Icom IC-F43GS Service Manual Download Page 11

Page: 11 / 57

Sep. 2008

C707

Q701

L701

C702

C703

R701

C715

L 7 0 6

MP701

L 7 0 4

Q702

C734

D702

R706

C723

C718

C724

R703

R710

C701

C725

R704

C752

t o _ L P F

D704

L 7 0 9

C742

J 7 0 2

1
2

Q704

C708

Q703

C753

R726

D703

C754

D701

L705

C716

C722

C726

C727

C732

C719

R728

C713

C711

L 7 0 3

C755

C756

J 7 0 1

PDET

GND

VCC

C751

L 7 1 2

F701

VCC1

C757

D705

C744

C760

C705

C733

L708

C735

C731

R715

C761

C762

EP712

EP711

R712

R727

R708

C763

C766

C767

C758

C759

R705

C721

C745

C709

C712

C750

C729

C720

R702

L707

GND

T5V

APC

P_DET

T5V

VCC

T5V

APC

P_DET

RX
GND

L P F

APC

P_DE T

(F U S E U N I T )

To MAIN UNIT

From MAIN UNIT

Power High 2.67 V
Power Low 1.84 V

(Measurement frequency 400 MHz )

Voltage in TX

Voltage in RX

NOTE:

Refer to “PARTS LIST” for the value or component name.

• PA UNIT

Summary of Contents for IC-F43GS

Page 1: ...04 12 400 470 MHz GEN 01 6 GEN 02 7 450 520 MHz AUS 02 10 CHN 01 11 400 470 MHz CHN 02 1 IC F44GT Ten key SEA 01 13 400 470 MHz 12 5 25 0 kHz MTE 01 3 EUR 01 8 12 5 20 0 25 0 kHz IC F43GS 4 key MTG 0...

Page 2: ...TION L8 6200007690 S COL LQW2BHN18NJ03L 5 7 10 16 19 21 24 only B 93 7 37 L9 6200007680 S COL LQW2BHN12NJ03L B 87 7 38 2 L11 6200007680 S COL LQW2BHN12NJ03L B 85 9 33 8 L12 6200007921 S COL ELJRF 15NJ...

Page 3: ...473 X 47 k B 53 6 18 7 R213 7030005040 S RES ERJ2GEJ 472 X 4 7 k B 51 8 20 8 R214 7030005240 S RES ERJ2GEJ 473 X 47 k B 50 2 20 6 R215 7030005070 S RES ERJ2GEJ 683 X 68 k B 59 20 7 R216 7030005070 S R...

Page 4: ...0R5B except 5 7 10 16 19 21 4 6 3 6 8 8 B 4 2 C41 4030017640 S CER ECJ0EC1H150J B 87 31 9 C42 4030017460 S CER ECJ0EB1E102K T 89 1 40 2 S Surface mount MAIN UNIT REF PARTS DESCRIPTION M H V O N O N LO...

Page 5: ...C205 4030017380 S CER ECJ0EC1H050B B 79 9 33 1 C206 4030017590 S CER ECJ0EC1H070C B 78 1 33 9 C206 4030017620 S CER ECJ0EC1H100C B 78 1 33 9 C208 4030017590 S CER ECJ0EC1H070C B 78 1 34 9 C208 403001...

Page 6: ...S DIO 1SV307 TPH3 F T 33 9 12 8 D702 1790001670 S DIO RB706F 40T106 T 28 8 17 8 D703 1790001670 S DIO RB706F 40T106 B 30 9 13 6 D704 1790001260 S DIO MA2S077 TX B 29 3 18 D705 1790001240 S DIO MA2S72...

Page 7: ...nly T 5 9 14 7 C763 4030017420 S CER ECJ0EC1H470J T 10 7 17 3 C766 4030017460 S CER ECJ0EB1E102K 3 5 7 8 9 10 16 17 19 21 22 23 24 only T 9 9 20 3 C767 4030017420 S CER ECJ0EC1H470J 3 5 7 8 9 10 16 17...

