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Icom COMMUNICATIONS RECEIVER IC-R3 Service Manual

Other manuals for COMMUNICATIONS RECEIVER IC-R3: Instruction Manual, Brochure & Specs, Service Manual
Manual is about: COMMUNICATIONS Receiver

Summary of COMMUNICATIONS RECEIVER IC-R3

  • Page 1

    Service manual 6-9-16, kamihigashi, hirano-ku, osaka, 547-0002, japan s-13703iz-cd © 2000 icom inc. Communications receiver.

  • Page 2

    6-9-16, kamihigashi, hirano-ku, osaka 547-0002, japan phone : 06 6793 5302 fax : 06 6793 0013 url : http://www.Icom.Co.Jp/world/index.Html communication equipment himmelgeister str. 100, d-40225 düsseldorf, germany phone : 0211 346047 fax : 0211 333639 url : http://www.Icomeurope.Com unit 9, sea st....

  • Page 3

    Table of contents section 1 specifications section 2 inside views section 3 disassembly instructions section 4 circuit description 4 - 1 receiver circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1 4 - 2 pll cricuits . . . . . . . ....

  • Page 4: Section 1

    M general • frequency range : 0.495–2450.095 mhz • mode : f3, a3, c3f (tv) • no. Of memory channel : 450 channels • frequency stability : ±6 ppm max. (–10˚c to +50˚) • tuning steps : 5, 6.25, 10, 12.5, 15, 20, 25, 30, 50, and 100 khz • anntena connector : bnc (50 Ω ) • power supply requirement : • p...

  • Page 5: Section 2

    Section 2 inside views 2 - 1 • rf, rf-b, vco and fm-tv units • logic unit 2nd if circuit (fi3: fl-319) fm-tv unit ([oth-2] only]) rf-b unit vco unit rf unit cpu system clock (x1: cr-613) power amplifier (ic3: xc62fp3002mr) dc-dc converter cpu (ic1: m38267m8l-256gp) pll converter circuit (ic15: ta310...

  • Page 6: Section 3

    Section 3 disassembly instructions 3 - 1 • removing the rear panel 1 unscrew 3 screws, a . 2 unscrew 1 screw, b . 3 remove the rear panel in the direction of the arrow. 4 unplug speaker connector to separate front panel and rear panel. • removing the logic unit 1 unscrew 1 screw, d . 2 remove the lo...

  • Page 7: Section 4

    Section 4 circuit description 4 - 1 4-1 receiver circuits 4-1-1 rf switching circuit (rf unit) (1) below 1150 mhz the rf signals from the antenna connector pass through the band switching diode (d2) and an attenuator (d12, d13). The signals are then applied to the rf circuit which sup- press out-of-...

  • Page 8

    4 - 2 the 65 mhz–107.995 mhz signals pass through the band switching diode (d503) and bandpass filter (d501), and are then amplified at the rf amplifier (q501). The amplified sig- nals pass through the bandpass filter (d502) and band switching diode (d504). The 108 mhz–173.995 mhz signals pass throu...

  • Page 9

    4 - 3 4-1-4 1st if and 2nd mixer circuits (rf unit) the 2nd mixer circuit converts the 1st if signal to a 2nd if signal. The filtered each 1st if signal from the bandpass filter are mixed with the 2nd lo signal at the 2nd mixer circuit (ic10, pin 1) to produce each 2nd if signal depending on the rec...

  • Page 10

    4 - 4 (2) tv mode the amplifed signals at the 2nd if amplifier (q857) are applied to the bandpass filter (fi901). The filtered signals are applied to the tv if ic (ic901) as audio if signal and the video if signal, separately. Ic901 is the video/audio detector ic of the pll sprit type, which contain...

  • Page 11

    4 - 5 a portion of the af signals from the fm if ic (rf unit; ic2, pin 9) are applied to the active filter section (ic2, pin 8). The active filter section amplifies and filters noise components. The filtered signals are applied to the noise detector section and output from pin 13 as the “sdet” signa...

  • Page 12

    4 - 6 an oscillated signal from the 1st vco passes thorough the buffer amplifiers (ic4, q25), is applied to the pll ic (ic3, pin 19) and is prescaled in the pll ic based on the divided ratio (n-data). The pll ic detects the out-of-step phase using the reference frequency and outputs it from pin 13. ...

