Icom IC-M32 Service Manual Download

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11 - 2

FCON
PCON

VCC1
IN1
ENB
CLK
DATA
T1
LOK
CP1
FI1
FO1

GND1

IN2

VCC2

GND2

CP2

FI2

FO2

OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN

MIXIN

GND

N-REC
N-DET

RSSI

IFOUT
QUAD

AFOUT

3
4

1
2
3
4
5
6
7
8

VIN1
VOUT1
VPUT2
VIN2
VDD
LD
CLK
DI
VIN3
VOUT3
VOUT4
VIN4

VIN8

VOUT8
VOUT7

VIN7
GND

RESET

VDAREF

VIN6

VOUT6
VOUT5

VIN5

1
2
3
4
5
6
7
8
9

10
11
12

24
23
22
21
20
19
18
17
16
15
14
13

16
15
14
13
12
11
10
9

5
6

8
9

18
17

20
19

16
15

13
12
11

V5V

C65
100 P

Q25
2SC4215 Y

2
3

CTRL
GND
NB

VIN

VOUT

MP20

VCO CIRCUIT

MODC

PCON

CP80

1
2
3

Q240

DTC144EUA

TEMPV

FCON

UNLK

PLST

SCK
SDATA

3 4 5

10 k

47 k

2nd Lo

MODC

FI170
CFWM450E

C181
0.1

C179
120 P

SQLO

VOLO

VOLIN

DAST

SCK

SDATA

DAST

SCK

SDATA

C180
120 P

DET

R172

470

R176
6.8 k

R173
1.5 k

C170
0.001

R174
220 k

C178

0.22

R175

47 k

R193

470

C194

0.01

C191

0.01

C177

0.1

C176
0.001

C175
0.001

220 P

47 k

R22
560

L21

2.7

L22

80 nH

C44

0.001

C32

1.5 P

C37

0.3 P

V5V

T5V

EP2

EP3

L57

22 nH

L56

8.5 nH

C72

0.001

C74

0.001

D52

1SV307

L58

2.7

ANT

C80

0.001

L81

30 nH

C84
11 P

C89

7 P

R80
82 k

R380

15 k

C87

0.5 P

R81
22 k

R382
2.7 k

D80

RB706F

D91

RB706F

L82

32 nH

L80

50 nH

R100
1

D50

MA77

R96
220

R65

150 k

PCON

C51
22 P

C54
15 P

T5V

C58

0.1

R67

100 k

R68
100

R69
15 k

VCC

TXMS

L51

82 nH

R5V

C39
12 P

C43
22 P

C42

5 P

1st Lo

C121
0.001

L120

82 nH

L121

56 nH

C142

12 P

C140

12 P

L133

80 nH

C138

13 P

C137

2 P

D130
MA77

V5V

R5V

R227

10 k

R385 1 k

VCC

R230

27 k

C134

1 P

C133

13 P

L130

82 nH

L122

4.7

L150

0.82

C131

12 P

C104

47 P

C102

12 P

L94

80 nH

C100

12 P

D92

MA77

C99
2 P

C97

1 P

C96
12 P

L91

82 nH

C94
12 P

C92
47 P

BPFS

T5V

C108

47 P

L95

0.1

C40
15 P

MOD

PCON

MODC

PCON

R24

100 k

R25

100 k

L20

82 nH

R8
1 k

R9
10

CP1

R170

390

R5V

NOISV

BEPST

RSSIV

C171

82 P

R5V

CR-766

C1
0.1

R1
47 k

100 k

0.01

D1
HVC376BTRF

18 P

0.01

C8
2 P

C9
2 P

6.8

C12

0.001

15 P

R6
1 k

0.001

R20
100

C20

0.001

C21

9 P

C10

0.047

X170

CDBC450CX24

C174
0.001

R171
1.2 k

C160

0.0056

R155
1.5 k

C153
0.001

C152
0.022

R151
3.3 k

C154
0.001

C150
0.001

R150

100

C143
0.001

R134

120

R133

10 k

C141

5 P

C139

33 P

L132

80 nH

R233
2.2 k

R235
330 k

DS240
FY1101F-TR

R240

100

R241

680

R242

680

DS244
SML-311YT

DS245
SML-311YT

DS241
FY1101F-TR

DS242
SML-311YT

DS243
SML-311YT

R130

10 k

L131

82 nH

C151

56 P

R10

2.2 k

C24

0.1

C25

0.001

C27
39 P

C28

0.001

C30

0.001

C11

2.2

C22

9 P

C26
47 P

R23

1 k

D20

MA2S077

D21

MA77

C31

0.001

R29
390

R30
68 k

C36

0.001

R31
680

R32
390

C50

0.001

R53
100

R52

4.7 k

C52

0.001

R55

3.3 k

C61
33

C62
0.001

C63
470 P

C67
470 P

L55
31 nH

MP50

R75
100

R71
100

C70
91 P

C75
22 P

C71
30 P

C82
18 P

C380
0.001

C81
18 P

C83
22 P

C85
24 P

C86

9 P

R82
10 k

C88

0.001

C68
47 P

C73

0.001

R76
150

R72
47

L53
18 nH

R384
2.2 k

C59

470 P

C60

0.001

R70
15 k

R383

12 k

R381

10 k

R73

1 k

R74
10 k

C66
0.01

C64

0.001

R54

L50

0.1

L24

0.1

L25

0.1

L23

0.1

C38

0.001

R34
470

C41

0.001

R35
68 k

C122

15 P

C132

33 P

C110
0.001

C109
470 P

C105
0.001

R94
33 k

R93

1 k

D93

MA728

C103

5 P

C101

33 P

L93

80 nH

R91

1 k

R90
10 k

L92

82 nH

C95
33 P

D353

MA728

C93

4 P

D90

1SV307

C115
0.001
[M31]

C91
10 P

C90

9 P

C240
0.001

R115

[M31]

