Samsung SGH-N620 Service Manual Download Page 28

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Flow chart of trouble shooting

5-2

VCC

6.3V

47UF

GND

ON/OFF

VIN

VOUT

MCL4154

D100

C129 10NF

R100 47K

100UF

6.3V

VOUT

10NF

C123

10UF 6.3V

27PF

C125

R103

100K

111

6.3V

1UF

100UF

10NF

VCC

100NF

C151

6.3V

10UF

C100

C190

1UF

6.3V

10UF

C124

VOUT

10NF

C101

LP2985AIM5-3.0

U102

BYP

ASS

GND

ON/OFF

VIN

VCC

LP2985AIM5-3.3

U100

BYP

ASS

C127 1UF

U106

FDC6329L

R108

R104

R107

6.3V

10UF

U105

LP2985AIM5-3.0

BYP

ASS

GND

ON/OFF

VIN

R101

100NF

RB414_II06N

M100

GND

10NF

C102

C128

10NF

S_BA

TC_VCC

LED_3V3

+VBA

POWER

100PF

Summary of Contents for SGH-N620

Page 1: ...RVICE DUAL BAND Mobile Cellular Phone SGH N620 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 12 2001 Rev 1 0 GH68 02583A ELECTRONICS ...

Page 3: ...in 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 GSM Receiver 5 12 GSM Transmit 5 ...

Page 4: ...Exploded Views and Parts List 1 1 1 Exploded Views and Parts List 1 1 Main SGH N620 3 2 1 4 6 9 5 8 13 10 11 12 7 14 17 18 19 15 16 ...

Page 5: ...D GH07 00131A GH07 00131A GH07 00131A GH07 00131A 1 10 COVERCONNECTOR GH73 00893A GH73 00893B GH73 00893C GH73 00893D 1 11 SHIELD REAR GH72 03213A GH72 03213A GH72 03213A GH72 03213A 1 12 SPEAKER 3001 001253 3001 001253 3001 001253 3001 001253 1 13 REARCOVERASS Y GH75 01471A GH75 01471B GH75 01471C GH75 01471D 1 14 MOTOR GH31 00033A GH31 00033A GH31 00033A GH31 00033A 1 15 MOBILE CAP GH73 00892A G...

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 1 6 Test Jig TEST JIG GH80 10508A ...

Page 7: ...DM CABLE GH39 00080A Exploded Views and Parts List 1 4 TEST JIG CABLE GH39 00079A RF JIG CABLE GH39 00094A ...

Page 8: ...rts List 1 7 Normal EAR Microphone Wearable EAR Microphone GH59 00168A 1 8 Data Kit DATA KIT GH39 00078A 1 6 1 Test Jig 8922 or 8960 WIRELESS COMMVNCATIONS TEST SET TEST JIG DC POWER SUPPLY RF JIG CABLE TEST JIG CABLE 232 CABLE ...

Page 9: ...68 C680 C701 CN200 D100 F200 F201 F203 JT1 JT10 JT11 JT12 JT13 JT14 JT15 JT2 JT3 JT4 JT5 JT6 JT7 JT8 JT9 L200 L500 L604 L624 LED201 MIC1 OSC401 OSC500 Q200 Q201 Q202 Q203 Q400 R100 R101 R202 R205 R206 R207 R208 R209 R210 R211 R212 R215 R217 R400 R401 R402 R403 R404 R405 R406 R407 R409 R412 R422 R423 R432 R438 R439 R440 R442 R443 R500 R501 R502 R503 R504 R506 R507 R508 R509 R510 R511 R512 R513 R514...

Page 10: ...676 C677 C678 C679 C698 C700 CN2 CN211 CN220 CN3 CN310 CN501 D300 L600 L601 L602 L603 L605 L606 L607 L608 L609 L612 L615 L616 L618 L619 L620 L621 L622 L623 M100 Q300 Q303 Q600 Q601 Q602 Q603 Q604 R102 R103 R104 R105 R107 R108 R300 R301 R302 R303 R304 R305 R306 R307 R320 R323 R328 R331 R332 R492 R602 R604 R605 R606 R607 R608 R609 R610 R611 R612 R613 R614 R615 R616 R621 R624 R627 R632 R633 R634 R635...

