals of U108 as follows Yes The node between R162 and C183 = "H" (RST) No Check U112 Yes No R114 = "H" (BOOT) Resolder R114 Yes Check all the other connection by Test S/W No R673 = "H" (MSIZE) Resolder R673 Yes Check the circuit around LCD No R165 = "L" (EXTPROC) Resolder R165 Check the circuit around U107(EEPROM) and data stored in it Replace PBA END 5-3 Flow chart of trouble shooting and Circuit Diagram
Flow chart of trouble shooting and Circuit Diagram 5-4 SIMPWDN_BOOT R162 VCC R114 U645 C183 GPIO3 SYSRST U108 DTR1 GPIO4 R673 VCC F_WP MSIZE 4 6 F_BE1 F_BE0 F_VCCW U109 R163 Q108 VCC R156 F_WP
5-3 Charging Part Abnormal charging part Yes No Check the CN502 pin 17,18 5.2V ? Replace TA Yes No Check the U639 pin 3 5.2 V ? Resolder C111, L632, C710 Yes No U639 pin 4 = "L" ? Resolder R328 Yes No Check the U639 pin 5 4.
Flow chart of trouble shooting and Circuit Diagram 5-6 DCVOLT C111 L632 C710 3 2 1 VCC GND ISENSE PROG VSENSE DRIVE U639 4 5 6 1 Q303 R328 2 3 R671 R320 L:ON,H:OFF C704 CHG_ON ICHRG BAT_VOLT +VBATT
5-4 Sim Part Phone can't access SIM card Yes No R699 = 2.
Flow chart of trouble shooting and Circuit Diagram 5-8 SIMALIM SIMPWDN_BOOT SIM_5V3V R428 R421 C423 R699 VCC C424 VIN VOUT U649 1 2 5 C1+ GND 4 3 C1- MODE 6 C745 C104 R103 SIM_VCC U101 FDG6323L VIN,R1 3 V.C1-2 2 5 ON/OFF V.
5-5 Microphone Part Microphone does not work Yes Check the connection from CN503 pin 10, 11 No Resolder CN503 pin 10, 11 and ZD109, ZD112 Yes No U113, U115 pin 2 (AVCC) 2.
Flow chart of trouble shooting and Circuit Diagram 5-10 U463 3 AVCC CN503 11 10 AVCC 2 U113 2 U115 ZD109 ZD112 6 5 5 6 R175 R176 R174 R177 AVCC C187 C188 VXI1N VXI1P U108
5-6 Speaker Part Speaker does not work Yes No Resoler J101 J101 pin 2, 3 = short Yes No J101 pin 2, 3, 6 = 1.5V? Replace the PBA Yes No CN 105 pin 22, 23 = 1.
5-7 Key Data Input Check Initial operation Yes Are the pin 19,20,21,22 and 23 of CN503 low? No Replace the PBA Yes When one of the keys is pushed, one of pin 19,20,21,22 and 23 of CN503 is high ? No Resolder pin 19,20,21,22 and 23 of CN503 Yes No Key PCB is OK ? Replace the Key PCB Yes END Flow chart of trouble shooting and Circuit Diagram 5-12
5-8 Alert Tone Abnormal Alert tone Is there alert wave form on the R110 during alert tone test? No ALERT by Test S/W Yes No Is there alert wave form on the Q102 pin 3 during alert tone test? Check the circuit related to Q102 Yes No U116 pin 5 3.
Flow chart of trouble shooting and Circuit Diagram 5-14 From IC R110 R109 1 Q102 2 3 D104 RTC 3V3(From U116 pin5) C102 BUZ- BUZ+
5-9 Ring Indicator Ring Indicator LED does not work No Q101 pin 2 = "H"? GPO2 by Test S/W Yes No Q101 pin 3 = "L"? Replace Q101 Yes No Resolder CN503, LED CN503 pin 3 = "L"? Yes No Key PCB is OK? Replace the Key PCB Yes END 5-15 Flow chart of trouble shooting and Circuit Diagram
KPCB A'SSY RI_LIGHT (From U108) R706 Q101 3 CN503 Flow chart of trouble shooting and Circuit Diagram 5-16
5-10 Back Light Backlight does not work Backlight "ON" mode in the menu? No Select backlight "ON" mode Yes No R141 = "H" ? LCD BACKLIGHT GPO1 by test S/W Yes KEY PCB LED No Check the CN105 pin 17 Check the CN105 pin 17 = "H" ? Yes No LCD backlight on ? Replace EL sheet Yes Resolder R141, R149 No Q107 pin 1 = "H" ? END Yes Resolder Q107 No Q107 pin 3 = "L" ? Yes Resolder CN503 or Replace Key PCB No Key PCB LED on ? Yes END 5-17 Flow chart of trouble shooting and Circuit Diagram
5-11 GSM Receiver Rx On RF input : CH center freq. + 67.7 kHz Amp.
