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Icom IC-A22 Service Manual

Manual is about: VHF air band transceiver

Summary of IC-A22

  • Page 1

    Service manual vhf air band transceivers s-14201hz-c1 may. 2005.

  • Page 2

    Introduction this ser vice manual describes the latest ser vice information for the ic-a22/e and ic-a3/e vhf air band transceiversat the time of publication. 6 versions of the ic-a22/e and 5 versions of the ic-a3/e have been designed. This service manual covers each version. Ordering parts be sure t...

  • Page 3

    Table of contents section 1 specifications section 2 inside views section 3 circuit description 3 - 1 receiver circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 1 3 - 2 transmitter circuits . . . . . . . . . . . ...

  • Page 4: Section 1

    1 - 1 section 1 specifications m general • frequency coverage (unit; mhz) : ic-a22 ic-a22e ic-a3 ic-a3e tx communications 118.000–136.975 118.000–136.975 118.000–136.975 118.000–136.975 rx communications 118.000–136.975 118.000–136.975 118.000–136.975 118.000–136.975 navigation 108.000–117.975 108.0...

  • Page 5: Section 2

    Section 2 inside views rx amplifier (q4001: 3sk230) located under this side rx bpf's vco board rf power amplifier (ic4002: sc-1303) reference regulator (ic5006: s-81250sg) af power regulator (q5006: 2sb1201) fm if ic (ic5001: ta31136f) af selector (ic5002: tc4w53f) buffer amplifier/lpf (ic5005: tc75...

  • Page 6: Section 3

    Section 3 circuit description 3-1 receiver circuits 3-1-1 antenna switching circuit (rf unit) the antenna switching circuit functions as a low-pass fi lter while receiving and a resonator circuit while transmitting. The circuit does not allow transmit signals to enter receiver circuits. Received sig...

  • Page 7

    3-1-8 af circuit (main unit) the af circuit drives the speaker. Af signals from the detector circuit are selected at the af selector (ic5002), and are passed through the af filter (q5026, q5005) and volume control (r5082). The signals are amplifi ed at the af power amplifi er (ic5003) to a level nee...

  • Page 8

    3-2 transmitter circuits 3-2-1 microphone amplifier circuit (main unit) af signals from the microphone or from the [mic] jack are applied to the alc amplifi er (ic5004, pin 9) through r5047. R5047 adjusts the microphone input level. The output signal from ic5004 (pin 7) are amplified at the buffer a...

  • Page 9

    3-4 power supply circuits 3 - 4 pin no. Port name description 2 lbatt input port for detecting the connected battery (or external dc input) voltage for "low batt" or "over v" indication. 3 sql input port for the squelch condition. When squelch open: low 4 lok input port for the pll condition. When p...

  • Page 10: Section 4

    4 - 1 section 4 adjustment procedures adjustment adjustment conditions measurement value adjustment point unit location unit adjust tune voltage 1 • • displayed frequency : 118.025 mhz receiving rf connect the digital multimeter or oscillo- scope to cp2 (tune). 1.4–1.6 v rf r4068 reference frequency...

  • Page 11

    4 - 2 attenuator 40 or 50 db modulation analyzer dummy load 8 Ω ac millivoltmeter audio generator 300–3000 hz dc power supply 12 v/2 a or more reference frequency adjustment modulation adjustment to [dc 12v] to [sp] to [ant] to [mic] c4101 r5087 r5047 r5098 r4057 rf power meter 50 Ω/1–10 w frequency...

  • Page 12

    Adjustment adjustment conditions measurement value adjustment point unit location unit adjust sensitivity 1 • • • displayed frequency : 118.025 mhz connect the ssg to the antenna con- nector and set as; frequency : 118.025 mhz level : 0 dbµ* (–107 dbm) modulation : am, 1 khz, 30% receiving top panne...

  • Page 13

    4 - 4 3quelch adjustment 3ensitivity adjustment 2 2 2 ,/')# , , , , , 2 2 2 $)34/24)/. !# -),,)6/,4-%4%2 $# to to to 34!.$!2$ '%.%2!4/2 n $/ an the #!54)/. 6/2 adjustment )# !% 7eather 3ensitivity 2& -!)..