Page 11: ...5V104Z16AH 19 C409 2203 002443 C CERAMIC CHIP 0 33nF 10 50V X7R TP 1005 CL05B331KBNC 20 C410 2203 000679 C CERAMIC CHIP 0 027nF 5 50V NP0 TP 1005 CM05CG270J50AH 21 C411 2203 000679 C CERAMIC CHIP 0 027nF 5 50V NP0 TP 1005 CM05CG270J50AH 22 C413 2203 003054 C CERAMIC CHIP 0 009nF 0 25pF 50V NP0 TP 1005 GRP1555C1H9R0DZ01E 23 C414 2203 000386 C CERAMIC CHIP 0 015nF 5 50V NP0 TP 1005 GRP1555C1H150JZ01...

Page 12: ...HIP 0 033nF 5 50V NP0 TP 1005 GRP1555C1H330JZ01E 59 C525 2203 000812 C CERAMIC CHIP 0 033nF 5 50V NP0 TP 1005 GRP1555C1H330JZ01E 60 C526 2203 005061 C CERAMIC CHIP 100nF 80 20 16V Y5V TP 1005 CM05Y5V104Z16AH 61 C527 2203 000254 C CERAMIC CHIP 10nF 10 16V X7R TP 1005 CL05B103KONC 62 C528 2203 000679 C CERAMIC CHIP 0 027nF 5 50V NP0 TP 1005 CM05CG270J50AH 63 C529 2203 000679 C CERAMIC CHIP 0 027nF 5...

Page 13: ... TP NFM2012R13C471R 100 F201 2901 001116 FILTER EMI SMD 50V 0 3A 470pF 2x1 25x0 5mm TP NFM2012R13C471R 101 F203 2901 001116 FILTER EMI SMD 50V 0 3A 470pF 2x1 25x0 5mm TP NFM2012R13C471R 102 L200 2703 001752 INDUCTOR SMD 39nH 5 1 0x0 5x0 5mm LL1005 FH39NJ 103 L500 2703 001752 INDUCTOR SMD 39nH 5 1 0x0 5x0 5mm LL1005 FH39NJ 104 L604 2703 002201 INDUCTOR SMD 33NH 5 1 0X0 5X0 5MM CIH05T33NJNC 105 L624...

Page 14: ... 142 R441 2007 007771 R CHIP 0OHM 5 1 16W DA TP 1005 ERJ2GEJ0R0E 143 R500 2007 007317 R CHIP 2 2Kohm 1 1 16W DA TP 1005 MCR01MZSF2201 144 R501 2007 007317 R CHIP 2 2Kohm 1 1 16W DA TP 1005 MCR01MZSF2201 145 R502 2007 007317 R CHIP 2 2Kohm 1 1 16W DA TP 1005 MCR01MZSF2201 146 R503 2007 007317 R CHIP 2 2Kohm 1 1 16W DA TP 1005 MCR01MZSF2201 147 R504 2007 007318 R CHIP 1Kohm 1 1 16W DA TP 1005 RK73H1...

Page 15: ...7 2007 000162 R CHIP 100Kohm 5 1 16W DA TP 1005 RC1005J104CS 184 R590 2007 000148 R CHIP 10Kohm 5 1 16W DA TP 1005 RC1005J103CS 185 R599 2007 000162 R CHIP 100Kohm 5 1 16W DA TP 1005 RC1005J104CS 186 R601 2007 007771 R CHIP 0OHM 5 1 16W DA TP 1005 ERJ2GEJ0R0E 187 R617 2007 007698 R CHIP 5 1Kohm 1 1 16W DA TP 1005 RK73H1ETP5101F 188 R618 2007 007142 R CHIP 10Kohm 1 1 16W DA TP 1005 RK73H1ETP1002F 1...

