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Icom IC-E7 Service Manual

Other manuals for IC-E7: Instruction Manual, Service Manual
Manual is about: VHF/UHF DUAL BAND FM

Summary of IC-E7

  • Page 1

    Service manual vhf/uhf dualband fm transceiver s-14217hz-c1 nov. 2005.

  • Page 2

    Introduction this service manual describes the latest service information for the ic-e7 vhf/uhf dualband fm transceiverat the time of publication. Ordering parts be sure to include the following four points when ordering replacement parts: 1. 10-digit icom parts number 2. Component name and informat...

  • Page 3

    Table of contents section 1 specifications section 2 inside views section 3 disassembly instructions section 4 circuit descripiton 4 - 1 receiver circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1 4 - 2 transmitt...

  • Page 4: Section 1

    1 - 1 section 1 specifications general • frequency range : version transmit (mhz) receive (mhz) [eur], [uk] 144.000–146.000 430.000–440.000 0.495–999.990 [itr] 144.000–146.000 430.000–434.000 435.000–438.000 144.000–146.000 430.000–434.000 435.000–438.000 [fra] 146.000–146.000 430.000–440.000 0.495–...

  • Page 5: Section 2

    Section 2 inside views 2 - 1 cpu cpu (ic4: m30220fcrp) (ic4: m30220fcrp) ptt detector ptt detector (q14: 2sa1832) (q14: 2sa1832) d/a convertor d/a convertor (ic13: bh2220fvm) (ic13: bh2220fvm) reference reference frequency generator frequency generator (x1: cr-813 7.325mhz) (x1: cr-813 7.325mhz) res...

  • Page 6: Section 3

    Section 3 disassembly instructions 3 - 1 • removing the chassis 1 remove the battery pack. 2 remove the jack cap a and unscrew the antenna nut b. 3 remove the dial knob c. 4 unscrew 2 screws d and lift up the chassis in the direction of the arrow. • removing the main unit and pa board 1 unscrew 2 sc...

  • Page 7: Section 4

    Section 4 circuit description 4-1 receive circuits 4-1-1rf circuits (main unit) this transceiver has 4 rf circuits to provide wide receiving range. The received signals from the antenna connector (chassis; j1) are applied to each rf circuits for the frequency coverage, and amplified within the frequ...

  • Page 8

    4 - 2 16 r3v x1 q51, q52 11 10 fm if ic (ic15) • 2nd if demodulator circuit 9 13 12 “noise” signal to the cpu (ic4, pin 47) 1st if signal from the 1st mixer (ic16, pin 6) “rssi” signal to the cpu (ic4, pin 4) 2 8 7 3 5 lpf bpf (wfm) (fm) rssi noise detector noise amplifier limitter amplifier quodrat...

  • Page 9

    4 - 3 the amplified noise components are converted into the pulse-type signal at the noise detector section, and output from pin 13 as the “noise” signal. The “noise” signal is applied to the cpu (ic4, pin 47). Then the cpu outputs “afon” signal from pin 68 according to the “noise” signal level to t...

  • Page 10

    4 - 4 input register osc counter pre- scaler phase detector charge pump loop filter a b loop filter x2 15.3 mhz 15.3/45.9 mhz 2nd lo signal 8 buffer amp. Buffer amp. Lo amp. Q19 doubler q18 q2 q14 q29 12 13 14 “pck” 15 ×1 ×3 “pul” signal to the cpu (ic4, pin 35) from the cpu (ic4) pll ic control sig...

  • Page 11

    4 - 5 pin no. Port name description 2 k2 input port for [ y], [z]keys. 3 k1 input port for [band], [call] and [v/m] keys. 4 rssi input port for rssi signal for the s-meter indicator from fm if ic (ic15, pin 12). 5 vin input port for volatage detection of attached battery pack. 6 ctone input port for...

  • Page 12

    4 - 6 pin no. Port name description 75 sql input port for [sql] key (s7). "low": while [sql] is pushed. 76 func input port for [func] key (pa board; s1). "low": while [func] is pushed. 77 ptt input port for [ptt] key. (pa board; s2) "low": while [ptt] is pushed. 138 pset outputs transmit power contr...

  • Page 13: Section 5

    &- deviation /sciiloscope !Ttenuator &requency counter to s 3tandard n #!54)/. $/ the the !Udio !# millivoltmeter to 2& 3peaker 3 30 -)# '.$ '.$ #,/.% 044 5 - 1 section 5 adjustment procedures ¤ required test equipments equipment grade and range equipment grade and range rf power meter (terminated t...

