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Icom IC-F40GS Service Manual

Manual is about: including MT Version

Summary of IC-F40GS

  • Page 1

    Uhf transceiver ic-f40gt ic-f40gs ic-f4 1 gt ic-f4 1 gs ( including mt version ).

  • Page 2

    Introduction this service manual describes the latest service information for the ic-f40gt/gs and ic-f41gt/gs uhf transceiver at the time of publication. To upgrade quality, all electrical or mechanical parts and inter- nal circuits are subject to change without notice or obligation. Danger never co...

  • Page 3

    L-band 400–430 mhz m-band ml-band 440–480 mhz mh-band 450–490 mhz h-band h1-band 480–512 mhz h2-band 480–520 mhz table of contents explicit definitions section 1 specifications section 2 inside views section 3 disassembly instructions section 4 circuit description 4 - 1 receiver circuits ..............

  • Page 4

    Measurement method frequency coverage type of emission number of conventional channels power supply requirement current drain (approx.) frequency error usable temperature range dimensions (proj. Not included) weight (approx.) rf output power modulation system maximum permissible deviation spurious e...

  • Page 5

    2 - 1 section 2 inside views • front unit bottom view • main unit top view • main unit bottom view key led switch (q1, q2: 2sc4116bl) lcd module (ds10: edmmud1fa0) internal speaker switch circuit (q6, q7: cph3403, q8: 2sc4081, q9: dtc144eua) expander ic (ic1: tc74vhc373ft) power detector (d2, d3: rb...

  • Page 6

    3 - 1 section 3 disassembly instructions 1 removing the chassis panel 2 removing the shield plate 3 removing the main unit 4 removing the front unit q remove 2 knobs a , and unscrew 1 nut b . W unscrew 1 screw c (icom screw), and 2 screws d (2 × 4 mm, black) from the 9-pin connector. E unscrew 2 scr...

  • Page 7

    4-1 receiver circuits 4-1-1 antenna switching circuit 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. Received signals enter the antenna connector (ch...

  • Page 8

    4 - 2 4-1-5 af amplifier circuit the af amplifier circuit amplifies the demodulated af sig- nals to drive a speaker. The af signals from the fm if ic (ic3, pin 9) are amplified at the af amplifier section of the compander ic (ic9, pins 5, 4) and are then applied to the high-pass filter circuit (ic10...

  • Page 9

    4 - 3 4-2-4 apc circuit the apc circuit (ic4, q22) protects the ygr (ic-f41gt/gs only), drive and power amplifiers from excessive current drive, and selects output power of high, low2 or low1. The apc detector circuit detects forward signals and reflec- tion signals at d3 and d2 respectively. The co...

  • Page 10

    4 - 4 4-4 ffsk circuit description 4-5-1 general ic9 is the compounder ic which is controlled by serial data bus line (“trd”, “mske”, “din”, “sck”, “apst”, “regs1”, “regs2”, “rtm”, “rdt”, “fclr” signals) from the cpu. The ic is composed of ffsk transmitting and receiving cir- cuits, data register ci...

  • Page 11

    4 - 5 4- 5 power supply circuit voltage line 4- 6 port allocations 4- 6 -1 cpu (ic14) 4- 6 -2 i/o expander (ic23) line hv vcc cpu5v +5v s5v t5v r5v description the voltage from the attached battery pack. The same voltage as the hv line (battery volt- age) which is controlled by the power swtich ([vo...

  • Page 12

    5 - 1 5-1 preparation 5-1-1 conventional version when you adjust the contents on pages 5-7 to 5-9, software adjustment, the optional cs-f30g adj adjustment soft- ware (rev. 1.0 or later), *opc-966 jig cable (modified opc-966 cloning cable ) are required. ■ required test equipment section 5 adjustmen...

  • Page 13

    5 - 2 cs-f30g adj rev.1.0 file com 1: open option connect reload (f5) disp para [a / d] vin : 197 : c5h : 7.73 v temps : 190 : beh : 32.23 'c lvin : 67 : 43h : 1.31 v sd : 27 : 1bh : 0.53 v bdet : 0 : 00h : 0.00 v (ni-cd, ni-mh) power (hi) : 98 [ # # # # # # # # – – – – – – – – – – – ] power (l2) : ...

  • Page 14

    5 - 3 5-1-2 mpt version when you adjust the contents on pages 5-7 to 5-9 software adjustment, the optional cs-f40g adj adjustment soft- ware (rev. 1.0 or later), *opc-966 jig cable (modified opc-966 cloning cable ) are required. And all adjustments in this sec- tion must be performed at conventional...