Page 16: ... IC EEPROM 24C512C1 512KBIT LAP 8P 320MIL 2 7V PLASTIC 55TO 125C 6 0UA CMOS TP AT24C512C1 10CI 2 7 207 U580 1203 002247 IC VOL DETECTOR S 809 SOT 23 5 5P 150MW 40TO 85C 50MA TP S 80926ALMP DAP T2 208 U611 1209 001354 IC ETC LINEAR HD155173NPEL QFP 24P 165MIL PLASTIC 3 4V 240mW 25to 85C TP HD155173NPEL 209 U635 0505 001423 FET SILICON FDG6323L N P 0 3W SC70 6 FDG6323L 210 V500 1405 001082 VARISTOR ...

Page 17: ...C CERAMIC CHIP 10nF 10 16V X7R TP 1005 CL05B103KONC 21 C124 2404 001105 C TA CHIP 10UF 20 6 3V GP TP 2012 TCSCS0J106MPAR 22 C125 2203 000679 C CERAMIC CHIP 0 027nF 5 50V NP0 TP 1005 CM05CG270J50AH 23 C126 2404 001231 C TA CHIP 47uF 20 6 3V GP TP 3718 595D476X06R3A2T 24 C127 2203 005065 C CERAMIC CHIP 1000nF 80 20 10V Y5V TP 1608 CL10F105ZONC 25 C128 2203 000254 C CERAMIC CHIP 10nF 10 16V X7R TP 10...

Page 18: ...CM05X7R102K50AH 62 C623 2203 000233 C CERAMIC CHIP 0 1nF 5 50V NP0 TP 1005 CL05C101JBNC 63 C624 2203 000233 C CERAMIC CHIP 0 1nF 5 50V NP0 TP 1005 CL05C101JBNC 64 C625 2203 005053 C CERAMIC CHIP 0 0039nF 0 25pF 50V NP0 TP 1005 CM05CG3R9C50AH 65 C626 2203 000812 C CERAMIC CHIP 0 033nF 5 50V NP0 TP 1005 GRP1555C1H330JZ01E 66 C627 2203 000438 C CERAMIC CHIP 1nF 10 50V X7R TP 1005 CM05X7R102K50AH 67 C...

Page 19: ...0 TP 1005 CL05C101JBNC 104 C679 2203 000679 C CERAMIC CHIP 0 027nF 5 50V NP0 TP 1005 CM05CG270J50AH 105 C700 2203 000330 C CERAMIC CHIP 0 012nF 5 50V NP0 TP 1005 C1005C0G1H120JT 106 CN2 3710 001105 CONNECTOR SOCKET 2P 1R 1 27mm SMD S AU 24 8005 002 100 867 107 CN211 3711 004937 CONNECTOR HEADER BOX 14P 2R 0 5MM SMD S AUF NATURAL AXK6F14335J 108 CN220 3710 001595 CONNECTOR SOCKET 18P 1R 0 5mm SMD A...

Page 20: ...2 2007 000148 R CHIP 10Kohm 5 1 16W DA TP 1005 RC1005J103CS 146 R303 2007 000162 R CHIP 100Kohm 5 1 16W DA TP 1005 RC1005J104CS 147 R304 2007 000162 R CHIP 100Kohm 5 1 16W DA TP 1005 RC1005J104CS 148 R305 2007 000162 R CHIP 100Kohm 5 1 16W DA TP 1005 RC1005J104CS 149 R306 2007 000148 R CHIP 10Kohm 5 1 16W DA TP 1005 RC1005J104CS 150 R307 2007 000159 R CHIP 56Kohm 5 1 16W DA TP 1005 RC1005J563CS 15...

Page 21: ...3404 001152 SWITCH TACT 12V DC 20mA 160gf 4 5x4 0x2 3mm SPST LS10N2 T 188 SW2 3404 001152 SWITCH TACT 12V DC 20mA 160gf 4 5x4 0x2 3mm SPST LS10N2 T 189 TH300 1404 001005 THERMISTOR NTC 47Kohm 5 4050K 2 0mW C TP NTH5G20P40B473J07TE 190 U102 1203 002076 IC VOLTAGE REGULATOR 2985 SOT 23 5P 63MIL PLASTIC 2 9 3 1V 40to 125C 350mA TP LP2985AIM5X 3 0 191 U103 1203 001701 IC VOLTAGE REGULATOR 2982 SOT 23 ...