  • Page 13

    4 - 7 fm-tv detector circuits (fm-tv unit) agc amp. Vco pd if amp. Dc amp. Video amp. Loop amp. 20 6 d2 d4 8 9 10 11 12 13 14 l1 r14 r15 r16 the detected signal c16 l3 l2 r13 r12 c16 r16 r15 r6 r8 19 21 22 24 25 c18 r78 r77 r3 c4 cp1 fmtv5 bpf if amp. Ic1 fi1 c3 r4 "ifin" signal from the 1st mixer c...

  • Page 14

    4 - 8 pin port description number name 5 6 7 8 9 10 11 12 16 17 b1c b2c b3c 65mc 30mc shift dbl1 dbl2 470mc 600mc outputs low-pass filter select signal. Low : when frequencies 0.5 to 1.9 mhz are displayed. Outputs bandpass filter select signal. Low : when frequencies 1.9 to 15 mhz are displayed. Out...

  • Page 15

    4 - 9 pin port description number name 42 45 51 52 54 56 57 58 59 60 61 62 63 64 ecs pstb osstb tgstb data uhf3vc 174mc 108mc hfc att3 att2 att1 am wfm outputs chip select signal for the eeprom (logic unit; ic2, pin 1). I/o port for strobe signal from/to the pll ic (vco unit; ic3, pin 3). Outputs ch...

  • Page 16: Section 5

    5 - 1 5-1 preparation ‘ ‘ required test equipment ‘ ‘ entering adjustment mode q turn power off. W input the square wave (as illustration at page 5-2) to the [sp] jack (rf unit; j2). E push and hold the [func] key, and then turn power on. Note: when turning power off disconnecting the square wave, c...

  • Page 17

    5 - 2 standard signal generator 1/8" (3.5 mm) 3-conductor plug gnd clone audio generator 1.5 v 3 v 10 hz when entering the adjustment mode, input the square wave as below from the audio generator connection dc power cable connection power supply 4.5 v / 1 a.

  • Page 18

    5 - 3 5-2 pll adjustment “tv receiving system”, “reference frequency” and “detector output voltage” adjustments must be per- formed at “adjustment mode”. 1st vco lock voltage (shift on) (shift off) 2nd vco lock voltage converter vco lock voltage tv mode reference frequency tv receiving system refere...

  • Page 19

    5 - 4 1st vco lock voltage (shift on) adjustment l64 1st vco lock voltage (shift off) adjustment l63 tv mode reference frequency check point cp6 tv mode reference frequency adjustment l902 detector output voltage check point cp1 detector output voltage adjustment l21 1st vco lock voltage check point...

  • Page 20

    5 - 5 5-3 receiver adjustments the following adjustment must be peformed at the “adjustment mode”. The “s-meter” adjustment must be performed after “receiver sensitivity adjustment”. Receiver sensitivity s-meter adjustment adjustment adjustment condition measurement value point unit location unit ad...

  • Page 21

    5 - 6 receiver sensitivity check point sd.

  • Page 22

    5 - 7 5-4 tft lcd and fm-tv unit adjustments lcd light on dc-dc voltage video synchro- nous osd frequency fm-tv frequency ([oth-2] only) adjustment adjustment adjustment condition measurement value point unit location unit adjust 1 1 1 1 1 • displayed frequency : 2 channel • mode : tv mode • push an...

  • Page 23

    5 - 8 dc-dc voltage adjustment r805 dc-dc voltage check point video synchronous adjustment r902 osd frequency adjustment c935 video synchronous check point cp1 5v logic unit r6 r8 r12 r13 r14 fm-tv frequency adjustment j1, pin 2 power supply 5 v/1 a l2 bottom view standard signal generator fm-tv fre...

  • Page 24: Section 6 Parts List

    S.=surface mount ic1 1110004020 s.Ic µpc2757t-e3 ic2 1110003200 s.Ic ta31136fn (el) ic5 1130009670 s.Ic bu2092fv-e2 ic10 1110004020 s.Ic µpc2757t-e3 ic13 1110004480 s.Ic µpc2758t-e3 ic14 1110005120 s.Ic µpc2749tb-e3 ic15 1130009370 s.Ic tb31242fn (el) ic901 1110005040 s.Ic m52342fp 600c q1 153000228...

  • Page 25

    S.=surface mount l55 6200005650 s.Coil eljre 8n2z-f l57 6200005710 s.Coil eljre 27ng-f l58 6200005730 s.Coil eljre 39ng-f l59 6200005720 s.Coil eljre 33ng-f l60 6200007230 s.Coil lqn21a 15nj04 l61 6200007700 s.Coil lqn21a 22nj04 l76 6200004920 s.Coil mlf1608a 2r2k-t l77 6200004730 s.Coil mlf1608a 1r...