  • Page 14

    5 - 2 ¤ entering adjustment mode q turn the power off. W connect the jig cable (see page 5-1) to the [mic/sp] jack. E turn the "s1" of the jig cable on. R while pushing [func], [band] and [y] key, turn the power on. T turn the "s1" of the jig cable off, then start the adjust ment. During adjustment ...

  • Page 15

    5 - 3 adjustment item adjustment condition value reference frequency [fr] 1 • • • connect an rf power meter to the antenna connector. Loosely couple a frequency counter to the antenna connector. Transmitting 440.00000 mhz tx high power (vhf/low band) [ph1] 1 • • connect an rf power meter to the ante...

  • Page 16

    5 - 4 adjustment item adjustment condition value dtcs level (vhf) [dt1] 1 • push [call] (no adjustment) − (uhf) [dt2] 2 • push [call] (no adjustment) dtcs balance (vhf) [db1] 1 • • • no audio signal is applied to the [mic/sp] jack. Connect a modulation analyzer with an osciloscope to the antenna con...

  • Page 17

    5 - 5 adjustment item adjustment condition value [t44] 13 • • set the ssg as; frequency : specifi ed frequency* receiving push [func]+[band] (automatic adjustment) [t54] 14 • • set the ssg as; frequency : specifi ed frequency* receiving [t64] 15 • • set the ssg as; frequency : specifi ed frequency* ...

  • Page 18: Section 6

    6 - 1 section 6 parts list m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) s.=surface mount [main unit] ref order description m. H/v no. No. Location ic1 1130012690 s.Ic hn58x24256fpie (sop8) t 11.5/61.9 ic2 1110006720 s.Ic r3112n291a-tr-f t 9.3/46.2 1140013010 s.Ic m3022...

  • Page 19

    6 - 2 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) s.=surface mount [main unit] ref order description m. H/v no. No. Location l44 6200006981 s.Col eljre r10gfa b 10.8/43.9 l101 6200003640 s.Col mlf1608e 100k-t t 9.3/53.1 l102 6200004480 s.Col mlf1608d r82k-t t 8.6/58.5...

  • Page 20

    6 - 3 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) s.=surface mount [main unit] ref order description m. H/v no. No. Location r236 7030007290 s.Res erj2gej 222 x (2.2 k Ω) b 28.7/43.5 r237 7030005240 s.Res erj2gej 473 x (47 k Ω) t 12.8/25.1 r238 7030005240 s.Res erj2ge...

  • Page 21

    6 - 4 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) s.=surface mount [main unit] ref order description m. H/v no. No. Location c82 4030016930 s.Cer ecj0eb1a104k b 22.4/16.8 c83 4030017040 s.Cer ecj0eb1a333k t 8/64.7 c84 4030016930 s.Cer ecj0eb1a104k b 20.7/5.4 c85 40300...

  • Page 22

    6 - 5 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) s.=surface mount [main unit] ref order description m. H/v no. No. Location c288 4030017460 s.Cer ecj0eb1e102k b 15.5/46.7 c289 4030017420 s.Cer ecj0ec1h470j b 2.9/62.9 c290 4030017510 s.Cer ecj0ec1h680j b 20/59.2 c291 ...

  • Page 23

    6 - 6 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) s.=surface mount [vco board] ref order description m. H/v no. No. Location r18 7030007300 s.Res erj2gej 332 x (3.3 k Ω) t 13.7/17.3 r19 7030009290 s.Res erj2gej 562 x (5.6 k Ω) t 10/11.3 r20 7030009290 s.Res erj2gej 56...

  • Page 24

    6 - 7 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) s.=surface mount s1 2260002060 s.Sw skqgad t 6/11.9 s2 2260002060 s.Sw skqgad t 6/27.5 ep1 6910012350 s.Bea mmz1608y 102bt t 4.7/15.7 ep2 6910015370 s.Bea acz1005y-102-t b 3.9/7.6 ep3 6910015370 s.Bea acz1005y-102-t t ...

  • Page 25: Section 7

    Section 7 mechanical parts and disassembly 7 - 1 screw abbreviations b0: self-tapping ph: pan head zk: black ni-zu: nickel-zinc ep3 mp1 ep1 *ep2 * the ac adapter shape may differ depend ing on version. No ac adapter is supplied with some versions. [chasiss parts] j1 6510025010 antenna connector sma-...