Page 22: ... 14K 02 200 218 V202 1405 001110 VARISTOR 18V 20A 1X0 5X0 6MM TP AVLC 14S 02 050 219 V203 1405 001110 VARISTOR 18V 20A 1X0 5X0 6MM TP AVLC 14S 02 050 220 V204 1405 001110 VARISTOR 18V 20A 1X0 5X0 6MM TP AVLC 14S 02 050 221 V205 1405 001082 VARISTOR 5 6V 20A 1x0 5x0 6mm TP AVL 5M 02 200 222 V206 1405 001110 VARISTOR 18V 20A 1X0 5X0 6MM TP AVLC 14S 02 050 223 V207 1405 001110 VARISTOR 18V 20A 1X0 5X...

Page 23: ...XRX XVCC LED 3V3 RTC VCC AVcc LDO Vcc LDO Serial Data Interface I O Interface A D Interface AGC AFC PLL Load S W Charging Circuit Li Ion Battery Standard ONE C VIBRATOR SYSTEM CLOCK 13MHz SRAM EEPROM RTC_CLOCK 32 768KHz KEY_BOARD SIM CARD SPEAKER MIC BB INTERFACE RF INTERFACE Charging Current LCD YMU ...

Page 24: ...MHz 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 540MHz GSM 1150 1185MHz DCS 1575 1650MHz CH 62 947 4MHz CH 698 1842 4MHz CH 62 902 4MHz CH 698 1747 4MHz CH 62 1172 4MHz ...

Page 25: ...gh ITXP ITXN 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 3 5 8 540 MHz PCN 1575 1650 MHz Tx GSM 1150 1185 MHz 2 4 5 38 35 20 19 18 17 30 47 5 1 8 1 4 2 5 2 19 20 Ant S W Control Circuit 3VTXRx TXEN2 VC1 VC2 VC2 VC1 GSM Tx DCS Tx Rx H H L L L L 11 SI4133 MLP28 U612 VCTCXO 13MHz U613 IF VCO 1080MHz PLL1 PLL2 RF VCO AFCDAC 1...

Page 26: ...z Mixer 2 PGA I Q Demod Mixer 1 Mixer 1 LC Filter 45MHz 1 2 30 47 10 1 1 3 7 5 1 8 7 5 53 54 2 3 49 50 8 6 4 2 40 41 27 SDATA SCLK SYNEN1 46dBm 947 467 MHz 50dBm 1842 467 MHz 47dBm 30dBm 33dBm 38dBm 52dBm 43dBm 9dBm 1172 4 MHz 9 5dBm 1617 4 MHz GSM 1150 1185 MHz DCS 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 25 2...

Page 27: ...an 3 4V No Yes Yes Check U100 and the path from VBATT to M100 The node between D100 and M100 2 8V No Yes U106 pin 2 3 4 3 4V 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 R613 Check the clock generation circuit related to U613 and Q604 No Yes Yes ...

Page 28: ... C113 C117 10NF 10NF 1 VCC 100NF C151 6 3V 10UF C100 C190 1UF 6 3V 10UF C124 VOUT 5 10NF C101 LP2985AIM5 3 0 U102 BYPASS 4 2 GND 3 ON OFF 1 VIN AVCC LP2985AIM5 3 3 U100 4 BYPASS 2 C127 1UF U106 FDC6329L R2 1 1K R108 1K R104 1K R107 6 3V 10UF C114 U105 LP2985AIM5 3 0 4 BYPASS GND 2 ON OFF 3 VIN R101 1K 100NF C110 RB414_II06N M100 GND 2 10NF C118 C102 C128 10NF S_BATT RTC_VCC LED_3V3 VBATT POWER 100...

