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Icom IC-M35, Service Manual

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TABLE OF CONTENTS

SECTION 1  SPECIFICATIONS

SECTION 2  INSIDE 

VIEWS

SECTION 3  DISASSEMBLY 

INSTRUCTION

SECTION 4  CIRCUIT 

DESCRIPITON

 

4-1 

RECEIVER CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-1

 

4-2 

TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-2

 

4-3 

FREQUENCY SYNTHESIZER CIRCUITS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-3

 

4-4 

VOLTAGE BLOCK DIAGRAM  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-3

 

4-5 

PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-4

SECTION 5  ADJUSTMENT 

PROCEDURES 

 

5-1 

PREPARATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5-1

 

5-2 

FREQUENCY ADJUSTMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5-3

 5-3 

RECEIVE 

ADJUSTMENTS 

 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5-4

 

5-4 

TRANSMIT ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5-5

SECTION 6  PARTS 

LIST

SECTION 7  MECHANICAL 

PARTS

SECTION 8  BOARD 

LAYOUTS

SECTION 9  BLOCK 

DIAGRAM

SECTION 10 VOLTAGE 

DIAGRAM

Summary of Contents for IC-M35

Page 1: ...S 14520XZ C1 Oct 2008 VHF MARINE TRANSCEIVER ...

Page 2: ...nce Icom Icom Inc and ICOM logo are registered trademarks of Icom Incorporated Japan in the United States the United Kingdom Germany France Spain Russia and or other countries ORDERING PARTS 1 Make sure that the problem is internal before disassembling the transceiver 2 DO NOT open the transceiver until the transceiver is disconnected from its power source 3 DO NOT force any of the variable compon...

Page 3: ...ER CIRCUITS 4 2 4 3 FREQUENCY SYNTHESIZER CIRCUITS 4 3 4 4 VOLTAGE BLOCK DIAGRAM 4 3 4 5 PORT ALLOCATIONS 4 4 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 FREQUENCY ADJUSTMENTS 5 3 5 3 RECEIVE ADJUSTMENTS 5 4 5 4 TRANSMIT ADJUSTMENTS 5 5 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS SECTION 8 BOARD LAYOUTS SECTION 9 BLOCK DIAGRAM SECTION 10 VOLTAGE DIAGRAM ...

Page 4: ...oad 1 2 IC M36 1 1 IC M35 ï GENERAL Frequency coverage Transmit 156 000 161 450 MHz Receive 156 000 163 425 MHz Mode FM 16K0G3E Channel spacing 25 kHz Power supply requirement BP 251 and BP 252 only Current drain at 7 4 V DC TX at 6 W 1 5 A typical at 5 W 1 3 A typical at 1 W 0 7 A typical at 0 5 W 0 6 A typical RX Max audio Internal speaker 0 3 A typical External speaker 0 2 A typical Power save ...

Page 5: ...650 156 700 156 750 156 800 156 850 156 900 156 950 157 000 156 550 156 600 156 650 156 700 156 750 156 800 156 850 161 500 161 550 161 600 21 22 23 24 25 26 27 28 60 61 157 050 157 100 157 150 157 200 157 250 157 300 157 350 157 400 156 025 156 075 161 650 161 700 161 750 161 800 161 850 161 900 161 950 162 000 160 625 160 675 62 63 64 65 66 67 68 69 70 71 156 125 156 175 156 225 156 275 156 325 ...

Page 6: ...1ST IF AMP Q151 AF POWER AMP IC362 CPU CLOCK X360 AF POWER AMP SWITCH Q230 PLL IC IC1 REFERENCE FREQUENCY OSCILLATOR X1 2ND IF FILTER FI170 PRE DRIVER AMP Q53 TX POWER AMP Q54 IF IC IC170 DISCRIMINATOR X170 3V REGULATOR IC2 INVERTER data interface IC364 CPU5V LINE REGULATOR IC220 AF MUTE SWITCH IC260 D A CONVERTER IC190 AF POWER AMP REGULATOR Q231 AMBIENT NOISE AMP IC363 5V REGULATOR Q225 CPU RESE...

Page 7: ...ew ANT nut from the antenna connector and 5 screws from the MAIN UNIT 3 Take off the chassis with MAIN UNIT from the front panel in the direction of the arrow REAR PANEL O ring Screw Screw FRONT PANEL MAIN UNIT CHASSIS Screw x4 MICROPHONE CABLE TO Unsolder Unsolder TOP SIDE TOP SIDE TOP SIDE BOTTOM SIDE MAIN UNIT MAIN UNIT MAIN UNIT Screw short x3 Screw long Unsolder ANT NUT ANT CONNECTOR TOP S 2 ...