Page 8: ...C145 C146 C148 C149 C150 C152 C153 C154 C155 C160 C161 C162 C163 C164 C165 C166 C168 C169 C176 C184 C185 C186 C188 C193 C302 C303 C321 C322 C323 C325 C326 C327 C328 C329 C330 C331 C332 C333 C334 C337...

Page 9: ...C309 C310 C312 C314 C315 C316 C317 C318 C319 C320 C324 C335 C336 C338 C339 C340 C345 C346 C347 C348 C349 C350 C351 C352 C 3 5 3 C354 C355 C356 C357 C359 C360 C369 C371 C377 C378 C380 C395 C396 C397 C3...

Page 10: ...R307 R74 R73 R282 R123 R235 R236 R224 R295 R309 R223 R221 R205 R204 R203 R292 R293 R1 R222 R321 R323 R325 R327 R329 R331 R333 R335 R336 R337 R338 R339 R340 R341 R342 R343 R344 R319 R318 R320 R345 R346...

Page 11: ...5 PDET GND VCC C751 L712 F 7 0 1 1 2 VCC1 C757 D705 C744 C760 C705 C733 L 7 0 8 C735 C731 R715 C761 C762 E P 7 1 2 E P 7 1 1 R712 R727 R708 C763 C766 C767 C758 C759 R705 C721 C745 C709 C712 C750 C729...

Page 12: ...04 12 400 470 MHz GEN 01 6 GEN 02 7 450 520 MHz AUS 02 10 CHN 01 11 400 470 MHz CHN 02 1 IC F44GT Ten key SEA 01 13 400 470 MHz 12 5 25 0 kHz MTE 01 3 EUR 01 8 12 5 20 0 25 0 kHz IC F43GS 4 key MTG 0...

Page 13: ...LOCATION L8 6200007690 S COL LQW2BHN18NJ03L 5 7 10 16 19 21 24 only B 93 7 37 L9 6200007680 S COL LQW2BHN12NJ03L B 87 7 38 2 L11 6200007680 S COL LQW2BHN12NJ03L B 85 9 33 8 L12 6200007921 S COL ELJRF...

Page 14: ...473 X 47 k B 53 6 18 7 R213 7030005040 S RES ERJ2GEJ 472 X 4 7 k B 51 8 20 8 R214 7030005240 S RES ERJ2GEJ 473 X 47 k B 50 2 20 6 R215 7030005070 S RES ERJ2GEJ 683 X 68 k B 59 20 7 R216 7030005070 S R...

Page 15: ...21 24 B 88 6 36 4 C41 4030017640 S CER ECJ0EC1H150J B 87 31 9 C42 4030017460 S CER ECJ0EB1E102K T 89 1 40 2 S Surface mount MAIN UNIT REF PARTS DESCRIPTION M H V NO NO LOCATION C43 4030017460 S CER EC...

Page 16: ...26 T 66 9 31 5 C205 4030017380 S CER ECJ0EC1H050B B 79 9 33 1 C206 4030017590 S CER ECJ0EC1H070C B 78 1 33 9 C206 4030017620 S CER ECJ0EC1H100C B 78 1 33 9 C208 4030017590 S CER ECJ0EC1H070C B 78 1 34...

Page 17: ...00581 S DIO 1SV307 TPH3 F T 33 9 12 8 D702 1790001670 S DIO RB706F 40T106 T 28 8 17 8 D703 1790001670 S DIO RB706F 40T106 B 30 9 13 6 D704 1790001260 S DIO MA2S077 TX B 29 3 18 D705 1790001240 S DIO M...

Page 18: ...y T 5 9 14 7 C763 4030017420 S CER ECJ0EC1H470J T 10 7 17 3 C766 4030017460 S CER ECJ0EB1E102K 3 5 7 8 9 10 16 17 19 21 22 23 24 only T 9 9 20 3 C767 4030017420 S CER ECJ0EC1H470J 3 5 7 8 9 10 16 17 1...