C98

0.001

C130

5 P

C107

0.01

C106
470 P

R95
100

C123

10 P

R121

10 k

C120

0.01

R120
2.2 k

D51

MA77

R50

1 k

R56

1.2 k

C53

0.001

C55
24 P

C381
0.001

R66
47 k

C56
0.01

C57

0.1

R57

R386
10 k

R33
39 k

R26

8.2 k

C33

220 P

R28
180

R27

8.2 k

C34

1.5 P

D22
HVU350B

D23
HVU350B

C35
0.001

R36

1 k

C29

0.001

330

VCC

AFV

CP240

CP241

GND

L90

50 nH

T5V

TDETV

VCC

T5V

VCC

DET

NOISV

MOD

BEPST

RSSIV

DAST

SQLI
SQLO

BEEP

BEPST

SCK
SDATA

MCON
BEPO
BEEP

R192

390

C192

R194
100 k

C193

0.01

R131

1 k

BPFS

R222

10 k

R220

10 k

R224

10 k

R223
4.7 k

R221
4.7 k

R225
4.7 k

C226

0.01

CPU5V

AFV

CPU5V

R228

22 k

C159

0.01

C156
0.001

FI151

FL-363

FI150

21R15AB

R153
1.5 k

R152
1.5 k

BEEP

AFV

CPU5V

AFV

CPU5V

R156

470

C155

6 P

R154
100 k

C158
0.001

C157
0.022

C136
0.001

R132

10 k

C220

C221

0.01

C222

0.01

C223

0.01

T5VS

5VS

V5VS

R5VS

C224

R226
2.2 k

C225

0.22

C227

C228
0.001

C229
0.001

C230

R231

1 M

C231

R232

C232

0.1

R234
3.3 k

C233

0.01

R236
150 k

R245

1 k

BTYPE

TDETV

TXMS

BATTV

LEDS

AFVS

C135
0.001

CP245

Explanatory notes

+B LINE

TX LINE

RX LINE

AFV
B
C

BEEP

BEPO

AFV

VOLO

BEEP

BEPO

NOISV

BEPST

VOLIN

RSSIV

MOD

DET

B
C

CPU5V

IC190

M62363FP-650C

IC170

TA31136FN

Q53
RD01MUS1

Q351
DTA144EUA

Q54
RD07MVS1

IC50

NJM2125F

Q50
2SC4226 R25

Q21
2SC4226 R25

Q22
2SC4226 R25

Q23
2SC4215 Y

Q220
2SA1588 GR

Q221
2SA1588 GR

Q222
2SA1588 GR

Q223
DTC144EU

Q225
2SB1132 Q

IC220

NJM2870F05

Q224
XP6501 AB

Q90
2SC4226 R25

Q24
2SC4215 Y

Q20

DTC144EUA

Q151
2SC2714 Y

Q150
3SK299

IC1

PD3140GS

Q230

2SB1132 Q

Q231
XP6501 AB

MAIN UNIT

COMMON LINE

5W TX : 2.29V
1W TX : 0.65V

3.58V

RX : 3.57V

RX : 1.45V

RX : 4.20V

RX : 0.91V

RX 3.21V

RX : 0.79V

CH16 RX : 4.96V
CH88 RX : 0.00V

5W TX : 3.02V
1W TX : 2.33V

Power Save OFF : 5.00V

7.5 V

Back-Light ON :
3.82V

Back-Light ON :
3.91V

4.98V

AF Mute OFF :
7.48V

TX : 4.93V

RX : 4.96V

Power Save OFF : 4.96V

Summary of Contents for IC-M32

Page 1: ...VHF MARINE TRANSCEIVER iC m32 ...

Page 2: ...ssis 5 pieces Addresses are provided on the inside back cover for your con venience 1 Make sure a 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 components Turn them slowly and smoothly 4 DO NOT short any circuits or electronic parts An insulated turning tool MUST ...

Page 3: ... 4 3 4 4 POWER SUPPLY CIRCUITS 4 3 4 5 CPU PORT ALLOCATIONS 4 4 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 PLL AND TRANSMITTER ADJUSTMENTS 5 4 5 3 RECEIVER ADJUSTMENT 5 5 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY CHASIS PARTS 7 1 CHARGER PARTS BC 150 7 3 SECTION 8 SEMI CONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS SECTION 10 BLOCK DIAGRAM SECTION 11 VOLTAGE DIAGR...

