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Icom IC-F43TR Service Manual

Manual is about: UHF TRUNKED RADIO (LTR®/Passport version)

Summary of IC-F43TR

  • Page 1

    Service manual uhf trunked radio f43tr.

  • Page 2

    Introduction danger ordering parts repair notes this service manual describes the latest service information for the ic-f43tr uhf trunked radio at the time of pub- lication. Never connect the transceiver to an ac outlet or to a dc power supply that uses more than 8 v. Such a connection could cause a...

  • Page 3

    Table of contents section 1 specifications section 2 inside views section 3 disassembly instructions section 4 circuit descripiton 4-1 receiver circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4-2 transmitter circuits . . . . . . ...

  • Page 4: Section 1

    1 - 1 section 1 specifications ‘ ‘ general • frequency coverage : 400.000–470.000 mhz [h] 450.000–512.000 mhz [l] • mode : fm • type of emission : 16k0f3e (25.0 khz) wide 11k0f3e (12.5 khz) narrow • number of conventional channels : 250 ch • antenna connector : 50 Ω • operating temperature range : –...

  • Page 5: Section 2

    Section 2 inside views • main unit 2 - 1 • pa unit mute switch (d29: ma2s111) pll ic (ic21: lmx2352tm) base band ic (ic14: ak2346) eeprom (ic10: 24lc64t) cpu (ic22: hd64f2238btf13) r5 regulator (q25: 2sa1577) if ic (ic9: ta31136fn) af amplifier (ic15: ta7568f) apc amplifier (ic16: ta75s01f) if ampli...

  • Page 6: Section 3

    Section 3 disassembly instructions 3 - 1 chassis unit e a b c d f shield cover main unit k k j j l j i g h chassis unit m n n • removing the chassis unit 1 unscrew 1 nut a, and remove 2 knobs b,c. 2 unscrew 2 screws d. 3 unscrew 2 screws e. 4 take off the chassis unit in the direction of the arrow. ...

  • Page 7: Section 4

    4 - 1 section 4 circuit description 4-1 receiver circuits 4-1-1 antenna switching circuit (pa unit) the antenna switching circuit functions as a low-pass filter while receiving and a resonator circuit while transmitting. This circuit does not allow transmit signals to enter the receiver circuits. Re...

  • Page 8

    4 - 2 4-1-5 af amplifier circuit (main unit) the af amplifier circuit amplifies the demodulated af sig- nals to drive a speaker. This transceiver employs the base band ic which is composed of pre-amplifier, expander, scrambler, msk de-modulator, etc. At the af amplifier sec- tion. The af signals fro...

  • Page 9

    4 - 3 4-2-2 modulation circuit (main unit) the modulation circuit modulates the vco oscillating signal (rf signal) using the microphone audio signals. The af signals from the d/a converter (ic12, pin 3) change the reactance of varactor diode (d12) to modulate the oscil- lated signal at the tx vco ci...

  • Page 10

    4 - 4 the pll ic contains a prescaler, programmable counter, programmable divider and phase detector, etc. The entered signal is divided at the prescaler and programmable counter section by the n-data ratio from the cpu. The divided signal is detected on phase at the phase detector using the refer- ...

  • Page 11

    4 - 5 4-5 other circuits 4-5-1 compounder circuit (main unit) ic-f43tr have compounder circuit which can improve s/n ratio and become wide dynamic range to suppress the transmitting signal and to extend receiving signal. The circuit is composed of the base band ic (ic14). (1) in case of transmitting...

  • Page 12

    4 - 6 4-6-2 cpu (main unit; ic22) input port for the noise signal from the fm if ic (ic9, pin 13). Outputs serial data to the pll ic (ic21, pin 15) and d/a convertor (ic12, pin 8). Outputs serial clock signal to the pll ic (ic21 pin 14), d/a convertor (ic12, pin 7), etc. Input port for the cloning d...

  • Page 13

    5 - 1 section 5 adjustment procedures 5-1 preparation when adjusting ic-f43tr, the optional cs-f43tr adj adjustment software (rev. 1.0 or later), opc-478 cloning cable and a jig cable (see illustration at page 5-3) are required. ■ required test equipment ■ system requirements • microsoft ® windows ®...

  • Page 14

    Ch frequency adjustment item ch frequency adjustment item low band high band low band high band 5 - 2 485.000 mhz 520.000 mhz 450.000 mhz 450.000 mhz 485.000 mhz 485.000 mhz cs-f43tr adj rev.1.0 file com 1: open option connect reload (f5) disp para [a / d] vin : 199 : c7h : 7.80 v temps : 183 : b7h ...