  • Page 15

    5 - 4 cs-f40g adj rev.1.0 file com 1: open option connect reload (f5) disp para [a / d] vin : 197 : c5h : 7.73 v temps : 190 : beh : 32.23 'c lvin : 67 : 43h : 1.31 v sd : 27 : 1bh : 0.53 v bdet : 0 : 00h : 0.00 v (ni-cd, ni-mh) power (hi) : 98 [ # # # # # # # # – – – – – – – – – – – ] power (l2) : ...

  • Page 16

    5 - 5 + + – audio generator 300 hz to 3 khz ac millivoltmeter sp+ sp– mice mic ptt ptte add a jumper wire here • *opc-966 (jig cable) electrolytic capacity 47 µ f opc-966 (cloning cable) sinad meter speaker (8 Ω ) audio generator • connection (common) to the antenna connector rf power meter 0.1–10 w...

  • Page 17

    5 - 6 5-2 pll adjustment pll lock voltage 1 2 3 4 • operating freq. : 400.000 mhz [l] 440.000 mhz [ml] 450.000 mhz [mh] 480.000 mhz [h] • receiving • transmitting • operating freq. : 430.000 mhz [l] 480.000 mhz [ml] 490.000 mhz [mh] 520.000 mhz [h] • receiving • transmitting main connect a digital m...

  • Page 18

    5 - 7 5-3 software adjustment select an operation using [ ↑ ] / [ ↓ ] keys, then set specified value using [ ← ] / [ → ] keys on the connected computer keyboard. 1 1 2 3 1 1 2 • operating freq. : 430.000 mhz [l] 480.000 mhz [ml] 490.000 mhz [mh] 512.000 mhz [h1] 520.000 mhz [h2] • output power : low...

  • Page 19

    5 - 8 *the output level of the standard signal generator (ssg) is indicated as the ssg’s open circuit. Note: after “rx sensitivity” adjustment is finished, “s-meter (or rssi l0/l2—[mpt])” adjustment (at page 5-9) must be re-adjusted. Software adjustment – continued select an operation using [ ↑ ] / ...

  • Page 20

    5 - 9 software adjustment – continued select an operation using [ ↑ ] / [ ↓ ] keys, then set specified value using [ ← ] / [ → ] keys on the connected computer keyboard. “s-meter (or rssi l0/l2—[mpt])” adjustment must be performued after “rx sensitivity” adjustment (at page 5-8) is finished. *the ou...

  • Page 21

    [front unit] [front unit] ic1 1130009860 s.Ic tc74vhc373ft (el) t ic2 1110002750 s.Ic ta75s01f (te85r) t q1 1530002850 s.Transistor 2sc4116-bl (te85r) t q2 1530002850 s.Transistor 2sc4116-bl (te85r) t q3 1590002150 s.Transistor dtc144te tl t q4 1590002150 s.Transistor dtc144te tl t q5 1590002150 s.T...

  • Page 22

    [main unit] [main unit] ic1 1130009130 s.Ic sa7025dk-t t ic2 1130008560 s.Ic tc75s51f (te85l) b ic3 1110003490 s.Ic ta31136fn (d,el) b ic4 1130008560 s.Ic tc75s51f (te85l) t ic5 1110001810 s.Ic ta7368f (er) b ic6 1110002750 s.Ic ta75s01f (te85r) t ic7 1110002750 s.Ic ta75s01f (te85r) b ic8 113000856...

  • Page 23

    [main unit] [main unit] l49 6200003960 s.Coil mlf1608a 1r0k-t b l50 6200005700 s.Coil eljre 22ng-f t l51 6200005590 s.Coil eljre 2n7z-f other b 6200006770 s.Coil eljre 1n5z-f [m], [h] b 6200006780 s.Coil eljre 1n8z-f [l]-f41g, [l]-biis b l53 6200007920 s.Coil eljrf 15njf2 [f41g], [biis] only t l54 6...

  • Page 24

    [main unit] [main unit] r162 7030005070 s.Resistor erj2gej 683 x (68 k Ω ) b r163 7030005060 s.Resistor erj2gej 333 x (33 k Ω ) b r164 7030005110 s.Resistor erj2gej 224 x (220 k Ω ) b r165 7030005600 s.Resistor erj2gej 273 x (27 k Ω ) b r166 7030005530 s.Resistor erj2gej 100 x (10 Ω ) t r167 7030005...