  • Page 26

    S.=surface mount r806 7030005000 s.Resistor erj2gej 471 x (470 Ω ) r807 7030007250 s.Resistor erj2gej 220 x (22 Ω ) r808 7030005090 s.Resistor erj2gej 104 x (100 k Ω ) r809 7030007290 s.Resistor erj2gej 222 x (2.2 k Ω ) r810 7030007290 s.Resistor erj2gej 222 x (2.2 k Ω ) r850 7030005600 s.Resistor e...

  • Page 27

    S.=surface mount c105 4030014200 s.Ceramic ecue1h101jcq c106 4030014120 s.Ceramic ecue1h100ccq c107 4030013850 s.Ceramic ecue1e102kbq c108 4030014220 s.Ceramic ecue1e471kbq c109 4030014220 s.Ceramic ecue1e471kbq c110 4030013970 s.Ceramic c1005 jb 0j 104k-t-n c111 4030009820 s.Ceramic c1005 jb 1c 103...

  • Page 28

    S.=surface mount c919 4030017020 s.Ceramic jmk212bj475mg-t c920 4550006200 s.Tantalum ecst0jy106r c921 4030013850 s.Ceramic ecue1e102kbq c922 4550006960 s.Tantalum temsvb2 0g 107m8r c923 4030017020 s.Ceramic jmk212bj475mg-t c924 4550006970 s.Tantalum temsva 0g 476m8r c925 4550006970 s.Tantalum temsv...

  • Page 29

    S.=surface mount r709 7030007290 s.Resistor erj2gej 222 x (2.2 k Ω ) r710 7030007290 s.Resistor erj2gej 222 x (2.2 k Ω ) r711 7030007250 s.Resistor erj2gej 220 x (22 Ω ) c401 4030009820 s.Ceramic c1005 jb 1c 103k-t-a c402 4030009820 s.Ceramic c1005 jb 1c 103k-t-a c403 4030009820 s.Ceramic c1005 jb 1...

  • Page 30

    S.=surface mount l906 6200009210 s.Coil nl 252018t-390j l907 6200005010 s.Coil nl 252018t-100j r3 7030005050 s.Resistor erj2gej 103 x (10 k Ω ) r4 7030005050 s.Resistor erj2gej 103 x (10 k Ω ) r5 7030005590 s.Resistor erj2gej 680 x (68 Ω ) r6 7030005050 s.Resistor erj2gej 103 x (10 k Ω ) r7 70300049...

  • Page 31

    S.=surface mount r966 7030008270 s.Resistor rr0510r-104-d (100 k Ω ) r967 7030005090 s.Resistor erj2gej 104 x (100 k Ω ) r968 7030007340 s.Resistor erj2gej 153 x (15 k Ω ) r969 7510001280 s.Thermistor ntccm20124ag473j-t r970 7030005090 s.Resistor erj2gej 104 x (100 k Ω ) r974 7030005040 s.Resistor e...

  • Page 32

    S.=surface mount j801 6510022180 s.Connector 08-6212-024-340-800 ds1 5030001830 lcd a0080 ds2 5040002230 s.Led cl-200yg-c-ts ds3 5040002230 s.Led cl-200yg-c-ts ds4 5030001780 lcd alp210cxx10 ds5 5080000460 cfl 3ae4t4kl2008y aic s2 2230000900 s.Switch jpm1990-2013r t1 5920000740 transformer to-47 t2 ...

  • Page 33

    S.=surface mount c131 4550003220 s.Tantalum temsva 1e 105m-8l c132 4030011600 s.Ceramic c1608 jb 1c 104kt-n c133 4030011810 s.Ceramic c1608 jb 1a 224k-t-n c134 4030011810 s.Ceramic c1608 jb 1a 224k-t-n c135 4030013850 s.Ceramic ecue1e102kbq c136 4550000530 s.Tantalum tesva 1v 104m1-8l c137 403001385...

  • Page 34

    S.=surface mount c1 4030013850 s.Ceramic ecue1e102kbq c2 4030013850 s.Ceramic ecue1e102kbq c3 4030013850 s.Ceramic ecue1e102kbq c4 4030014200 s.Ceramic ecue1h101jcq c5 4030013850 s.Ceramic ecue1e102kbq c10 4030013970 s.Ceramic c1005 jb 0j 104k-t-n c11 4030013970 s.Ceramic c1005 jb 0j 104k-t-n c12 40...

