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Icom IC-F3GS Service Manual

Manual is about: Icom Marine Radio User Manual

Summary of IC-F3GS

  • Page 1

    Service manual 6-9-16, kamihigashi, hirano-ku, osaka, 547-0002, japan s-13605ii-cd © 1999 icom inc. Vhf fm transceivers.

  • Page 2

    6-9-16, kamihigashi, hirano-ku, osaka 547-0002, japan phone : 06 6793 5302 fax : 06 6793 0013 communication equipment himmelgeister str. 100, d-40225 düsseldorf, germany phone : 0211 346047 fax : 0211 333639 url : http://www.Icomeurope.Com unit 9, sea st., herne bay, kent, ct6 8ld, u.K. Phone : 0122...

  • Page 3

    Table of contents section 1 specifications section 2 inside views section 3 disassembly and option instructions 3-1 disassembly instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 1 3-2 optional unit installations . . . . . . . . . . . . . . . ....

  • Page 4: Section 1

    1 - 1 section 1 specifications ‘ ‘ general • frequency coverage : 136.000–150.000 mhz • type of emission : 16k0f3e (w-type), 8k50f3e (n-type) • number of channels : 32 ch (16 channels × 2 banks: 2-bank version), 16 ch (16 channel version) • power supply requirement : 7.2 v dc (negative ground; suppl...

  • Page 5: Section 2

    2 - 1 section 2 inside views • main unit power amplifier (q1: 2sk2974) antenna swtching circuit (d1, d2, d8: ma77) top view bottom view rf amplifier (q12: 3sk293) vco circuit 1st mixer (q13: 3sk239a) low-pass filter circuit tx/rx switch (d3, d4: ma77) mic amplifier circuit apc ic3a: njm2902v q37: dt...

  • Page 6: Section 3

    3 - 1 section 3 disassembly and option instructions 3-1 disassembly instruction • removing the chassis panel 1 unscrew 1 nut a , and remove 1 knob b . 2 unscrew 2 screws c . 3 take off the chassis in the direction of the arrow. 4 unplug j6 to separate front panel and chassis. • removing the main uni...

  • Page 7

    3 - 2 3-2 optional unit installations 1 remove the option cover. 2 remove the bottom protective paper of spoge. 3 connect one of ut-96, ut-105, ut-109, ut-110, ut-111, and ut-108 optional unit j5. 4 replace the option cover to the chassis-hole. Sponge parts name : 1556 sponge order no. : 8930013545 ...

  • Page 8: Section 4

    4 - 1 section 4 circuit description 4-1 receiver circuits 4-1-1 antenna switching circuit received signals are passed through the low-pass filter (l1, l2, c1–c5, c8). The filtered signals are applied to the λ ⁄ 4 type antenna switching circuit (d2, d8). The antenna switching circuit functions as a l...

  • Page 9

    4 - 2 4-1-5 af circuit af signals from the fm if ic (ic2, pin 9) are applied to the mute switch (ic4, pin 1) via the af filter circuit (ic3b, pins 6, 7). The output signals from pin 11 are applied to the af power amplifier (ic5, pin 4) after being passed through the [vol] control (r143). The applied...

  • Page 10

    4 - 3 when the driving current is increased, input voltage of the differential amplifier (pin 2) will be increased. In such cases, the differential amplifier output voltage (pin 1) is decreased to reduce the driving current. 4-3 pll circuit a pll circuit provides stable oscillation of the transmit f...

  • Page 11

    4 - 4 4-5 port allocations 4-5-1 cpu (ic8) pin number 1 9 11 12 15 16 17 18 19 21 36–38 44–47 49 50 51 52 53 54 55 56 57 58 59 port name vin reset csift sck dast clin clout plst nois busy opv3– opv1 kr3– kr0 rmut mmut duse s5c r5c t5c txc afon ligt esck esda description input port for battely voltag...

  • Page 12

    5-1 preparation when you adjust the contents on page 5-5 or 5-6, software adjustment, the optional cs-f3g adj adjustment software (rev. 1.0 or later), opc-478 cloning cable and a jig cable (see illustration at page 5-2) are required. ■ required test equipment 5 - 1 section 5 adjustment procedures eq...

  • Page 13

    5 - 2 • jig cable + ( clone) – ( gnd) + ( sp) – ( spe) 3-conductor 3.5(d) mm plug opc-478 jig cable to ic-f3gt/gs [sp] jack cs-f3g adj rev.1.0 file com 1: open option connect reload (f5) disp para tcxo [a / d] vin : : : 189 bdh 7 . 41v temps : : : 186 bah 30 . 35'c lvin : : : 98 62h 1 . 92v ch no. :...