Page 19: ...0 Q21 Q22 Q41 Q42 Q43 Q45 Q46 Q503 R1 R4 R5 R6 R7 R8 R9 R14 R15 R17 R18 R19 R21 R22 R23 R31 R32 R38 R40 R43 R44 R45 R46 R80 R86 R87 R88 R89 R90 R91 R92 R95 R98 R100 R101 R110 R111 R115 R116 R124 R127...

Page 20: ...16 D17 D19 D20 D21 D23 D24 D25 D28 EP1 EP3 EP4 EP5 FI2 IC6 IC8 IC10 IC12 IC13 IC14 IC17 IC19 IC22 IC23 IC24 IC25 J2 J3 J5 J6 J7 L7 L8 L9 L11 L12 L13 L21 L22 L25 L31 L32 L37 L41 L46 L49 MP1 Q5 Q6 Q7 Q1...

Page 21: ...R74 R73 R282 R123 R235 R236 R224 R295 R309 R223 R221 R205 R204 R203 R292 R293 R1 R222 R321 R323 R325 R327 R329 R331 R333 R335 R336 R337 R338 R339 R340 R341 R342 R343 R344 R319 R318 R320 R345 R346 R347...

Page 22: ...3 4 5 PDET GND VCC C751 L712 F 7 0 1 1 2 VCC1 C757 D705 C744 C760 C705 C733 L 7 0 8 C735 C731 R715 C761 C762 E P 7 1 2 E P 7 1 1 R712 R727 R708 C763 C766 C767 C758 C759 R705 C721 C745 C709 C712 C750 C...

Page 23: ...S 14108IZ C1 q Apr 2007 UHF TRANSCEVER iC f43gt iC f43gs iC f44gt iC f44gs...

Page 24: ...1 12 5 20 0 25 0 kHz Be sure to include the following four points when ordering replacement parts 1 10 digit Icom parts numbers 2 Component name 3 Equipment model name and unit name 4 Quantity require...

Page 25: ...S 5 1 5 2 TRANSMITTER CIRCUITS 5 2 5 3 PLL CIRCUITS 5 4 5 4 POWER SUPPLY CIRCUITS 5 4 5 5 OTHER CIRCUITS 5 5 5 6 PORT ALLOCATIONS 5 5 SECTION 6 ADJUSTMENT PROCEDURES 6 1 PREPARATION 6 1 6 2 FREQUENCY...

Page 26: ...F44GT GS 0 25 W 1 GHz 1 0 W 1 GHz F44GT GS Adjacent channel power 70 dB min Wide Middle 60 dB min Narrow Audio harmonic distortion 3 typical at 1 kHz 40 deviation Limiting charact of modulator 60 100...

Page 27: ...IC9 TA31136FN AF amplifier IC15 TA7368F APC amplifier IC16 TA75S01F IF amplifier Q7 2SC4215 O TX RX switch D16 1SV307 D17 MA2S077 5 Regulator IC17 NJM2870 T5 Regulator Q24 2SA1577 Q D A converter IC12...

Page 28: ...it REMOVING THE PA UNIT 1 Unscrew 3 screws M 2 Unsolder 4 points N and take off the PA unit in the direction of the arrow REMOVING THE MAIN UNIT 1 Unscrew 2 nuts G and remove the top plate H 2 Remove...

Page 29: ...1 T U I I k n u r T r a m S D R A O B C I G O L S 7 1 1 T U 7 1 1 T U r o G 3 k n u r T r a m S D R A O B C I G O L i d o m d r a o b C P e m o s s e r i u q e r on n o i t a l l a t s n i l a n o i...

Page 30: ...i u c r i c c i m X T e h t t a B C P e h t n o n r e t t a p e h t t u C t h g i r t a n w o h s s a C S I D t i u c r i c F A X R t 1 T U 5 0 1 T U e h t l l a t s n I above d e b i r c s e d s a S...

Page 31: ...ncy By changing the PLL frequency only the desired frequency passes through a crystal filter at the next stage of the 1st mixer The RF signals from the bandpass filter are mixed with the 1st LO signal...

