Samsung SGH-X300 Service Manual Download | Manualshive

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SGH-X300 Flow Chart of Troubleshooting

2-12

2-2. RF

2-2-1. GSM Rx

Normal condition

catch the

channel ?

Check U102

pin 12

≥

-65

dbm ?

Check U101

pin 21,22

≥

-

65dBm ?

Yes

No

No

Check U102

pin 16

≥

-65

dbm ?

Yes

No

Yes

Check ANT,

R101,R102,C104,L102

Resolder or change

CN100, L101, L102, C100, C105, C106

Resolder or change

U102

Resolder or change

F100

Resolder or change

U300

CONTINOUS RX ON

RF INPUT : 62CH

AMP : -50dbm

Check U101

pin 13 = 2.9V

Yes

Resolder or change

U200

Yes

No

No

1

2

3

4

5

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15
16
17
18
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Summary of Contents for SGH-X300

Page 1: ...E SGH X300 GSM TELEPHONE CONTENTS 1 Specification 2 Flow Chart of Troubleshooting 3 Exploded Views and Parts List 4 Main Electrical Parts List 5 PCB Diagrams 6 Block Diagrams Disassembling Manual Assembling Manual ...

Page 2: ...tronics Co Ltd Code No GH68 09643A 2006 03 Rev 1 0 ⓒ 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 ...

Page 3: ... Rx spacing 45MHz 45MHz 95MHz 80MHz Mod Bit rate Bit Period 270 833kbps 3 692us 270 833kbps 3 692us 270 833kbps 3 692us 270 833kbps 3 692us Time Slot Period Frame Period 576 9us 4 615ms 576 9us 4 615ms 576 9us 4 615ms 576 9us 4 615ms Modulation 0 3GMSK 0 3GMSK 0 3GMSK 0 3GMSK MS Power 33dBm 13dBm 33dBm 5dBm 30dBm 0dBm 30dBm 0dBm Power Class 5pcl 15pcl 5pcl 19pcl 0pcl 15pcl 0pcl 15pcl Sensitivity 1...

Page 4: ... 7 3 dBm 19 5 3 dBm TX Power control level DCS1800 0 30 3 dBm 1 28 3 dBm 2 26 3 dBm 3 24 3 dBm 4 22 3 dBm 5 20 3 dBm 6 18 3 dBm 7 16 3 dBm 8 14 3 dBm 9 12 4 dBm 10 10 4 dBm 11 8 4dBm 12 6 4 dBm 13 4 4 dBm 14 2 5 dBm 15 0 5 dBm TX Power control level PCS1900 0 30 3 dBm 1 28 3 dBm 2 26 3 dBm 3 24 3 dBm 4 22 3 dBm 5 20 3 dBm 6 18 3 dBm 7 16 3 dBm 8 14 3 dBm 9 12 4 dBm 10 10 4 dBm 11 8 4dBm 12 6 4 dBm...

Page 5: ...work No Yes Yes END Yes Check the Initial Operation Yes Charge the battery No Check the Voltage of the Battery 3 3V check keypad No Check the pin C152 C153 C155 C168 of U107 is 2 8V Check Power On key No check U200 and C200 Yes 1 Check the clock signal at pin 4 of OSC100 Freq 26Mhz Vrms 300mV No Check the clock generation circuit OSC100 Yes 2 ...

Page 6: ...4 VSS2 R2 VSS3 P6 VSS4 A6 VDDB VDDD N11 L11 VDDV N5 VDD_IO1 J4 VDD_IO2 C4 VDD_OCTL M3 N6 VDD3 B4 GND_OCTL F8 GNDS2 F9 GNDS3 F10 GNDS4 G7 GNDS5 GNDS6 G8 G9 GNDS7 G10 GNDS8 H6 GNDS9 P13 GNDV F6 GNDB M10 GNDD F7 GNDS1 H7 GNDS10 GNDS11 H8 D13 AUX_ADC3 C200 VCCD VCCA ...

Page 7: ...B of U300 is LOW Check U300 No Yes Yes END Yes Check the Initial Operation Yes Check R103 R107 R200 C130 No check the pin CKI of U300 is 13Mhz Check the clock signal at pin 3 of OSC100 Freq 26Mhz No check OSC100 1 Check the pin 9 of U300 is HIGH and pin 11 13 is 2 9V No Check U200 Yes 2 3 4 ...

