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S-14919XZ-C1
April 2013

VHF MARINE TRANSCEIVER

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Summary of Contents for IC-M73

Page 1: ...S 14919XZ C1 April 2013 VHF MARINE TRANSCEIVER ...

Page 2: ...model name and unit name 4 Quantity required ORDER EXAMPLE 1110003491 S IC TA31136FNG IC M73 MAIN UNIT 5 pieces 8820001210 Screw 2438 screw IC M73 Top cover 10 pieces Addresses are provided on the inside back cover for your convenience ORDERING PARTS 1 Make sure that the problem is internal before dis assem bling the transceiver 2 DO NOT open the transceiver until the transceiver is dis connected ...

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

Page 4: ...e reactance frequency modulation Maximum frequency deviation 5 kHz Frequency error 10 ppm 1 5 kHz 10 ppm Spurious emissions 68 dBc typical 0 25 µW Adjacent channel power 70 dB Audio harmonic distortion 10 at 60 deviation FM hum and noise 40 dB Audio frequency response 1 dB to 3 dB of 6 dB octave from 300 Hz to 3000 Hz Microphone impedance 2 kΩ RECEIVER Intermediate frequency 1st 21 7 MHz 2nd 450 k...

Page 5: ...IC430 MIC AMP IC200 FLASH ROM IC501 AFV LINE CONTROL Q231 AFV LINE CONTROL Q401 AF PWR AMP IC280 AF SW IC260 AF PWR AMP IC401 NOISE CANCELLER PLAYBACK RECORD IC IC500 AFV LINE CONTROL Q230 CPU 5V IC220 CPU IC360 BACKLIT LED DRIVER Q240 CPU CLOCK X480 AF MUTE IC504 DISCRIMINATOR X170 LPF IC432 5 V REGULATOR Q221 5 V REGULATOR Q225 ...

Page 6: ...F UNIT BOTTOM VIEW TX MUTE SW Q351 RF AMP Q90 VCC LINE CONTROLLER Q480 1st MIXER Q150 PLL IC IC1 3 3 V REGULATOR IC2 BUFFER Q3 5 V REGULATOR Q222 REFERENCE FREQUENCY OSCILLATOR X1 APC AMP IC50 1ST IF AMP Q151 BPF FI150 BPF FI151 ...

Page 7: ...MAIN UNIT REAR PANEL Screw 4 Screw 2 J251 MAIN UNIT MAIN UNIT CHASSIS Screw 5 J251 J251 MAIN UNIT SPEAKER CABLE LOCK PLATE FRONT PANEL CHASSIS J251 MAIN UNIT MAIN UNIT RF UNIT J300 FLAT CABLE CHASSIS 2 Removing the MAIN UNIT 1 Remove 5 screws from the MAIN UNIT 2 Disconnect 2 flat cables from the MAIN UNIT 3 Remove the MAIN UNIT from the CHASSIS BE CAREFUL about the flat cable and connector when s...

Page 8: ...4 1 RF UNIT UNSOLDER Solder remover CHASSIS CHASSIS Screw 3 RF UNIT 3 Removing the RF UNIT 1 Unsolder total of 7 points 2 Remove 3 screws from the RF UNIT 3 Remove the RF UNIT from the CHASSIS ...

Page 9: ...ithin the frequency coverage The received signal is filtered at the bandpass fil ter BPF and amplified at the RF amplifier The received signal from the antenna switch is passed through the two staged tunable BPFs D92 L92 C95 C97 and D93 L93 C99 C100 to filter out unwanted signal The filtered signal is applied to the RF amplifier Q90 The am plified signal is then applied to the 1st mixer Q150 throu...

Page 10: ... depending on the NOISV1 signal level to the AF power regulator Q230 Q231 and Q401 which turns the AF power amplifiers IC280 and IC401 ON or OFF 4 2 TRANSMIT CIRCUITS MICROPHONE AMPLIFIER CIRCUITS MAIN UNIT The AF signal from the microphone MIC signal is filtered and level adjusted at microphone amplifier circuits The AF signal from the microphone is passed through the MIC mute switch IC430A pins ...

Page 11: ...rsion The VCO output signal is buffer amplified by Q23 and Q24 While transmitting the VCO output signal is applied to the transmit amplifier circuit through the TX RX switch D50 While receiving the VCO output signal is applied to the 1st mixer Q150 through the TX RX switch D51 and the BPF L26 and C122 to be mixed with the received signal to pro duce the 21 7 MHz 1st IF signal A portion of the VCO ...

