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Icom IC-F50V Service Manual

Other manuals for IC-F50V: Instruction Manual, Operating Manual
Manual is about: VHF/UHF TRANSCEIVER

Summary of IC-F50V

  • Page 1

    Vhf transceiver s-14406xz-c1 sep. 2007.

  • Page 2

    This service manual describes the latest service information for the ic-f50v/f51v vhf transceiver at the time of publication. Never connect the transceiver to an ac outlet or to a dc power supply that uses more than specified. This will ruin the transceiver. Do not reverse the polarities of the powe...

  • Page 3

    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 m general • frequency coverage : tx/rx 136–174 mhz • number of conventional channels : 128 ch / 8 banks • type of emission : wide 16k0f3e (25.0 khz) middle 14k0f3e (20.0 khz) [eur] only narrow 11k0f3e (12.5 khz) • antenna impedance : 50 Ω (nominal) • operating temperat...

  • Page 5: Section 2

    2 - 1 section 2 inside views cpu clock (x401: cr-764) reset ic (ic408: bd5242g) cpu (ic401: hd64f2268tfv) af power amp (ic405: tda8547ts) expander (ic410: cd4094bpwr) expander (ic12: cd4094bpwr) mic amp (ic407: njm12904v) af buffer, af mixer (ic5: njm12904v) af buffer (ic6: njm12904v) tx power amp (...

  • Page 6: Section 3

    3 - 1 section 3 disassembly instruction 1. Removing the chassis unit q unscrew the ant nut, and remove the vr knob. W remove the vr washer, and unscrew the top screw. E unscrew side screws and washers. R unscrew bottom screws. T take off the chassis unit in the direction of the arrow. Y disconnect t...

  • Page 7: Section 4

    4 - 1 section 4 circuit description while transmitting, serial-connected pin diodes are on, thus the tx line is connected to the antenna, and the rx line is connected to the gnd simultaneously to prevent tx signal entering. The limitter protects rx line from over-level rf inputs, and the bef (=trap)...

  • Page 8

    4 - 2 2nd if and fm demodulator circuits the 2nd if circuits consist of 2nd mixer, 2nd if filter, 2nd if amplifier. And it converts the 1st if signal into the 2nd if signal, then filters to remove unwanted signals and amplifi es. If ic "ta31136fng" contains whole of the 2nd if circuits and fm demodu...

  • Page 9

    4 - 3 4-2 transmitter circuits tx af circuits the tx af circuits consist of microphone amplifier (mic amp) and af fi lters. The af fi lter cuts off the signals except voice signals (300 hz or lower and 3 khz or higher). The audio signals from the internal microphone (mic signals) are passed through ...

  • Page 10

    4 - 4 ctcss/dtcs signals ("cen0"–"cen2") are generated by the cpu (f: ic401, pins 79–81) and converted its wave form by r461–r463 (f), then passed through the lpf (f: ic403, pins 3, 1). The fi ltered ctcss/dtcs signals are then level-adjusted by dac (m: ic6, pins 9, 10) and applied to the af mixer (...

  • Page 11

    4 - 5 transmit amplifiers the transmit amplifiers consist several rf amplifiers (pre- driver, driver, power), and amplify the tx vco output to the transmit output level. The tx vco output is applied to the pre-drive amplifi er via the tx/rx switch. The amplified tx signal is amplified by drive ampli...

  • Page 12

    4 - 6 4-3 frequency synthesizer circuits vcos a vco is an oscillator which its oscillation frequency is determined by the applied voltage. This transceiver has two vcos; rx vco and tx vco. The rx vco generates the 1st lo signals for the 1st if produce, and tx vco generates tx signal. The vco sw togg...

  • Page 13

    4 - 7 viberation motor circuit (except [a], [d], [g], [j]) mf1 is a vibration motor. When the matched rx code signal is received, mf1 rotates to produce viberation. In vibration mode, and when the transceiver is called, "vib" signal from the expander (ic12, pin 6) turns to "high(=vcc level)" and mot...

  • Page 14

    4 - 8 pin no. Line name description i/o 1– 11 seg23–13 lcd segment ports. O 13 seg12 15– 25 seg11–1 26 so serial data to dac (m: ic6) and audio strage ic (m: ic18). O 27 sck serial clock to dac (m: ic6) and audio strage ic (m: ic18). O 28 mdio data i/o for baseband ic (m: ic10). I/o 29 msck clock to...

  • Page 15: Section 5

    5 - 1 section 5 adjustment procedure 5-1 preparation ¤ required equipments equipment grade and range equipment grade and range cloning software cs-f50v cloning software (revision 1.0 or later) jig cable (modifi ed opc- 966c/uc) (see the page 5-3) rf power meter (terminated type) measuring range : 0....

  • Page 16

    5 - 2 ¤ starting software adjustment q connect the transceiver and pc with opc-966/u. (see the page 5-3) w turn the transceiver power on. E boot up windows, and click the program group ‘cs-f50v’ in the ‘programs’ folder of the [start] menu, then cs-f50v’s window appears. (or click the shortcut ‘cs-f...