5-12 GSM Transmit Tx On (level : 5) U304 Pin 2 ≥ 30 dBm Yes Resolder J301 No U304 Check VC1 : H VC2 : L VC3 : L Yes Pin 7 ≥ 30 dBm No Yes No Check Ant. S/W, Control Circuit Yes U312 Change or Resolder U304 Resolder U318, C353 Pin 4 ≥ 30 dBm No U312 Pin 1 ≥ 0 dBm Check U312 : +VBATT Pin 2 (APC) OK? Yes No No U200 Pin 6 ≥ 7 dBm Yes Yes Resolder or Change U312 Check +VBATT or APC Control Resolder or Change C698, R335, R364, R366 No U200 Pin 7 ≤ 0.5 V Pin 5 ≥ 2.8 V Pin 3 = 0.5~2.
5-13 DCS Receiver Rx On RF input : CH center freq. + 67.7 kHz Amp.
5-14 DCS Transmit Tx On (level : 0) U304 Pin 2 ≥ 25 dBm Yes Resolder J301 No U304 Check VC1 : L VC2 : H VC3 : L Yes Pin 13 ≥ 25 dBm No No U312 Pin 5 ≥ 25 dBm Yes Yes Change or Resolder U304 Check Ant. S/W, Control Circuit Resolder U318, C364 No U312 Check U312 : +VBATT Pin 2 (APC) OK? Yes Pin 8 ≥ 0 dBm No U200 Pin 10 ≥ 10 dBm No Yes Yes Resolder or Change U312 Check +VBATT or APC Control Resolder or Change C697, C346, R365, R363 No U200 Pin 7 ≥ 2.5 V Pin 5 ≥ 2.8 V Pin 3 = 0.5~2.
SDATA SCLK SYNEN1 3VRF R313 1K C320 10NF 2 1 VT VCC C304 100NF GNDOUT 3 4 R310 1.5K R305 1K C306 10NF C307 1NF C316 100NF R308 1K R311 0 21 20 19 18 17 16 15 1 2 3 14 13 12 11 10 IFLB IFLA GNDD VDDD 9 SI4133-MLP28 U302 22 23 24 25 26 27 NC U301 UMZ1N-TR GNDD XIN C308 100NF R304 6 5 4 L303 27nH PWDNB C305 5.
3VBANDSEL DCSTX GSMTX 3VTXEN1 DCSRX GSMRX 3VRF 3 1 OUT1 2 R667 100 4 6 R666 47 R337 330 8 2.7nH 33PF C697 L619 NC 47PF 33PF R343 0 C627 2 2 C698 5 7 L639 IN 6 OUT2 G3 G2 G1 5 3 1 4 OUT1 F302 B4133 IN 6 OUT2 G3 G2 G1 5 3 1 IN2 OUT2 G1 G2 G3 G4 IN1 F303 B4121 4 OUT1 U603 FAR-G6CH-1G8425-L218 C338 1NF C392 C391 27PF 1UF L630 NC C335 5.6pF C333 100PF OUT2 (DCS) C322 NC L637 2.2nH L638 2.
3VBANDSEL TXEN2 3VTX RXEN1 VC1 DCSTX GSMTX R695 100K 18 R363 62 15 R365 R694 10K 6 5 V.C1-2 6 5 4 R2 FDG6323L FDG6323L R1,C1 ON/OFF V.
5-25 Flow chart of trouble shooting and Circuit Diagram BANDSEL SYSCLKENA 3.3V SYNEN TXEN1 C125 1UF 10NF 10NF C549 10NF C551 C550 R587 VO2 GND MM1448CWFE 2.9V,100mA SW1,50mA 9 10 LDO2 11 7 8 12 6 SW2,80mA 13 5 14 4 3 LDO3 2.9V,100mA LDO1 2.9V,100mA 15 9 10 16 MM1448CYFE NS2 PS2 VO3 16 15 PS5 14 VO5 13 NC 12 VO4 PS4 11 1 8 7 U457 2 0 1 VO1 2 NS1 3 PS1 4 VIN 5 PS3 6 NS3 C124 4.7uF C106 100NF 2 1 2 U443 DTB113ZK U445 DTC114EE/TR 1 3 3 C117 4.