Page 12: ...he VCO Q21 Q22 D21 D23 is not activated O 13 T5VS T5V regulator RF UNIT Q222 control signal Low While transmitting High While receiving or in the power save mode O 14 LCDS LCD contrast select signal Low While Bright is selected High While Dark is selected O 15 LEDS B a c k l i g h t L E D D S 2 4 0 D S 2 4 3 DS250 DS253 control signal to the LED driver Q240 High While the backlight is ON O 25 RES ...

Page 13: ...I 112 CH WX Input port for the CH WX key MAIN UNIT S324 Low When the CH WX key is pushed I 113 16 Input port for the 16 C key MAIN UNIT S320 Low When the 16 C key is pushed I 114 SCAN Input port for the SCAN key MAIN UNIT S324 Low When the SCAN key is pushed I 115 H L Input port for the H L key MAIN UNIT S329 Low When the H L key is pushed I 117 VOXM AF mute switch IC430 pin 5 control High While t...

Page 14: ...nge 30 300 MHz Measuring range 0 to 10 kHz Standard signal generator SSG Frequency range 0 1 300 MHz Output level 20 dBµ to 90 dBµ 127 to 17 dBm AC millivoltmeter Measuring range 10 mV to 10 V Oscilloscope Frequency range DC 20 MHz Measuring range 0 01 20 V Attenuator Attenuation 30 dB Capacity More than 10 W Audio generator AG Frequency range 300 3000 Hz Output level 1 500 mV External speaker Inp...

Page 15: ...30 dB or more RF power meter 0 1 10 W 50 Ω Frequency counter DO NOT transmit while an SSG is connected to the antenna connector To CLONE line BLACK To MIC line WHITE To SP line RED JIG cable PC to USB port to RS 232C port OPC 478 RS 232C type OPC 478UC USB type OPC 922 ADJUSTMENT UTILITY ADJUSTMENT CONDITION REFERENCE FREQUENCY TX OUTPUT POWER FM MODULATION RX SENSITIVITY SQUELCH VOX ...

Page 16: ...T CONDITION MEASUREMENT VALUE UNIT OPERATION PLL LOCK VOLTAGE Verify 1 Operating CH 16 Receiving PC screen Click the I O check button on the ADJ M73 s screen see page 5 3 to open the I O check window as below 1 55 2 65 V Verify 2 Operating CH 16 Connect a dummy load or RF power meter to the antenna connector Transmitting REFERENCE FREQUENCY Ref Freq 1 Operating CH 16 Connect the RF power meter or ...

Page 17: ...ANSMIT OUTPUT POWER RF Power High 1 Operating CH 16 RF power High Transmitting Top panel Connect the RF power meter to the antenna connector 5 6 W Except AUS AUS 1 4 7 W AUS AUS 1 RF Power Mid dle 2 Operating CH 16 RF power Middle Transmitting 3 0 W RF Power Low 3 Operating CH 16 RF power Low Transmitting 0 75 W RF Power E Low 4 Operating CH 16 RF power Low Transmitting 0 45 W FM DEVIATION MOD 1 O...

Page 18: ...TION M H V NO NO LOCATION MAIN UNIT M Mounted side T Mounted on the Top side B Mounted on the Bottom side S Surface mount REF PARTS DESCRIPTION M H V NO NO LOCATION MAIN UNIT D350 1750001810 S DIO L1SS400T1G SLVJ B 80 3 29 4 D430 1750002020 S DIO DA2S10100L B 21 3 30 4 D431 1750001850 S DIO LDAN222T1G SLVJ B 70 6 34 0 X170 6070000310 S DIS JTBM450CX70 JJE B 53 3 23 5 X480 6050012460 S XTA CR 834 S...

Page 19: ...R553 7410001220 S ARR EXB28V103JX USA 10 B 22 5 8 5 7410001220 S ARR EXB28V103JX EXP 10 7410001220 S ARR EXB28V103JX EUR 11 7410001220 S ARR EXB28V103JX EUR 10 7410001220 S ARR EXB28V103JX UK 10 7410001220 S ARR EXB28V103JX FRG 10 7410001220 S ARR EXB28V103JX HOL 10 7410001220 S ARR EXB28V103JX AUS 10 M Mounted side T Mounted on the Top side B Mounted on the Bottom side S Surface mount REF PARTS D...

Page 20: ... V NO NO LOCATION MAIN UNIT R575 7030005120 S RES ERJ2GEJ 102 X 1K USA 10 B 73 4 22 5 7030005120 S RES ERJ2GEJ 102 X 1K EXP 10 7030005120 S RES ERJ2GEJ 102 X 1K EUR 11 7030005120 S RES ERJ2GEJ 102 X 1K EUR 10 7030005120 S RES ERJ2GEJ 102 X 1K UK 10 7030005120 S RES ERJ2GEJ 102 X 1K FRG 10 7030005120 S RES ERJ2GEJ 102 X 1K HOL 10 7030005120 S RES ERJ2GEJ 102 X 1K AUS 10 R576 7030005050 S RES ERJ2GE...

