Samsung SGH-E800 Service Manual Download

Page: 42 / 51

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-18

LT3465

CTRL

GND

VI N

VOUT

U601

R614
1K

LQH2MCN220K02L

L600

22uH

UDZSTE-1716B

ZD600

1UF
16V

C604

6.3V

4.7UF

C605

R607

LED

VBAT

BACKLIGHT

Summary of Contents for SGH-E800

Page 1: ... SERVICE Manual GSM TELEPHONE CONTENTS 1 Specification 2 Circuit Description 3 Exploded Views and Parts List 4 Electrical Parts List 5 Block Diagrams 6 PCB Diagrams 7 Flow Chart of Troubleshooting GSM TELEPHONE ...

Page 2: ...ELECTRONICS Samsung Electronics Co Ltd June 2004 Printed in Korea Code No GH68 05550A BASIC ⓒ ...

Page 3: ...0 880 915 925 960 1710 1785 1805 1880 ARFCN range 1 124 0 124 975 1023 512 885 Tx Rx spacing 45MHz 45MHz 95MHz Mod Bit rate Bit Period 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 Modulation 0 3GMSK 0 3GMSK 0 3GMSK MS Power 33dBm 5dBm 33dBm 5dBm 30dBm 0dBm Power Class 5pcl 19pcl 5pcl 19pcl 0pcl 15pcl Sensi...

Page 4: ...S1800 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 GSM900 5 33 3 dBm 6 31 3 dBm 7 29 3 dBm 8 27 3 dBm 9 25 3 dBm 10 23 3 dBm 11 21 3 dBm 12 19 3 dBm 13 17 3 dBm 14 15 3 dBm 15 13 3 dBm 16 11 5 dBm 17 9 5 dBm 18 7 5 dBm 19 5 5 dBm ...

Page 5: ...ver front end which amplifies the GSM DCS aerial signal converts the chosen channel down to a low IF signal of 100 kHz The first stage is composed of symmetrical low noise amplifiers LNAs They are matched to 50 ohm The LNAs are followed by an IQ down mixer It consists of two mixers in parallel but driven by quadrature out of phase LO signals The In phase I and Quadrature phase Q IF signals are low...

Page 6: ...ent battery energy or excessive die temperature 1 2 Backlight Brightness Modulator The Backlight Brightness Modulator BBM contains a programmable Pulse width modulator PWM and FET to modulate the intensity of a series of LED s or to control a DC DC converter that drives LCD backlight This phone SGH E800 use PWM control to contrast the backlight brigtness 1 3 Clock Generator The Clock Generator CG ...

Page 7: ... are connected to the main speaker AUXSP is connected to the Hands free kit MIC_P and MIC_N are connected to the main MIC And AUX_MIC_P and AUX_MIC_N are connected to earmicrophone YMU765_MA5 is a LSI for portable telephone that is capable of playing high quality music by utilizing FM synthesizer and ADPCM decorder that are included in this device As a synthesis YMU765_MA5 is equipped 32 FM voices...

Page 8: ... Programmable Interrupt Controller reset power clock unit DMA controller TIC Test Interface Controller peripheral bridge PPI SSI Synchronous Serial Interface ACC Asynchronous communications controllers timer ADC RTC Real Time Clock and keyboard interface KBIO 0 7 address lines of DSP core and HD 0 15 HA 1 26 address lines of ARM core and HD 0 15 data lines of ARM core are connected to memory YMU76...

Page 9: ...zation 2 5 with Tiger As the additional 8Mbit is usable except 2Mbit buffer embedded in Tiger the diverse UI data processing which is not a burden to the CPU is available JPEG encoder and decoder are baseline ISO IEC 10918 1 JPEG compliance DCT based JPEG decoder supports YUV444 YUV422 YUV420 and YUV411 format standard JPEG image ...

Page 10: ...d its Parts list 3 1 This Document can not be used without Samsung s authorization 1 Cellular phone Exploded View 1 QMI01 QCA02 QME01 QVK01 QMP01 QIF02 QBA18 QAN02 QAN03 QFR01 QKP01 QVO03 QRE01 QCK02 QCR06 QMP02 QME02 QPC01 QCA01 QSP01 QMO02 QFU01 QKP03 QLC40 QFL01 QCH01 QSC11 QCR05 ...

