Samsung SCH-A399 Service Manual Download Page 29 | Manualshive

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5-4

Trouble shooting

5-1-4 Abnormal Key Data Input

Check initial status.

END

Normal Key data

input?

Replace the Keyboard.

NO

NO

NO

NO

YES

YES

YES

YES

Scanning signals

outputted from U100

scan 0~5 Keysense

0~3

Check MSM board U100

NO

NO

NO

NO

YES

YES

YES

YES

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Summary of Contents for SCH-A399

Page 1: ...SERVICE PORTABLE CELLULAR TELEPHONE SCH A399 Manual PORTABLE CELLULAR TELEPHONE CONTENTS 1 Exploded Views and Parts List 2 PCB Diagrams 3 Electrical Parts List 4 Block Diagrams 5 Trouble shooting 6 Circuit Diagram ...

Page 2: ...Samsung Electronics Co Ltd Printed in Korea 1 2002 Rev 1 0 GH68 02629A ELECTRONICS ...

Page 3: ...ctrical Parts List 3 1 Main Parts List Top 3 2 Main Parts List Bottom 4 Block Diagrams 5 Trouble shooting 5 1 LOGIC Section 5 1 1 No Power 5 1 2 Abnormal initial operation Normal 2 8V Voltage source 5 1 3 Abnormal Backlight Operation 5 1 4 Abnormal Key Data Input 5 1 5 Abnormal Key tone 5 2 Receiver Section 5 3 Transmitter Section 6 Circuit Diagrams 6 1 Rx Circuit Diagram 6 2 Tx Circuit Diagram 6 ...

Page 4: ...Exploded Views and Parts List 1 1 1 Exploded Views and Parts List 1 1 Main SCH A399 1 2 12 13 14 15 17 19 7 10 11 8 4 5 6 14 1 14 2 20 21 18 22 3 16 9 ...

Page 5: ... GH75 01441A 9 WINDOW LCD GH72 03592A 10 SCREW 6001001429 11 SCREW CAP GH74 00611B 12 FRONT COVER GH75 01442A 13 KEY PAD GH75 01614A 14 MAIN PBA GH82 00091A 14 1 DOME SHEET GH59 00315A 14 2 MIC GH59 00745A 15 IF CONNECTOR COVER GH73 00745A 16 VOLUME KEY GH75 01297A 17 REAR COVER GH75 01443A 18 ANTENNA GH42 00148A 19 SCREW 6001 001402 20 MOBILE CAP GH73 00744A 21 BATTERY GH43 00457A 22 BATTERY GH43...

Page 6: ...1 5 Battery Charger Exploded Views and Parts List 1 3 1 4 Travel Adapter Parts List TYPE SEC CODE REMARK A GH44 00171A CHINA 1 3 Travel Adapter A Battery Charger GH39 00274A ...

Page 7: ...Exploded Views and Parts List 1 4 TEST JIG CABLE GH39 00122A 1 6 Test Jig TEST JIG GH80 10502C RF JIG CABLE GH39 00077A ...

Page 8: ...ophone Wearable EAR Microphone GH96 00922B 1 6 1 Test Jig 8924 or 8285 WIRELESS COMMVNCATIONS TEST SET TEST JIG DC POWER SUPPLY RF JIG CABLE TEST JIG CABLE 232 CABLE Exploded Views and Parts List 1 5 1 8 Data Kit DATA KIT ...

Page 9: ... LED200 LEFT LWR_N1 MEM MENU OK PWR END Q101 Q200 Q201 Q202 Q300 R130 R132 R134 R162 R163 R164 R200 R203 R204 R207 R209 R212 R215 R216 R218 R220 R222 R223 R224 R225 R226 R227 R228 R229 R246 R247 R248 R249 R250 R252 R253 R254 R255 R256 R267 R268 R269 R275 R276 R277 R280 R301 R304 R306 R307 R308 R309 R310 R311 R312 R332 R333 R400 R459 R460 RESOUT RIGHT SEND SHAP TCK1 TDI1 TDO1 TH300 TH301 TMS1 TRST1...