Page 29: ... END No U410 pin 4 H The node between R505 and C509 H RST No Check U505 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 30: ...art of trouble shooting 5 4 U108 U407 VCC VCC R505 C509 R509 C526 SIM5V3V SIMPWDN_BOOT F_WP SYSRST GPIO3 GPIO4 DTR1 F U41 0 U40 1 6 F_Vdd VCC 3 4 Flash R400 F_WP U41 1 U402 6 Flash CSROM 3 4 vccw CS _ FL SH A ...

Page 31: ...rging Part Abnormal charging part Replace TA Check the CN220 pin 1 2 3 8V No Yes Yes Check the U303 pin 3 3 8V Resolder C200 V210 C316 Yes No U303 pin 4 L Resolder R328 Yes No Resolder components around U303 Check the U303 pin 5 1 5V END Yes No ...

Page 32: ...ooting 5 6 2SB1427 E T100 3 LTC1734ES6 4 2 TR 2 1 Q303 U303 1 L ON H OFF 6 3V VSENSE 5 VCC 3 PROG 4 ISENSE 1 GND 2 DRIVE 6 10V 10UF C317 C318 10UF C316 100K 1 R320 100NF 82K 1 R328 R323 CHG_ON DCVOLT VBATT ICHRG 2 7K BAT_VOLT ...

Page 33: ...10 pin1 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 CN310 pin 1 in a few second After SIM card insert CN310 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 34: ...SFD 1 1 2 2 3 3 4 4 5 5 6 VCC SIMVCC C333 100NF C1 5 4 C1 2 GND MODE 3 6 VIN VOUT 1 LTC1986ES6 U304 R331 750K R332 C322 10UF 6 3V 1M C321 47NF NC C320 R306 C302 NC 5 6 R1 C1 1 R2 V C1 1 2 V C1 2 3 VIN R1 4 100K SIM_5V3V SIMPWDN_BOOT SIMCLK SIMRST SIMDATA FDG6323L U300 ON OFF ...

Page 35: ...Part Microphone does not work Reassemble the MIC to Front Case Check the microphone contact state Check the circuit from MIC or C561 END Resolder the R525 R527 R530 R531 C553 C532 and C538 Yes No Yes Yes No Check the Key PCB Replace the Key PCB No Yes ...

Page 36: ...Flow chart of trouble shooting 5 10 C532 U501 R525 R527 C561 C560 MIC VX 1P C553 R530 VX 1N R531 C538 V C C ...

Page 37: ...ow chart of trouble shooting 5 11 5 6 Speaker Part Receiver does not work Modify the receiver pins Check the depression of the receiver pins Is receiver working Replace the receiver END No Yes Yes Yes No ...

Page 38: ...Input Check Initial operation Replace the PBA Are the pin 1 3 5 and 7 of CN211 low When one of the keys is pushed one of pin 1 3 5 and 7 of CN211 is high Key PCB is OK Resolder pin 1 3 5 and 7 of CN211 END Replace the Key PCB Yes No Yes Yes Yes No No ...

Page 39: ...00 V201 VC040214X300 V206 VC040214X300 U636 VC040214X300 V202 VC040214X300 V203 VC040214X300 V200 VC040214X300 VC040214X300 V208 VC040214X300 V204 KEYBOARD_ROW 0 KEYBOARD_ROW 3 KEYBOARD_COL 3 KEYBOARD_COL 4 KEYBOARD_COL 0 KEYBOARD_COL 1 KEYBOARD_COL 2 KEYBOARD_ROW 1 KEYBOARD_ROW 2 B_LIGHT KEYBOARD_COL 0 4 KEYBOARD_ROW 0 4 VBATT ON_OFF ...

Page 40: ...ing 5 14 5 8 Ring Indicator Ring Indicator LED does not work GPO2 by Test S W Q200 Q202 Q203 pin 2 H Between LED201 and R210 R211 R212 L Check the LED Replace LED201 END Resolder Q200 Q202 Q203 R210 R211 R212 Yes No Yes Yes No No ...