Page 11: ...01806A QME02 SUB METAL DOME SHEET GH59 01359A QFL01 SLIDE LOWER ASSY GH75 04460B QCR05 SCREW 6001 001478 QSC11 LOWER SCREW CAP GH73 03014A QCH01 CAMERA DUMMY ASSY GH75 04881A QFR01 FRONT COVER GH75 04458B QKP01 MAIN KEYPAD GH75 04463B QAN02 INTENNA ASSY GH42 00396A QAN03 INTENNA GND PLATE GH42 00396B QVK01 UNIT SIDE KEY GH59 01308A QMP01 MAIN PBA GH92 01805A QCA02 UNIT CAMERA KEY GH59 01313A QME01...

Page 12: ...loded view and its Part list 3 3 This Document can not be used without Samsung s authorization 3 Test Jig GH80 01909A 3 1 RF Test Cable GH39 00283A 3 2 Test Cable GH39 00217A 3 3 Serial Cable 3 4 Power Supply Cable 3 5 DATA CABLE GH39 00219A 3 6 TA GH44 00482A ...

Page 13: ...53 U202 1009 001018 U306 1109 001299 U302 1201 002075 U101 1202 001068 U201 1203 001895 U501 1203 001917 U206 1203 002980 U204 1204 002138 U304 1205 002327 U102 1205 002350 U400 1404 001221 TH201 1405 001093 TH300 1405 001093 TH301 1405 001093 TH302 1405 001082 V200 2007 000138 R127 2007 000140 R131 2007 000140 R132 2007 000140 R201 2007 000140 R203 2007 000140 R214 2007 000140 R223 2007 000140 R2...

Page 14: ...08 2007 001288 R114 2007 000138 R127 2007 001308 R110 2007 001308 R111 2007 001308 R116 2007 001308 R117 2007 001308 R125 2007 001313 R322 2007 001325 R326 2007 001329 R105 2007 001339 R238 2007 001339 R239 2007 002796 R200 2007 002796 R205 2007 002796 R217 2007 002796 R227 2007 007001 R224 2007 007014 R321 2007 007014 R323 2007 007100 R402 2007 007107 R211 2007 007107 R212 2007 007107 R213 2007 0...

Page 15: ...38 2203 000438 C306 2203 000438 C313 2203 000550 C141 2203 000643 C500 2203 000679 C151 2203 000679 C234 2203 000679 C238 2203 000679 C309 2203 000679 C429 2203 000812 C104 2203 000812 C215 2203 000854 C100 2203 000854 C105 2203 000854 C106 2203 000854 C236 2203 000885 C415 2203 001153 C140 2203 001383 C112 2203 001405 C319 2203 002443 C310 2203 002687 C318 2203 005053 C111 2203 005056 C227 2203 0...

Page 16: ...22 2203 005571 C321 2203 005664 C222 2203 006053 C128 2203 006093 C502 2203 006137 C142 2203 006190 C130 2203 006190 C132 2203 006208 C400 2203 006208 C402 2203 006208 C406 2203 006208 C413 2203 006208 C416 2203 006208 C417 2203 006208 C424 2203 006208 C428 2203 006208 C431 2203 006208 C432 2203 006257 C320 2203 006257 C412 2203 006257 C425 2203 006257 C426 2203 006257 C427 2203 006361 C241 2301 0...

Page 17: ...203 ZD502 0406 001203 ZD505 0406 001203 ZD506 0406 001203 ZD507 0406 001203 ZD508 0406 001203 ZD509 0406 001203 ZD510 0406 001203 ZD511 0406 001203 ZD512 0406 001203 ZD513 0504 001100 U305 SUB SEC CODE Design LOC 0402 001617 D608 0402 001617 D609 0403 001446 ZD600 0601 001819 D600 0601 001819 D601 0601 001819 D602 0601 001819 D603 0601 001819 D604 1003 001440 Q600 1203 001895 U603 1203 001917 U600...

Page 18: ...ent can not be used without Samsung s authorization 2203 005065 C611 2203 005065 C613 2203 005065 C614 2203 005482 C601 2203 005482 C602 2203 005482 C612 2203 005840 C616 2404 001086 C605 2404 001101 C604 2703 002714 L600 3708 001853 CN601 3708 001890 CN600 4715 001077 D610 3711 005661 CN602 ...