  • Page 35: Section 7

    Section 7 mechanical parts and disassembly 7 - 1 ref. No. Oder no. Description qty. J1 6510022400 connector bnc-r157 1 sp1 2510000960 speaker k036na500-26a27 1 mp1 8210016440 2304 front panel 1 mp2 8210016450 2304 rear panel 1 mp3 8810007010 2304 batt. Cover 1 mp4 8930050420 2304 lock plate 1 mp5 89...

  • Page 36

    7 - 2 mp4 (c) mp13 (c) mp11 (c) mp4 (rf) mp7 (l) mp1 (l) mp13 (l) mp11 (l) mp12 (l) mp21 (l) mp10 (l) ds5 (l) mp17 (l) mp14 (l) mp4 (l) ds4 (l) mp5 (l) mp6 (l) mp26 (c) mp19 (c) mp19 (c) mp33 (c) mp16 (c) mp14 (c) mp24 (c) mp8 (c) mp15 (c) mp1 (rf) mp3 (rf) mp23 (c) mp21 (c) mp22 (c) mp6 (c) mp18 (c...

  • Page 37

    Section 8 semi-conductor information 8 - 1 2sa1362 gr (symbol: aeg) 2sa1576 s (symbol: fs) 2sa1588 gr (symbol: sg) 2sb1132 r (symbol: barb) 2sb1184 q (symbol: b1184) 2sb1201 s (symbol: b1201) 2sc4081 s (symbol: bs) 2sc4117 gr (symbol: dg) 2sc4215 o (symbol: qo) 2sc4403 3 (symbol: ly3) 2sc4617 q (sym...

  • Page 38: Section 9

    Section 9 board layouts 9 - 1 9-1 vco and rf-b units 9-1-1 top view • vco unit • rf-b unit c971 r949 r943 c959 c968 gnd conlo lv 3 gnd conv r3v 2ndlo pda pck pstb +3v lv 1 1stlo gnd shift vp fset ref r940 c960 c955 r948 c958 l918 q862 l920 q863 c79 c78 l45 r1 19 r120 c182 r123 c163 d61 c161 r126 r50...

  • Page 39

    9 - 2 • rf-b unit 9-1-2 bottom view • vco unit r69 c125 r45 r970 r971 r44 1 2 3 j2 j1 c972 c974 l923 l924 l921 l922 c132 q864 l925 q871 c127 q870 c991 c126 c133 ic3 c134 ep101 ep100 q25 x1 q32 q31 c130 c131 c128 c976 c978 r950 c983 r951 c145 r41 r42 r43 d42 c124 r89 r46 c100 c257 c256 r197 r198 c139...

  • Page 40

    9 - 3 9-2 fm-tv unit • top view r33 video gnd afout sifout gnd ifin ic22 c30 c74 c26 c29 c57 r54 r38 r39 r55 r24 c22 l21 l41 c17 r41 cp1 b5415d c41 c12 r13 r12 r8 r6 r31 c28 c13 c10 r10 c16 r16 r15 r9 r14.

  • Page 41

    9 - 4 • bottom view c72 r40 d3 c27 r35 c71 c77 c54 r45 c42 r44 c53 r47 r42 r43 r1 c20 r4 c5 r77 c61 r78 r3 c55 r52 r51 r28 r81 c76 r21 r53 c51 c43 r46 c44 c45 d41 c1 d1 c19 c2 r2 c3 c18 c4 c52 c50 c11 c32 r30 r23 r75 r73 r37 c75 c73 j1 ic21 l52 c25 d51 d52 q51 ic1 fi1 q41 l51 c24 ic2 q21 c21 d4 l2 l...

  • Page 42

    9 - 5 9-3 logic unit • top view r157 r156 r1 13 r1 12 r164 r947 r943 r938 r939 r159 r955 r823 d810 r956 r944 c821 r920 r801 c802 r825 r923 c923 r922 c924 r921 c925 c917 c911 c916 r927 r803 r932 r926 r929 c931 c910 c907 r806 r81 1 r928 c928 c919 c926 c822 r919 r918 r917 r916 r915 r914 r913 r912 r91 1...