Page 8: ...5 VDDE VDDE U16 N16 VDDE VDDE E16 E17 VDDE VDD_DPLL G16 VRTC D8 VSS A5 VDD VDD C16 VDDA C11 B1 VDDE VDDE B14 VDDE M1 U2 VDDE VDDE P8 E2 G1 VDD VDD R1 R4 VDD VDD T13 R16 VDD VDD R17 RSTB C12 F12 TDO F15 VDD F17 CKI VCCD VREF CLK13M_TR DSP_TDO TR_RST R106 R107 C130 R103 C131 R104 13MHZ_BB CLK13M_TR CLK13M_MC CLK13M_YMU 2 3 1 4 ...

Page 9: ...CN200 Check the U200 Check the U200 U300 END No Yes No Yes 1 2 Check the SIM Card The voltage is 2 8V at the pin 1 of CN200 C206 C208 7 GG 89 GG 10 C207 CN200 11 2 2 33 4 4 5 5 6 6 UP_IO R10 UP_RST J13 VDD12 C11 VDD34 C10 VDD5 B13 VDD67 K14 SIM_CLK J11 SIM_IO K11 SIM_RST N9 UP_CLK P10 C205 C203 VBAT C204 SIMDATA SIMCLK SIMRST ...

Page 10: ...SGH X300 Flow Chart of Troubleshooting 2 6 ...

Page 11: ...ophone Part Call with Sim before testing Check the soldered status of microphone MicroPhone does not work Resolder microphone END No Yes Yes Check the reference voltage on mic path R414 2 0V Yes Resolder or change No Is microphone OK Yes Check U200 No 1 2 ...

Page 12: ...art of Troubleshooting 2 8 V411 R414 C412 C405 VCCA R412 C406 R408 R413 R415 R409 C401 C404 L400 C409 L401 R402 R410 C407 MIC1 C411 R406 C400 V410 R404 C402 C408 R401 C403 MICINP MICOUTP MIC MIC MIC MICOUTN MICINN 1 2 ...

Page 13: ...Part Check the connection status of LCD connector CN800 There is no sound from speaker Are there any signal at the speaker pad on LCD PCB reconnect CN800 Replace the speaker module END No Yes No No Yes Check R403 R405 of U400 Voltage is 1V 1 Yes Check U600 2 ...

Page 14: ...SGH X300 Flow Chart of Troubleshooting 2 10 1 2 ...

Page 15: ...klight does not work Check conecting between PBA and LCD conector Select backlight 15 sec mode Check FPCB END No Yes No Check U701 pin 8 10V Check the LCD Yes Yes No L701 R716 Q700 3 D 1G 2 S VIN 3 VFB 4 TEST 5 GND 6 SW 7 VOUT 8 GND 9 U702 EN 1 GNDA 2 R717 R719 V717 C704 C705 VBAT LED LED BL_DIM LED_EN ...

Page 16: ... U101 pin 21 22 65dBm Yes No No Check U102 pin 16 65 dbm Yes No Yes Check ANT R101 R102 C104 L102 Resolder or change CN100 L101 L102 C100 C105 C106 Resolder or change U102 Resolder or change F100 Resolder or change U300 CONTINOUS RX ON RF INPUT 62CH AMP 50dbm Check U101 pin 13 2 9V Yes Resolder or change U200 Yes No No 1 2 3 4 5 ...

Page 17: ...SGH X300 Flow Chart of Troubleshooting 2 13 1 2 3 4 5 ...

Page 18: ...1 pin 19 20 65dBm Yes No No Check U102 pin 18 65 dbm Yes No Yes Check ANT R101 R102 C104 L102 Resolder or change CN100 L101 L102 C100 C105 C106 Resolder or change U102 Resolder or change F100 Resolder or change U300 CONTINOUS RX ON RF INPUT 698CH AMP 50dbm Check U101 pin 13 2 9V Yes Resolder or change U200 Yes No No 1 2 3 4 5 ...