  • Page 14

    5 - 3 to an rs-232c port personal computer to [mic] to [sp] jig cable db9 female plug (incl. Level converter circuit) • connection to the antenna connector rf power meter 0.1–10 w/50 Ω frequency counter attenuator 40 db or 50 db fm deviation meter standard signal generator 0.1 µ v to 32 mv (–127 dbm...

  • Page 15

    5 - 4 5-2 pll adjustment pll lock voltage 1 2 • operating frequency: 146.000 mhz • receiving • transmitting main connect a digital multi meter to check point lv. 2.0 v 1.5–2.5 v main l11 verify adjustment adjustment conditions unit location value unit adjust measurement adjustment l11 pll lock volta...

  • Page 16

    5 - 5 1 2 1 2 1 1 • operating frequency: 146.000 mhz • high/low switch : low • connect the rf power meter or 50 Ω dummy load to the antenna connector. • transmitting • transmitting • operating frequency: 146.000 mhz • high/low switch : low • transmitting • high/low switch : high • transmitting • ope...

  • Page 17

    5 - 6 minimum distortion level 12 db sinad at the point where the audio signals just appears. 1 • operating frequency: 146.000 mhz • connect a standard signal generator to the antenna connector and set as: frequency : 146.000 mhz level : 3.2 µv* (–97 dbm) modulation : 1 khz deviation : ±3.5 khz (w-t...

  • Page 18: Section 6  Parts List

    6 - 1 s.=surface mount ic1 1130007610 s.Ic µpd3140gs-e1 (ds8) ic2 1110003490 s.Ic ta31136fn (d,el) ic3 1110003780 s.Ic njm2902v-te1 ic4 1130008090 s.Ic bu4066bcfv-e1 ic5 1110001810 s.Ic ta7368f (tp1) ic6 1180001740 s.Ic tk11250bmcl ic7 1130009680 s.Ic hn58x2432ti ic8 1140003750 s.Ic hd6473877h (z-ta...

  • Page 19

    6 - 2 s.=surface mount r58 7030003680 s.Resistor erj3geyj 104 v (100 k Ω ) r59 7030003400 s.Resistor erj3geyj 471 v (470 Ω ) r61 7030003280 s.Resistor erj3geyj 470 v (47 Ω ) r62 7030003680 s.Resistor erj3geyj 104 v (100 k Ω ) r63 7030003680 s.Resistor erj3geyj 104 v (100 k Ω ) r64 7030003680 s.Resis...

  • Page 20

    6 - 3 s.=surface mount r241 7030003800 s.Resistor erj3geyj 105 v (1 m Ω ) r242 7030003800 s.Resistor erj3geyj 105 v (1 m Ω ) r243 7030003800 s.Resistor erj3geyj 105 v (1 m Ω ) r244 7030003680 s.Resistor erj3geyj 104 v (100 k Ω ) r245 7030003680 s.Resistor erj3geyj 104 v (100 k Ω ) r246 7030003680 s....

  • Page 21

    6 - 4 s.=surface mount c156 4030011600 s.Ceramic c1608 jb 1c 104kt-n c158 4550006200 s.Tantalum ecst0jy106r c159 4030006850 s.Ceramic c1608 jb 1h 471k-t-a c160 4030006900 s.Ceramic c1608 jb 1e 103k-t-a c161 4030006900 s.Ceramic c1608 jb 1e 103k-t-a c162 4030006900 s.Ceramic c1608 jb 1e 103k-t-a c163...

  • Page 22: Section 7

    Section 7 mechanical parts and disassembly 7 - 1 ref. No. Oder no. Description qty. Mp1 8210016750 2251-t front panel [f3gt] 1 8210016740 2251-s front panel [f3gs] 1 mp2 8930050890 2251 terminal holder 1 mp3 8010017990 2251 chassis 1 mp4 8210016570 2251 rear panel 1 mp5 8930050870 2251 release butto...

  • Page 23

    7 - 2 unit abbreviation (c): chassis parts, (m): main unit mp4 (m) main unit ic-f3gs parts mp7 (c) mp1 (c) mp1 (c) mp20 (c) mp37 (c) mp21 (c) mp3 (m) ds1 (m) ep2 (m) mp1 (m) mp2 (m) mp18 (c) mp40 (c) mp22 (c) mp32 (c) mp5 (m) mp23 (c) mp12 (c) mp3 (c) mp32 (c) mp13 (c) mp13 (c) mp27 (c) mp10 (c) mp2...

  • Page 24

    Section 8 semi-conductor information 8 - 1 2sc5085 y (symbol: mcy) 2sk2974 (symbol: k2974) 2sk1069 4 (symbol: fj4) 2sc4116 gr (symbol: lg) 2sa1577 q (symbol: hq) 3sk239 a (symbol: xr) 2sc4215 o (symbol: qo) 2sk2973 (symbol: k1) dtc144 tu (symbol: 06) dtc144 eu (symbol: 26) un911 h (symbol: 6p) xp650...