  • Page 14: Section 5

    Ic4001 1130007610 s.Ic µpd3140gs-e1 (ds8) ic4002 1110003680 ic m68721/sc1303 q4001 1580000650 s.Fet 3sk230-t2 u1b q4002 1580000400 s.Fet 3sk151-y (te85l) q4003 1530002600 s.Tr 2sc4215-o (te85r) q4004 1530002560 s.Tr 2sc4403-3-tl q4005 1530002560 s.Tr 2sc4403-3-tl q4006 1530002560 s.Tr 2sc4403-3-tl q...

  • Page 15

    Ref order description no. No. Ref order description no. No. C4007 4030007050 s.Cer c1608 ch 1h 220j-t c4008 4030007080 s.Cer c1608 ch 1h 390j-t c4009 4030007030 s.Cer c1608 ch 1h 150j-t c4010 4030006860 s.Cer c1608 jb 1h 102k-t c4011 4030006860 s.Cer c1608 jb 1h 102k-t c4012 4030007030 s.Cer c1608 c...

  • Page 16

    D5006 1790001280 s.Dio ma111 (tx) d5007 1790001280 s.Dio ma111 (tx) d5008 1790001280 s.Dio ma111 (tx) d5009 1790000860 s.Dio ma133 (tx) d5010 1790001280 s.Dio ma111 (tx) d5011 1790001330 s.Zen ma8036-l (tx) d5013 1790001280 s.Dio ma111 (tx) d5014 1790001280 s.Dio ma111 (tx) d5015 1790000860 s.Dio ma...

  • Page 17

    C5089 4030006860 s.Cer c1608 jb 1h 102k-t c5090 4510004650 s.Ele ecev1ea4r7sr j5001 6510017700 s.Cnr il-wx-18pb-vf84-b-e900 j5002 6510017700 s.Cnr il-wx-18pb-vf84-b-e900 j5003 6510017730 s.Cnr il-fpr-30s-hf-e3000 j5005 6510007080 cnr pi28a-02m s5001 2250000240 sw sw-157 (rh09710hh) w5002 7030003860 ...

  • Page 18

    5 - 5 q7001 1530002920 s.Tr 2sc4226-t1 r25 q7002 1530002920 s.Tr 2sc4226-t1 r25 q7003 1530002560 s.Tr 2sc4403-3-tl d7001 1790001290 s.Vcp ma304 (tx) d7002 1790000620 s.Dio ma77 (tx) l7001 6200001520 s.Col mlf2012d r82k-t l7002 6110002990 col la-487 l7003 6200001630 s.Col eljnc r10k-f r7001 703000355...

  • Page 19

    R4012 7030003280 s.Res erj3geyj 470 v (47 Ω) r4013 7030003280 s.Res erj3geyj 470 v (47 Ω) r4014 7030003720 s.Res erj3geyj 224 v (220 k Ω) r4015 7030003720 s.Res erj3geyj 224 v (220 k Ω) r4016 7030003760 s.Res erj3geyj 474 v (470 k Ω) [aus], [uk] 7030003780 s.Res erj3geyj 684 v (680 k Ω) [eur], [eur-...

  • Page 20

    C4129 4030006860 s.Cer c1608 jb 1h 102k-t c4130 4030006860 s.Cer c1608 jb 1h 102k-t c4134 4510004440 s.Ele ecev1ha010sr c4135 4030006860 s.Cer c1608 jb 1h 102k-t c4136 4030006860 s.Cer c1608 jb 1h 102k-t c4137 4030006860 s.Cer c1608 jb 1h 102k-t c4138 4030006860 s.Cer c1608 jb 1h 102k-t c4139 451000...

  • Page 21

    R5049 7030003270 s.Res erj3geyj 390 v (39 Ω) r5050 7030003580 s.Res erj3geyj 153 v (15 k Ω) r5051 7030003800 s.Res erj3geyj 105 v (1 m Ω) r5052 7030003680 s.Res erj3geyj 104 v (100 k Ω) [aus], [uk] 7030003690 s.Res erj3geyj 124 v (120 k Ω) [ic-a3], [eur], [eur-1] r5053 7030003680 s.Res erj3geyj 104 ...