  • Page 43

    9 - 6 • bottom view d13 c9 r78 r77 r76 r75 r73 r963 r962 r961 r964 c263 c106 c114 c261 r32 r33 r970 r34 r4 d14 d2 r3 c7 r8 d11 r103 r807 r808 r809 r172 c41 c251 r102 d6 d10 d7 d9 d8 r51 r48 c51 r49 r50 r21 r20 r52 c39 r255 c42 ic5 q6 q39 c10 c258 c4 q38 q806 q7 c905 q804 q5 c304 q4 r969 r35 r960 r74...

  • Page 44

    9 - 7 9-4 rf unit • top view c104 r925 c906 c114 q42 q45 d77 d51 d52 c2 c10 c81 c82 l6 l1 l914 l912 l91 1 c11 d909 r959 r14 r18 r16 r850 r851 r854 c936 c935 c963 c25 c28 c808 c811 c858 c861 c988 c982 c983 r941 c947 c979 r808 r113 r256 r257 r255 c93 c35 c94 c36 c37 c21 c22 c813 c815 c20 c964 c933 c93...

  • Page 45

    9 - 8 • bottom view r125 r123 r121 r124 c125 c123 r957 r924 c304 r974 r53 r50 r86 c65 c262 c39 c203 c261 r200 r205 r204 c903 c904 r936 r932 r931 c108 r60 r61 r59 r908 r58 r917 r37 r918 c905 r64 r57 c1 13 c99 c381 c109 c110 c111 c112 c106 c105 c107 r36 r35 r56 c101 c97 r85 r81 r83 c118 r84 r82 c64 r9...

  • Page 46

    10 - 1 section 10 bc-135 optional desktop charger information ref. No. Oder no. Description qty. Mp1 8930051000 2308 holder 1 mp2 8110005800 1796 cover 1 mp3 8810009990 screw bt m3 x 8 zk 9 mp4 8930039620 leg cushion(a) 4 mp5 8930051010 2308 terminal holder 1 mp7 8930051030 2308 b-terminal 3 mp8 821...

  • Page 47

    10 - 2 10-3 voltage diagram det1 cp1 cp2 sbatt+ sbatt– tanshi board main board chgout batt– det1 bat+ r1 0.15 1 2 3 4 5 6 7 8 9 j1 det2 5v cont 1 2 3 4 5 6 7 8 9 ws2 thd r2 ert-d2fhl103s rl1 a-5w-k d1 1ss53 c1 0.047 batt+ batt– det2 cp3 cp4 cp5 cp6 q1 2sb1184q d1 sb20-3p l1 hk-08s050-2010 r19 0.15 q...

  • Page 48

    10 - 3 10-4 board layouts 10-4-1 main board c22 c29 c26 c27 c24 c25 c13 c32 c33 c30 c31 c35 c34 c28 d5 d1 c36 q1 d4 q2 q4 q8 q3 ic1 ic2 c21 r19 q7 d2 d6 c16 ds1 j4 l1 c4 c12 c2 c8 f3 fuse 2a f2 j1 cp1 c23 c14 r14 c3 r17 r18 c18 r12 r1 1 r22 c15 r2 r23 c6 c20 r9 q6 r21 r3 r6 r16 r15 c1 c9 c7 c10 c5 d...

  • Page 49

    10 - 4 10-4-2 tanshi board j1 1 r2 c1 d1 rl1 r1 thd cont 5v batt+ det1 batt– det2 nc chgout j1 to main unit j4 1 9.

  • Page 50

    11 - 1 section 11 block diagram shift pdaul, pck_is, pstb shift q31: 2sk880 y q32: 2sc4117 gr q21: dtc144ee d61: ma2s077 1st vco ic4: µ pc2746t d62: 1sv286 q22: 2sc5006 q23: 2sc5006 ic3: µ pd3140gs q25: 2sc5231 c8 d913: 1sv305 q861: 2sc5006 1stlo q863: 2sc5195 ic14: µ pc2749tb ic13: µ pc2758t d911: ...

  • Page 51

    12 - 1 section 12 voltage diagram 12-1 vco unit c158 0.001 r124 120 r3v c156 0.001 c166 0.001 c162 10 r129 47 c180 0.001 c182 0.001 l62 acb1608m-600 d62 1sv286 l63 17 nh c165 1.5 p l64 14 nh lv1 l917 0.1 µ h c955 470 p c957 470 p r941 4.7 k r943 47 c956 47 l918 6.8 nh c971 470 p l920 6.8 nh c972 1 p...