  • Page 17

    5 - 3 to an rs-232c port jig cable jig cable rs-232c cable (straight) pc caution : attach the [sp mic] jack snugly, but do not overtighten. An overtightened jack will damage the connector pins in the transceiver. Opc-966 (rs-232 c type) opc-966u (usb type) add a jumper wire here opc-966u (usb type c...

  • Page 18

    5 - 4 5-2 frequency adjustment select an adjustment item using [ ↑ ] / [ ↓ ] keys, then set to the specifi ed value using [ ← ] / [ → ] keys on the connected pc’s keyboard. Adjustment [adjust item] adjustment condition operation value pll lock voltage [rx lva] 1 • • channel : 1-1 receiving click [i/...

  • Page 19

    5 - 5 adjustment [adjust item] adjustment condition operation value reference frequency [ref] 1 • channel : 1-2 connect an rf power meter to the antenna connector. Transmitting loosely couple a frequency counter to the antenna connector. 174.000 mhz • • (loose coupling) frequency counter (0.1–300 mh...

  • Page 20

    5 - 6 adjustment [adjust item] adjustment condition operation value transmit output power (hight) [hi] 1 • channel : 1-3 transmitting connect an rf power meter to the antenna connector. 5.0 w • (low2) [l2] 2 • • channel : 1-4 transmitting 2.0 w (low1) [l1] 3 • • channel : 1-5 transmitting 1.0 w 5-3 ...

  • Page 21

    5 - 7 adjustment [adjust item] adjustment condition operation value fm deviation (narrow) [mod(narrow]) 1 • channel : 1-6 connect an audio generator and an ac millivolt- meter to the jig cable (see the page 5-3). Transmitting connect an modulation ana- lyzer to the antenna connector through an atten...

  • Page 22

    5 - 8 adjustment [adjust item] adjustment condition operation value modulation balance (narrow) [bal(narrow]) 1 • • • channel : 1-9 no audio signals are applied to the jig cable. Transmitting connect an oscilloscope to the detect output terminal of the modulation analyzer. Set to the square wave for...

  • Page 23

    5 - 9 adjustment [adjust item] adjustment condition operation value ctcss/dtcs deviation [ctcss/dtcs] 1 • channel : 1-12 no audio signals are applied to the jig cable. Transmitting connect a modulation analyzer to the antenna connector through an attenuator. ±0.66 to 0.70 khz • • 5-3 transmit adjust...

  • Page 24

    5 - 10 adjustment [adjust item] adjustment condition operation value receive sensitivity [bpf t1] 1 • • • channel : 1-13 connect a standard signal generator to the antenna connector. Receiving put the cursor on the [bpf t1], and push the return key. (automatic adjustment) [bpf t2] 2 put the cursor o...

  • Page 25

    5 - 11 adjustment [adjust item] adjustment condition operation value s-meter [s-meter] (s6 level) note: “receive sensitivity” must be adjusted before “s-meter.” otherwise, “s-meter” will not be adjusted properly. 1 • • • • channel : 1-14 connect a standard signal generator to the antenna connector. ...

  • Page 26

    5 - 12 adjustment [adjust item] adjustment condition operation value squelch [sql] 1 • channel : 1-15 connect a standard signal generator to the antenna connector. – set the [sql] value to close squelch. Then set [sql] value at the point where the audio signals just appear. • 5-4 receive adjustment ...

  • Page 27: Section 6

    6 - 1 section 6 parts list m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) [front unit] ref order description m. H/v no. No. Location ic401 1140010191 s.Ic hd64f2268tf20v t 22.9/28 ic403 1110005340 s.Ic njm12902v-te1 t 16.9/42.9 ic405 1110006770 s.Ic tda8547ts/n t 25.8/53...

  • Page 28

    6 - 2 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) [front unit] ref order description m. H/v no. No. Location c466 4030017420 s.Cer ecj0ec1h470j t 36.9/14.5 c467 4030017420 s.Cer ecj0ec1h470j t 30.5/13.1 c468 4030017420 s.Cer ecj0ec1h470j t 40.4/11.5 c473 4030016790 s....

  • Page 29

    6 - 3 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) [main unit] ref order description m. H/v no. No. Location ic1 1110003201 s.Ic ta31136fng (el) b 19.1/9.1 ic2 1110002751 s.Ic ta75s01f (te85r,f) t 52.3/18.1 ic4 1140005991 s.Ic mb15a02pfv1-g-bnd-ere1 b 28.7/24.1 ic5 111...

  • Page 30

    6 - 4 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) [main unit] ref order description m. H/v no. No. Location r98 7030007290 s.Res erj2gej 222 x (2.2 k) b 47/39 r100 7030005050 s.Res erj2gej 103 x (10 k) t 47.1/15.2 r101 7030005120 s.Res erj2gej 102 x (1 k) t 45.5/15.2 ...

