Icom IC-M34 Service Manual Download Page 25

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10 - 1

SECTION 10

BLOCK DIAGRAM

LPF

ANT

ANTENNA

PWR
AMP

DRIVE

PRE

BPF

RF
AMP

BP F

TX/RX

BUFF

BPF

APC

CTRL

BUFF

BPF

IF
AMP

FIL

LOOP

7.9872MHz

VCC

LPF

X170

450KHz

BPF

LIMI T

AM P

LPF

MUTE

AF
AMP

21.25MHz

AMP

VCC

BPF

POWER SW

MUTE

S5V

VCC

5VS

R5VS

V5VS

T5VS

S5VS

WDEC V

RSSI V

LOIN V

NOISV

WET

TEMPV

BATTV

BEEP

AFVS

AFMS

MICMS

DETMS

ETXDO

TXM S

TDETV

ERXDI

PTTIN

EXTPTT

BTYPE

PTTM

ATTS

LOW

PWSW

PON

21.7MHz

FI150:FL-412

Q151:

D131:

D 92:

PWR
DET

T5V

D80:

D 52,D90:

Q90:

Q53:

Q54:

D 50,D51:

Q50:

Q24:

Q23:

Q25:

Q 21,Q22:KTC3770U

IC1:MB15E03SLPFV1

PLL

PWR
DET

MUTE SW

T5V

MOD
MUTE

R5V

DE -
ENPHA

REG

PRE
ENPHA

IF DET IC

D/ A

SPO

AF OUT

CLONE

MIC

GND

BUFF

PTT
CONT

REG
5V

REG
R5

REG
V5

REG
T5

CPU
5V

RESET

CPU5V

RESET

EEPROM

LCD

KE Y

LED
SW

LED

BTYPE

GND

EXT JACK

J250

VCO

Q150:

D 91:

MAIN UNIT

CHASSIS

REF

Q20:KRC404E

IC50:

Q351:

IC170:

FI170:

450KH z

IC190:

DS246:

Q240:

IC340:

IC360:

CPU

IC220:

IC341:

Q223:KRC404E

Q221:

Q220:

Q222:

R5V

V5V

T5V

Q280:

IC280:

Q230:KTA1664

IC-200A:

IC200D:

IC200B:

IC200C:

Q350:KRC414E

Q250:

W XDECV

VOLI N

VOL

BEEPO

SQLO

SQLI

FCON

MODC

PTT

CLOUT

TXM S

RSSI V

NOISV

PCON

MODC

PLLO

2ND LO

DET

FCON

S-24CS64A0I-T8T1-G

KRC404E

DS240,DS241:
RY-SP110UTY24
DS242,DS243,DS244,DS245:
SML-311Y T

S11000

X360
CR-834

UPD780338GC

KTA2015

Q224:KTC811U
Q225:KTA1664

S-80942CNMC

NJM2870

LM2902PWR

KRA302E

[PTT]

MICROPHONE

KTC2875

TA7368F

Q231:XP6501

BTYPE

D350:KDS122

JTBM450CX24

JTM450FW

TA31136FN

M62364FP

KTC3880S

FI151:FL-412

3SK293

3SK294

D 93:

NJM2125F

RB706F

KRA304E

RB706F

1SV307

RD07MVS1

RD01MUS1

KTC3770U

MA7 7

2SC4215

D 20:MA2S077
D 21:MA2S077

D22,D23:HVC350B

CR-766

COMMON LINE

RX LINE

TX LINE

D130:

KDV214E

T1CON

REG
S5

Q226:
KTA2015

S5V

LM2902PWR

INMI C

EXTMI C

Q251:

CONT

KRA302E

PTT

EXTPTT

CONTROL LIN E

T1CON

PCON

TDETV

D/A contorl BUS

PLL DATA BUS

CLIN

AFVS

AFMS

CD4066PW R

IC260D:

DETM

MOD

CD4066PW R

IC260A:

PTTM

MICM

CD4066PW R

IC260C:

A TIS

BEEPO

REG

IC2:
S-812C36AMC

KDV214E

LEDS

PWR

ATTS

CTRL

PWR
CTRL

PWSW

PON

RSQ035P03TR

Q353:

Q355:KRC404E

Q356:KRA304E

Q354:KRC404E

M34 A3.indd 14-15

12/27/2006 7:08:43 PM

Summary of Contents for IC-M34

Page 1: ...S 14313XZ C1 Dec 2006 VHF MARINE TRANSCEVER iC m34 ...