Page 19: ...jzGzV kjzGzV vmmzl Gt G G vmmzl Gt G G vmmzl Gt G G vmmzl Gt G G TX i G SGTYY i G TX i G SGTYY i G TX i G SGTYY i G TX i G SGTYY i G ym ym ym ym dY to dY to dY to dY to w G w G w G w G hhZ Z hhZ Z hhZ Z hhZ Z w GphSpiSxhG Gxi w GphSpiSxhG Gxi w GphSpiSxhG Gxi w GphSpiSxhG Gxi px GGGaGXUY UGSGXUX SGXUZ GaGWU QUAD DIV PFD CP VREG ym sv ym sv ym sv ym sv FracN DIV 1 1 2 VREG 26MHz 3W BUS CTL REG PWR ...

Page 20: ...800 Block Diagrams 5 2 Base Band Solution Block Diagram 0 0 0 0 1 1 1 1 2 2 2 2 3 3 3 3 0 0 0 0 1 1 1 1 2 2 2 2 3 3 3 3 0 0 0 0 1 1 1 1 2 2 2 2 4 4 4 4 5 5 5 5 6 6 6 6 0 0 0 07 7 7 7 7 7 7 7 5 5 5 5 0 0 0 0 2 2 2 2 0 0 0 0 1 1 1 1 2 2 2 2 0 0 0 0 1 1 1 1 2 2 2 2 ...

Page 21: ...SAMSUNG Proprietary Contents may change without notice 6 SGH E800 PCB Diagrams 6 1 This Document can not be used without Samsung s authorization 1 Main PCB Top Diagram ...

Page 22: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 6 2 This Document can not be used without Samsung s authorization 2 Main PCB Bottom Diagram ...

Page 23: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 6 3 This Document can not be used without Samsung s authorization 3 Sub PCB Top Diagram ...

Page 24: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 6 4 This Document can not be used without Samsung s authorization 4 Sub PCB Bottom Diagram ...

Page 25: ...ore than 3 4V Power On does not work Change the Battery END No Yes C412 V_ISUP 2 7V Check the PMU related to V_ISUP No Yes Check the Clock at R402 32KHZ Resolder X400 No Yes C433 VDD1 H Check the VDD1 circuit No Yes C432 VDD2 C431 VDD3 2 8V Check the VDD2 VDD3 circuit No Yes Check for the clock at C139 13MHz Check the clock generation circuit related to OSC101 No Yes Check the initial operation Ye...

Page 26: ...ST D9 RSTO SCL E3 SDA F2 SEL12RB E9 SEL3RB H4 SIMCLK REFGND K6 RF1SNS F10 E8 RF1SWS RF1VDD G10 RF1VDDS F9 RF2SNS H9 RF2SWS E10 RF2VDD H10 2 H3 ONKEY K8 OSC32I K9 OSC32O REC1 K1 REC2 J2 REC3 K2 REFC H8 HVSVBAT C8 HVSVDD D8 C10 IN T IO D2 ISUPA H6 ISUPD J4 MICBIAS J6 NC 1 NC A5 B5 HFAVBAT A6 HFAVD D HFAVD D B6 HVSGND B9 HVSOC B10 HVSSCN A10 HVSSCP C9 G1 DVDD2 DVDD2VBAT G3 DVDD3 H1 J1 DVDD3 DVDD3VBAT...

Page 27: ...hart of Troubleshooting This Document can not be used without Samsung s authorization 7 3 2 Initial R207 RSTON H Initial Failure Check the circuit related to reset END No Yes Is U300 pin 4 6 memory CE OK Yes Yes No Check the U300 Check the circuit around LCD Yes ...

Page 28: ...302 A0 H1 A1 G1 A10 E7 F7 A11 VDD3 R307 100K R305 100K R311 1K R304 100K R303 100K 100K R306 100K VDD3 10NF R308 C304 VDD3 VDD3 VDD3 VDD3 1NF C306 A 1 2 GND VCC 5 6 Y0 Y1 4 3 _E VDD3 U301 NC7SZ19L6 X VDD3 Y0 Y1 4 3 _E U300 NC7SZ19L6X A 1 2 GND VCC 5 6 C303 100NF HRD_ N HRD_N CS_NAN D HA 2 HA 23 NCSFLAS H HA 25 HD 0 15 HD 0 HD 1 HD 2 HD 3 HD 4 HD 5 HD 6 HD 7 HD 8 HD 9 HD 10 HD 11 HD 12 HD 13 HD 14 ...