  • Page 15

    5 - 3 opc-478 jig cable to ic-f43tr [sp] jack 3-conductor 3.5(d) mm plug ( + sp) ( + clone) ( – gnd) ( – spe) fm deviation meter sinad meter speaker (8 Ω) audio generator ac millivoltmeter to the antenna connector attenuator 40 db or 50 db rf power meter 0.1–10 w/50 Ω frequency counter standard sign...

  • Page 16

    5 - 4 5-2 software adjustment (transmitting) select an operation using [ ↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard. 1 2 3 4 1 1 2 1 1 2 • operating ch. : ch2 • receiving • operating ch. : ch2 • transmitting • operating ch. : ch6 • receiving • ope...

  • Page 17

    5 - 5 *the output level of the standard signal generator (ssg) is indicated as the ssg’s open circuit. Software adjustment (receiving) • select an operation using [ ↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard. • need to adjust “s-meter adjustment” ...

  • Page 18: Section 6

    [main unit] [main unit] ic6 1110006350 s.Ic lm2902pwr b ic8 1110005770 s.Ic s-80942cnmc-g9c-t2 b ic9 1110003200 s.Ic ta31136fn (el) t ic10 1130011580 s.Ic 24lc64t-i/sn b ic12 1190001350 s.Ic m62364fp 600d b ic13 1130006220 s.Ic tc4w53fu (te12l) b ic14 1110006220 s.Ic ak2346-e2 b ic15 1110001810 s.Ic...

  • Page 19

    [main unit] r89 7030005050 s.Resistor erj2gej 103 x (10 k Ω) t r90 7030005170 s.Resistor erj2gej 474 x (470 k Ω) t r91 7030005240 s.Resistor erj2gej 473 x (47 k Ω) t r92 7030005310 s.Resistor erj2gej 124 x (120 k Ω) t r93 7030005060 s.Resistor erj2gej 333 x (33 k Ω) b r95 7030005030 s.Resistor erj2g...

  • Page 20

    [main unit] [main unit] r515 7030005120 s.Resistor erj2gej 102 x (1 k Ω) t r516 7030005090 s.Resistor erj2gej 104 x (100 k Ω) b c17 4550007120 s.Tantalum f92 1d 224mpa t c18 4030017510 s.Ceramic ecj0ec1h680j b c19 4030017350 s.Ceramic ecj0ec1h020b b c21 4030017590 s.Ceramic ecj0ec1h070c b c22 403001...

  • Page 21

    [main unit] [main unit] c302 4030016790 s.Ceramic ecj0eb1c103k t c303 4030017490 s.Ceramic c1608 jb 1a 105k-t t c308 4550007090 s.Tantalum teesva 1a 226m8r b c309 4030017490 s.Ceramic c1608 jb 1a 105k-t b c310 4030017490 s.Ceramic c1608 jb 1a 105k-t b c312 4030016780 s.Ceramic ecj0eb1c153k b c314 40...

  • Page 22

    [pa unit] [pa unit] q701 1560001230 s.Fet rd07mvs1 b q702 1560001240 s.Fet rd01mus1 b q703 1530000370 s.Transistor 2sc3356-t1b t q704 1530003260 s.Transistor 2sc5006-t1 t d701 1750000580 s.Diode 1sv307 (tph3) t d702 1790001670 s.Diode rb706f-40t106 t d703 1790001670 s.Diode rb706f-40t106 b d704 1790...

  • Page 23: Section 7

    Section 7 mechanical parts and disassembly 7 - 1 sp1 2510001060 k036na500-47 1 w1 8900009640 opc-963 1 j1 6910015910 antenna connector 1 j2 6910015860 imsa-6277s-02a-g 1 mp1 8010019451 2721 chassis-1 1 mp2 8210020530 2721 t-front panel [10 key] 1 8210020730 2721 s-front panel [4 key] 1 mp8 821002055...

  • Page 24

    7 - 2 unit abbreviation (c): chassis parts, (m): main unit mp25(c) mp30(c) mp29(c) mp33(c) mp20(c) sp1(c) mp12(c) mp21(c) mp34(c) mp10(c) mp9(c) mp2(c) mp2(c) mp12(c) w1(c) main unit 4-keypad version 10-keypad version mp28(c) mp37(c) mp46(c) mp39(c) mp42(c) mp4(m) mp7(m) ds3(m) mp3(m) mp22(c) mp28(c...