Page 32: ...r section in the FM IF IC IC9 pin 8 The active filter section filters and amplifies noise components The amplified signals are converted into the pulse type signals at the noise detector section The d...

Page 33: ...The output signal from the D A converter IC12 pin 11 are mixed with MOD signal after pass through the low pass filter IC6 The mixed siganls are applied to the D A converter IC12 pin 3 4 and are then...

Page 34: ...the drift in the oscillated frequency 5 3 2 VCO CIRCUITS MAIN UNIT The VCO circuits contains a separate RX VCO Q17 D9 D11 and TX VCO Q16 D10 D12 D13 The oscillated signal is amplified at the buffer am...

Page 35: ...e filtered signals pass through or bypass scrambler section and are then applied to the expander circuit to expand AF signals The signals are applied to the base band IC s amplifier section IC14 pins...

Page 36: ...ference oscillator cor recting voltage The voltage is applied to the buffer amplifier IC24 pin3 Outputs strobe signals to the PLL IC IC21 pin 16 Outputs the FM PM modulation switching signal to the FM...

Page 37: ...ON e Boot up Windows and click the program group CS F33G ADJ in the Programs folder of the Start menu then CS F33G ADJ s window appears r Click Connect on the CS F33G s window then appears the transc...

Page 38: ...0 FM deviation Wide Middle NOTE 1 CTCSS DTCS deviation 2 Squelch level 3 Reference frequency 4 Receive sensitivity automatic 5 PLL lock voltage for RX automatic 6 PLL lock voltage for TX automatic 7 P...

Page 39: ...rator AC millivoltmeter to the antenna connector Attenuator 20 dB or 30 dB RF power meter 0 1 10 W 50 Frequency counter Standard signal generator 0 1 V to 32 mV 127 dBm to 17 dBm CAUTION DO NOT transm...

Page 40: ...2 IF bandwidth Narrow Push P0 while transmitting Operating CH CH4 Set the FM deviation meter as HPF OFF LPF 20 kHz De emphasis OFF Detector P P 2 Connect the audio generator to the MIC connector and...

Page 41: ...lation 1 kHz Deviation 3 5 kHz Receiving Set the SSG as Level 0 45 V 114 dBm Receiving Operating CH CH7 Connect the SSG to the antenna con nector and set as Frequency 470 000 MHz L 520 000 MHz H Level...

Page 42: ...200004951 S COL NLV25T 1R8J T 70 5 24 4 L28 6200012640 S COL ELJFC R82MH T 69 27 7 L31 6200007720 S COL LQW2BHN33NJ03L B 100 9 35 9 L32 6200007911 S COL ELJRF 18NJFB B 78 3 32 9 L33 6200004480 S COL M...

Page 43: ...5000 S RES ERJ2GEJ 471 X 470 B 36 6 20 7 MAIN UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION R256 7510001730 S TMR ERTJOEP 473J B 20 32 9 R257 7030005090 S RES ERJ2GEJ 104 X 100 k B 19 33 9 R258 7030...

Page 44: ...8 19 7 MAIN UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION C133 4030017640 S CER ECJ0EC1H150J B 70 3 24 3 C134 4030017630 S CER ECJ0EC1H120J e t u 3 5 7 B 69 9 31 8 4030017640 S CER ECJ0EC1H150J q w...

Page 45: ...20 S CER ECJ0EC1H100C t y 5 6 T 94 6 28 5 C421 4550006780 S TAN TEESVB2 0J 476M8R B 30 5 41 2 C422 4550006780 S TAN TEESVB2 0J 476M8R B 55 6 15 4 C423 4030017730 S CER ECJ0EB1E471K T 84 9 29 9 C424 40...

Page 46: ...30 S CER C1608 CH 1H 150J T except r y i 4 6 8 T 20 7 13 8 4030009910 S CER C1608 CH 1H 040B T r y i 4 6 8 T 20 7 13 8 C756 4030017460 S CER ECJ0EB1E102K B 17 5 13 1 C757 4030017460 S CER ECJ0EB1E102K...