Page 2: ...6FNG IC M34 MAIN UNIT 5 pieces 8820001210 Screw 2438 screw IC M34 Top cover 10 pieces Addresses are provided on the inside back cover for your convenience Icom Icom Inc and 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 a problem is internal before disassembling the tran...

Page 3: ...UITS 4 3 4 6 CPU PORT ALLOCATIONS 4 4 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 SOFTWARE ADJUSTMENT FREQUENCY 5 2 5 3 SOFTWARE TRANSMIT AND RECEIVE 5 3 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTION 8 SEMICONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS SECTION 10 BLOCK DIAGRAM SECTION 11 VOLTAGE DIAGRAM 11 1 MAIN UNIT Left side 11 1 11 2 MAIN UNIT Right side 11...

Page 4: ...cy deviation 5 kHz Frequency stability 10 ppm Spurious emissions 68 dBc typ Adjacent channel power 70 dB Audio harmonic distortion 10 at 60 deviation Residual modulation 40 dB Audio frequency response 1 dB to 3 dB of 6 dB oct from 300 Hz to 3000 Hz Microphone impedance 2 kΩ M RECEIVER Receive system Double conversion superheterodyne system Intermediate frequencies 1st IF 21 7 MHz 2nd IF 450 kHz Se...

Page 5: ...1 6 5 1 A 2 6 5 7 7 0 6 1 5 7 1 6 5 1 3 6 5 7 1 6 5 1 5 7 1 6 5 1 A 3 6 5 2 8 0 6 1 5 2 2 6 5 1 4 6 4 6 5 2 2 6 5 1 5 2 2 6 5 1 A 4 6 A 4 6 5 7 8 0 6 1 5 7 2 6 5 1 5 6 5 7 2 6 5 1 5 7 2 6 5 1 A 5 6 A 5 6 A 5 6 5 2 9 0 6 1 5 2 3 6 5 1 6 6 A 6 6 A 6 6 1 5 2 3 6 5 1 5 2 3 6 5 1 A 6 6 7 6 2 5 7 3 6 5 1 5 7 3 6 5 1 7 6 7 6 0 5 0 7 5 1 0 5 0 7 5 1 A 1 2 A 1 2 A S U 0 5 6 1 6 1 0 5 0 7 5 1 1 2 1 2 N A C ...

Page 6: ...25F TX POWER AMPLIFIER Q54 RD07MVS1 1ST IF FILTERS FIL150 FIL151 FL 412 IF IC IC170 TA31136FNG CERAMIC DISCRIMINATOR X170 JTBM450CX24 D A CONVERTER IC190 M62364FP AF LPF AF AMPLIFIER IC200 LM2902PWR CPU IC360 uPD780338GC TCXO X1 CR 766 EEPROM IC340 S 24CS64A0I PLL IC IC1 MB15E03SLPFV VCO MAIN UNIT TOP VIEW MAIN UNIT BOTTOM VIEW ...

Page 7: ...w Unsolder 1 point C The core of the antenna connector e Unscrew 7 screws D and remove the chassis from the MAIN UNIT 2 Removing the Chassis q Unscrew the antenna nut w Disconnect the speaker cable from the MAIN UNIT e Take off the chassis from the front panel inthe direction of the arrow Front panel Rear panel A A Front panel MAIN UNIT Antenna nut Speaker cable CHASSIS D 7 C B Bottom side ...

Page 8: ...e 1st IF circuits is applied to the 2nd IF mixer in the FM IF IC IC170 pin 16 and converted into the 2nd IF signal by being mixed with the 21 25 MHz 2nd LO signal from the reference oscillator IC1 X1 via LPF L1 C8 C9 C12 The converted 2nd IF signal is output from pin 3 and passed through the 2nd IF filter FI170 to suppress sideband noise The filtered 2nd IF signal is applied to the limiter amplifi...

