1. DL manuals
  2. Icom
  3. Transceiver
  4. IC-M32
  5. Service Manual

Icom IC-M32 Service Manual

Other manuals for IC-M32: Instruction Manual, Instruction Manual
Manual is about: VHF

Summary of IC-M32

  • Page 1

    Vhf marine transceiver ic-m32.

  • Page 2

    Introduction danger ordering parts repair notes this service manual describes the latest service information for the ic-m32 vhf marine transceiver at the time of publication. Never connect the transceiver to an ac outlet or to a dc power supply that uses more than 10 v. This will ruin the transceive...

  • 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 transmitter circuits . . . . . . ....

  • Page 4: Section 1 Specifications

    1 - 1 ‘ ‘ general • frequency coverage : 156.025–157.425 mhz 156.050–163.275 mhz • type of emission : 16k0g3e • antenna impedance : 50 Ω • mic impedance : 2 k Ω • audio impedance : 8 Ω • power supply requirement : 7.2 v dc (negative ground; supplied battery pack) • current drain (approx.) : transmit...

  • Page 5

    1 - 2 * low power only note: channels 3, 21, 23, 61, 64, 81, 82 and 83 cannot be used by the general public in usa waters. Can 21a 22a 23 24 25 26 27 28 60 61a 62a 64 64a 65a 66a* 67 68 69 70 71 72 can 73 74 77* 78a 79a 80a 81a 82a 83 83a 84 85 86 87 88 can 01 02 03 04a 05a 06 07a 08 09 10 11 12 13*...

  • Page 6: Section 2

    2 - 1 section 2 inside views • main unit bottom view top view antenna switching circuit (d90: 1sv307) 1st mixer (q150: 3sk299) vco circuit if detector ic (ic170: ta31136fn) pll ic (ic1: µpd3140gs) d/a converter (ic190: m62363fp-650c) cpu (ic360: m37560m8a-700gp) eeprom (ic340: br24l16fv) mic amplifi...

  • Page 7: Section 3

    3 - 1 main unit chassis mp31 h h i h section 3 disassembly instructions ¡ ¡removing the rear panel ¡ ¡removing the chassis unit rear panel a b c c rubber front panel b a front panel chassis unit mp31 e g d f (speaker connector) q unscrew 1 screw, a (2 × 10 mm), and remove 1 washer, b. W unscrew 3 sc...

  • Page 8

    4 - 1 4-1 receiver circuits 4-1-1 antenna switching circuit (main unit) the antenna switching circuit functions as a low-pass filter while receiving and as resonator circuit while transmitting. The circuit does not allow transmit signals to enter receiver circuits. Received signals from the antenna ...

  • Page 9

    4 - 2 4-1-5 squelch circuit (main unit) the noise squelch circuit cuts out af signals when no rf signals are received. By detecting noise components in the af signals, the squelch circuit switches the af mute switch. A portion of the af signals divided by c175 from the fm if ic (ic170, pin 9) are ap...

  • Page 10

    4 - 3 4-3 pll circuit (main unit) a pll circuit provides stable oscillation of the transmit fre- quency and receive 1st lo frequency. The pll output com- pares the phase of the divided vco frequency to the refer- ence frequency. The pll output frequency is controlled by the divided ratio (n-data) of...

  • Page 11

    4 - 4 4-5 port allocations 4-5-1 cpu (ic360) pin number 1 2 3 4 5 6 7 10 12 13 14 15 16 18 19 20 22 23 24 27 30 31 39 40 41 42 port name rssiv noisv battv tdetv tempv sck sdata leds beep plst dast 5vs lcds esck clin clout pwsw unlk esda tdec ptt wet scan h/l vol dow sql description input port for th...

  • Page 12

    5 - 1 5-1 preparation when adjusting ic-m32, the optional cs-m32 cloning software (rev. 1.0 or later), opc-478 cloning cable are required. ■ before entering the adjustment mode • cloning the adjustment frequency 156.800 mhz on the programmable ch. (no select poc function poc on on the adjustment fre...

  • Page 13

    5 - 2 to the antenna connector to [mic] jack audio generator frequency counter caution! Do not transmit while an ssg is connected to the antenna connector. Ad-98fsc optional stud-bnc adapter attenuator 40 db or 50 db fm deviation meter rf power meter 0.1 10 w/50 standard signal generator 0.1 v to 32...

  • Page 14

    5 - 3 5-2 pll and rx sensitivity adjustments lock voltage rx sensitivity adjustment adjustment adjustment condition measurement value point unit location unit adjust 1 2 1 • operating frq. : 156.800 mhz • receiving • operating frq. : 156.800 mhz • output power : low • transmitting • operating frq. :...

  • Page 15

    5 - 4 1 1 2 3 1 1 2 • operating frq. :156.800 mhz • output power : low • connect an rf power meter or a 50 Ω dummy load to the antenna connector. • transmitting • operating frq. : 156.800 mhz • output power : hi • transmitting • output power : low • transmitting • output power : extra-low • transmit...

  • Page 16: Section 6

    [main unit] [main unit] ic1 1130007610 s.Ic µpd3140gs-e1 (ds8) b ic50 1120002830 s.Ic njm2125f-te1 t ic170 1110003200 s.Ic ta31136fn (el) b ic190 1190000350 s.Ic m62363fp-650c b ic200 1110003780 s.Ic njm2902v-te1 b ic220 1110005350 s.Ic njm2870f05-te1 t ic260 1140003830 s.Ic tc4w66f (te12l) b ic280 ...