Page 21: ...16930 S CER C1005 JB 1A 104K T FRG 10 4030016930 S CER C1005 JB 1A 104K T HOL 10 4030016930 S CER C1005 JB 1A 104K T AUS 10 C527 4030016930 S CER C1005 JB 1A 104K T USA 10 B 13 9 19 4 4030016930 S CER C1005 JB 1A 104K T EXP 10 4030016930 S CER C1005 JB 1A 104K T EUR 11 4030016930 S CER C1005 JB 1A 104K T EUR 10 4030016930 S CER C1005 JB 1A 104K T UK 10 4030016930 S CER C1005 JB 1A 104K T FRG 10 40...

Page 22: ...T T 6 2 11 8 C51 4030017400 S CER C1005 CH 1H 220J T T 5 1 8 4 C52 4030017460 S CER C1005 JB 1H 102K T T 4 3 6 3 C53 4030017460 S CER C1005 JB 1H 102K T T 2 1 3 5 C54 4030017640 S CER C1005 CH 1H 150J T T 6 8 3 3 C55 4030017410 S CER C1005 CH 1H 240J T T 8 4 3 3 C56 4030016790 S CER C1005 JB 1E 103K T T 20 7 20 1 C57 4030016930 S CER C1005 JB 1A 104K T T 21 0 24 9 C58 4030016930 S CER C1005 JB 1A ...

Page 23: ... 4030017660 S CER C1005 CH 1H 330J T B 24 0 20 5 C100 4030017560 S CER C1005 CH 1H 2R5B T B 23 0 17 1 C101 4030017640 S CER C1005 CH 1H 150J T USA B 22 4 18 3 4030017640 S CER C1005 CH 1H 150J T EXP 4030017620 S CER C1005 CH 1H 100C T EUR 01 4030017620 S CER C1005 CH 1H 100C T EUR 4030017620 S CER C1005 CH 1H 100C T UK 4030017620 S CER C1005 CH 1H 100C T FRG 4030017620 S CER C1005 CH 1H 100C T HOL...

Page 24: ... 6 2 6 EP452 6910018460 S BEA MMZ1005Y102C T B 4 5 1 4 EP454 6910018460 S BEA MMZ1005Y102C T B 4 9 2 7 EP458 6910018460 S BEA MMZ1005Y102C T B 8 4 7 8 M Mounted side T Mounted on the Top side B Mounted on the Bottom side S Surface mount REF PARTS DESCRIPTION M H V NO NO LOCATION VR UNIT R801 7210003650 VAR F081 0028A SLVJ J416 6510029480 S CON 06FH SM1 TB LF SN B 4 1 2 0 W801 8910000070 FFC FFC 10...

Page 25: ...X6 SUS SSBC 4 MP30 8810008971 BT M2X3 5 NI ZC3 6 MP31 8810009511 PHBT M2X4 NI ZC3 3 6 4 0 3 MP32 8810009161 PHB0 M2X20 SUS SSBC 2 MP37 8930084870 3384 REAR SHEET 1 MP39 8930069620 2905 ANT PLATE Y846 1 MP40 8810006571 PH M2X2 ZC3 1 MP42 8930088220 SPONGE MJ 1 MP43 8930070630 O RING BK TOP 1 MP44 8930087790 3495 WHITE SHEET 1 MP45 8930088230 SPONGE MK 2 MP46 8930088590 SHIELD SPONGE DC 1 MAIN UNIT ...

Page 26: ... 1 Optional BC 123SV AUS 1 Optional BC 123SA USA 10 1 Optional BC 123SE EXP 10 1 Optional BC 123SE EUR 11 1 Optional BC 123SE EUR 10 1 Optional BC 123SE FRG 10 1 Optional BC 123SE HOL 10 1 Optional BC 123SV AUS 10 1 EP3 Optional BP 245H 1 EP4 Optional BC 210 1 EP5 6910018620 BLACK HANDY STRAP 1 EP6 Optional CP 25H USA 1 Optional CP 25H EXP 1 Optional CP 25H HOL 1 Optional CP 25H USA 10 1 Optional ...

Page 27: ...5 C MP52 R MP30 C MP7 C MP18 C MP11 C 2 MP12 C MP13 C MP30 C 5 MP45 C 2 MP1 C MP5 C MP42 C MP6 C MP19 C MP21 C MP23 C MP43 C MP1 MI W470 MI To J300 MAIN UNIT To J301 MAIN UNIT W801 V J416 MI MP22 C MP39 C MP46 C MP40 C J1 C MP20 C MP26 C MP17 C EP360 C 2 MP362 C 2 MAIN UNIT MP32 C Abbreviations C Chassis parts M MAIN UNIT R RF UNIT MI MIC UNIT V VR UNIT Location MP1 MI ...

