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Icom IC-R6 Service Manual

Manual is about: Communications Receiver

Summary of IC-R6

  • Page 1

    S-14622xz-c1 feb. 2010 communications receiver.

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    This service manual describes the latest technical information for the ic-r6 communications receiver, at the time of publication. Never connect the receiver to an ac outlet or to a dc power supply that uses more than specified. This will ruin the transceiver. Do not expose the receiver to rain, snow...

  • Page 3

    Table of contents section 1 specifications section 2 inside views section 3 disassembly instruction section 4 circuit descripiton 4-1 receiver circuits (rf unit). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4-2 af circuits (logic unit) . . . . . . ...

  • Page 4: Section 1. Specifications

    1 - 1 section 1. Specifications • frequency coverage : (unit: mhz) usa 0.100–821.995, 851.000–866.995, 896.000–1309.995 france 0.100–29.995, 50.200–51.200, 87.500–107.995, 144.000–146.000, 430.000–440.000, 1240.000–1300.000 other than above 0.100–1309.995 • number of memory channels : 1300 • frequen...

  • Page 5: Section 2. Inside

    2 - 1 section 2. Inside views • logic unit (top view) voltage limiter (d511) tone filter (ic200) cpu (ic1) ifv line sw (q104) logic3.3v regulator (q103) +5 v regulator (ic455) +3 v regulator (ic104) reset (ic3).

  • Page 6

    2 - 2 dc-dc converter up converter circuit for tuning voltage • logic unit (bottom view) af filter (q301) af pre-amp (q300) ci-v level converter (ic452) speaker mute sw (q507) +3s line regulator (q102) regulator for af amp (ic454) af mute sw (q350) eeprom (ic2) af filter ctrl (q508) wide/narrow mode...

  • Page 7

    2 - 3 2nd vco 1st vco doubler circuits pll circuit • rf unit (top view) • rf unit (bottom view) reference frequency oscilator (x1) wfm/fm mode sw (d55) if demodulator ic (ic12) 1st if mixer (ic1) 2nd if mixer (q523) noise amp (ic13) bar/externa antenna sw (q510) rf amp (q505) bar antenna tuning diod...

  • Page 8: Section 3. Disassembly

    3 - 1 section 3. Disassembly instruction 1. Removing the rear panel 1) remove the battery cover. 2) remove 2 screws and jack cap. 3. Removing the logic unit 1) remove the dial knob, 2 nuts and 2 screws from the front panel. 2) unsolder the 2 points from the speaker. 3) remove the rear panel in the d...

  • Page 9: Section 4. Circuit

    4 - 1 • 15–29.995 mhz the rx signal from the antenna connector (chassis; j1) is applied to the rf amp (q505) through the band sws (d63, d64 and d73), lpf and the hpf. The amplified signal is passed through the band sws (d71 and d72), and then applied to another rf amp (ic18). • 30–117.995 mhz and 17...

  • Page 10

    4 - 2 • 1st if and 2nd if circuits • 3rd if and demodulator circuits 1st if circuit (rf unit) the rx signal from the rf circuit is applied to the 1st if mixer (ic1) to be mixed with the 1st lo signal from the 1st lo vco (q528, q529, d105 and d106), resulting in the 266.7 mhz 1st if signal. The 1st i...

  • Page 11

    4-2 af circuits (logic unit) fm mode the demodulated af signal is passed through the de-emphasis circuit (r323 and c316) and af filter (q301), and then applied to the af amp (q300) through the af line sw (d300). Wide fm/am mode the demodulated af signal is passed through the af filter (r316, r320 an...

  • Page 12

    4 - 4 4-4 voltage block diagram voltage from the power supply is routed to throughout the transceiver via regulators and switches. 4-5 cpu port allocation battery pack j500 d508 cp3 d509 cp4 dc sw chrg chrg c trl dc-dc conv r ese t logi c c trl +3s c trl ifv c trl chgc hv reset logic 3.3v +3s ifv pc...

  • Page 13

    4 - 5 4-5 cpu port allocation (continued) pin no. Line name description i/o 114 func [func] input. L= pushed. I 115 vr_stb electric volume ic strobe. O 116 ifcon if demodulator ic chip enable. L=activated. O 117 ckout cpu clock output. (for tuning voltage generation) o 118 beep beep sounds. (square ...

  • Page 14: Section 5. Adjustment

    5 - 1 ¤ quitting adjustment mode turn the receiver’s power off. ¤ entering adjustment mode 1) connect the jig cable (see the illust below) to the [sp] jack. 2) push and hold [func], [band],and [y], turn the receiver’s power on. ¤ key assignments for the adjustment mode equipment grade and range equi...