  • Page 26

    Mp5 (c) + mp35 (c) mp4 (c) + mp7 (c) mp11 (c) mp34 (c) mp18 (c) mp2 (c) mp37 (c) mp13 (c) mp14 (c) mp33 (c) mp24 (c) mp27 (c) mp15 (c) mp12 (c) mp22 (c) ep2 (m) mp29 (c) pa board mp29 (c) j1 (c) mp29 (c) mp28 (c) j4 (m) mp20 (c) s8 (m) mp1 (v) mc1 (m) main unit vco board mp3 (c) mp25 (c) mp8 (c) mp1...

  • Page 27: Section 8

    Section 8 semiconductor information • transistors and fet's b e c b e c 2sa1576 s 2sa1588 gr 2sa1832 gr 2sc4213 b 2sc4617 s 2sc5006 2sc5108 y 2sc5277 d2 2sc5508 2sc5998 2sj144 gr 2sk880 y fh102 rqa0003 unr9113j unr9114j unr9115j unr9210j unr9211j unr9213j unr9215j xp1110 xp1113 xp1114 xp1115 xp1501 ...

  • Page 28: Section 9

    H5 h10 h15 h20 h25 h30 h35 h40 h0 v0 v5 v10 v15 v25 v30 v35 v20 v45 v50 v55 v40 v65 v70 v60 sp 1 2 to chassis sp1 j5 gnd utx3 gnd rfi tx3 vcc rfo gnd pset led func ptt to pa board mp2 mp1 to chassis j1 sql v/m call band pwr section 9 board layouts 9 - 1 9-1 main unit • top view h5 h10 h15 h20 h25 h3...

  • Page 29

    H5 h10 h15 h20 h25 h30 h35 h40 h45 h0 v5 v10 v15 v0 v25 v30 v35 v20 v45 v50 v55 v40 v65 v70 v75 v60 h5 h10 h15 h20 h25 h30 h35 h40 h0 v5 v10 v15 v0 v25 v30 v35 v20 v45 v50 v55 v40 v65 v70 v75 v60 to vco board j1 j6 lo 16 2 gnd dbl1 dbl2 +3s vshift gnd fin 15 1 v3c v2c v1c vcc mod lv2 lv2 lv1 sp/mic ...

  • Page 30: Section 10

    Section 10 block diagram 10 - 1 voltage line explanatory notes tx line rx line common line data bus line ant hpf hpf bpf apc ctrl heat sens x1 cr-813 lpf x3 cdbc450cx24 rf amp drive pre tx/rx sw amp bpf sw sw ceramic lo amp mc1 lpf lpf fil loop pll ic ant sw fil loop ant sw lpf lpf i f amp bpf xtal ...

  • Page 31: Section 11

    Voltage line explanatory notes tx line rx line 220p c554 47p c556 220p c555 1 c557 r35 0 rb876w d3 56p c512 aa ab ac ad 10 c510 100k r365 180k r364 r366 4.7k mod r363 4.7k 2.7k r374 g vcc c184 0.001 c178 82p l103 100 µ c482 0.001 c481 470p r324 220 x3 cdbc450cx24 r214 680 4 5 xp1114 q16 3 2 1 z unr9...

  • Page 32

    11 - 2 voltage line explanatory notes tx line rx line common line 1sv308 d56 j1 chassis sp1 to chassis tc7w66fu ic22 c546 0.001 c545 0.001 c548 0.001 c547 100p 0.1 µ l44 1sv308 d53 56 r362 r361 10k 22p c523 39n l106 r376 47k hvc350b d55 33n l36 1k r371 1sv308 d54 d46 1sv308 0 r375 0 r360 r379 0 22p ...

  • Page 33: Section 12

    Section 12 bc-164 [main unit] j1 6510024940 connector hec2305-016250 1 ds1 5040003140 led frdg1211c 1 order no. Ref. No. Description qty. Mp4 (c) mp9 (c) mp3 (c) mp1 (c) main unit mp8 (c) mp7 (c) mp2 (c) mp8 (c) mp6 (c) mp5 (c) ep1* * the ac adapter shape may differ depend ing on version. No ac adap...

  • Page 34

    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) ...

  • Page 35

    1-1-32, kamiminami, hirano-ku, osaka 547-0003, japan s-14217hz-c1 © 2005 icom inc..