Page 19: ...SGH X300 Flow Chart of Troubleshooting 2 15 1 2 3 4 5 ...

Page 20: ...hannel Check ANT R101 R102 C104 L102 No 1 Yes Check U102 pin 12 65 dbm 2 Resolder or change CN100 L101 L102 C100 C105 C106 No Yes Check U102 pin 18 65 dbm Resolder or change U102 No 3 Yes Check U101 pin 19 20 65dBm 4 No Resolder or change F100 Yes Check U101 pin 13 2 9V No Resolder or change U200 5 Yes Resolder or change U300 ...

Page 21: ...SGH X300 Flow Chart of Troubleshooting 2 17 1 2 3 4 5 ...

Page 22: ...D GND 9 GND 10 16 GND GND 14 13 GND GND 12 U102 1 BS 3 DCS PCSIN DCS PCSOUT 15 ENABLE 18 5 GND 21 L103 C105 C133 C134 TP103 8 GSMRX_1 GSMRX_2 9 3 GSM_TX PCSRX_1 12 13 PCSRX_2 VC1 4 2 VC2 VC3 5 F100 6 ANT 10 DCSRX_1 DCSRX_2 11 D PCSTX 1 G 7 G 14 C110 C104 C102 C135 R100 R102 DCS_Rx2 DCS_Rx1 PCS_Rx2 PCS_Rx1 L101 GSM_PAM_IN TX_BAND_SEL TX_EN TXPOWER EGSM_Rx1 DCS_PAM_IN DCS_TX_EN GSM_TX_EN PCS_RX_EN E...

Page 23: ... DAC 554 CODE APPLIED CH 62ch RBW 100KHz VBW 100KHz SPAN 10MHz REF LEV 10dBm ATT 20dB U102 pin 11 about 4 5dbm Yes No Yes U102 pin 7 3 7V U101 check change No Battery U200 check change Yes U102 pin 8 1 2V No U200 check Yes U102 pin 6 3V No U200 check U101 pin 12 13 28 29 2 9V U102 change or resolder U200 change or resolder No Yes U101 change or resolder Yes U102 pin 12 about 5dbm No Yes No 1 2 3 4...

Page 24: ...SGH X300 Flow Chart of Troubleshooting 2 20 4 2 2 1 3 ...

Page 25: ...Yes U102 pin 7 3 7V No Yes U102 pin 8 1 2V No Yes U102 pin 12 about 5dbm No Yes U102 pin 6 3V No U101 pin 12 13 28 29 2 9V Yes No U102 change or resolder Yes CONTINUS TX ON CONDITION TX POWER DAC 560 CODE APPLIED CH 698CH DCS 660CH PCS RBW 100KHz VBW 100KHz SPAN 10MHz REF LEV 10dBm ATT 20dB U101 check change 3 Battery U200 check change 4 U200 check 4 U200 check 4 U101 change or resolder 3 U200 cha...

Page 26: ...SGH X300 Flow Chart of Troubleshooting 2 22 4 2 2 1 3 ...

Page 27: ...Parts List 601 This Document can not be used without Samsung s authorization 3 1 Cellular phone Exploded View and Parts list QFU01 QLC01 QSP01 QFL01 QHI01 QCR20 QSC01 QMW02 QFR01 QVO01 QKP01 QMI01 QAN02 QRF03 QRE01 QIF01 QCR21 QBA01 QBA00 QME01 QMO01 QMP01 QVK01 QAN05 QCR05 QRF01 QMI03 ...

Page 28: ...QFU01 MEC CASE F UPPER EU BLK GH75 08748A QIF01 PMO COVER IF GH72 27402A QKP01 MEC KEYPAD SER BLK GH75 08870A QLC01 LCD LCD MODULE GH07 00845A QME01 UNIT METAL DOME GH59 02856A QMI01 MICROPHONE ASSY SGHX300 GH30 00242A QMI03 RMO RUBBER CUSHION MIC GH73 05982A QMO01 MOTOR DC SGHE720 GH31 00136A QMP01 PBA MAIN SGHX300 MAIN GH92 02546A QMW02 PCT COVER MAIN WINDOW GH72 27405A QRF01 MPR TAPE RF CAP GH7...