Page 29: ... Samsung s authorization 7 5 3 Charging Part Check the U204 pin 4 4 9V Abnormal charging part END No Yes U204 pin 1 H No Yes Q201 pin 1 CHG_ON L No Yes Check the U204 pin 3 4 2V No Yes Check the circuit related to V_EXT_CHARGE Resolder or replace U204 Check the circuit related to CHG_ON signal Resolder or replace U204 Yes ...

Page 30: ...ooting 7 6 R231 47K R236 270K 5 1 S1 S2 4 FDG6301N Q202 6 D1 D2 3 G1 2 G2 R238 180K R235 1 8K 1 VDD2 180K R239 VBAT V_EXT_CHARGE UDZS8 2B ZD202 270K R237 330K 1 R233 LTC4054ES5 4 2 U204 BAT 3 2 GND PROG 5 4 VCC 1 _CHRG BCR133T Q201 1 3 2 C242 100NF C243 6 3V 10UF 100N F C241 10UF 10V C240 200K 1 R234 MES_BATT END_OF_CHARGE CHG_ON CHARGER_OK ...

Page 31: ... used without Samsung s authorization 7 7 4 Sim Part CN400 pin 1 5 H Phone can t access SIM Card Check the sim charge pump Check the SIM Card END No Yes Yes Yes No Check the X400 After Power ON Check SIMCLK Signal on CN400 pin3 in a few second Yes No Replace PBA After SIM card insert CN400 pin 2 H SIM_RST Yes ...

Page 32: ...OR SIM_IO BATTERY SIM_CLK SI M SIM INTERFACE SI M CHARGE VOLTAGE FC 135 X400 2 1 C410 8 2PF VCC C2 C6 SIMGND A2 B8 SIMIO SIMSCN A1 SIMSCP B1 SIMVBAT B2 C1 RST SIMCLK K8 OSC32I K9 OSC32O IO D2 E2 CHRVBAT D3 CLK C3 CPRES D1 CHRIV E1 CHRREG VBAT C413 6 3V 4 7UF C404 100NF 8 2PF C409 6 6 G 7 8 G G 9 10 G PC D6 A6 H2 9 S CN400 1 1 22 3 34 4 55 VBAT C400 4 7UF 4 7UF C402 6 3V 100NF C401 R402 10M 100NF C...

Page 33: ...e used without Samsung s authorization 7 9 5 Microphone Part Check the connection from MIC Check the circuit from U200 to MIC Resolder MIC Resolder the R200 R201 R203 R207 C211 and C218 END No Yes Yes Yes Yes No Check U200 PIN 1 9 L No Replace PBA Microphone does not work Yes Check the MIC No Replace the MIC ...

Page 34: ... C217 10PF 8 2PF C216 33PF C215 C210 100NF C211 NC C214 15PF C212 100NF 100U F 4V C213 C209 NC NC C208 510 R205 R201 1K MIC_BIAS 100NF C200 R200 510 AVDD NC C221 NC C220 NC C219 MIC MIC_P MIC_N AUDIO_SW3 AUDIO_SW 3 AUX_MIC 4 7 R219 100K 1 10K 1 R215 R216 VDD1 10K 1 R218 3 9K R224 MCLK MICN B13 A13 MICP D10 A11 EARN EARP B10 B11 BUZ AUXMICN A14 B14 AUXMICP AUXSP A10 AFS B9 AUXADC1 AUXADC2 G14 E14 A...

Page 35: ...s not work Check the Clock signal at Pin 1 of U304 13MHz Check the clock generation circuit related to OSC101and U304 No Yes No Resolder or replace U303 Yes U304 pin 17 18 1 8V When U304 operate Resolder U304 No Yes No END CN601 pin 2 4 1 8V When U303 operate Change the board to board FPCB Is Speaker working Change the Speaker No Yes Yes Yes CN502 pin 48 50 1 8V When U304 operate Resolder CN502 No...

Page 36: ... 8 C319 22NF 330 R32 2 VDD3 C317 100NF R32 3 51K 4 7K 1 R327 100N F C314 C318 1 2N F 3 3K R326 R328 33K VBAT TC7SH04FU TE85L 3 GND IN 2 NC 1 OUT 4 VCC 5 U303 VDD3 C307 100P F 22K 1 R324 9 VRE F VS S 8 C S 29 3 IRQ R D 31 RST 4 28 W R 19 MTR 5 NC PLLC 6 17 SPOUT1 SPOUT2 18 15 SPVD D SPVS S 16 7 VDD 33 G G 34 35 G G 36 HPOUT L MONO 10 11 HPOUT R IOVDD 32 LED 2 23 D4 D5 22 21 D6 D7 20 EQ 1 12 13 EQ 2...