  • Page 22

    Ic6001 1140004860 s.Ic hd4074829tf (z-tat) [ic-a3e] 1140004880 s.Ic hd404829b96tf [others] ic6002 1190000260 s.Ic 24lc08bti/sn ic6003 1110005930 s.Ic s-80845clmc-b66-t2 [eur-1], [aus] 1130007340 s.Ic s-80745sl-a9-t1 [ic-a3], [eur], [uk] ic6004 1130003920 s.Ic tc4s69f (te85r) q6001 1590001840 s.Tr xn...

  • Page 23

    5 - 10 ep6002 8930034040 lct srcn-1541 sg except [aus] ep6002 8930040950 lct srcn-1541-ss [aus] ep6002 8930045060 lct srcn-1541-sp-n-w q7001 1530002920 s.Tr 2sc4226-t1 r25 q7002 1530002920 s.Tr 2sc4226-t1 r25 q7003 1530002560 s.Tr 2sc4403-3-tl d7001 1790001290 s.Vcp ma304 (tx) d7002 1790000620 s.Dio...

  • Page 24: Section 6

    Section 6 mechanical parts and disassembly screw abbreviations bt: self-tapping ph: pan head buh: button head ni: nickel zk: black bs: brass 6 - 1 j3001 6510015550 antenna connector bnc-r117 (incl. Nut) 1 p3001 6510007720 pi28a-02f 1 mp3001 8210011440 1541 rear panel 1 mp3002 8210013230 1541 front p...

  • Page 25

    Logic unit mp3006 (c) mp5007 (m) mp5006 (m) + mp5003 (m) mp5002 (m) + mp5005 (m) mp5001 (m) mp5008 (m) mp3016 (c) mp3023 (c) sp3001 (c) mp3013 (c) ep6002 (l) mp6003 (l) ds6001 (l) mp6002 (l) mp3004 (c) mp3002 (c) ep6002 (l) [ic-a22/e] only mp5009 (m) mp3030 (c) mp3020 (c) mp3029 (c) mp3003 (c) mp303...

  • Page 26: Section 7

    Section 7 block diagram 7 - 1 118.00-136.975 mhz tx frequency 108.00-136.975 mhz 161.65-163.275 mhz rx frequency others #01, #07 version r5098 r5087 r5082 int mic low batt xp4315 q6108 njm2904v ic6107 d6116: ma111 q6109: 2sc4211 un9213(a3/e) unr9213j(a22/e) q6110 njm2903v ic6108 2sc4403 q4015 cr-456...

  • Page 27: Section 8

    Section 8 semiconductor information b e c b c e b c e b e c b e c b e c d s g2 g1 d s g2 g1 b e c b e c b e c b e c b e c b e c b e c e1 b1 c2 c1 b2 e2 e1 c2 b1 c1 e2 b2 e1 c2 b1 c1 e2 b2 b1 e b2 c1 c2 2sa1162 6 2sb1132 r 2sc3357 rf 2sc4116 bl 2sc4215 o 2sc4226 r25 2sc4403 3 2sd1819a r 3sk151 y 3sk2...

  • Page 28: Section 9

    Section 9 board layouts 9 - 1 anl ptt light r30 j9001 r10k t o logic unit j6003 add "9000" to each indicated part number on the unit for the actual part number. Note: pttsw gnd r12k gnd lv 5v out shift add "7000" to each indicated part number on the board for the actual part number. Note: to main un...

  • Page 29

    9 - 2 9-4 rf unit • top view ic4002 p5001 x4001 mp7001 5v shift lv extptt mp4002 mp4001 extmic t o main unit j5003 dc 12v clone intsp spe r5 if low tmut vcc wx lok enb shift gnd 5v rf-agc sidet extsp agc if gnd mod vcc gnd +5 data clk gnd gnd vco board out vcc vcc hv hv to prt unit main from unit j5...

  • Page 30

    Mp4003 10 1 11 20 add "4000" to each indicated part number on the unit for the actual part number. Note: mp4005 mp4006 mp4004 9 - 3 • bottom view (rf unit).