Page 9: ...imiter amplifier IC200 pins 13 14 which limits the amplitude of the MIC signals to prevent over deviation The amplitude limited MIC signals are then passed through the splatter filter IC200 pins 1 3 which suppresses the 3 kHz and higher audio components The filtered MIC signals are applied to the modulation circuit D20 4 2 2 MODULATION CIRCUIT The modulation circuit modulates the VCO oscillating s...

Page 10: ... voltage is applied to the variable capacitors D22 D23 of the VCO Q21 Q22 D21 D23 and locked to keep the VCO frequency constant If the oscillated signal drifts its phase changes from that of the reference frequency causing a lock voltage change to compensate for the drift in the VCO oscillating frequency DATA interface Prescaler Phase detector Loop filter Reference counter Programmable counter Cha...

Page 11: ...UT 88 LOW TX power control signal High While the TX power is low OUT 89 R5VS R5V power line control signal High While receiving OUT 90 T5VS T5V power line control signal High While transmitting OUT 97 TXMS Transmit mute signal OUT 98 DETMS AF mute signal to the D A converter 99 ATTS Attenuator control signal High While the attenutor function is activated OUT 102 EXPTT Input port for external PTT s...

Page 12: ...U S A and other countries STARTING SOFTWARE ADJUSTMENT 1 Connect IC M34 and a PC with OPC 478 UC OPC 1668 and JIG CABLE 2 Turn the transceiver ON 3 Boot up Windows and click the program group CS M34 ADJ in the Programs folder of the Start menu then CS M34 ADJ s window appears 4 Click Adjust on the CS M34 s window then IC M34 s up to date condition appears 5 Set or modify adjustment value as specif...

Page 13: ...eter 0 1 10 W 50 Ω Frequency counter Standard signal generator 0 1 µV to 32 mV 127 dBm to 17 dBm DO NOT transmit while an SSG is connected to the antenna connector To CLONE line BLUE To SP line RED OPC 478 U UC WHITE MIC MIC line SP line BLUE CLONE SHIELD GND CLONE line To the transceiver RED AFOUT To audio generator AC millivoltmeter To SINAD meter speaker JIG cable PTT 33 kΩ JIG cable To the MIC...

Page 14: ...justment condition w Reference frequency e Transmit output power r FM deviation t Microphone sensitivity y Receive sensitivity u Squelch level q w e r t u y I O check button DO NOT put the cursor on these items and push the ENTER key Otherwise these items will not be adjusted properly ADJUSTMENT SOFTWARE SCREEN ...

Page 15: ...ng 1 25 2 25 V Verify REFERENCE FREQUENCY Ref Freq 1 Operating CH 16 RF power Low Connect an RF power meter to the ant enna connector Transmitting Loosely couple a frequency counter to the antenna conector 156 8000 MHz 5 2 SOFTWARE ADJUSTMENT FREQUENCY Select an adjustment item using keys then set to the specified value using keys on the connected PC s keyboard NOTE The above screen is an example ...

Page 16: ...TWARE ADJUSTMENT TRANSMIT and RECEIVE Select an adjustment item using keys then set to the specified value using keys on the connected PC s keyboard The output level of the standard signal generator SSG is indicated as the SSG s open circuit ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE TRANSMIT OUTPUT POWER RF Power High NOTE DO NOT put the cursor on RF POWER E Low then push the ENTER key Other...

Page 17: ... 0 30 1 7 7TL 45 3N B 104 8 8 1 L92 6200007750 S COL LQW2BHN56NJ03L B 102 9 16 3 L93 6200007750 S COL LQW2BHN56NJ03L B 100 16 1 L96 6200007750 S COL LQW2BHN56NJ03L B 90 9 20 9 L97 6200007750 S COL LQW2BHN56NJ03L B 86 5 15 6 L98 6200003680 S COL LQH31MNR82M03L B 80 1 19 7 R1 7510001661 S TMR NTCG16 4LH 473JT B 40 1 18 2 R2 7030003940 S RES ERJ3GEYF 104 V 100 k B 37 4 18 2 R3 7030005050 S RES ERJ2GE...