1. Exploded Views and Parts List 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 Main Main Parts List Travel Adapter Travel Adapter Parts List Ciger Light Adapter Ciger Light Adapter Parts List Test Jig Wearable EAR Microphone Data Kit Battery Charger 2. PCB Diagrams 2-1 2-2 Main Top 2-1-1 Main RF Top 2-1-2 Main Base Band Top Main Bottom 2-2-1 Main RF Bottom 2-2-2 Main Base Band Bottom 3. Electrical Parts List 3-1 3-2 Main Parts List Top Main Parts List Bottom 4.
1.
1-2 Main Parts List NO 1 1-1 1-2 1-3 2 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 3 3-1 3-2 3-3 3-4 3-5 3-6 4 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-9 5 5-1 5-2 6 7 8 9 10 11 12 13 1-2 SEC CODE GH75-00925A GH75-00970A GH72-02098A GH72-02174A GH74-00307A GH74-01114A GH75-00926A GH70-00039A GH72-02099A GH74-00309A GH74-00310A GH74-00311A GH74-00312A GH74-00580A GH74-00721A GH74-01240A GH74-01241A GH75-00928A GH75-00924A GH72-00636A GH72-02097A GH72-02394A GH73-00266B GH74-00445A GH74-01296A GH75-00927A GH61-0
NO 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 SEC CODE GH74-00611B GH74-00770A GH74-00979A GH74-01254A GH74-01294A GH74-01295A GH74-01297A GH74-01332A GH74-40518A 6001-000464 GH71-00095A GH72-00602A GH72-00647B GH73-00578A GH73-00579A GH73-00667A GH74-40518A GH68-01684A GH68-01952A GH68-01685A GH42-00076B GH43-00283A GH43-00326A GH43-00305A GH43-00327A GH97-01829A GH97-01924A GH97-01830A GH59-00181A Exploded Views and Parts List DESCRIPTION MPR-SCREW CAP MPR-ESD SHEET MPR-
SGH-A288 COLOR & CODE COLOR WHITE PEARL GOLD SILVER MEC-FOLDER UPPER GH75-00925A GH75-00925B GH75-00925C MEC-FOLDER LOWER GH75-00926A GH75-00926B GH75-00926C MEC-FRONT COVER GH75-00924A GH75-00924B GH75-00924C MEC-REAR COVER GH75-00927A GH75-00927B GH75-00927C MPR-SCREW CAP GH74-00611B GH74-00313H GH74-00313F PMO-SPEAKER COVER GH72-00647B GH72-00647J GH72-00647K ANTENNA-SGHA288 GH42-00076B GH42-00076B GH42-00076B BATTERY-SLIM-SGHA288 GH43-00283A GH43-00283C GH43-00283B BA
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 Exploded Views and Parts List 1-5
1-5 Ciger Light Adapter 1-6 Ciger Light Adapter Parts List 1-6 DESCRIPTION SEC CODE REMARK Ciger Light Adapter Code GH44-00170A BLACK Exploded Views and Parts List
1-7 Test Jig TEST JIG GH80-10508A TEST JIG CABLE GH39-00079A RF JIG CABLE GH39-00093A Exploded Views and Parts List 1-7
DM CABLE GH39-00080A 1-7-1 Test Jig DC POWER SUPPLY 8922 or 8960 WIRELESS COMMVNCATIONS TEST SET RF JIG CABLE C F DE TE ABC O MN ST JKL Z WXY GHI JIG TUV PQRS 232 CABLE TEST JIG CABLE 1-8 Exploded Views and Parts List
1-8 Wearable EAR Microphone DESCRIPTION Wearable EAR Microphone SEC CODE REMARK GH59-00168A SGH-A288 GH59-00168B SGH-A200 1-9 Data Kit DATA KIT Exploded Views and Parts List GH39-00078A 1-9
1-10 Battery Charger DESCRIPTION BATTERY CHAGER 1-10 SEC CODE REMARK GH44-00177A SGH-A288 GH44-00177C SGH-A200 Exploded Views and Parts List
3. Electrical Parts List 3-1 Main Parts List Top SEC CODE Reference Part Description Vendor Part No.
SEC CODE Reference Part Description Vendor Part No.