Page 8: ...applied to the 1st mixer Q150 The quadrature detector is a frequency demodulator which uses a discriminator X170 as a phase delayer and provides demodulation without any adjustment SQUELCH CIRCUIT A portion of AF signals from the IF IC is level adjusted by the D A converter IC190 and applied to the noise amplifer IC170 R174 176 C179 180 Only noise components approx 30 kHz signal are amplified by t...

Page 9: ...gnals then applied to the VCO for frequency modulation TX AMPLIFIERS The frequency modulated signal from the VCO TX signal is passed through the LO SW D50 and amplified by the buffer AMP Q50 driver AMP Q53 and power AMP Q54 in sequence to obtain TX output power APC CIRCUIT A portion of TX output signal is rectified by D91 to be converted into the DC voltage which corresponds to TX power level IC50...

Page 10: ...F IC CPU VCO Q150 TX AMPs I C170 IC360 PLLO 2ND LO D22 D23 PLL control signal PLL IC1 is a PLL IC which contains prescaler programmable counter phase comparator and charge pump in its package The 21 25 MHz reference frequency signal is fed from X1 The loop filter for the VCO is composed by R8 R10 R22 C11 C13 and C24 4 4 VOLTAGE BLOCK DIAGRAM Voltage from the power supply is routed to the whole of ...

Page 11: ...er supply line control signal L VCO turned ON 85 AFVS AF power AMP control signal H AF Power AMP turned ON 87 S5VS S5V line control signal L While being power supplied 88 LOW TX power control signal 89 R5VS R5V line control signal L While receiving RX circuits activated 90 T5VS T5V line control signal L While transmitting TX circuits activated 97 TXMS MIC line mute signal L Mute 98 DETM RX AF line...

Page 12: ...ency range 0 1 300 MHz Frequency accuracy 1 ppm or better Input level Less than 1 mW AC millivoltmeter Measuring range 10 mV to 10 V Standard signal generator SSG Frequency range 0 1 300 MHz Output level 0 1 mV to 32 mV 127 to 17 dBm Attenuator Power attenuation 30 dB Capacity More than 10 W Speaker Impedance 50 Ω Capacity More than 1 W REQUIRED EQUIPMENTS 5 1 PREPARATION JIG CABLE EXT SPEAKER 1 W...

Page 13: ...tion folder e g C Program Files Icom CS M36 y After the installation is completed the InstallShield Wizard Complete will appear Then click Finish u Eject the CD i Program group CS M36 ADJ appears in the Programs folder of the start menu and CS M36 35 ADJ icon appears on the desk top screen ADJUSTMENT SOFTWARE SCREEN COMMON CONNECTION REFERENCE FREQUENCY TX POWER High TX POWER A High TX POWER Low T...

Page 14: ... FREQUENCY 1 Ref Freq CH 16 TX power Low Transmitting 1 Connect an RF power meter or a Dummy load to the antenna connector 2 Loose couple a Frequency counter to the antenna connector 3 Adjust the TX frequency 156 8000 MHz 5 2 FREQUENCY ADJUSTMENTS RF POWER METER 10 W 50 Ω JIG cable Loose Coupling FREQUENCY COUNTER 0 1 300 MHz LOCK VOLTAGE I O CHECK WINDOW Click to reload the parameter The values s...

Page 15: ... key of the PC Automatic adjustment RSSI NOTE RX SENSITIVITY MUST BE adjusted before RSSI Otherwise RSSI will NOT be adjusted properly Still more when RX SENSITIVITY is adjusted RSSI MUST BE re adjusted too 1 RSSI CH 16 Receiving 1 Connect a Signal genelator to the antenna connector and set it as specified as below 2 Push the ENTER key of the PC Automatic adjustment JIG cable STANDARD SIGNAL GENER...

Page 16: ...5 6 W Except AUS 4 7 W AUS Using BP 251 With alkaline batteries 1 RF Power A_High CH 16 TX power High Transmitting 2 0 W Low power Except FRG 2 RF Power Low CH 16 TX power Low Transmitting 0 75 W For FRG 2 RF Power E Low CH 16 TX power Low Transmitting 0 45 W RF POWER METER 10 W 50 Ω JIG cable Select an adjustment item using keys then set to the specified value using keys on the connected PC s key...