Page 18: ...2 1 R376 7030005090 S RES ERJ2GEJ 104 X 100 k B 49 3 34 9 R377 7030005080 S RES ERJ2GEJ 823 X 82 k B 52 8 34 9 R378 7030005080 S RES ERJ2GEJ 823 X 82 k B 55 2 34 9 R379 7030005080 S RES ERJ2GEJ 823 X 82 k B 56 5 37 R380 7030003580 S RES ERJ3GEYJ 153 V 15 k T 105 15 2 R381 7030005050 S RES ERJ2GEJ 103 X 10 k T 102 4 20 R382 7030009140 S RES ERJ2GEJ 272 X 2 7 k T 104 20 2 R383 7030008010 S RES ERJ2G...

Page 19: ...7 8 42 9 C257 4030016790 S CER ECJ0EB1C103K B 50 8 42 9 C260 4510008540 S ELE EEE1CA100SR B 72 8 28 C261 4030016930 S CER ECJ0EB1A104K B 46 3 40 4 C262 4030016790 S CER ECJ0EB1C103K B 43 8 35 5 C263 4030016790 S CER ECJ0EB1C103K B 58 9 38 3 C264 4030018240 S CER ECJ0EB1E562K B 60 4 40 C265 4030017690 S CER ECJ0EC1H121J B 57 5 40 9 C266 4030017030 S CER ECJ0EB1A273K B 58 6 44 1 C280 4030018900 S CE...

Page 20: ...0950 2987 MAIN SEAL 1 MP23 8810010121 Screw PH B0 2X8 SUS SSBC 2 MP24 8820001320 2795 SCREW 2 MP25 8930063690 O RING BA 2 MP31 8010020660 2987 CHASSIS 1 MP32 8930071320 2987 TERMINAL HOLDER 1 MP33 8810009561 Screw BT B0 2X6 NI ZK3 BT 4 MP34 8930060770 2691 A TERMINAL 1 MP35 8930056900 2497 B TERMINAL 1 MP37 8930056910 2497 C TERMINAL 1 MP39 8810009511 Screw BT B0 2X4 NI ZC3 BT 7 MP42 8810009561 Sc...

Page 21: ... C M P 3 7 C MP39 C MP42 C J31 C MP14 C MP31 C MP32 C MP1 C MP18 C C CHASSIS PARTS M MAIN UNIT PARTS A ACCESSORIES MP4 C MP361 M DS246 M EP360 M MP360 M MP17 C MP16 C MP15 C MP50 C MP21 C MP23 C EP4 A MP24 C MP25 C MP25 C MP24 C MP48 C MP22 C MP2 C MP19 C MP8 C MP9 C ...

Page 22: ... V RD01MUS1 Marking K2 RD07MVS1 Marking RD07MVS1 RSQ035P03TR Marking TM TRANSISTERS 1SV307 Marking TX 1SV308 Marking TX HVC350BTRF Marking B0 HVC376BTRF Marking XX KDS122 Marking C3 KDS160E Marking UF KDV214E Marking UO MA2S077 Marking S MA2S728 Marking B MA77 Marking 4B RB706F Marking 3J DIODES G1 G2 S D G S D G S D D D G D D S B E C B E C B E C B E C B C E B E C B E C B E C B E C E1 E2 B2 C1 B1 ...

Page 23: ...0 3 5 Q Q54 1 5 1 Q 0 2 2 Q 1 2 2 Q Q222 6 2 2 Q 0 3 2 Q 1 3 2 Q Q280 1 5 3 Q 3 5 3 Q Q354 Q355 6 5 3 Q Q357 8 5 3 Q R36 R50 2 5 R 3 5 R R54 R55 6 5 R 7 5 R 5 6 R R66 R67 8 6 R 9 6 R 0 7 R R71 2 7 R 3 7 R 4 7 R 5 7 R R76 R81 2 8 R R100 0 2 1 R 3 5 1 R R154 R155 6 5 1 R 0 7 1 R 0 2 2 R R221 2 2 2 R R223 R224 5 2 2 R 0 3 2 R R231 R232 R233 R234 R237 R245 6 4 2 R R247 R281 R282 3 8 2 R 6 8 2 R R288 9...