Page 37: ...ting This Document can not be used without Samsung s authorization 7 13 7 Key Data Input When one of the keys is pushed is it displayed on LCD Check the Dome sheet Key Pad END No Yes Yes Check Initial Operation When one of the keys is pushed KBIO signal is OK Replace the PBA No Yes ...

Page 38: ...oting 7 14 12 DIGIT8 12 DIGIT10 DIGIT1 12 DIGIT2 12 12 12 SHARP DIGIT9 12 DIGIT6 DIGIT4 12 12 DIGIT5 12 DIGIT3 12 DIGIT7 12 STA R 1 2 3 4 5 NZQA5V6XV5T1 ZD303 KBIO 0 7 KBIO 0 KBIO 1 KBIO 2 KBIO 3 KBIO 4 KBIO 5 KBIO 6 KBIO 7 CLR 12 DOW N 12 SEND 12 LEFT 12 12 SOFT 1 2 RIGHT 12 INT 1 UP 12 SOFT 2 12 KBIO 2 6 KBIO 2 KBIO 3 KBIO 4 KBIO 5 KBIO 6 ...

Page 39: ...1 5V Resolder R219 R220 END No Yes Yes Receiver does not work SPK PAD 1 5V Change the SUB board No Yes Is Receiver working Replace the Receiver No Yes No Resolder or replace U202 Yes No Resolder CN502 CN502 pin 48 50 1 5V Yes CN502 pin 2 4 1 5V No Change the board to board FPCB Yes Check the soldering of the spaeaker wire No Modify the speaker wire soldering Yes U202 pin 9 13 1 5V ...

Page 40: ...S2 2S1 3 5 2S2 3 4I N 10 3S1 7 9 3S2 11 4S1 13 4S2 U202 STG3699 2 1 2I N 15 1S1 SPVDD C231 100NF REC_P AUDIO_SW1 SPK_N REC_N SPK_P AMP_N AUDIO_SW2 AMP_P 4 7 R219 100K 1 10K 1 R215 R216 VDD1 10K 1 R218 3 9K R224 MCLK MICN B13 A13 MICP D10 A11 EARN EARP B10 B11 BUZ AUXMICN A14 B14 AUXMICP AUXSP A10 AFS B9 AUXADC1 AUXADC2 G14 E14 AUXADC3 F13 AUXADC4 A8 ADI DD FSC 4 7 R220 REC_N REC_P EAR_ADC MES_BATT...

Page 41: ...thout Samsung s authorization 7 17 9 Back Light for Color Main LCD Is LCD Contrast set on high level in the Menu Set LCD Contrast on high level END No Yes Yes Backlight does not work CN601 pin 5 H Change the board to board FPCB No Yes U601 PIN 1 12V Check the U601 the related circuit No Yes Yes Replace the LCD Module ...

Page 42: ... This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 7 18 LT3465 CTRL 43 FB GND 2 SW 6 5 VIN 1 VOUT U601 R614 1K LQH2MCN220K02L L600 22uH UDZSTE 1716B ZD600 1UF 16V C604 6 3V 4 7UF C605 12 R607 LED LED VBAT BACKLIGHT ...

Page 43: ...s authorization 7 19 10 Key Back Light 1 Main Key Part 2 Sub Key Part U502 PIN46 H Check the U502 or Replace PBA END No Yes Yes Sub Key Backlight does not work U600 pin 4 H No Check the U600 Yes C430 H Check the PMU related to VDD_KEY END No Yes Yes Main Key Backlight does not work CN601 PIN6 H Change the board to board FPCB No Yes ...

Page 44: ...01 AOT 0603P W03 X 47 R320 R316 47 R319 47 47 R315 R312 47 D303 D302 D308 47 R318 R317 47 D306 D305 R313 47 R314 47 D307 D304 VDD_KE Y AOT 0603P W03 X D604 VBAT 4 MIC5213 3 3BC5 U600 EN 1 3 GND IN 5 NC 2 OUT D601 AOT 0603P W03 X AOT 0603P W03 X D600 47 R602 R603 47 AOT 0603P W03 X D602 C600 470NF R605 47 D603 AOT 0603P W03 X R606 47 R604 47 SUB_KEY_BACKLIGHT ...

