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S-14115HZ-C1-

q

July. 2007

VHF AIR BAND TRANSCEVER

iC-a24
iC-a24e
iC-a6
iC-a6e

1
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Summary of Contents for IC-A24

Page 1: ...S 14115HZ C1 q July 2007 VHF AIR BAND TRANSCEVER iC a24 iC a24e iC a6 iC a6e...

Page 2: ...4 Quantity required ORDER EXAMPLE 1110003491 S IC TA31136FNG IC A24 RF UNIT 5 pieces 8820001210 Screw 2438 screw IC A24 Top cover 10 pieces Addresses are provided on the inside back cover for your co...

Page 3: ...UPPLY CIRCUITS 4 4 4 5 CPU PORT ALLOCATIONS 4 5 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARIOTION 5 1 5 2 SOFT WEAR ADJUSTMENT 5 3 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTIO...

Page 4: ...odulation EUR Hum and noise ratio More than 35 dB GEN USA CHN Spurious emissions More than 46 dB GEN USA CHN except operating frequency 62 5 kHz range Harmonic spurious emissions Less than 36 dBm EUR...

Page 5: ...IC2 TC4W53FU PLL IC IC3 TB31207AFN R5S regulator Q20 UNR9115J RX 1st mixer Q12 3SK299 RF amplifier Q11 3SK293 T5V regulater Q7 2SB1132 Q8 2SC4211 D7 MA111 2nd IF IC IC1 TA31136FN VOR switching Q19 UN...

Page 6: ...2 Remove VOL knob B and DIAL knob C 3 Unscrew the ANT nut D 4 Unscrew 3 screws E 5 Disconnect the connector F from J4 and remove the LOGIC RF unit from the Front panel REMOVING THE LOGIC UNIT 1 Remove...

Page 7: ...1 3 1ST MIXER AND 1ST IF CIRCUITS RF UNIT The 1st mixer circuit converts the received signal into a fixed frequency of the 1st IF signal with a PLL output frequency By changing the PLL frequency only...

Page 8: ...ed at the OP amplifier IC18 pins 13 14 and are then applied to the AF power amplifier IC6 pin 4 to obtain the specified audio level after being passed through the electric volume IC17 pins 21 22 The a...

Page 9: ...signals to the CPU IC1 When the transceiver is set in the navigation band 108 000 117 975 MHz the VORON port of the CPU IC1 pin 118 becomes HIGH turning the VOR circuit ON via Q15 Q15 controls a 5 V...

Page 10: ...7 R24 R23 C38 From the D A converter IC16 pin 4 ALC amplifier Pre drive Q4 Q3 Q2 T5 T5 Q1 R11 VCC VCC amplifier Driver amplifier Power PWR DET LPF To the antenna D2 D3 RFDETV signal to the CPU LOGIC u...

Page 11: ...R5S regulator circuit Q20 using R5C signal from the CPU LOGIC unit IC1 The output voltage is ap plied to the RF amplifier RF unit Q12 and 1st IF amplifier RF unit Q13 etc 4 3 PLL CIRCUITS RF UNIT A P...

Page 12: ...the battery voltage de tection 38 BEEP Outputs BEEP audio signals 109 PSTB Outputs strobe signal to the PLL IC RF unit IC3 110 PDATA Outputs data signals to the PLL IC RF unit IC3 111 PCK Outputs cloc...

Page 13: ...n power OFF Disconnect OPC 478 U UC from the transceiver 6 Push and hold CLR and SQL then turn power ON OPERATING ON THE ADJUSTMENT MODE Store the adjustment value ENT Change the adjustment item UP 12...

Page 14: ...BATTERY TERMINAL Standard signal generator 0 1 V to 32 mV 127 dBm to 17 dBm CAUTION DO NOT transmit while an SSG is connected to the antenna connector To SP To MIC DC ammeter DC POWER SUPPLY 7 2 V 5...

Page 15: ...T 1 Operating frequency 127 500 MHz Connect a DC ammeter between the battery terminal and DC power supply 7 2 V Measure the current at 00 point B Rotate DIAL to adjust the current B 150 mA Push ENT ke...

Page 16: ...5 MHz Transmitting 4 Operating frequency 127 500 MHz Connect an 11 V DC power supply to the DC 11V jack Transmitting 5 Operating frequency 118 025 MHz Transmitting 6 Operating frequency 136 975 MHz Tr...

Page 17: ...tenna connector and set as Level 114 dBm 0 45 V for IC A24 117 dBm 0 32 V for IC A6 No modulation Receiving Push ENT key 3 Connect an SSG to the antenna connector and set as Level 82 dBm 18 V No modul...

Page 18: ...l 90 dBm 7 1 V Modulation 9960 Hz 10 30 Hz 30 Bearing 0 Receiving Push ENT key VOR PHASE IC A24 only 1 Operating frequency 108 000 MHz Connect a VOR tester to the antenna connector and set as Level 60...

Page 19: ...DER DESCRIPTION M H V NO NO LOCATION R79 7030005290 S RES ERJ2GEJ 682 X 6 8 k IC A24 E only B 15 9 21 9 R80 7030005100 S RES ERJ2GEJ 154 X 150 k IC A24 E only B 13 8 20 1 R81 7030008400 S RES ERJ2GEJ...

Page 20: ...C157 4030017440 S CER ECJ0EC1H221J B 55 3 27 2 C158 4030017440 S CER ECJ0EC1H221J B 56 2 27 2 C159 4030017440 S CER ECJ0EC1H221J B 58 9 27 2 C160 4030017460 S CER ECJ0EB1E102K B 52 4 33 5 C161 403001...