Page 24: ... Q251 0 5 3 Q Q352 0 6 3 Q 2 R 1 R R3 R4 5 R R6 7 R R8 0 1 R 1 1 R R12 R13 R20 R22 R23 4 2 R R25 6 2 R 8 2 R 7 2 R R29 0 3 R 1 3 R R32 R33 R34 R35 R37 R38 R39 0 4 R R41 2 4 R R43 4 4 R R45 R46 R47 R80 5 8 R 0 9 R R91 R93 R94 R95 R96 R97 R103 4 0 1 R R105 R107 8 0 1 R R109 0 1 1 R R111 2 1 1 R R113 R115 6 1 1 R R121 2 2 1 R R152 R171 2 7 1 R R173 4 7 1 R 5 7 1 R 6 7 1 R 2 9 1 R R193 R194 1 0 2 R 2 ...

Page 25: ...04E Q221 Q220 Q222 5V R5V V5V T5V Q280 IC280 Q230 KTA1664 IC 200A IC200D IC200B IC200C Q350 KRC414E Q250 WXDECV VOLIN VOLO BEEPO SQLO SQLI FCON MODC PTT CLOUT TXMS RSSIV NOISV PCON MODC PLLO 2ND LO DET FCON S 24CS64A0I T8T1 G KRC404E DS240 DS241 RY SP110UTY24 DS242 DS243 DS244 DS245 SML 311Y T S11000 X360 CR 834 UPD780338GC SP KTA2015 KTA2015 KTA2015 Q224 KTC811U Q225 KTA1664 S 80942CNMC NJM2870 L...

Page 26: ... ANI2 30 P13 ANI3 31 P14 ANI4 32 P15 ANI5 33 P16 ANI6 34 P17 ANI7 35 ANI8 36 ANI9 37 AVSS0 38 P120 AO0 39 AVREF1 40 CAPH 41 CAPL 42 VLCDC 43 VLC0 44 VLC1 45 VLC2 46 COM0 47 COM1 48 COM2 49 COM3 50 SCOM0 51 S0 52 S1 53 S2 54 S3 55 S4 56 S5 57 S6 58 S7 59 S8 60 S9 61 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...

Page 27: ...RC404E Q354 36P C26 L98 0 82U 3P C97 R22 5 6K 220P C33 MP50 2795 56P C119 8 2K R13 0 R403 820 R104 R70 15K 0 001 C132 15P C5 0 1 C57 0 001 C25 R73 1K 22K R44 CP300 CP10S 11P C84 22K R42 15P C54 2P C98 2 2K R384 0 01 C222 47P C92 470P C59 C131 R170 390 0 01 C7 KDV214E D131 R3 5 68K 0 0056 C160 FI150 R65 150 K 3SK293 Q150 0 001 C60 1 5P C34 R222 10K 10P C91 10K R398 12P C39 C155 L50 0 1U 0 R112 330P...

Page 28: ... D1 1750001400 S DIO RB461F T106 B 13 4 6 D2 1730002710 S ZEN UDZSTE 17 11B B 50 6 3 9 D3 1750001400 S DIO RB461F T106 B 20 9 28 8 D5 1750000550 S DIO 1SS355 TE 17 B 12 1 12 8 D6 1750000550 S DIO 1SS355 TE 17 B 48 25 3 R1 7030002110 S RES MCR03EZHJ 470 471 B 29 4 1 R2 7030000020 S RES MCR10EZHJ 1 010 B 21 7 23 1 R3 7030002220 S RES MCR03EZHJ 3 3 k B 13 1 10 1 R4 7030002240 S RES MCR03EZHJ 4 7 k B ...

Page 29: ...ICOMAMERICA COM USTOMER 3ERVICE 0HONE LENWOOD ENTRE IGHWAY ELTA 6 ANADA 0HONE AX 52 HTTP WWW ICOMCANADA COM MAIL INFO ICOMCANADA COM 5NIT ARDEN 2OAD LAYTON 6 USTRALIA 0HONE AX 52 HTTP WWW ICOM NET AU MAIL SALES ICOM NET AU ARRIS 2OAD AST 4AMAKI UCKLAND EW EALAND 0HONE AX 52 HTTP WWW ICOM CO NZ MAIL INQUIRIES ICOM CO NZ 2OOM TH LOOR ONG 3ILVER ANSION O 9ONG ING 2OAD AIDIAN ISTRICT EIJING HINA 0HONE...

Page 30: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14313XZ C1 2006 Icom Inc ...

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