Page 17: ...ignals through the JIG cable see the illust below 3 Adjust the deviation 4 30 to 4 40 kHz Select an adjustment item using keys then set to the specified value using keys on the connected PC s keyboard 5 4 TRANSMIT ADJUSTMENTS continued EXT SPEAKER 1 W 8 Ω SETTING Frequency 1 kHz Level 25 mVrms Waveform Sine wave AUDIO GENERATOR 300 3000 Hz 1 500 mV AC MILLIVOLT METER 10 mV to 10 V 47 µF 4 7 µF OPC...

Page 18: ... NO LOCATION FI150 2030000350 MON 21R15AB FL 368 FI151 2030000481 MON 21R15AB FL 399A FI170 2020002410 CER LTM450FW JJE X1 6050011740 S XTA CR 766 TSS 6035B 21 250 MHz B 28 7 12 6 X170 6070000300 S DIS JTBM450CX24 JJE B 17 7 8 5 X360 6050012460 S XTA CR 834 SMD 49 7 9872 MHz B 91 5 32 2 L1 6200009141 S COI NLV25T 6R8J T 17 5 8 5 L20 6200011021 S COI ELJRF 82NJFB B 45 8 18 5 L21 6200003711 S COI NL...

Page 19: ... S RES ERJ2GEJ 102 X 1K B 15 7 26 3 R279 7030005030 S RES ERJ2GEJ 152 X 1 5K B 15 7 25 4 R284 7030005530 S RES ERJ2GEJ 100 X 10 B 44 6 45 7 R286 7030005050 S RES ERJ2GEJ 103 X 10K B 49 5 40 2 R288 7030005110 S RES ERJ2GEJ 224 X 220K B 50 1 39 R289 7030005050 S RES ERJ2GEJ 103 X 10K B 51 7 38 7 S Surface mount MAIN UNIT REF PARTS DESCRIPTION M H V NO NO LOCATION R300 7030005290 S RES ERJ2GEJ 682 X ...

Page 20: ... ECJ0EC1H470J HOL 4030017670 S CER ECJ0EC1H390J AUS C115 4030017380 S CER ECJ0EC1H050B B 65 9 22 8 S Surface mount MAIN UNIT REF PARTS DESCRIPTION M H V NO NO LOCATION C116 4030017570 S CER ECJ0EC1H040B B 63 9 24 C117 4030017370 S CER ECJ0EC1H3R5B USA B 77 6 22 5 4030017370 S CER ECJ0EC1H3R5B SEA 4030017350 S CER ECJ0EC1H020B CHN 4030017350 S CER ECJ0EC1H020B EUR 1 4030017350 S CER ECJ0EC1H020B EU...

Page 21: ...30017440 S CER ECJ0EC1H221J T 103 4 45 5 C417 4030017460 S CER ECJ0EB1E102K B 14 1 39 1 C421 4030016790 S CER ECJ0EB1C103K B 52 6 47 6 C422 4030016950 S CER ECJ0EB1A473K B 45 2 39 4 C423 4550004040 S TAN TEESVA 0J 685M8R B 54 3 44 5 C424 4030017460 S CER ECJ0EB1E102K B 75 8 37 6 C426 4030018860 S CER ECJ0EB0J105K B 73 9 42 1 C427 4030016930 S CER ECJ0EB1A104K B 74 4 43 3 C428 4030016960 S CER ECJ0...

Page 22: ... MP48 8930030920 1301 SHEET 1 MP50 8930071260 O RING BL 1 MP51 8930068980 2905 VENT SHEET 1 MP53 8930078050 3168 MIC CAP 1 MP54 8930078160 3168 PTT PLATE 1 MP55 8930078170 3168 MIC HOLDER 1 MP56 8810009561 SCREW BT B0 2X6 NI ZK3 BT 2 MP57 8810009511 SCREW BT B0 2X4 NI ZC3 BT 1 MP59 8810010091 SCREW BT B0 2X12NI ZK3 BT 2 MP60 8930078190 3168 WHITE SHEET 1 MP61 8930078740 3168 A WHITE SHEET 1 MAIN U...