  • Page 31

    6 - 5 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) [main unit] ref order description m. H/v no. No. Location c105 4030017460 s.Cer ecj0eb1e102k t 44.5/33.9 c106 4030017420 s.Cer ecj0ec1h470j t 55.1/30.8 c107 4030017460 s.Cer ecj0eb1e102k t 49.3/22.7 c108 4030016790 s.C...

  • Page 32

    6 - 6 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) [main unit] ref order description m. H/v no. No. Location ep3 6910015370 s.Bea acz1005y-102-t b 25.4/35.1 ep4 6910015600 s.Bea acz1005y-241 (240) t 23.9/21.7 ep5 6910015600 s.Bea acz1005y-241 (240) t 14/26.1 ep6 691001...

  • Page 33: Section 7

    Screw abbreviations a, b0, bt: self-tapping ph: pan head zk: black ni-zu: nickel-zinc sus: stainless 7 - 1 section 7 mechanical parts [chassis parts] ref order description qty. No. No. J1 6910014700 2600 ant connector 1 mp1 8010020920 3060 chassis 1 mp2 8950005512 2403 contact spring -2 1 mp3 893005...

  • Page 34

    7 - 2 mp15(c) mp11(c) mp415(f) mp414(f) mp413(f) mp3(a) mp2(a) mp15(c) mp404(f) mp11(c) mp411(f) mp412(f) mp701(co) mp418(f) mp417(f) mp423(f) mp426(f) w401(f) mp12(c) mp12(c) mp12(c) mp12(c) mp12(c) mp3(m) mp18(c)* mf1(m)* mp4(m) mp408(f) sp401(f) ds401(f) mp410(f) r601(v) mp424(f) front unit main ...

  • Page 35: • Front Unit

    • front unit (top view) • vr unit (top view) • connect unit (top view) • main unit (top view) + bat+ bat– – vcc afo afo optv gnd gnd res cli clo mic ptt pwon vron vrin pwon vcc afo afo optv gnd gnd res cli clo mic ptt j403 ecm(mc1) j1 j401 j1 afo optv reset txd ptt vcc mice rxd mic vcc vcc n/c cpu5 ...

  • Page 36: • Front Unit

    8 - 2 s-14406xh-p2 printed in japan © 2007 icom inc. • front unit (bottom view) • vr unit (bottom view) • connect unit (bottom view) • main unit (bottom view) afo optv reset txd ptt vcc mice rxd mic p 0 p 1 p 2 p 3 c1 c2 c3 c4 c5 c6 c7 c8 c9 c10 c11 c12 c13 c14 c15 c16 c24 c31 c35 c36 c41 c44 c48 c4...

  • Page 37: Section 9

    9 - 1 section 9 block diagram lpf lpf lpf ic5 njm12904 lpf lpf xp4601 q6 lpf ic403 njm12902 lpf njm12902 ic403 pwr det d1 rb706f mute sw ma2s111 d25 sw power q26 rsq035p03 eeprom ic409 hn58x24256 reset ic408 bd5242g shift sw d404 m a2s077 ant sw d5:1sv307 d2:1sv307 pwr amp q7 rd07mvs2 tx/rx sw ma2s0...

  • Page 38: Section 10

    10 - 1 section 10 voltage diagram *; refer to “parts list.” 100k r440 0.001 c432 100k r501 10 msva c427 kra304e q407 47p c478 ma2s111 d407 hr yg cl-165hr ds406 470 r455 0.0022 c447 2.2k r439 1 c512 68k r478 47p c466 0.001 c403 100k r524 0.0022 c405 470 r457 47p c462 0.1 c413 150k r522 rsq035p03tr q4...

  • Page 39

    10 - 2 *; refer to “parts list.” 3.33v 3.68mh 1.48vp-p vibration off:0.00v vibration on :4.98v vibration on :3.59v vibration off:0.00v tx:5.01v rx:0.00v tx:0.00v rx:4.97v 5.02v 4.98v 2.2k r131 *c311 0.001 c269 47p c247 *r197 33k r124 cd4094bpwr ic12 1 str 2 d 3 clk 4 q1 5 q2 6 q3 7 q4 8 gnd 9 qs 10 ...

  • Page 40

    10 - 3 *; refer to “parts list.” tx:0.00v rx:4.78v tx:0.00v rx:3.10v tx:0.00v rx:1.24v tx:0.00v rx:4.78v tx:1.69v rx:0.00v tx:2.05v rx:2.14v tx:0.00v rx:4.84v tx:2.53v rx:0.00v tx:4.75v rx:0.00v tx:1.13v rx:0.00v 3.86v 4.04v 3.83v tx:0.00v rx:2.40v tx:2.40v rx:0.00v tx:0.00v rx:1.96v tx:0.00v rx:1.5...

  • Page 41

    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 fax : +33 (5) 61 ...

  • Page 42

    1-1-32, kamiminami, hirano-ku, osaka 547-0003, japan s-14406xz-c1 © 2007 icom inc..