1. DL manuals
  2. Icom
  3. Transceiver
  4. IC-F3GS
  5. Service Manual

Icom IC-F3GS Service Manual

Manual is about: Icom Marine Radio User Manual

Summary of IC-F3GS

  • Page 1

    Service manual 1-1-32, kamiminami, hirano-ku, osaka, 547-0003, japan s-13713iz-cd © 2000 icom inc. Vhf fm transceivers.

  • Page 2

    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 : 01227 741741 fax : 01227 741742 url : http://www.Icomuk.Co.Uk zac de la plaine, rue brindejonc des...

  • 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

    1 - 1 section 1 specifications all stated specifications are subject to change without notice or obligation. Frequency coverage type of emission number of channels power supply requirement tx at high current drain at low (approx.) rx rated audio stand-by frequency stability usable temperature range ...

  • Page 5

    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

    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 connect one of ut-96, ut-105, ut-108, ut-109, ut-110, and ut-111 optional unit j5. 3 replace the option cover to the chassis-hole. Option cover option unit j5.

  • Page 8

    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.2.0 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 : 98 : 62h : 1.92 v sd : 0 : 00h : 0...

  • 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 : 136.000 mhz (h-band) 146.000 mhz (h-band) • 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 measuremen...

  • Page 16

    5 - 5 1 2 1 2 1 1 • operating frequency: 136.000 mhz (l-band) 146.000 mhz (h-band) • high/low switch : low • connect the rf power meter or 50 Ω dummy load to the antenna connector. • transmitting • transmitting • operating frequency: 136.000 mhz (l-band) 146.000 mhz (h-band) • high/low switch : low ...

  • Page 17

    5 - 6 minimum distortion level 12 db sinad at the point where the audio signals just appears. 1 • operating frequency: 136.000 mhz (l-band) 146.000 mhz (h-band) • connect a standard signal generator to the antenna connector and set as: frequency : 136.000 mhz (l-band) : 146.000 mhz (h-band) level : ...

  • Page 18

    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 [other] 1140008650 s.Ic hn58x2464ti ...

  • Page 19

    6 - 2 s.=surface mount r29 7030005120 s.Resistor erj2gej 102 x (1 k Ω ) r30 7030003520 s.Resistor erj3geyj 472 v (4.7 k Ω ) r31 7030003440 s.Resistor erj3geyj 102 v (1 k Ω ) r32 7030003410 s.Resistor erj3geyj 561 v (560 Ω ) r33 7030003480 s.Resistor erj3geyj 222 v (2.2 k Ω ) r34 7030003200 s.Resisto...

  • Page 20

    6 - 3 s.=surface mount r218 7030003690 s.Resistor erj3geyj 124 v (120 k Ω ) r219 7030003690 s.Resistor erj3geyj 124 v (120 k Ω ) r220 7030003730 s.Resistor erj3geyj 274 v (270 k Ω ) r221 7030003740 s.Resistor erj3geyj 334 v (330 k Ω ) r222 7030003560 s.Resistor erj3geyj 103 v (10 k Ω ) r223 70300036...

  • Page 21

    6 - 4 s.=surface mount c114 4030008900 s.Ceramic c1608 jb 1c 333k-t-a c115 4030006900 s.Ceramic c1608 jb 1e 103k-t-a c116 4030007120 s.Ceramic c1608 ch 1h 820j-t-a n 4030007140 s.Ceramic c1608 ch 1h 121j-t-a w c117 4030006860 s.Ceramic c1608 jb 1h 102k-t-a c118 4030006900 s.Ceramic c1608 jb 1e 103k-...

  • Page 22

    [main unit] s.=surface mount w5 8900009640 cable opc-963 w7 7030003860 s.Jumper erj3ge jpw v w8 7030003860 s.Jumper erj3ge jpw v ep1 0910051877 pcb b 5386g [other] 0910053541 pcb b 5571a e ep2 8930051310 lcd contact srcn-2251-sp-n-w c1 4010000740 ceramic dd104 ch 150 j 50v e only 6 - 5 ref order des...

  • Page 23

    6 - 6.

  • Page 24

    Section 7 mechanical parts and disassembly 7 - 1 ref. No. Oder no. Description qty. Mp1 8210016540 2251 t-front panel [f3gt] 1 8210016670 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 25

    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 26

    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) 2sb1132 r (symbol: barb) 3sk239 a (symbol: xr) 2sc4215 o (symbol: qo) 2sk2973 (symbol: k1) dtc144 tu (symbol: 06) dtc144 eu (symbol: 26) u...

  • Page 27

    Section 9 board layouts 9 - 1 9-1 ets/cept version • main unit (top view) ds1 v h f mc1 ds2 ds3 r204 r205 r155 r170 c215 r169 c233 c234 c295 r208 c21 1 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 r1 1 r10 c23 r14 r16 r177 c136 r11...

  • Page 28

    9 - 2 • main unit (bottom view) c277 r252 c138 r258 r143 mp5 s1 fi2 fi1 s1 s3 q21 q22 l25 x1 ic10 ic7 ic8 c198 ic12 r236 r238 r237 s2 c158 c155 fi2 c174 c173 c72 c298 c281 l4 l2 l1 l16 l17 l24 d29 l31 c287 c285 c284 c8 c3 c18 c76 r96 r95 r75 l20 l19 c105 c106 c109 c104 r94 r70 r72 c97 c98 c94 l29 c9...

  • Page 29

    9 - 3 9-2 other version • main unit (top view) ds1 vhf mc1 ds2 ds3 r204 r205 r155 r170 c215 r169 c233 c234 c295 r208 c21 1 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 r1 1 r10 c23 r14 r16 r177 c136 r114 r117 c137 r115 c217 c133 c1...

  • Page 30

    9 - 4 • main unit (bottom view) c277 r252 c138 r258 r143 fi2 fi1 j2 j3 mp5 s1 s3 s2 mp6 x1 s1 s3 q21 q22 l25 x1 ic10 ic7 ic8 c198 ic12 q40 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 ...

  • Page 31

    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 32

    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 33

    11 - 1 section 11 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 option unit j5 axn330c038 2tone or 5tone ptt mic af reg af amp ptt cont q17: un...

  • Page 34

    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 d34 ma8056 m c224 0.01 d r131 470 q17 un911h r130 100 k c147 0.047 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...

  • Page 35

    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 36

    R160 150 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 k r151 47 k cp1 (lv check ponit) r30 4.7 k c50 10 c300 0.001 c301 0.001 c211 0.1 r45 100 q34 2sk1069 4 r184 10 k c63 39 p c64 4 p t5 r5 s5 vcc 49 k c69 68 p d7 1...

  • Page 37

    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 d34 ma8056 m c224 0.01 d r131 470 q17 un911h r130 100 k c147 0.047 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...

  • Page 38

    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 : 01227 741741 fax : 01227 741742 url : http://www.Icomuk.Co.Uk zac de la plaine, rue brindejonc des...

  • Page 39: Service

    Service manual 1-1-32, kamiminami, hirano-ku, osaka, 547-0003, japan s-13713iz-cd © 2000 icom inc. Vhf fm transceivers.