  • Page 15: Rf Unit

    5 - 2 adjustment receiver’s condition operation adjustment item value reference frequency 1 • frequency: 439.800 mhz • connect a frequency counter to "2nd lo" line on the rf unit as illustrated below. 247.050 mhz (±120 hz) 5-2 frequency adjustment 1) select an adjustment item using [band]/[ts]. 2) s...

  • Page 16

    5 - 3 adjustment receiver’s condition operation adjustment item value bar antenna (0.495 mhz) 1 note: this procedure (the step "1" and "2") must be done twice. • frequency: 0.495 mhz • receiving 1) c o n n e c t t h e s u p p l i e d a n t e n n a to a signal generator through an appropriate conecto...

  • Page 17

    5 - 4 5-3 receive adjustments (continued) 1) select an adjustment item using [band]/[ts]. 2) set the ssg as specifi ed, then push [v/m] to store the adjustment value. Adjustment receiver’s condition operation adjustment item value vhf sensitivity 1 • frequency: 118.100 mhz • receiving • connect an s...

  • Page 18

    5 - 5 5-3 receive adjustments (continued) 1) select an adjustment item using [band]/[ts]. 2) set the ssg as specifi ed, then push [v/m] to store the adjustment value. Adjustment receiver’s condition operation adjustment item value s-meter 1 note: "sensitivity" must be adjusted before "s-meter." and ...

  • Page 19: Section 6. Parts

    6 - 1 section 6. Parts list ic1 1110005230 s.Ic upc2757tb-e3 t 29.3/24.8 ic3 1130012930 s.Ic mb15f63ulpva1-g t 25.6/6 ic12 1110007300 s.Ic njm2552v-te1-#zzzb t 44.8/20.2 ic13 1110006490 s.Ic lmv321idckr t 39.4/16.4 ic14 1130008511 s.Ic tc7w53fu(te12l,f) b 44.9/30.2 ic17 1130009670 s.Ic bu2092fv-e2 b...

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    6 - 2 ref parts description m. H/v no. No. Location [rf unit] l110 6200011031 s.Coi eljrf r10jfb b 8.5/8.9 l111 6200007881 s.Coi eljrf 33njfb t 3.4/4.3 r1 7030007280 s.Res erj2gej 331 x (330) b 31.8/9.4 r4 7030007280 s.Res erj2gej 331 x (330) t 26/22 r5 7030009270 s.Res erj2gej 821 x (820) t 20.9/7....

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    6 - 3 ref parts description m. H/v no. No. Location [rf unit] c52 4030017730 s.Cer c1005 jb 1h 471k-t t 27.3/38.3 c54 4030017460 s.Cer c1005 jb 1h 102k-t b 22.5/36.9 c55 4030017460 s.Cer c1005 jb 1h 102k-t t 14.2/31.5 c58 4030017460 s.Cer c1005 jb 1h 102k-t t 23.4/26.9 c59 4030017350 s.Cer c1005 ch ...

  • Page 22

    6 - 4 ref parts description m. H/v no. No. Location [rf unit] c716 4030017550 s.Cer c1005 ch 1h 1r5b-t b 12.5/21.7 c719 4030016790 s.Cer c1005 jb 1e 103k-t t 40.1/8.4 c720 4030017350 s.Cer c1005 ch 1h 020b-t t 4.7/4.2 c721 4030017350 s.Cer c1005 ch 1h 020b-t t 3.4/2 c722 4030017460 s.Cer c1005 jb 1h...

  • Page 23

    6 - 5 ref parts description m. H/v no. No. Location [logic unit] r14 7030005120 s.Res erj2gej 102 x (1k) t 15.5/10.6 r15 7030005240 s.Res erj2gej 473 x (47k) t 16.5/11.3 r16 7030005170 s.Res erj2gej 474 x (470k) t 17.6/10.8 r17 7030010040 s.Res erj2gej-jpw b 22.1/26.4 r19 7030005240 s.Res erj2gej 47...

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    6 - 6 ref parts description m. H/v no. No. Location [logic unit] c351 4030016930 s.Cer c1005 jb 1a 104k-t b 19.5/22.1 c352 4030016930 s.Cer c1005 jb 1a 104k-t b 18.6/18.9 c400 4030016930 s.Cer c1005 jb 1a 104k-t b 19.7/25.6 c402 4030016930 s.Cer c1005 jb 1a 104k-t b 26.1/20.1 c403 4030017490 s.Cer c...

  • Page 25: Section 7. Mechanical

    7 - 1 [chassis parts] ref order description qty. No. No. J1 6510027770 3250 ant connector 1 sp1 2510001550 k036na511-10 1 mp1 8210026020 3250 front panel (incl. Mp9) 1 mp2 8210026030 3250 rear panel 1 mp3 8110009931 1995 batt cover (b)-1 1 mp4 8930080510 3250 7-key 1 mp5 8930080520 3250 func rubber ...