Page 21: ...unt RF UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION D52 1790001250 S DIO MA2S111 TX T 62 9 37 5 FI1 2030000390 S MLH FL 378 30 05 MHz except AUS T 67 2 24 3 2030000610 S MLH DSF753SBFFL 4130 05MHZ...

Page 22: ...7 R189 7030005120 S RES ERJ2GEJ 102 X 1 k B 104 9 29 5 R192 7030010010 S RES ERJ2RKF 334 X 330 k T 98 6 34 2 S Surface mount RF UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION R193 7030010020 S RES ER...

Page 23: ...5 4030016790 S CER ECJ0EB1C103K B 74 7 2 2 C96 4030016930 S CER ECJ0EB1A104K B 75 6 3 5 C97 4030016790 S CER ECJ0EB1C103K T 70 5 11 4 S Surface mount RF UNIT REF ORDER DESCRIPTION M H V NO NO LOCATION...

Page 24: ...R ECJ0EC1H221J T 78 3 28 8 C342 4030017460 S CER ECJ0EB1E102K B 91 2 15 7 C347 4030016930 S CER ECJ0EB1A104K B 79 5 11 1 C348 4030016930 S CER ECJ0EB1A104K B 89 3 6 7 C350 4030011600 S CER C1608 JB 1E...

Page 25: ...W except A24E A6E 2 MP31 8930065090 2791 PET SHEET 1 MP32 8930065140 2791 MIC SPONGE 1 MP33 8860001350 2791 EARTH PLATE 1 MP35 8810009561 Screw BT B0 2X6 NI ZK3 BT 2 MP36 8810009511 Screw BT B0 2X4 NI...

Page 26: ...C MP5 C MP1 C MP25 C MP26 C SP1 C W1 C MP16 C MP3 C MP4 C MP12 C MP11 C MP23 C MP19 C MP20 C MP1 R S1 R J2 R J5 R J1 R S2 R MP37 C MP2 C MP33 C MP13 C MP15 C MP24 C MP22 C MP36 C MP35 C MP38 C MP14 C...

Page 27: ...2 D2 D1 D1 G2 S2 G1 S1 D S G2 G1 B E C B E C B E C B E C B E C E1 C2 B1 C1 E2 B2 E1 C2 B1 C1 E2 B2 B1 E B2 C1 C2 B1 E B2 C1 C2 E1 B1 B2 C1 C2 2SA1586 GR 2SA1588 GR 2SB1132 T100 R 2SB1182 TL Q 2SB1201...

Page 28: ...UTS LOGIC UNIT TOP VIEW PWR F CLR ANL 121 5 3 2 1 6 5 4 9 8 7 MR 0 ENT SQL DS2 DS3 DS5 DS6 DS7 DS8 DS9 DS10 MC1 H0 H5 H10 H15 H20 H25 H30 H35 H40 H45 H50 H55 H60 H65 H70 H75 H80 H85 H90 V0 V5 V10 V15...

Page 29: ...170 C171 C172 C173 C174 C175 C176 C177 C178 C179 C180 C181 C182 C183 C184 C600 C602 C603 C604 C605 C606 C607 C608 C609 C610 C611 C612 C613 C614 C615 C616 C617 C618 C619 C620 C621 C622 C623 D1 D2 D5 D6...

Page 30: ...C311 C312 C313 C315 C316 C317 C318 C319 C330 C331 C335 C336 C337 C338 C339 C340 C350 C362 C363 C384 C385 C387 C410 C412 C413 C415 C417 C429 C430 CP4 D1 D4 D5 D6 D8 D30 D31 D37 D38 D39 D42 D45 D46 D47...

Page 31: ...2 D23 D27 D29 D32 D36 D40 D41 D43 D44 EP3 EP5 EP6 EP7 EP8 EP10 EP11 EP15 IC1 IC2 IC3 IC5 IC6 IC13 IC17 L4 L17 L18 L21 L22 L23 L24 L38 L42 L50 L51 L52 L68 L70 L73 L74 L75 L80 L81 L82 L83 L84 L85 L86 MP...

Page 32: ...4 Q57 XP1113 Q33 2SC4116 D1 D8 D9 HVU131TRF 3 T5 D29 1SV271 Q9 2SD1819A D13 MA2S304 Q10 2SD1819A Q11 3SK293 D14 D16 D44 D43 MA2S077 MA2S304 4 Q12 3SK299 Q13 2SC4215 29 6MHz IC3 TB31207AFN Q45 2SK880 R...

Page 33: ...1 S10 62 S11 63 S12 64 S13 65 S14 66 S15 67 S16 68 S17 69 S18 70 S19 71 S20 72 S21 73 S22 74 S23 75 P90 S24 76 P91 S25 77 P92 S26 78 P93 S27 79 P94 S28 80 P95 S29 81 P96 S30 82 P97 S31 83 P80 S32 84 P...

Page 34: ...R212 47K 1 5P C317 0 001 C46 10U L57 47K R242 MPZ2012S331A EP7 MA2S111 D32 0 001 C101 MA77 D6 0 001 C278 0 001 C84 0 1 C96 0 001 C309 68 R337 0 01 C100 Q33 2SC4116 L38 0 27U 82P C398 150P C368 R133 2...

Page 35: ...lenwood Centre 150 6165 Highway 17 Delta B C V4K 5B8 Canada Phone 1 604 952 4266 Fax 1 604 952 0090 URL http www icomcanada com E mail info icomcanada com Unit 1 103 Garden Road Clayton VIC 3168 Austr...

Page 36: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14115HZ C1 q 2004 2007 Icom Inc...

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