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9 - 3

• RF UNIT (TOP VIEW)

1

4

8

5

14

8

1

7

MIC

ANT

CHASSIS
J1

PTT

from Battery pack

CHASSIS MP13

VCCBT

LIGHT

SP

DCIN

GND

20

21

1

40

to LOGIC unit J1

J6

LVIN

UNLK

GND

OE

INTMIC

EXTREGC

CHGVH

CHGIH

CHGC

HV

DCIN

BEEP
PSTB

VCC
VCC
PCK

+5V

RFSTB

PDATA

GND
GND

DA2STB

GND

DETO

PTT

SBATT

JACKDET

SDATA

SCK

CLONE

VIN

TXC

DA1STB

INTPTT

LIGHT

RFDETV

VORON

VORDET

RSSI

SP

2
1

to CHASSIS

SP1

J4

GND

C3

C4

C5

C6

C7

C8

C10

C11

C12

C13

C14

C15

C16

C19

C22

C24

C25

C26

C29

C30

C31

C32

C33

C34

C35

C36

C37

C38

C39

C40

C41

C42

C43

C44

C45

C46

C47

C48

C49

C50

C53

C54

C86

C87

C88

C89

C90

C97

C100

C121

C125

C126

C127

C130

C155

C172

C173

C174

C176

C180

C184

C186

C187

C188

C195

C196

C202

C203

C210

C211

C212

C221

C222

C224

C225

C226

C227

C228

C246

C247

C249

C251

C253

C254

C255

C256

C257

C258

C259

C261

C264

C269

C272

C287

C293

C294

C295

C296

C297

C299

C301

C302

C306

C307

C308

C309

C310

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

D48

D51

D52

EP2

EP4

EP13

EP14

EP16

FI1

FI2

IC15

IC16

IC18

IC19

J1

J2

J4

J5

J6

L1

L2

L3

L5

L6

L7

L8

L10

L11

L12

L13

L14

L15

L16

L44

L45

L46

L55

L56

L57

L58

L59

L60

L63

L64

L67

L71

L72

L78

MP3

Q2

Q3

Q4

Q5

Q6

Q13

Q22

Q33

Q35

Q36

Q52

Q56

Q57

Q58

Q59

Q60

R14

R15

R16

R17

R18

R19

R20

R21

R22

R24

R25

R26

R27

R28

R29

R30

R31

R32

R33

R34

R35

R36

R37

R38

R39

R68

R69

R70

R81

R82

R116

R117

R118

R130

R142

R145

R147

R148

R149

R150

R160

R161

R162

R163

R192

R193

R194

R195

R212

R213

R214

R215

R216

R217

R218

R219

R228

R231

R232

R234

R235

R236

R237

R242

R244

R245

R246

R247

R248

R249

R250

R254

R256

R258

R260

R262

R265

R266

R269

R270

R283

R294

R316

R317

R318

R319

R320

R321

R322

R323

R326

R327

R328

R329

R330

R331

R332

R333

R338

2

S

1

S

X1

H0

H5

H10

H15

H20

H25

H30

H35

H40

H45

H50

H55

H60

H65

H70

H75

H80

H85

H90

H95

H100

H105

H110

H115

V0

V5

V10

V15

V20

V25

V30

V35

V40

V45

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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