Page 47: ...010430 screw truss M3X5 SUS SSBC 1 MP32 8930063052 2721 PLATE 2 1 MP33 8930046020 1123 SHEET A 1 1 MP34 8930056540 Push spring AH 2 MP35 8830001701 VR NUT Q 1 1 MP36 8830001690 VR NUT R 1 MP37 8510016...

Page 48: ...C PA Unit FUSE Unit MP28 C ANT Unit MP1 C J1 C MP36 C MP35 C MP17 C MP8 C MP31 C MP13 C MP14 C MP16 C MP27 C MP26 C MP26 C MP10 C MP9 C J2 C J2 M J3 M MP1 M S2 M MP2 C MP12 C W1 C MP32 C Unit mm inch...

Page 49: ...R 9 R 4 1 R R15 7 1 R R18 9 1 R R21 R22 3 2 R 1 3 R 2 3 R R38 0 4 R 3 4 R 4 4 R R45 R46 0 8 R R86 R87 R88 R89 0 9 R R91 R92 R95 8 9 R 0 0 1 R R101 R110 1 1 1 R R115 6 1 1 R R124 7 2 1 R 0 3 1 R 2 7 1...

Page 50: ...I 9 1 C I 2 2 C I 3 2 C I IC24 IC25 2 J 3 J 5 J 6 J J7 L7 L8 9 L 1 1 L 2 1 L 3 1 L 1 2 L 2 2 L L25 1 3 L 2 3 L L37 L41 L46 L49 1 P M 5 Q Q6 7 Q Q14 5 1 Q Q16 Q17 Q24 Q25 Q26 7 2 Q Q28 9 2 Q 8 3 Q 0 4...

Page 51: ...RD01MUS1 ATT GATE CTRL Q4 2SK1829 AMP IC19 NJM12904V MC1 PTT PTT DET Q43 UN9112J AF VOL LPF IC23 NJM12904 X2 CR 781 15 3 MHz TCXO T5 REG Q24 2SA1577 REG R5 Q25 2SA1577 S5 REG Q26 2SB1132 Q27 XP6501 F...

Page 52: ...DOWN S3 SW 167 S4 SW 167 S21 S22 S25 S26 S23 S24 S7 S9 S10 S11 S13 S14 S15 S17 S18 S19 IC10 24LC64T I SN 4 3 2 1 5 6 7 8 VSS A2 A1 A0 SDA SCL WP VCC R292 100 k R293 10 k C354 0 1 R205 100 k R204 100...

Page 53: ...P C139 0 1 R78 100 k L22 22 nH C105 0 001 R75 150 k L41 33 nH C103 2 P 2 5 P C205 5 P R5V C111 47 P R80 10 k EP1 C104 0 001 R87 390 470 C113 0 75 P C120 470 P C121 10 P L 12 P H C133 10 P D13 HVC350B...

Page 54: ...705 EXCCL3225U R708 220 C723 0 001 R710 4 7 k C734 470 P C758 0 1 F44G 1 F43G C718 0 001 R706 4 7 k C713 30 P C712 12 P C755 15 P C711 5 P R702 1 5 k C705 8 P C703 0 001 C702 47 P R727 1 5 k 1 k R701...

Page 55: ...1 VO 2 GND 3 CD 4 VOR 5 VIN R50 ERJ12 JPW L2 0 47 ERJ12 JPW CP2 CP1 C20 560 0 01 0 0015 RSQ035P03TR Q2 1 2 3 4 5 6 R47 MCR10 JPW MCR10 JPW R39 MCR10 JPW R40 R51 MCR10 JPW R41 MCR10 JPW R43 MCR10 JPW...

Page 56: ...COMAMERICA COM USTOMER 3ERVICE 0HONE LENWOOD ENTRE IGHWAY ELTA 6 ANADA 0HONE AX 52 HTTP WWW ICOMCANADA COM MAIL INFO ICOMCANADA COM 5NIT ARDEN 2OAD LAYTON 6 USTRALIA 0HONE AX 52 HTTP WWW ICOM NET AU M...

Page 57: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14108IZ C1 q 2004 2007 Icom Inc...

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