Page 10: ... C460 C461 C462 C464 C465 CN201 CN210 CN255 CN400 CN401 CN403 CN404 D301 D302 D400 D401 D402 F300 F301 F400 F401 F402 G1 G2 G4 GND GROUND HP L300 L303 L304 L306 L307 L308 L309 L310 L312 L313 L314 L315 L400 L402 L403 L404 L405 L406 L407 L408 L409 L410 L411 L412 L413 L415 L416 L417 L418 L420 L421 LWR MIC MIC OSC100 OSC300 Q100 Q203 Q301 Q400 Q401 Q402 Q405 Q406 Q407 Q408 Q409 Q410 R101 R102 R107 R10...

Page 11: ... 4X2 56 BLK 1 GH75 01614A SCH A399 SIL 2 GH72 02631A SCH A303 ABS TRP 2 GH72 02633A SCH A303 EF TYPE SIL 2 GH72 03072A SCH A303 ABS SIL 2 GH72 03073A SCH A303 ABS TRP 2 GH72 03074A SCH A303 ABS TRP 1 GH92 01236A SCH A399 SAMSUNG CHNA MAIN PBA 2 0405 001035 D301 1SV279 15V 3nA USC TP 2 0405 001035 D302 1SV279 15V 3nA USC TP 2 0405 001035 D401 1SV279 15V 3nA USC TP 2 0405 001035 D402 1SV279 15V 3nA ...

Page 12: ...24C256 32Kx8Bit dBGA 8P 92MIL 2 7V PLASTIC 2 1109 001191 U110 42553 4MX8 512KX8BIT FBGA 73P 85 90NS 3V 10 2 1201 001248 U426 0916 SOT 143 4P 2 7V 6Vd 2 1201 001384 U403 MD57 0001 SOT 26 6P 114MIL SIN 2 1201 001491 U301 912 LCC 7P 226MIL SINGLE 28dB PLASTIC 4 2V 30to 85C 2 1201 001764 U300 SOT23 6 TP 6P 63MIL SINGLE PLASTIC 5 5V 40TO 85C 2 1202 001036 U170 75W56 SSOP 8P 90MIL DUAL 7V CMOS PLASTIC 7...

Page 13: ...Kohm 5 1 16W DA TP 1005 2 2007 000148 R114 10Kohm 5 1 16W DA TP 1005 2 2007 000148 R121 10Kohm 5 1 16W DA TP 1005 2 2007 000148 R122 10Kohm 5 1 16W DA TP 1005 2 2007 000148 R126 10Kohm 5 1 16W DA TP 1005 2 2007 000148 R129 10Kohm 5 1 16W DA TP 1005 2 2007 000148 R130 10Kohm 5 1 16W DA TP 1005 2 2007 000148 R141 10Kohm 5 1 16W DA TP 1005 2 2007 000148 R144 10Kohm 5 1 16W DA TP 1005 2 2007 000148 R1...

Page 14: ...07 000172 R335 10ohm 5 1 16W DA TP 1005 2 2007 000173 R219 22ohm 5 1 16W DA TP 1005 2 2007 000173 R220 22ohm 5 1 16W DA TP 1005 2 2007 000173 R329 22ohm 5 1 16W DA TP 1005 2 2007 000173 R331 22ohm 5 1 16W DA TP 1005 2 2007 000173 R338 22ohm 5 1 16W DA TP 1005 2 2007 000775 R460 33Kohm 5 1 16W DA TP 1005 2 2007 000831 R405 39Kohm 5 1 16W DA TP 1005 2 2007 000831 R457 39Kohm 5 1 16W DA TP 1005 2 200...

Page 15: ... 002796 R108 510ohm 5 1 16W DA TP 1005 2 2007 002796 R156 510ohm 5 1 16W DA TP 1005 2 2007 007001 R340 3 9KOHM 5 1 16W DA TP 1005 2 2007 007009 R255 75OHM 5 1 16W DA TP 1005 2 2007 007009 R410 75OHM 5 1 16W DA TP 1005 2 2007 007107 R113 100Kohm 1 1 16W DA TP 1005 2 2007 007135 R307 18Kohm 1 1 16W DA TP 1005 2 2007 007136 R332 4 7Kohm 1 1 16W DA TP 1005 2 2007 007137 R228 1 2Kohm 1 1 16W DA TP 1005...