  • Page 26

    7 - 2 mp1(c) mp5(c) mp11(c) mp6(c) mp14(c) mp10(c) mp28(c) mp16(c) mp7(c) mp9(c) mp4(c) sp1(c) mp32(c) ep4(l) w600(l) mp29(c) ds1(l) mp3(l) mp6(l) mp8(l) s9(l) j1(c) s6(l) mp20(c) mp8(c) mp2(l) mp9(l) mp10(l) mp7(l) j500(l) mp5(l) w1(l) mp19(c) mp22(c) mp24(c)×2 mp23(c)×2 mp22(c)×2 mp4(l)×2 mp2(r)×3...

  • Page 27: Section 8. Board

    8 - 1 section 8. Board layouts the combination of top side and bottom side of this • rf unit (top view) • logic unit (top view) dbl2 dbl1 shift +3s vp trac fset +3v gnd gnd gnd gnd gnd gnd nc nc nc nc nc nc nc nc nc nc gnd pstb pck pdaul pps +2s logic3.3v iock iostb ioen iodata att noise rssi ifv de...

  • Page 28: • Rf Unit

    8 - 2 the combination of top side and bottom side of this • rf unit (bottom view) • logic unit (bottom view) [dial] [sp] [func] [sql] • [att] sp1 (chassis) int. Speaker ant connector j1 (chassis) trac gnd gnd gnd gnd nc nc nc nc nc nc rssi +2s iock iostb ioen iodata logic3.3v noise det gnd gnd nc nc...

  • Page 29: Section 9. Block

    9 - 1 section 9. Block diagram rf am p level conv bpf bpf bpf x2 rx sw x2 rx sw rx sw rx sw rx sw bpf bpf buff j1(chassis) buff pll ic lpf bpf bpf att ant sw fil ripple fil loop fil loop bpf x1 cr-900 x1:cr-900 lpf if am p lpf bpf bpf xtal hpf bpf ceramic rf am p rf am p rf am p rf am p rf am p rf a...

  • Page 30: Logic Unit

    9 - 2 battery j500 lcd d508 rb551v x1 cstcr_g x1:cstce12m2g52 pre am p af mute af am p sp1 fil ripple j2 lpf cp10s cp3 d509 rb551v cp10s cp4 tp90n00e20 s6 1 com 2 a 3 b af fil wfm/am tone fil fm af fil sw m ode sw m ode vol af reg logic3.3 vcc cpu eeprom 7key c i-v clock shift light sw light lcd lig...

  • Page 31: Section 10. Voltage

    10 - 1 section 10. Voltage diagram *: refer to the parts list for the value and name of component. Logic unit (1/2) 120k r52 2.2 msva c114 0.001 c34 0.1 c2 150k r50 0.001 c35 120k r53 0.001 c46 0.1 c116 390k r49 0.001 c120 0.01 c43 0.22 c115 68p c100 0.001 c47 0.001 c48 10k r55 0.001 c49 0.001 c30 m...

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    10 - 2 *: refer to the parts list for the value and name of component. 0.001 c501 0.001 c200 0.001 c123 1m r351 hat1023r q500 5 d 6 d 7 d 8 d 1 s 2 s 3 s 4 g xp6501 q301 1 2 3 4 5 6 0.001 c132 0.001 c503 2sb1132 q501 0.001 c17 0.001 c18 0. 1 c455 0.001 c121 0.1 c322 0.001 c126 0.001 c500 47 msva c12...

  • Page 33

    10 - 3 *: refer to the parts list for the value and name of component. Rf unit (1/2) 47k r16 0.001 c548 47k r229 2.5p c9 10p c139 470p c5 10p c35 4p c39 47p c175 470p c52 180p c517 0.001 c188 3.5p c206 33p c511 3.9u l91 0.001 c70 470p c138 0.01 c141 27p c13 0.039 c526 330 r221 10k r128 0.1 c521 0.1 ...

  • Page 34

    10 - 4 *: refer to the parts list for the value and name of component. Rf unit (2/2) 0.001 c237 470 r56 100k r40 0.001 c74 0.001 c95 100 r4 2 0 .01 c431 2.7u l73 15 r320 47p c89 5p c155 2.7k r156 0.22 c242 0.001 c102 15k r172 22k r66 330 r1 15k r46 47p c87 47p c554 10k r204 2p c510 10n l45 1k r154 0...

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    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 ...

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    1-1-32, kamiminami, hirano-ku, osaka 547-0003, japan s-14622xz-c1 © 2010 icom inc..