  • Page 25

    Section 9 board layouts 9 - 1 main unit • top view ds1 mc1 ds2 ds3 r204 r205 r155 r170 c215 r169 c233 c234 c295 r208 c211 r257 c286 c301 r175 r249 r151 r264 r186 r185 c293 r35 c55 c64 r89 c56 r90 r81 r80 r79 r84 r13 c26 c24 c25 r15 r12 r11 r10 c23 r14 r16 r177 c136 r114 r117 c137 r115 c217 c133 c134...

  • Page 26

    9 - 2 • bottom view c277 r252 c138 r258 r143 j2 j3 mp5 s1 s3 q21 q22 l25 x1 ic10 ic7 ic8 c198 ic12 q33 r236 r238 r237 s2 c158 c155 fi2 c174 c173 c72 c298 c281 l4 l2 l1 l16 l17 l24 d29 l31 c287 c285 c8 c3 c18 c76 r96 r95 r75 l20 l19 c105 c106 c109 c104 r94 r70 r72 c97 c98 c94 l29 c99 c169 l21 c101 c1...

  • Page 27

    10 - 1 section 10 bllock diagram ant lpf lpf ant sw d1: ma77 d2: ma77 d8: ma77 q1: 2sk2974 q2: 2sk2973 q3: 2sc5085 y d3: ma77 d4: ma77 pll ic q4: 2sc4215 o q6: 2sc4215 o ic1: upd3140gs vco q7: 2sc5085 y q8: 2sc5085 y ref x1: cr-664 (15.3 mhz) option unit j5 axn330c038 2tone or 5tone ptt mic af reg a...

  • Page 28

    Vcc r5 s5 mic cpu5 vcc 5v t5 r5 s5 volin volout afout mic sp vcc cpu5 5v t5 r5 s5 cpu5 s5 t5 r5 cpu5 c223 0.01 c224 0.01 d r131 470 q17 un911h r130 100 c147 0.1 ptt c154 10 c 8 9 10 ic3c njm2902v c133 0.1 c209 0.1 r177 1 k c125 0.0022 c124 0.01 c217 0.1 r176 3.9 k r93 27 k r109 10 k c134 220 p r104 ...

  • Page 29: Complete View

    Vcc r178 3.9 k c129 15 r120 68 k r145 1 m r99 12 k r100 1.8 k d26 dan202k q15 2sb1132 r r126 10 k c149 0.1 c146 0.001 c145 10 r122 2.7 k 4 5 6 3 2 1 q16 xp6501 ab c140 0.1 r121 1 k c139 0.1 nc 1 vcc 2 nc 3 vin 4 ripple 5 nf 6 phase 7 pregnd 8 pwgnd 9 pout 10 ic5 ta7368f c171 0.1 r123 3.3 k r128 10 c...

  • Page 30

    Ant r160 150 l26 3225 µ h vcc t5 r13 33 r15 100 t5 vcc r28 100 r27 470 c39 0.001 r19 100 r21 100 r23 100 c46 0.001 1 3 2 4 5 6 q11 xp6501 ab r31 1 k r175 1 r151 47 k c233 0.001 cp1 (lv check ponit) r30 4.7 k c50 10 c300 0.001 c301 0.001 c211 0.1 r185 1 k r45 100 q34 2sk1069 4 r184 10 k c234 0.001 r1...

  • Page 31

    Vcc r5 s5 mic cpu5 vcc 5v t5 r5 s5 volin volout afout mic sp vcc cpu5 5v t5 r5 s5 cpu5 s5 t5 r5 cpu5 c223 0.01 c224 0.01 d r131 470 q17 un911h r130 100 c147 0.1 ptt c154 10 c 8 9 10 ic3c njm2902v c133 0.1 c209 0.1 r177 1 k c125 0.0022 c124 0.01 c217 0.1 r176 3.9 k r93 27 k r109 10 k c134 220 p r104 ...

  • Page 32

    6-9-16, kamihigashi, hirano-ku, osaka 547-0002, japan phone : 06 6793 5302 fax : 06 6793 0013 communication equipment himmelgeister str. 100, d-40225 düsseldorf, germany phone : 0211 346047 fax : 0211 333639 url : http://www.Icomeurope.Com unit 9, sea st., herne bay, kent, ct6 8ld, u.K. Phone : 0122...

  • Page 33: Service

    Service manual 6-9-16, kamihigashi, hirano-ku, osaka, 547-0002, japan s-13605ii-cd © 1999 icom inc. Vhf fm transceivers.