Page 16: ...33 C325 0 1nF 5 50V NP0 TP 1005 2 2203 000233 C329 0 1nF 5 50V NP0 TP 1005 2 2203 000233 C340 0 1nF 5 50V NP0 TP 1005 2 2203 000233 C342 0 1nF 5 50V NP0 TP 1005 2 2203 000233 C343 0 1nF 5 50V NP0 TP 1005 2 2203 000233 C344 0 1nF 5 50V NP0 TP 1005 2 2203 000233 C346 0 1nF 5 50V NP0 TP 1005 2 2203 000233 C353 0 1nF 5 50V NP0 TP 1005 2 2203 000233 C360 0 1nF 5 50V NP0 TP 1005 2 2203 000233 C362 0 1nF...

Page 17: ...0254 C433 10nF 10 16V X7R TP 1005 2 2203 000254 C438 10nF 10 16V X7R TP 1005 2 2203 000254 C454 10nF 10 16V X7R TP 1005 2 2203 000254 C457 10nF 10 16V X7R TP 1005 2 2203 000254 C462 10nF 10 16V X7R TP 1005 2 2203 000254 C464 10nF 10 16V X7R TP 1005 2 2203 000330 C324 0 012nF 5 50V NP0 TP 1005 2 2203 000330 C416 0 012nF 5 50V NP0 TP 1005 2 2203 000359 C444 0 15nF 5 50V NP0 TP 1005 2 2203 000359 C45...

Page 18: ... NP0 TP 1005 2 2203 000812 C232 0 033nF 5 50V NP0 TP 1005 2 2203 000812 C233 0 033nF 5 50V NP0 TP 1005 2 2203 000812 C234 0 033nF 5 50V NP0 TP 1005 2 2203 000812 C235 0 033nF 5 50V NP0 TP 1005 2 2203 000812 C236 0 033nF 5 50V NP0 TP 1005 2 2203 000812 C237 0 033nF 5 50V NP0 TP 1005 2 2203 000812 C239 0 033nF 5 50V NP0 TP 1005 2 2203 000812 C242 0 033nF 5 50V NP0 TP 1005 2 2203 000812 C243 0 033nF ...

Page 19: ... 0082nF 0 25pF 50V NP0 TP 1005 2 2203 005061 C102 100nF 80 20 16V Y5V TP 1005 2 2203 005061 C104 100nF 80 20 16V Y5V TP 1005 2 2203 005061 C106 100nF 80 20 16V Y5V TP 1005 2 2203 005061 C108 100nF 80 20 16V Y5V TP 1005 2 2203 005061 C110 100nF 80 20 16V Y5V TP 1005 2 2203 005061 C111 100nF 80 20 16V Y5V TP 1005 2 2203 005061 C113 100nF 80 20 16V Y5V TP 1005 2 2203 005061 C115 100nF 80 20 16V Y5V T...

Page 20: ... TP 1608 2 2203 005065 C333 1000nF 80 20 10V Y5V TP 1608 2 2203 005234 C419 0 0012nF 0 25pF 50V NP0 TP 1005 2 2203 005393 C411 0 005nF 0 1pF 50V NP0 TP 1005 2 2203 005395 C451 0 0047nF 0 1pF 50V NP0 TP 1005 2 2203 005444 C328 0 003nF 0 1pF 50V NP0 TP 1005 2 2203 005480 C356 33nF 10 10V X7R TP 1005 2 2203 005480 C364 33nF 10 10V X7R TP 1005 2 2203 005481 C403 47nF 10 10V X7R TP 1005 2 2203 005482 C...

Page 21: ...1 5mA 2 2904 001171 F300 836 5MHz 25MHz 12 5MHz 2dB TP 12 5MHz 3 5dB 0 800MHz 28dB 2 2904 001173 F401 881 5MHz 25MHz 12 5MHz 2dB TP 12 5MHz 3 5dB DC 779MHz 25dB 2 2904 001324 F402 85 38MHZ 1 9MHZ 30MHZ 0 6DB TP 10 5 2 2909 001122 F400 881 5MHz 836 5MHz 4 2 5dB TP 824 849MHz 50dB 869 894MHz 35dB 2 3301 001342 L201 AB 1 5KOHM 1X0 5X0 5MM 100MA TP M 1 4OHM 2 3301 001342 L202 AB 1 5KOHM 1X0 5X0 5MM 10...