  • Page 52

    12 - 2 12-2 rf-b unit agc agc agc agc rfi rfi rfi rfi rfi rfi rfo rfo rfo rfo c411 0.01 l404 0.56 µ h d404 ma2s077 c408 0.01 r404 220 k 30–65 mhz c401 0.01 r409 2.2 k l401 0.56 µ h l402 0.56 µ h d403 ma2s077 r403 47 k c403 0.01 r401 100 k d401 1sv288 c402 0.01 r402 68 k l403 1 µ h r405 100 c406 0.01...

  • Page 53

    12 - 3 12-3 fm-tv unit c16 2 p c17 27 p r9 390 r10 680 r8 6.8 k r6 10 k 15 16 17 18 19 20 21 22 23 24 25 26 27 28 14 13 12 11 10 9 8 7 6 5 4 3 2 1 ic2 an8945sb c4 100 p c61 0.1 c18 0.1 r78 10 k r77 6.8 k cp1 if moni r3 47 c19 0.001 c20 0.001 r2 10 r1 2.2 k d1 ma2s077 c1 0.001 c21 1 1 3 4 5 6 7 8 fi1...

  • Page 54

    Ic10 xc6371a351pr r256 4.7 k ic3 xc62fp3002mr r974 4.7 k r977 47 k q908 un9214 d903 ma2s111 c41 0.1 r961 8.2 k r962 6.8 k r963 5.6 k lvc r960 10 k r964 10 k c51 0.001 r51 120 k s5 mode 1 ds1 a0080 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 com0 com1 com2 com3 seg0 seg1 ...

  • Page 55

    R256 4.7 k c116 0.1 c17 1 c19 1 c20 1 c23 1 l1 cd54-101kc d20 1ss372 d15 1ss372 d5 1ss372 d19 1ss372 c22 1 w5 0 d301 ma2s111 q304 2sc4617 q q303 2sb1132 r c303 47 c98 22 hv vp +3v vcc dcdc_c q26 2sc4081 s r82 47 k c18 3.3 c33 1 c21 1 j1 to rf unit j1 rssi fmaf convc sdet amaf spg pgstb dbloff 174mc ...

  • Page 56

    Ic10 xc6371a351pr r256 4.7 k ic3 xc62fp3002mr r974 4.7 k r977 47 k q908 un9214 d903 ma2s111 c41 0.1 r961 8.2 k r962 6.8 k r963 5.6 k lvc r960 10 k r964 10 k c51 0.001 r51 120 k s5 mode 1 ds1 a0080 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 com0 com1 com2 com3 seg0 seg1 ...

  • Page 57

    174mc 108mc c982 0.001 c983 0.001 vp lvc r3v r875 15 k q872 2sk880 330mc 3 2 1 5 4 q866 xp1114 q867 dta123je r3v att 108m convc 174m 330m r1 330 c6 0.001 r2 330 q1 2sc4081 r3 680 r5 1 k c9 0.001 c81 0.1 c82 0.1 c8 0.001 c2 0.1 d12 1sv308 c7 0.001 d13 1sv308 c10 0.1 ant c5 0.001 d2 1sv308 r7 1 k l6 5...

  • Page 58

    Dbloff ref fset vp shift gnd 1stlo lv1 +3v pck pda 2ndlo r3v conv gnd lv3 conlo gnd 1 2 3 4 pstv d64 ma2s077 d63 ma2s077 r128 10 k c916 0.001 r134 10 k c186 0.001 d65 ma2s077 r130 4.7 k d66 ma2s077 c188 0.001 c187 2 p l49 47 nh l47 12 nh r135 56 c150 0.001 c168 0.001 c167 0.001 c170 0.001 6 5 4 3 2 ...

  • Page 59

    Dbloff ref fset vp shift gnd 1stlo lv1 +3v pck pda 2ndlo r3v conv gnd lv3 conlo gnd 1 2 3 4 pstv d64 ma2s077 d63 ma2s077 r128 10 k c916 0.001 174mc 108mc c982 0.001 c983 0.001 vp lvc r3v r875 15 k q872 2sk880 330mc 3 2 1 5 4 q866 xp1114 q867 dta123je r3v att 108m convc 174m 330m r1 330 c6 0.001 r2 3...

  • Page 60

    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 61: Service

    Service manual 1-1-32, kamiminami, hirano-ku, osaka, 547-0003, japan s-13703iz-cd- 1 © 2000 icom inc. Communications receiver.