Page 45: ... used without Samsung s authorization 7 21 11 Camera part Camera function does not work Yes No Reconnect the camera module Check the Camera connector on SUB PCB Yes U604 pin 10 2 8V No Check the U604 Yes OSC500 Pin 3 24MHz No Check OSC500 and R500 Yes Is there another problem END Replace the camera module Yes ...

Page 46: ...L1 MCS MD0 D2 E1 MD1 H3 MD10 MD11 J1 J2 MD12 MD13 J3 LD9 J9 M6 LREN LRS K5 LWEN M7 MA0 D1 C1 MA1 MA2 B1 B2 MA3 LD15 F8 LD2 L10 LD3 L9 L8 LD4 LD5 K10 LD6 K9 LD7 K8 LD8 K7 L6 LCS2 M10 LD0 LD1 M9 LD10 J8 LD11 H8 LD12 G9 LD13 G8 LD14 F9 E9 DVSS6 DVSS7 F3 F10 DVSS8 DVSS9 H9 D1 0 EXTVS C4 GP O HREF A9 LCS1 K6 DVSS15 M5 M8 DVSS16 DVSS17 B3 A7 DVSS18 C8 DVSS2 DVSS3 C9 D3 DVSS4 DVSS5 D8 A6 DI 6 DI 7 B7 DVS...

Page 47: ...ON RF input CH center freq 67 7kHz Amp 50dBm Check U100 pin4 L pin8 L U100 pin5 65dBm F101 pin1 67dBm U102 pin6 7 8 9 1V U102 pin32 70dBm pin33 70dBm Check ANT Switch control circuit Resolder U100 Resolder F101 C105 L107 Resolder L104 L105 L106 Check U102 pin4 10 22 2 7V Check Resolder U102 R103 R104 RF13MHz RF PSU Part Resolder U102 R126 R128 R129 R130 1V Yes Yes Yes Yes Yes Yes Yes Yes No No No ...

Page 48: ...8 L U100 pin11 18dBm U101 pin6 18dBm OSC100 pin1 15dBm U101 pin48 11dBm Change or Resolder U100 Check ANT Switch control circuit Resolder L115 C112 Resolder R114 R116 R117 U102 pin6 7 8 9 1V Yes Check U101 VBATT pin42 43 OK Resolder or Change U101 Check VBATT or PAM control signal Check Resolder RFLO signal RF13MHz RF PSU Part Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No END Check U2...

Page 49: ...F input CH center freq 67 7kHz Amp 50dBm Check U100 pin4 L pin8 L U100 pin1 65dBm F102 pin1 67dBm U102 pin6 7 8 9 1V U102 pin38 70dBm pin39 70dBm Check ANT Switch control circuit Resolder U100 Resolder F102 C106 L114 Resolder L108 L110 L111 Check U102 pin4 10 22 2 7V Check Resolder U102 R103 R104 RF13MHz RF PSU Part Resolder U102 R126 R128 R129 R130 1V Yes Yes Yes Yes Yes Yes Yes Yes No No No No N...

Page 50: ...8V U100 pin9 18dBm U101 pin31 18dBm OSC100 pin5 15dBm U101 pin37 11dBm Change or Resolder U100 Check ANT Switch control circuit Resolder L116 C111 Resolder R108 R110 R111 U102 pin6 7 8 9 1V Yes Check U101 VBATT pin42 43 OK Resolder or Change U101 Check VBATT or PAM control signal Check U102 pin4 10 22 2 7V OK Check Resolder RFLO signal RF13MHz RF PSU Part Yes Yes Yes Yes Yes Yes Yes Yes No No No N...

Page 51: ... 6K 1 R12 8 100PF C133 C151 27PF 68PF C14 0 C123 120PF 1K R131 8 2P F C145 B1 2 B2 5 C1 6 C2 3 E1 1 E2 4 18 R108 PEMD10 Q102 R13 0 R119 5 6K 1 C14 6 180 1 120PF 33nH L109 150PF C119 C126 18 R114 100UF 6 3V 47 C152 10PF R122 12nH L114 L10 8 5 6nH R109 220K C108 100N F C122 180PF 0 R120 L112 33nH C103 10P F 23 24 SYNON 22 SYNVCC TXCP O 3 TXCPVCC 45 TXON 1 TXRFI 15 REFI N REFVCC 16 RFCP O 21 20 RFCPV...

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