Page 22: ...95A SPH A330 PORON 20 0X5 0XT3 0 BLK 2 GH74 01796A SPH A330 EMI MESH 11 0X4 0XT2 0 BLK 2 GH74 02215A SCH A399 EMI MESH 8 50X5XT0 3 BLK 2 GH74 02216A SCH A399 PORON 5X5XT3 0 BLK 2 GH74 02217A SCH A399 PORON 27X5XT3 0 BLK 2 GH74 02219A SCH A399 VINYL SHEET 23X6XT0 1 GRY 2 GH74 02333A SCH A399 EMI MESH 11X2XT2 GRY 2 GH74 02374A SCH A399 PC SHEET PI4 6XT0 3 SIL 2 GH75 01440B SCH A399 PC SIL 3 GH71 006...

Page 23: ... 1 L GRY 80 3 GH74 01786A SPH A330 EMI MESH 10X7XT3 GRY 3 GH74 02085A SPH A330 VINYL 4 0X8 5XT0 1 BLU 3 GH74 02087A SPH A330 VINYL 3 93X20 0XT0 1 BLU 3 GH74 02089A SCH A399 EPDM 3 93X31 0XT1 5 BLK 3 GH74 02090A SCH A399 EPDM 10 5X33 5XT1 5 BLK 3 GH74 02094A SCH A399 SPONGE 17 5X21 0XT0 5 GRY 3 GH74 02218A SCH A399 VINYL SHEET 5X3 50XT0 1 GRY 1 GH99 02625A SCH A399 CUH CHNA 2 GG68 10705A SP R912 CR...

Page 24: ... ...

Page 25: ...P2000 Integrated CODEC Mode Select ANSI IEEE 1149 1 1990JTAG Interface PC Interface Quad Mod Tx IF PLL Discrete IF Filter Dual LCD Main 128x128 4Gray Sub 80x48 B W EL Backlight LED Backlight 7Color Indicator Key Pad Peripheral Circuit 32M Flash ROM 4M SRAM 256K EEPROM R UIM Card Interface ICD ROM Writeer FM AGC CDMA AGC Clock Generator I Q FM Filter I Q CDMA Filter Quad Demod SBI Control SBI Contr...

Page 26: ...hboring circuits NO NO NO NO YES YES YES YES H level outputted from U406 Pin 2 Check Battery Q407 and its neighboring circuits NO NO NO YES YES YES YES U409 Pin 2 2 8V Check U409 and its neighboring circuits YES YES YES YES NO NO NO NO U406 Pin 3 2 8V Check U411 U412 U413 U414 and its neighboring circuits YES YES YES YES NO NO NO NO ...

Page 27: ... U100 TCXO CLK applied to U140 pin2 CHIP X8 CLK signal outputted from U100 pin A14 TCXO CLK signal outputted from U140 pin4 Check VCTCXO Output Check U140 and its neighboring circuits Replace if required Check the LCD pins and its neighboring circuits Replace if required Check MSM board U100 YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES NO NO NO NO...

Page 28: ...ss any button on the phone END H level to IC 1 pin 5 on the LOC Board Check IC 1 CN1 and neighboring circuits Replace if required NO NO NO NO YES YES YES YES H level outputted from U100 pin J4 Check R283 C244 U100 Replace if required NO NO NO NO YES YES YES YES ...

Page 29: ... Abnormal Key Data Input Check initial status END Normal Key data input Replace the Keyboard NO NO NO NO YES YES YES YES Scanning signals outputted from U100 scan 0 5 Keysense 0 3 Check MSM board U100 NO NO NO NO YES YES YES YES ...

Page 30: ...in L16 M17 U253 U254 pin 6 L Level Check U100 Replace U100 YES YES YES YES YES YES YES YES NO NO NO NO NO NO NO NO NO NO NO NO END YES YES YES YES CLK waveforom outputted Check CN1 LCD B d CLK waveform applied to CN255 Check CN255 NO NO NO NO YES YES YES YES pin 10 11 from CN1 p 11 12 LCD B d ...