  • Page 25

    [main unit] [main unit] r372 7030005060 s.Resistor erj2gej 333 x (33 k Ω ) t r373 7030005040 s.Resistor erj2gej 472 x (4.7 k Ω ) t r374 7030005240 s.Resistor erj2gej 473 x (47 k Ω ) t r375 7030005040 s.Resistor erj2gej 472 x (4.7 k Ω ) t r376 7030008410 s.Resistor erj2gej 392 x (3.9 k Ω ) b r377 703...

  • Page 26

    [main unit] [main unit] c118 4030013850 s.Ceramic ecue1e102kbq b c121 4030016930 s.Ceramic ecj0eb1a104k b c123 4030014200 s.Ceramic ecue1h101jcq b c124* 4550006700 s.Tantalum ecst1ay106r t c125 4030014200 s.Ceramic ecue1h101jcq b c126 4030014220 s.Ceramic ecue1e471kbq t c127* 4550006170 s.Tantalum e...

  • Page 27

    [main unit] [main unit] c276 4030014150 s.Ceramic ecue1h220jcq b c277 40300114100 s.Ceramic ecue1h070ccq b c278 4030009820 s.Ceramic c1005 jb 1e 103k-t-a t c279 4030009820 s.Ceramic c1005 jb 1e 103k-t-a t c280 4030014170 s.Ceramic ecue1h330jcq t c282 4030014180 s.Ceramic ecue1h470jcq t c283 40300141...

  • Page 28

    [main unit] c458 4030014200 s.Ceramic ecue1h101jcq t c459 4030017420 s.Ceramic ecj0ec1h470j [f41g], [biis] only b c460 4030017630 s.Ceramic ecj0ec1h120j [f41g], [biis] only t c461 4030017380 s.Ceramic ecj0ec1h050b [f41g], [biis] only t c462 4030017380 s.Ceramic ecj0ec1h050b [f41g], [biis] only t c46...

  • Page 29

    7 - 1 section 7 mechanical parts and disassembly mp1 8210017211 2337 front panel-1 assembly [gt] 1 8210017350 2337 s-front panel assembly [gs] 1 mp2 8310049450 2337 window plate 1 mp4 8930052850 2337 release button 1 mp5 8930052970 2337 ptt plate 1 mp8 8210017100 2337 rear panel 1 mp9 8210017080 233...

  • Page 30

    7 - 2 note (m): main unit ( f ): front unit (c): chassis parts front unit main unit mp1 (c) mp1 (c) mp2 (c) mp58 (c) mp29 (c) mp13 (c) ds10 (f) sp1 (f) mp9 (c) mp51 (c) ic-f40gs and ic-f41gs parts mp50 (c) mp22 (c) mp37 (c) mp61 (c) mp20 (c) mp26 (c) mp19 (c) mp5 (c) mp57 (c) mp59 (c) mp41 (c) mp40 ...

  • Page 31

    8 - 1 section parts list section 8 semi-conductor information 8 - 1 transistors and fets 8 - 2 diodes name symbol inside view 1ss355 a 1sv307 tx a c 1ss375 fh ma742 m1u rb706f-40 3j hsu88trf 9 ma111 1b ma2s111 a a c a c dan202u n c a1 a2 ma8030-h 3^0 ma8033-h 3^3 ma8062-m 6-2 a c dap202u p a1 c2 c1 ...

  • Page 32

    1 p0 p1 p2 p3 4 7 2 5 8 0 3 6 9 # ✽ microphone 9 - 1 9 - 1 front unit section 9 board layouts • top view the combination of this page and the next page shows the unit layout in the same configuration as the actual p.C. Board..

  • Page 33

    Gnd spcn d0 frst ptt d5 d4 d3 d2 d1 rdb wrb rs gnd resb vcc kr0 kr1 kr2 kr3 mic+ sp+ gnd +5v d7 d6 nc d6 vr1 vee3 nc d1 d2 d3 d4 d5 d7 osc0 osc1 vss pmode vdd vee cap– cap+ vee2 1 5 10 15 20 25 30 35 40 vout vr2 scl wrb rdb d0 m86 vs/te resb csb rs m/s p/s v1 v2 v3 nc nc v0 v4 lcd ptt f2 f3 f3 f0 to...

  • Page 34

    S1 cp1 cp3 cp2 ant battery+ r193 gnd spcn d0 frst ptt d5 d4 d3 d2 d1 rdb wrb rs gnd resb vcc kr0 kr1 kr2 kr3 mic+ sp+ gnd +5v d7 d6 to front unit j1 1 26 8 7 2 4 5 6 9 afo vcc detect mice reset xrxd xtxd mic ptt 3 1 8 7 2 4 5 6 9 3 1 1 2 3 4 5 6 int sp sw af vr power sw ch select opt2 opt1 1 5 10 15...