Page 4: ...ation 5 0 kHz Spurious emissions 68 dB Adjacent channel power 70 dB Transmitter audio distortion Less than 10 at 1 kHz 60 deviation Residual modulation 40 dB Audio frequency response 1 dB to 3 dB of 6 dB octave from 300 Hz to 3000 Hz RECEIVER Receive system Double conversion superheterodyne system Intermediate frequencies 1st 21 7 MHz 2nd 450 kHz Sensitivity 0 25 µV at 12 dB SINAD Squelch sensitiv...

Page 5: ...7 400 156 025 156 075 156 075 156 125 156 125 156 175 156 175 156 225 156 225 156 275 156 275 156 325 156 325 156 375 156 425 156 475 Rx only 156 575 156 625 Receive 157 050 161 700 157 100 161 750 157 150 161 800 161 850 161 900 161 950 162 000 160 625 160 675 156 075 160 725 156 125 160 775 156 175 160 825 156 225 160 875 156 275 160 925 156 325 156 375 156 425 156 475 156 525 156 575 156 625 US...

Page 6: ... IF detector IC IC170 TA31136FN PLL IC IC1 µPD3140GS D A converter IC190 M62363FP 650C CPU IC360 M37560M8A 700GP EEPROM IC340 BR24L16FV Mic amplifier and low pass filter circuits IC200 NJM2902V Antenna switching circuit D52 MA77 Power amplifier Q54 RD07MVS1 APC IC50 NJM2125F IF amplifier Q151 2SC2714 Y TX RX switch D50 D51 MA77 ...

Page 7: ... and rubber from the front panel q Unscrew 1 nut D w Unscrew 2 screws E 2 6 mm e Take off the chassis unit in the direction of the arrow r Unplug F to separate the front panel J251 and the chassis unit t Remove 1 washer G NOTE A For IC M2A only B For IC M32 only Removing the MAIN unit q Unscrew 7 screws H 2 4 mm w Unsolder 3 points I and remove earth plate e Separate the MAIN unit and the chassis ...

Page 8: ... mixed with a 2nd LO signal for conversion into a 450 kHz 2nd IF signal IC170 contains the 2nd mixer limiter amplifier quadrature detector and active filter circuits A 21 25 MHz 2nd LO signal is produced at the PLL circuit using the reference frequency The 2nd IF signal from the 2nd mixer IC170 pin 3 passes through ceramic filters FI170 to remove unwanted hetero dyne frequencies It is then amplifi...

Page 9: ...l at the VCO circuit Q21 Q22 D22 D23 The oscillated signal is amplified at the buffer amplifiers Q23 Q24 4 2 3 DRIVE POWER AMPLIFIER CIRCUITS MAIN UNIT The signal from the VCO circuit passes through the trans mit receive switching circuit D50 D51 and is applied to the buffer amplifier Q50 The amplified signal is amplified by the pre driver Q53 and the power amplifier Q54 to obtain 5 W of RF power ...