  • Page 25

    Section 8 semi-conductor information 8 - 1 • diodes • transistor and fet’s 2sa1577 q (symbol: hp) xp1214 (symbol: 9h) rd01mus1 (symbol: k2) rd07mvs1 (symbol: rd07mvs1) unr9113j (symbol: 6c) unr9213j (symbol: 8c) unr9210j (symbol: 8l) xp6501 ab (symbol: 5n) 3sk299 u73 (symbol: u73) 2sc4226 r25 (symbo...

  • Page 26

    R272 c386 c387 c388 r295 c149 c412 c332 c379 r38 r5 r6 c321 c327 r234 c331 c76 r2 r227 r226 c323 c322 c188 c72 r507 r45 c394 r308 r110 c145 r91 c132 r92 r124 r86 c144 c400 c138 c155 r87 r88 r46 ep11 r95 r89 r101 r18 c302 c390 c161 r359 c56 c57 r174 c36 r21 r22 c185 c184 r15 c154 c153 c152 r347 r348 ...

  • Page 27

    • bottom view c395 r131 c177 c21 c32 c30 c369 c25 c22 c29 c39 r96 c45 c28 c27 c18 r13 c33 c40 c19 c175 r123 c156 c398 c415 c134 c126 r85 c115 r79 r307 c209 r41 c105 r75 c116 c117 ep1 c104 c118 c401 c121 c123 r84 c192 c191 c133 c129 c124 r306 c113 c114 c208 c206 l32 c205 c103 r304 c120 c119 c106 c107...

  • Page 28

    C725 c726 c727 c755 c712 c711 l704 d702 r702 c744 l709 c745 c708 c705 c701 r715 c732 ep712 q704 l707 q703 ep711 c763 c762 r712 c731 c735 l708 c760 c759 c733 c761 c758 c734 c718 r706 r704 mp1 l703 d705 c742 d701 9 - 3 9-2 pa unit • top view l801 ant gnd tx b6140b c805 j1(chassis unit) c804 l802 c803 ...

  • Page 29

    9 - 4 • bottom view • bottom view r726 c752 r701 c713 r727 c729 l705 r710 c723 q702 b6107b c750 c751 c753 d704 l701 c707 j702 r703 c754 d703 q701 r728 r708 j701 p_det gnd vcc c720 c756 c722 c715 c716 c719 c724 l706 f701 c757 c702 c703 l712 tx gnd 1 3 t5v apc tx j701 to the main unit vcc vcc to the f...

  • Page 30

    Section 10 block diagram 10 - 1 notes : contorol line common line tx line rx line data lime voltage line lpf lpf lpf ic6: njm12902 lpf ic19: njm12902 lpf ic6: njm12902v lpf ic6: njm12902v det pwr d702: rb706f mute sw d29: ma2s111 eeprom ic10: 24lc64t reset ic8: s-80942cnmc-g9c shift sw d6: ma77 ant ...

  • Page 31

    Section 11 voltage diagram 11 - 1 11-1 main unit r510 47 k r93 33 k r514 100 k +5v c35 0.0022 r512 8.2 k ic14 ak2346 9 10 11 12 24 23 22 21 agndin agnd txin txino limlv extlmin mod vss tclk tdata di/o rdf/fc test rxin rxino rxlpfo rxaf rxafin expout vdd xin xout dir sclk r513 47 k 24 23 22 21 20 19 ...

  • Page 32

    11 - 2 15.3 mhz 1.2vp-p t: 0.0 r: 4.8 t: 0.0 r: 0.3 t: 0.8 r: 1.2 t: 0.0 r: 4.8 t: 0.0 r: 4.8 t: 0.0 r: 0.9 t: 1.5 r: 1.6 t: 1.6 r: 1.4 c: 3.8 c: 3.6 t: 0.0 r: 2.0 t: 0.0 r: 4.6 t: 0.0 r: 4.4 t: 0.0 r: 1.8 t: 0.0 r: 0.6 c: 4.0 t: 0.0 r: 5.0 t: 0.0 r: 4.9 t: 5.0 r: 0.0 c: 5.0 t: 2.0 r: 0.0 c: 6.9 vcc...

  • Page 33

    11-2 pa / ant / fuse units t: 1.7 r: 0.0 t: 0.7 r: 0.0 t: 0.7 r: 0.0 t: 5.0 r: 0.0 t: 0.9 r: 0.0 t5v apc tx j701 to the main unit vcc pdet gnd p_det gnd vcc c733 3 p c761 0.5 p q704 2sc5006 t5v c731 3 p c762 0.5 p c729 3 p q702 rd01mus1 l706 exccl3225u c720 39 p r704 10 c708 0.001 l703 0.4–0.9–2tl l...

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    1-1-32, kamiminami, hirano-ku, osaka, 547-0003, japan s-14016iz-c1 © 2004 icom inc..