SEC CODE Reference Part Description Vendor Part No.
SEC CODE Reference Part Description Vendor Part No. 126 C205,C303,C304 2203-005061 C-CERAMIC,CHIP;C104Z,100NF,16V GRM36Y5V104Z16PT 127 C308,C316 2203-005061 C-CERAMIC,CHIP;C104Z,100NF,16V GRM36Y5V104Z16PT 128 C705 2203-005061 C-CERAMIC,CHIP;C104Z,100NF,16V GRM36Y5V104Z16PT 129 C104,C125 2203-005065 C-CERAMIC,CHIP;C105Z,1UF,10V GRM39Y5V105Z10PT 130 C702,C743 2203-005065 C-CERAMIC,CHIP;C105Z,1UF,10V GRM39Y5V105Z10PT 131 C352 2203-005138 C-CERAMIC,CHIP;C182K,1.
3-2 Main Parts List Bottom SEC CODE Reference Part Description Vendor Part No. 1 J301 3705-001239 COMP-SMD;MHC-175 MHC-175 2 L302 2703-001772 INDUCTOR-SMD;18NH,5%,1.0X0.5X0.5MM MLK1005S18NJT 3 F307 2901-001116 COMP-SMD;NFM39R12C471T1 FM39R12C471T1 4 R330 2007-001305 R-CHIP;120,5% ERJ2GEJ121X 5 C747 2203-005057 C-CERAMIC,CHIP;C8R2C,8.2PF,50V GRM36C0G8R2D50PT 6 C402 2203-000812 C-CERAMIC,CHIP;C330J,33PF,50V GRM36C0G330J50PT 7 C756 2404-001105 C-TA,CHIP;10UF/6.
SEC CODE Reference Part Description Vendor Part No.
SEC CODE Reference Part Description Vendor Part No. 85 L102 2703-002025 INDUCTOR-SMD;BTC-0309-470 BTC-0309-470 86 F307 2203-005065 C-CERAMIC,CHIP;C105Z,1UF,10V GRM36C0G470J101PT 87 C328 2404-001105 C-TA,CHIP;10UF/6.
SEC CODE Reference Part Description Vendor Part No.
4-1 SYSTEM CLOCK (13MHz) LCD KEY_BOARD RTC_CLOCK (32.768KHz) EEPROM FLASH2 FLASH1 SRAM MIC SPEAKER VIBRATOR Charging Circuit Li-Ion Battery (Slim,Standard) ONE C RTC_VCC RTC_3V3 DC/DC CONVERTER PLL AGC,AFC RF INTERFACE A/D Interface I/O Interface Serial Data Interface BB INTERFACE VCC AVCC 3VRF XVCC 3VTX 3VBANDSEL Battery Temperature Battery Voltage Battery Type SIM CARD 4.
Block Diagrams Ant. S/W VC1(GSM) VC2(DCS) 1710 ~ 1785MHz(DCS) (CH 698 : 1747.2MHz) 890 ~ 915MHz(PGSM) (CH 62 : 902.4MHz) 880 ~ 915MHz(EGSM) TX LPF Dip. VC3 RX LNA LNA APC Circuit VCTCXO 13MHz PLL2 PLL1 IF VCO 1080MHz RF VCO bias circuit Rx SAW filter Rx SAW filter Dual Power AMP Module SI4133G-XM2 Dual Directional Coupler LPF DUAL SAW filter 925~960MHz (CH62 : 947.4MHz) 1805~1880MHz (CH 698 : 1842.
4-3 L Rx e L DCS(Tx) L L H GSM(Tx) H H L L VC1 VC2 VC3 1710 ~ 1785MHz(DCS) 2 3VTX TXEN2 Ant.
Block Diagrams 3 1 Dual SAW Filter U603 5 7 6 10 1805 ~ 1880 MHz -52dBm 16 9 Frequency = 947.067 MHz Power = - 46 dBm - 46dBm @ 947.067 MHz - 50dBm @ 1842.
2.
2-1-1 Main RF Top PCB Diagrams 2-2
2-1-2 Main Base Band Top 2-3 PCB Diagrams
2-2 Main Bottom PCB Diagrams 2-4
2-2-1 Main RF Bottom 2-5 PCB Diagrams
2-2-2 Main Base Band Bottom PCB Diagrams 2-6