Page 31: ...ng 5 2 Receiver Section Start CDMA mode Setup CDMA call OK Check Transmitter NO NO NO NO YES YES YES YES Normal CDMA SVC ROAM OK Check CDMA Rx path NO NO NO NO YES YES YES YES Measure CDMA FER Normal CDMA RF NO NO NO NO ...

Page 32: ...on Check RFT3100 RF OUT Level OK Ablormal Transmitter section Check RFT3100 pin 19 RF_LO Level 3dBm Check PLL OK NO NO NO NO YES YES YES YES Check PA U301 Output Level OK CDMA 25dBm NO NO NO NO NO NO NO NO YES YES YES YES NO NO NO NO CDMA 8dBm ...

Page 33: ... 100NF C437 1 2 3 4 5 1NF C441 UMC5NTL U401 NC FB OUT 5 3 _EN V_VDDM U413 TPS76928DBVR GND 2 IN 1 4 C459 V_RFTXD 6 3V 10UF 12nH L409 1K R423 U400 2SC4081BRT106 5 OUT 10K R430 D881LH F401 1 G G 3 4 G G 6 IN 2 82nH L404 C420 V_IF NC C455 10UF 6 3V 18PF C409 V_RING C462 10NF GND IN 1 4 NC FB 5 OUT 3 _EN 4 G2 IN 1 OUT 2 TPS76928DBVR U408 2 V_MSMA CRS5001 1003 U402 3 G1 220 R407 NC 10K R400 R409 V_MSMP...

Page 34: ...IN 3 RF_OUT U426 MRFIC0916T1 1 GND1 GND2 R336 10NF C339 27NH 51 51 R342 L306 220PF C363 BLM10A102SGPT L300 10K L313 BLM10A102SGPT R324 0 R315 1NF C303 C352 1NF 50V V_VDDM 27nH L308 12PF C324 V_RFTXD _RX_IN 100PF C344 IF_IN RX_IN 5 TCXO_IN 8 23 VCC VCC1 24 2 VP 22 VP1 _IF_IN 17 6 7 GND3 9 GND4 GND5 10 13 GND6 16 GND7 19 GND8 GND9 21 18 U306 CLK 12 DATA 14 DOIF 20 3 DO_RF 15 EN 11 FOLD GND1 1 GND2 4...

Page 35: ...100NF V_RING 1 2 RIGHT ZD200 SLS NNGA102TS TDO1 V_TCXO L201 ACZ1005M 152 T 3 1 2 5 4 TC7S08FUTE85L U202 1 2K 1 R228 TRST UP 1 2 OK 1 2 1 2 1 2 7 0 C146 33UF 6 3V R232 2 1 2 9 1K 1 C217 R227 C223 10NF 33PF 1 2 C224 33PF RX 6 10K R234 C210 1NF 100NF C220 MIC C214 1NF 47K 1 R229 1 3 4 5 ZD213 SMF05 TB 2 V_BAT TCK 10K ZD212 SMF05 TB 2 1 3 4 5 R269 MENU 1 2 SEND 1 2 R276 200 R200 22K 2 6 1 5 3 4 UIM_PW...

Page 36: ...0 Q_OFFSET Q_OUT B5 Q_OUT_N A6 P14 RAM_CS1_N RAM_CS2_N N4 R14 RD_N N17 G17 MICFBN G14 G15 MICFBP MICINN G16 MICINP H17 MICOUTN J17 MICOUTP H16 U17 MODE0 R16 MODE1 PA_ON D6 PA_ON2 C11 KEYSENS4 P12 LCD_CS_N LCD_EN P13 LNA_GAIN B12 C7 LNA_RANGE0 LNA_RANGE1 C9 LWR_N P16 MIC1N K17 J16 MIC1P MIC2N H15 MIC2P H14 MICBIAS HKADC6 G2 P15 HWR_N IDLE_N B7 A10 I_OFFSET I_OUT A7 B6 I_OUT_N E3 KEYSENS0 KEYSENS1 D...

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