Vhf marine transceiver im502 service manual.
Introduction this service manual describes the latest service information for the ic-m502 vhf marine transceiver at the time of publication danger never connect the transceiver to an ac outlet or to a dc power supply that uses more than 16 v. This will ruin the transceiver. Do not expose the transce...
Table of contents section 1 specifications section 2 inside views 2 - 1 ic-m502 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1 2 - 2 hm-127 (optional unit) . . . . . . . . . . . . . . . . . . . . . . ....
Section 1 specifications ‘ ‘ general • frequency coverage : 156.025–157.425 mhz (tx) 156.050–163.275 mhz (rx) • mode : 16k0g3e (fm) 16k0g2e (dsc) • usable channels : all international and usa channels • power supply requirement : 13.8 v dc (negative ground) • usable temperature range : –20˚c to +60˚...
1 - 2 * 1 low power only, * 2 receive only note: simplex channels 3, 21, 23, 61, 64, 81, 82 and 83 cannot be lawfully used by the general public in usa waters. Can 21a 22a 23 24 25 26 27 28 60 61a 62a 64 64a 65a 66a* 1 67 68 69 70* 2 71 72 can 73 74 77* 1 78a 79a 80a 81a 82a 83 83a 84 85 86 87 88 ca...
Section 2 inside views 2 - 1 2-1 ic-m502 af power amplifier (ic14: la4425a) fm if ic (ic1: ta31136fn) 2nd if filter (fi3: alfy450e) main mpu (ic16: mb90f583bpfv-g) pll ic (ic2: µpd3140gs) vco circuit drive amplifier (q12: 2sc2954) 1st mixer* (q3: 3sk166) reset ic (ic15: s-80928anmp) * located under ...
9 - 4 • top view r304 1 25 26 50 1 1 1 1 4 4 4 8 8 8 5 5 5 7 14 8 51 75 76 100 1 8 16 9 1 1 10 20 11 4 8 5 for flash 1 2 9 10 j1 gnd tmode tres sot0 gnd +5v taux3 p01 sin0 sck0 1 9 2 to optional unit ut-98 or ut-112 10 j6 +5v gnd optin scon gnd gnd gnd sck sdata opstb mici deti mico deto w1 to vol u...
1-1-32, k s-13710hz-cd © 2000 icom inc..