Page 23: ... MP57 C J31 C MP22 C MP4 C MP48 C MP35 C MP55 C MC1 C MP56 C 2 MP23 C 2 MP24 C 2 MP25 C 2 MP42 3 C MP59 C 2 MP39 C 4 MP39 C 4 MP33 C 2 MP21 C EP360 M MAIN UNIT MP61 C MP18 C MC250 C DS246 M MP60 C MP15 C MP16 C MP53 C MP50 C MP1 C MP14 C MP2 C MP6 C MP54 C MP7 C MP5 C ...

Page 24: ...C374 C375 C380 C381 C386 C387 C393 C394 C410 C411 C412 C413 C414 C415 C432 CP240 CP245 C P 3 5 1 CP360 1 4 2 S D 0 4 2 S D DS242 DS243 DS244 DS245 EP4 EP5 EP6 EP7 IC50 IC360 L1 MC250 Q151 Q240 Q351 Q352 Q357 R47 R65 R66 R67 R68 R83 R153 R154 R155 R156 R170 R173 R240 R241 R242 R245 R361 R363 R364 R367 R371 R372 R373 R374 R381 R382 R383 R384 R386 R401 R447 R448 H0 H5 H10 H15 H20 H25 H30 H35 H40 H45 ...

Page 25: ...70 IC1 IC2 IC170 IC190 IC200 IC220 IC260 IC340 IC341 IC362 IC363 IC364 J250 J252 J253 L20 L21 L22 L23 L24 L25 L26 L50 L51 L53 L55 L56 L57 L58 L80 L81 L82 L90 L92 L93 L96 L97 L98 MP20 MP20 Q3 Q20 Q21 Q22 Q23 Q24 Q25 Q50 Q53 Q54 Q90 Q150 Q220 Q221 Q222 Q224 Q225 Q230 Q231 Q250 Q251 Q350 Q353 Q354 Q355 Q356 Q358 Q360 Q361 Q362 R1 R2 R3 R4 R5 R6 R7 R8 R10 R11 R12 R13 R20 R22 R23 R24 R25 R26 R27 R28 R2...

Page 26: ...00D IC200B IC200C Q361 2SA1586 WDECV VOLIN VOLO BEEP SQLO SQLI FCON MODC ERXDO TXMS RSSIV NOISV MODC PLLO 2ND LO DET FCON S 24CS64A0I T8T1 G KRC404E DS240 DS241 SML 512WW DS242 DS243 DS244 DS245 SML 311YT S11000 X360 CR 834 UPD78F0338GC SP KTA2015 KTA2015 KTA2015 Q224 KTC811U Q225 KTA1664 S 80942CNMC NJM2870 LM2902PWR PTT Int MIC SP MIC NJM2073M Q231 KTC811U BTYPE D350 1SS355 JTBM450CX24 LTM450FW ...

Page 27: ...B 4 GND 5 IN_B 6 IN_B 7 IN_A 8 IN_A 0 01 C421 10 R429 RSQ035P03TR Q230 1 2 3 4 5 6 270K R430 R276 180K 10K R431 R260 120K R262 18K R261 39K 0 047 C422 270 R427 15K R428 33K R432 10K R433 0 001 C424 LM2904PWR IC363 2 3 1 LM2904PWR IC363 6 5 7 LM2904PWR IC363 V 8 GND 4 0 1 C427 0 018 C428 0 018 C429 470P C430 4 7K R437 4 7K R440 15K R441 22K R444 1 5M R445 0 001 C432 1 8K R442 330K R446 0 1 C433 1 5...

Page 28: ...K R13 R175 27K R176 1K 0 R392 M B15E03SLPFV1 IC1 1 OSCI 2 OSCO 3 VP 4 VCC 5 DO 6 GND 7 XFIN 8 FI N 9 CLK 10 DAT 11 LE 12 PS 13 ZC 14 L F 15 P 16 R S 812C36AMC IC2 1 GND 2 VIN 3 VOUT 4 NC 5 NC 10K R39 10K R41 10K R43 10K R45 22K R40 22K R42 22K R44 22K R46 150 R37 0 001 C126 0 001 C132 0 1 C125 47P C127 0 1 C129 470P C128 0 001 C133 3 9K R47 MA2S7280G D353 22P C95 2P C98 33P C110 D92 KDV214E D93 KD...

Page 29: ...vice Phone 1 425 454 7619 Glenwood 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 Australia Phone 61 03 9549 7500 Fax 61 03 9549 7505 URL http www icom net au E mail sales icom net au 146A Harris Road East Tamaki Auckland New Zealand Phone 64 09 274 4062 Fax 6...

Page 30: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14520XZ C1 2008 Icom Inc ...

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