  • Page 35

    S1 cp3 r193 8 7 2 4 5 6 9 3 1 8 7 2 4 5 6 9 3 1 1 2 3 4 5 6 int sp sw af vr power sw ch select ptt mic xtxd xrxd reset mice detect vcc afo mp67 (chassis)... [h-band] only f40g (main unit) • bottom view the combination of this page and the previous page shows the unit layout in the same configuration...

  • Page 36

    S1 cp1 cp3 cp2 ant battery+ r193 8 7 2 4 5 6 9 afo vcc detect mice reset xrxd xtxd mic ptt 3 1 8 7 2 4 5 6 9 3 1 1 2 3 4 5 6 int sp sw af vr power sw ch select opt2 opt1 1 5 10 15 16 20 25 30 1 5 10 15 16 20 25 30 universal connector mp6 opc-966 em-80 ad-52 hs-93 gnd spcn d0 frst ptt d5 d4 d3 d2 d1 ...

  • Page 37

    S1 cp3 r193 8 7 2 4 5 6 9 3 1 8 7 2 4 5 6 9 3 1 1 2 3 4 5 6 int sp sw af vr power sw ch select ptt mic xtxd xrxd reset mice detect vcc afo f41g (main unit) • bottom view the combination of this page and the previous page shows the unit layout in the same configuration as the actual p.C. Board. 9 - 6.

  • Page 38

    10 - 1 section 10 bc-137 optional desktop charger informasion ref. No. Oder no. Description qty. Mp1 8010018030 2338 case 1 mp2 8110007080 2338 cover 1 mp3 8930050920 2327 spacer 1 mp4 8930039620 leg cushion (a) 4 mp5 8810008660 screw bt m3 x 8 ni-zu 1 [chassis unit] 10-1 parts list 10-2 disassembly...

  • Page 39

    10 - 2 10-3 voltage diagram 10-4 board layout j2 j1 q1 2sb1201 s r5 10 k d2 1ss184 r1 24 r2 24 w1 charge+ gnd temp ds1 tlg124a c4 0.1 r6 27 c2 0.1 r7 2 k r8 2 k r9 56 k r10 10 k r4 10 k q4 2sc2712 gr c3 0.1 q2 rn2404 r3 27 d1 1ss355 q3 rn1409 d3 ma8056 m r11 1 k c1 0.1 13.80 v 12.49 v 12.47 v 11.82 ...

  • Page 40

    11 - 1 section 11 block diagram 400-520 mhz d2,d3 rb706f-40 q1 2sk2974 d1: d24, d25: 1sv307 ma77 q2 2sk2973 q3 2sc3585 main unit main unit q5 2sc5107 vco sw vcos d4, d5: ma77 q6 2sc5107 q8 2sc5107 q9: dtc144eu q10: xp1214 rx vco q13 2sc4116 q11 2sc4226 s5v lvin buff q14 2sk880 ic1 sa7025 x1 cr-667 i...

  • Page 41

    Opv21 opv22 opv23 fclr mske rgs2 main unit mapd dsin lv flac n pll clock 1 data 2 strobe 3 vss 4 rfin 5 rfin 6 vccp 7 refin 8 ra 9 auxin 10 pha 11 vssa 12 phi 13 php 14 vdda 15 rn 16 rf 17 lock 18 test 19 vdd 20 ic1 sa7025 dk-t q14 2sk880 r46 12k r49 47k r50 1k r51 10k c102 0.0047 c109 0.1 cp7 c100 ...

  • Page 42

    12 - 2 note [ gt ]: ic-f40 gt /f41 gt [ f40 g]: ic- f40 gt/ f40 gs [l] : l-band 400–430 mhz [h] : h-band 480–512/480–520 mhz [ gs ]: ic-f40 gs /f41 gs [ f41 g]: ic- f41 gt/ f41 gs [ml] : ml-band 440–480 mhz [m] : ml and mh bands [mh] : mh-band 450–490 mhz ant filter r1 82k r2 180 c4 0.001 cp2 c5 470...

  • Page 43

    Asia icom inc. 6f no.68, sec. 1 cheng-teh road, taipei, taiwan, r.O.C. Phone : +886 (02) 2559 1899 fax : +886 (02) 2559 1874 url : http://www.Asia-icom.Com e-mail : sales@asia-icom.Com zac de la plaine, 1, rue brindejonc des moulinais bp 5804, 31505 toulouse cedex, france phone : +33 (5) 61 36 03 03...

  • Page 44

    1-1-32, kamiminami, hirano-ku, osaka 547-0003, japan s-13803mz-c1- 2 c 2001-2003 icom inc..