  • Page 17

    [main unit] r134 7030003330 s.Resistor erj3geyj 121 v (120 Ω) b r150 7030003320 s.Resistor erj3geyj 101 v (100 Ω) b r151 7030003500 s.Resistor erj3geyj 332 v (3.3 k Ω) b r152 7030003460 s.Resistor erj3geyj 152 v (1.5 k Ω) b r153 7030003460 s.Resistor erj3geyj 152 v (1.5 k Ω) t r154 7030003680 s.Resi...

  • Page 18

    [main unit] [main unit] c75 4030007050 s.Ceramic c1608 ch 1h 220j-t t c80 4030006860 s.Ceramic c1608 jb 1h 102k-t t c81 4030007040 s.Ceramic c1608 ch 1h 180j-t t c82 4030007040 s.Ceramic c1608 ch 1h 180j-t t c83 4030007050 s.Ceramic c1608 ch 1h 220j-t t c84 4030011530 s.Ceramic c1608 ch 1h 110j-t t ...

  • Page 19

    [chassis unit] j31 6910014190 connector 2497 ant connector sp1 2510001092 speaker 036d0801b w1 8900010960 cable opc-1129 m.=mounted side (t: mounted on the top side, b: mounted on the bottom side) s.=surface mount 6 - 4 ref order description m. No. No..

  • Page 20: Section 7

    7 - 1 section 7 mechanical parts and disassembly screw abbreviations b0, bt: self-tapping, zk: black ni-zu: nickel-zinc, sus: stainless ph: pan head, fh: flat head ep1 ep2 ep4 ep5 mp1 mp2 j 31 6910014190 2497 ant connector 1 sp 1 2510001092 speaker 036d0801b 1 w 1 8900010960 cable opc-1129 1 mp 1 82...

  • Page 21

    7 - 2 a b mp1 (c) sp1 (c) note2 note1 note1 mp4 (c) mp46 (c) mp6 (c) note3 mp7 (c) note3 w1 (c) mp8 (c) mp9 (c) mp5 (c) note2 mp361 (m) ds246 (m) mp360 (m) ep360 (m) j31 (c) note1 mp31 (c) mp42 (c) mp42 (c) note4 mp21 (m) mp43 (c) mp40 (c) mp36 (c) mp35 (c) mp33 (c) mp37 (c) mp44 (c) mp362 (m) mp39 ...

  • Page 22

    ¢ ¢ bc-150 charger parts list ¡ ¡electrical parts ¢ ¢ bc-150 voltage diagram ¢ ¢ bc-150 board layout ¡ ¡top view ¡ ¡bottom view ref. No. Order no. Description qty. Mp1 8810001460 screw a0 3.5 x 20 sus 2 [accessories] ref. No. Order no. Description qty. Mp1 8930057120 2523 terminal 1 mp2 8930057120 2...

  • Page 23: Section Parts

    8 - 1 section parts list section 8 semi-conductor information 3sk299 u73 (symbol: u73) 2sc4215 o (symbol: qo) 2sc4226 r25 (symbol: r25) dtc144 tu (symbol: 06) xp6501 ab (symbol: 5n) un911 h (symbol: 6p) rd01mus1 (symbol: k2) rd07mvs1 (symbol: rd07mvs1) • transistor and fet’s b e c b e c dta144 eua (...

  • Page 24

    9 - 1 section 9 board layouts main unit • top view ds246 16 scn h/l sql ch/wx + – vol vol lock moni u/i/c dual tag tag 9 sp1 clone spo afout mic gnd + – mic the combination of this page and the next page shows the unit layout in the same configuration as the actual p.C. Board..

  • Page 25

    9 - 2 • bottom view clone spo afout mic gnd j250 ant mic mc250 + – the combination of this page and the previous page shows the unit layout in the same configuration as the actual p.C. Board..

  • Page 26

    10 -1 section 10 block diagram explanatory notes note: tx line rx line common line lpf ant sw antenna j1 pwr amp pre drive bpf rf amp bpf tx/rx sw buff bpf apc ctrl buff buff buff bpf if amp fil loop vcc vcc lpf x170 cdbc450cx24 450khz bpf limit amp lpf af mute af amp x1 cr-766 amp vcc lpf vcc 5vs r...

  • Page 27

    11 - 1 section 11 voltage diagram detm micm detin deto 1 2 3 4 5 6 7 14 13 12 11 10 9 8 8 7 6 5 1 2 3 4 5v detm mico micin r281 33 k r290 33 k cpu5v volup detm micm afvs r5vs plst dast nc vcc nc vin ripple 10 9 8 7 6 pout pwgnd pregnd phase nf 1 2 3 4 5 clout pwsw clin afms a0 a1 a2 vss 8 7 6 5 vcc ...

  • Page 28

    11 - 2 fcon pcon vcc1 in1 enb clk data t1 lok cp1 fi1 fo1 gnd1 in2 vcc2 xb xi xo gnd2 cp2 fi2 fo2 oscin oscout mixout vcc ifin dec filout filin mixin gnd n-rec n-det rssi ifout quad afout 3 4 1 1 2 3 4 5 6 7 8 vin1 vout1 vput2 vin2 vdd ld clk di vin3 vout3 vout4 vin4 vin8 vout8 vout7 vin7 gnd reset ...

  • Page 30

    S-14008mz-c2 © 2003 icom inc. 1-1-32, kamiminami, hirano-ku, osaka 547-0003, japan.