Page 28: ...0 H85 V0 V5 V10 V15 V20 V25 V30 V35 V40 C7 C9 C11 C12 C13 C15 C18 C24 C44 C46 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 C74 C77 C78 C80 C81 C82 C83 C84 C85 C86 C89 C122 C125 C126 C131 C155 C220 C223 C225 C380 C381 C400 C401 C402 D3 D50 D51 D52 D91 D354 EP2 EP3 IC1 IC2 IC50 J101 L1 L26 L50 L51 L53 L55 L56 L57 L58 L80 Q3 Q50 Q53 Q54 Q100 Q222 Q35...

Page 29: ...212 R213 R214 R222 R223 R226 R227 R228 R230 R231 R232 R233 R234 R235 R236 R240 R241 R243 R244 R250 R251 R252 R253 R255 R256 R257 R258 R260 R261 R262 R263 R264 R265 R271 R272 R273 R274 R275 R276 R277 R278 R279 R280 R283 R284 R286 R288 R289 R290 R300 R340 R341 R343 R346 R351 R352 R353 R376 R377 R378 R379 R396 R397 R399 R401 R402 R430 R431 R433 R434 R435 R436 R437 R438 R439 R440 R441 R442 R449 R454 R...

Page 30: ...4215 Q151 2SC4215 D50 HVD144A D51 HVD144A Q50 KTC3770U Q53 Q54 Q351 LDTA144EE D52 1SV307 D90 HVD144A D353 DB2S31400 X480 IC341 NJU7704F3 Q225 KIA1664 Q224 KTC811U Q223 LDTC144EE IC340 S 24C64CI IC360 UPC78F0338GC DS480 L2 1365TVF DS240 DS241 LNJ426W83RA LDTC144EE RD01MUS2 RD07MUS2B X170 JTBM450CX70 IC170 GT3136 NOISV ETXDO ERXDI BUFF EXDET Q350 L2SC4081 D350 L1SS400 VOX VOXT EXPTT PTTIN PTTM VOXM ...

Page 31: ...14EA D131 1 5P C97 39P C110 2 5P C112 27P C114 L92 56N L96 56N L93 56N L97 56N L23 0 1U L24 0 1U L25 0 1U L20 82N L1 6 8U L21 2 7U L22 82N 18N L53 82N L26 FI150 FL 368 FI151 FL 363 L55 25N L56 6 8N L80 45 3N L81 24N L82 27 2N L90 45 3N L98 0 82U R4 47k R22 4 7k R6 1k R7 47k R24 100k R25 100k R23 1k R20 100 1k R11 10k R12 8 2k R13 R27 12k R29 470 R30 68k R33 39k R35 68k R5 10k R53 100 R54 10 R52 4 ...

Page 32: ...R548 LM2904PWR IC432 V 8 GND 4 4 7 C440 10k R160 C520 C523 C524 C525 C526 C527 C528 C529 C530 C531 C532 C533 C534 C535 C536 C537 C538 C539 C540 C541 R550 R554 R556 R557 R558 L10 L11 L12 X481 R560 IC502 1 VIN 2 VSS 3 CE 4 NC 5 VOUT IC504 1 2 3 4 5 6 7 8 R561 LM2904PWR IC432 6 5 7 LM2904PWR IC431 2 3 1 LM2904PWR IC431 6 5 7 LM2904PWR IC431 V 8 GND 4 100k R431 R570 R571 R572 R573 Q550 R553 R552 R551 ...

Page 33: ...00 3 P32 TI01 4 P33 TO50 TI50 5 P34 TO51 TI51 6 P20 RXD0 SI3 7 P21 TXD0 SO3 8 P22 SCK3 9 P23 SI1 10 P24 SO1 11 P25 SCK1 12 P00 INTP0 13 P01 INTP1 14 P02 INTP2 15 P03 INTP3 ADTRG 16 P04 INTP4 17 P05 INTP5 BUZ PCL 18 VPP 19 XT2 20 XT1 21 VSS1 22 VDD1 23 X2 24 X1 25 RESET 26 AVREF0 27 P10 ANI0 28 P11 ANI1 29 P12 ANI2 30 P13 ANI3 31 P14 ANI4 32 P15 ANI5 33 P16 ANI6 34 P17 ANI7 35 ANI8 36 ANI9 37 AVSS0...

Page 34: ...ne 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 64 09 274 4708 URL http www icom co nz E mail inquiries icom co nz 10C07 Long silver Mansio...

Page 35: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14919XZ C1 2013 Icom Inc ...

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