Page 29: ...RANTY CARD GH68 02623A MANUAL SFC GH68 04336A LABEL P BARCODE RUSSIA GH68 08494A LABEL R MAIN SER GH68 09010D MANUAL USERS EU RUSSIAN GH68 09036A CUSHION CASE 1 2 GH69 03551A BOX P SGHX300 SER GH69 03565E MPR VINYL BOHO F LOWER GH74 05004B MPR BOHO VINYL LCD CONN GH74 15350A MPR TAPE FPCB HOLE GH74 19652A MPR VINYL BOHO LCD GH74 19660A MPR TAPE EMI PBA 1 GH74 21765A MPR TAPE EMI PBA 2 GH74 21766A ...

Page 30: ...oded View and Parts List 604 This Document can not be used without Samsung s authorization 3 2 Test Jig GH80 03304A 3 3 3 Serial Cable 3 3 4 Power Supply Cable 3 3 5 DATA CABLE GH39 00127A 3 3 1 RF Test Cable GH39 00283A 3 3 2 Test Cable GH39 00304A 3 3 6 TA GH44 00954A ...

Page 31: ... SA C120 C CER CHIP 2203 000233 SA C121 C CER CHIP 2203 005234 SA C122 C CER CHIP 2203 005234 SA C123 C CER CHIP 2203 005234 SA C124 C CER CHIP 2203 005281 SA C125 C CER CHIP 2203 005281 SA C126 C CER CHIP 2203 005482 SA C127 C CER CHIP 2203 000386 SA C128 C CER CHIP 2203 000812 SA C129 C CER CHIP 2203 005482 SA C201 C CER CHIP 2203 000254 SA C202 C CER CHIP 2203 001072 SA C203 C CER CHIP 2203 005...

Page 32: ...313 C CER CHIP 2203 006260 SA C315 C CER CHIP 2203 000330 SA C316 C CER CHIP 2203 000330 SA C317 C CER CHIP 2203 006626 SA C401 C CER CHIP 2203 000330 SA C402 C CER CHIP 2203 000812 SA C403 C CER CHIP 2203 006260 SA C404 C CER CHIP 2203 000812 SA C405 C CER CHIP 2203 000995 SA C406 C CER CHIP 2203 000628 SA C407 C CER CHIP 2203 000425 SA C408 C CER CHIP 2203 006260 SA C409 C CER CHIP 2203 000330 S...

Page 33: ...CHIP 2203 001405 SA C600 C CER CHIP 2203 000233 SA C601 C CER CHIP 2203 005061 SA C602 C CER CHIP 2203 000233 SA C603 C CER CHIP 2203 005061 SA C604 C CER CHIP 2203 000254 SA C700 C CER CHIP 2203 006324 SA C701 C CER CHIP 2203 006361 SA C702 C CER CHIP 2203 005482 SA C703 C CER CHIP 2203 005482 SA C704 C TA CHIP 2404 001450 SA C705 C CER CHIP 2203 006562 SA C706 C CER CHIP 2203 006361 SA C707 C CE...

Page 34: ...2703 001750 SA L401 INDUCTOR SMD 2703 002202 SA L402 INDUCTOR SMD 2703 002202 SA L403 BEAD SMD 3301 001729 SA L404 BEAD SMD 3301 001729 SA L405 BEAD SMD 3301 001729 SA L406 BEAD SMD 3301 001729 SA L407 BEAD SMD 3301 001729 SA L408 BEAD SMD 3301 001729 SA L501 INDUCTOR SMD 2703 001513 SA L700 BEAD SMD 3301 001729 SA L701 INDUCTOR SMD 2703 000403 SA L800 BEAD SMD 3301 001659 SA LED700 LED 0601 00203...

Page 35: ...0 R CHIP 2007 000167 SA R211 R CHIP 2007 000172 SA R213 R CHIP 2007 000172 SA R214 R CHIP 2007 000162 SA R216 R CHIP 2007 007142 SA R217 R CHIP 2007 000154 SA R218 R CHIP 2007 000153 SA R219 R CHIP 2007 000162 SA R220 R CHIP 2007 000140 SA R301 R CHIP 2007 000157 SA R302 R CHIP 2007 000157 SA R303 R CHIP 2007 000162 SA R304 R CHIP 2007 000171 SA R305 R CHIP 2007 007480 SA R306 R CHIP 2007 000157 S...