Page 41: ...5 15 Flow chart of trouble shooting Q203 DTC114YE 2 3 1 1 R212 220 5 3 1 Q202 DTC114YE 2 3 DTC114YE Q200 2 100 5 R210 HL500 LED201 1 2 3 4 RI_RED RI_BLUE RI_GREEN LED_3V3 R211 68ohm 5 ...

Page 42: ...e menu Between R215 and R217 H GPO1 by test S W No Yes Yes No Check the circuit related U100 Pin 35 36 39 40 3 3V LCD backlight on Resolder LCD or Check Q201 No Yes No LCD BACKLIGHT KEY PCB LED Resolder R215 R217 Q201 pin 1 H No Yes Resolder Q201 Q201 pin 3 L No Yes Yes END Key PCB LED on Resolder CN211 or Replace Key PCB No CN200 ...

Page 43: ...5 17 Flow chart of trouble shooting R215 1K 100K R217 1 3 2 Q201 MMBT2222AWT1 BACKLIGHT B_LIGHT ...

Page 44: ...Pin 7 Check the circuit contain ing U102 is H YES Check U430 Pin 1 Check the U413 U613 Working YES U430 Pin 15 H Check the R441 U106 YES U430 Pin 14 is workin g Check the R645 R440 C437 well C434 R438 R439 C440 YES CH3 L_spk Change the U430 L_spk wor king YES Change the speaker YES END ...

Page 45: ... R2 1 2 V C1 1 3 V C1 2 4 C409 330PF 3 3NF C499 1M GND 2 1 INA1 3 INA2 OUTY1 6 OUTY2 4 5 VCC R422 C440 NL27WZ04 U413 11K 100NF R404 R439 100K 100NF 6 3V 4 7UF C432 C431 91K 100NF C433 R440 33K R432 3 3K R438 100PF C437 C434 68NF 4 RST WR 28 C430 1NF 18 SPOUT2 SPVDD 15 16 SPVSS SYNC 30 VDD 7 VREF 9 8 VSS IRQ 3 10 HPOUT L MONO HPOUT R 11 IFSEL 5 6 PLLC 31 SCLK 29 SDIN 32 SDOUT SPOUT1 17 22 D5 D6 21 ...

Page 46: ...5 MHz Check IF connector resolder Resolder U602 Pin 10 Check VC1 L VC2 L Resolder U604 C623 L609 Resolder U605 C620 C637 L616 Resolder U634 C621 L606 Check C600 CH 225MHz C636 1080MHz Resolder U612 Resolder U601 C604 C605 L603 C612 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 Yes Yes...

Page 47: ...esolder of Change C651 R607 R608 R609 Resolder or Change U610 At 1150 1185MHz Pin 10 At CH 1080MHz 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 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 Control No Pin 2...

Page 48: ...Check IF connector resolder Resolder U602 Pin 1 Check VC1 L VC2 L Resolder U604 C624 Resolder U605 C646 C647 L620 L618 C700 L607 Resolder U634 C625 L608 Check C600 CH 225MHz C636 1080MHz Resolder U612 Resolder U601 C604 C605 L603 C612 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 Yes Yes...

Page 49: ...C611 Resolder or Change C626 R611 R613 R614 Resolder U610 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 Check Ant S W Control Circuit Check U608 VBATT Pin 2 APC OK Resolder or Change U608 Yes Check VBATT or APC Control No Yes At 1150 1185MHz Pin 10 At CH 1080...

Page 50: ...662 100PF C643 NC L619 C612 C615 1NF 10UF 6 3V 8PF R611 24 C641 10 R637 220 R608 C636 C623 100PF 1NF C670 C659 100PF C631 270PF 560PF L612 R644 10 82nH R601 0 C633 3 3PF L624 6 8nH 10K R639 33PF C640 R633 10K 1 8PF C647 C632 1NF 27PF R615 100 33PF C651 C619 FAR G6CS 1G8425 L250 U634 G1 2 4 G2 G3 6 8 G4 IN1 1 3 IN2 7 OUT1 OUT2 5 36K R606 C624 100PF C648 1NF L605 8 2nH C668 47PF 8 2nH L620 R635 10K ...

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