  • Page 31

    De up down lok trc shift ptt low tmut gnd spe 9 1 1 7 14 8 dial intsp hv hv vcc vcc gnd nav sql beep deto afon wx anl gnd gnd gnd gnd +5 gnd gnd gnd intmic t o logic unit t o speaker j5005 t o rf unit j4005 clone gnd gnd vcc gnd gnd clk data enb add "5000" to each indicated part number on the unit f...

  • Page 32

    T o rf unit extptt 1 1 8 5 8 4 1 5 8 4 1 1 9 16 30 30 exmic add "5000" to each indicated part number on the unit for the actual part number. Note: rf-agc clone sidet intsp extsp spe agc r5 (nc) if gnd low mod tmut (nc) vcc gnd wx +5 lok data enb clk shift gnd gnd gnd 5v 9 - 5 • bottom view (main uni...

  • Page 33

    1 2 ds6001 3 clr 4 5 6 7 8 9 ent 0 mr f add "6000" to each indicated part number on the unit for the actual part number. Note: 9 - 6 9-6 logic unit [ic-a22/e] • top view.

  • Page 34

    T o ptt unit r30 8 8 5 5 1 1 4 4 8 14 8 7 1 1 25 x1 26 50 51 75 76 100 up de down lok trc shift ptt low tmut gnd gnd nav sql beep deto afon wx anl gnd gnd gnd gnd +5 gnd gnd gnd intmic gnd clone gnd vcc gnd gnd clk data enb 8 5 5 1 1 4 4 r10k pttsw gnd r12k gnd add "6000" to each indicated part numb...

  • Page 35

    1 2 ds6001 3 clr 4 5 6 7 8 9 ent 0 mr f add "6000" to each indicated part number on the unit for the actual part number. Note: 9 - 8 9-7 logic unit [ic-a3/e] • top view.

  • Page 36

    T o ptt unit r30 1 25 26 50 51 75 76 100 up de down lok trc shift ptt low tmut gnd gnd nav sql beep deto afon wx anl gnd gnd gnd gnd +5 gnd gnd gnd intmic gnd clone gnd vcc gnd gnd clk data enb 8 x1 5 1 4 r10k pttsw gnd r12k gnd add "6000" to each indicated part number on the unit for the actual par...

  • Page 37: Section 10

    Section 10 voltage diagrams 10 - 1 10-1 main unit voltage line explanatory notes tx line rx line j6001 to logic unit j6002 to logic unit vcc r5 ta75s393f ic5007 trc +5 un9211(a3/e) unr9211j(a22/e) q5029 1k r5090 - + extsp ptt unit logic unit main unit to main unit spe intsp if hv vcc +5v 220 c5020 v...

  • Page 38

    10 - 2 10-2 rf unit voltage line explanatory notes tx line rx line common line 0.001 c4144 3sk230 q4001 g1 g2 0.001 c4042 560k r4023 5v 2sc4215 q4003 tune 0.001 c4055 10k r4034 0.001 c4158 22p c4047 0.001 c4119 unit j5003 to main unit j5004 to main 0.001 c4125 0.001 c4147 cr-456 x4001 10p c4101 9p c...

  • Page 39

    10 - 3 10-3 logic unit voltage line explanatory notes logic unit 2sc4211 q6002 ptt enb data clk lbatt sql lok vcc j i h g f e d c b a r33 r32 r31 24lc08bti/sw ic6002 2.2k r6008 0.1 c6008 3.9k r6009 2sc4211 q6003 2sb1132 q6004 2sc4211 q6005 18k r6020 18k r6027 un9211(a3/e) unr9211j(a22/e) q6006 2sa16...

  • Page 40

    10 - 4 voltage line explanatory notes tx line logic unit 220k r6127 j a b c d g f e i h d6115 ma111 vors vorc 0.1 c6122 ic-a22/e only em-140 mc6001 intmic ma8051 d6014 33k r6021 0.001 c6011 xp4315 q6108 +5 un9213(a3/e) unr9213j(a22/e) q6110 330k r6137 ma111 d6116 0.01 c6119 47k r6135 390k r6136 0.1 ...

  • 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) ...

  • Page 42

    1-1-32, kamiminami, hirano-ku, osaka 547-0003, japan s-14201hz-c1 printed in japan © 2005 icom inc..