Page 36: ...4 R CHIP 2007 000162 SA R425 R CHIP 2007 001317 SA R500 R CHIP 2007 000171 SA R501 R CHIP 2007 007021 SA R502 R CHIP 2007 007090 SA R503 R CHIP 2007 000151 SA R504 R CHIP 2007 001325 SA R505 R CHIP 2007 000161 SA R506 R CHIP 2007 000152 SA R507 R CHIP 2007 000152 SA R508 R CHIP 2007 000171 SA R509 R CHIP 2007 000161 SA R510 R CHIP 2007 000162 SA R511 R CHIP 2007 001291 SA R512 R CHIP 2007 001291 S...

Page 37: ...805 R CHIP 2007 000566 SA R806 R CHIP 2007 000140 SA R807 R CHIP 2007 000140 SA R808 R CHIP 2007 000140 SA R809 R CHIP 2007 000140 SA R810 R CHIP 2007 000140 SA R811 R CHIP 2007 000140 SA R812 R CHIP 2007 000140 SA R813 R CHIP 2007 000140 SA R814 R CHIP 2007 000140 SA R815 R CHIP 2007 000140 SA R816 R CHIP 2007 000171 SA R817 R CHIP 2007 000140 SA R818 R CHIP 2007 000140 SA SIM200 CONNECTOR CARD E...

Page 38: ...OR 1405 001082 SA VR405 VARISTOR 1405 001082 SA VR701 VARISTOR 1405 001082 SA VR702 DIODE TVS 0406 001231 SA VR703 DIODE TVS 0406 001231 SA VR704 DIODE TVS 0406 001231 SA VR705 DIODE TVS 0406 001231 SA VR706 DIODE TVS 0406 001231 SA VR707 DIODE TVS 0406 001231 SA VR708 DIODE TVS 0406 001231 SA VR709 DIODE TVS 0406 001231 SA VR710 DIODE TVS 0406 001231 SA VR711 DIODE TVS 0406 001231 SA VR712 DIODE ...

Page 39: ...SAMSUNG Proprietary Contents may change without notice 5 SGH X300 PCB Diagrams 5 1 This Document can not be used without Samsung s authorization ...

Page 40: ...SAMSUNG Proprietary Contents may change without notice SGH X300 PCB Diagrams 5 2 This Document can not be used without Samsung s authorization ...

Page 41: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization 6 SGH X300 Block Diagrams 6 1 ...

Page 42: ... the right side lower part confidential talk it disjoints with the outer side which it will call 2 The HOOK gets wider and it catches it lifts it disjoints with REAR by the hand 1 After connector we disjointing PBA 2 Remove the foreign object projection Tape 1 Separate the Keypad 2 Push the hinge and disjoint from Front 1 Remove a screw cap by using a pinset 2 Loosen a screw by using a driver 1 Lo...

Page 43: ...scratch and molding damage 1 Be care of scratch and molding damage 7 8 9 10 1 By using a assembly stick we disjoint between Folder Upper and lower it s same process right and left 1 Remove a EMI tape by using a pinset 1 Remove a Motor tape by using a pinset 1 Remove a speaker by using a pinset ...

Page 44: ...mation 1 Assembling Folder Lower like this picture 1 Be care of scratch and molding damage 1 2 3 4 5 1 Sticking the EMI tape by using a pinset 1 Insert the screw and put on the screw cap 1 Assembling Folder Lower like this picture 1 Inter a Motor and Speaker and pushing 1 Wire must not rid on LCD bracket guide The wire arrangement must be like this picture Assembling Manual ...

Page 45: ... damage 1 Be care of scratch and molding damage 7 8 9 10 11 1 Insert Folder hinge into Front 1 Sticking the foreign object projection Tape by using a pinset 2 Insert Keypad and Side Key 1 Inter a PBA into the Front and assembling connector 1 Folder Higher position assembling and after Lower position assembling 1 Sticking a screw this four point at Rear ...

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