Page 10: ...plied to the receive 1st mixer Q150 or transmit driver via the TX RX switching diode D50 D51 Shift register Prescaler Phase detector Loop filter Programmable counter Programmable divider X1 21 25 MHz 2nd LO signal 21 25 MHz to the FM IF IC IC170 Q21 Q22 D22 D23 VCO Buffer Buffer Buffer Q24 D50 D51 Q25 Q23 3 4 5 PLST IC1 PLL IC SCK SDATA to transmitter circuit to the 1st mixer circuit 17 16 13 19 P...

Page 11: ... detection Input port for the SCN key Low While the SCN key is pushed Input port for the H L key Low While the H L key is pushed Input port for the volume control sig nal Input port for the SQL key Low While the SQL key is pushed Pin number 43 44 45 46 47 48 49 50 51 52 53 54 55 Port name CH WX UP DOWN 16 AFMS BPFS V5VS T5VS R5VS AFVS MICM DETM VOL UP Description Input port for the CH WX key Low W...

Page 12: ...key and PTT switch and then turn power ON EQUIPMENT DC power supply RF power meter terminated type Frequency counter Digital multimeter GRADE AND RANGE Output voltage 7 5 V DC Current capacity 3 A or more Measuring range 0 1 10 W Frequency range 100 300 MHz Impedance 50 Ω SWR Less than 1 2 1 Frequency range 0 1 300 MHz Frequency accuracy 1 ppm or better Sensitivity 100 mV or better Input impedance...

Page 13: ...ck SINAD meter Speaker 8 OPC 782 Optional plug adapter cable NOTE If the tape on the back of the TOP PANEL has lost its adhesion replacement to a new one is necessary DETACHING ATTACHING THE TOP PANEL Detach the TOP PANEL with a sharp point such as tweezers for adjustment BE CAREFUL cracking the TOP PANEL After adjustment be sure to reattach the TOP PANEL to maintain the water resistance capabilit...

Page 14: ...erating frq 156 800 MHz Set an SSG as Frequency 156 800 MHz Level 3 2 µV 97 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving MAIN Top Panel Connect a digital multi meter or oscil loscope to the check point CP1 Connect an SSG to the antenna con nector and a SINAD meter with 8 Ω load to the SP jack 1 8 V 1 7 V 0 35 µV 116 dBm Verify Verify CP1 PLL lock voltage check point The output level of the sta...

Page 15: ...TION dE SQUELCH LEVEL nL Top Panel Top panel Top panel Top panel Loosely couple the frequency counter to the antenna connec tor Connect an RF power meter to the antenna connector Connect an FM deviation meter to the antenna connector through an attenuator Connect an SSG to the antenna connector and a SINAD meter with 8 Ω load to the SP jack 156 8000 MHz 5 0 W 0 8 W 0 45 W 4 3 kHz More than 12 dB S...

Page 16: ...200006980 S COIL ELJRE R10G F B L120 6200002430 S COIL NL 252018T 082J T L121 6200002410 S COIL NL 252018T 056J T L122 6200003550 S COIL MLF1608A 4R7K T B L130 6200007760 S COIL LQW2BHN82NJ01L B L131 6200007760 S COIL LQW2BHN82NJ01L B L132 6200008190 S COIL 0 25 1 9 8TL 80N B L133 6200008190 S COIL 0 25 1 9 8TL 80N B L150 6200003680 S COIL LQH31MNR82M01L B R1 7510001660 S THRMISTOR NTCG16 4LH 473K...

Page 17: ...3 V 47 kΩ B R340 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 kΩ B R341 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 kΩ B R343 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 kΩ B R345 7030003760 S RESISTOR ERJ3GEYJ 474 V 470 kΩ B R346 7030003200 S RESISTOR ERJ3GEYJ 100 V 10 Ω T R350 7030003760 S RESISTOR ERJ3GEYJ 474 V 470 kΩ B S Surface mount 6 2 REF ORDER DESCRIPTION M NO NO M Mounted side T Mounted on the Top ...

Page 18: ...K B C206 4030017460 S CERAMIC ECJ0EB1E102K B C207 4030016930 S CERAMIC ECJ0EB1A104K B C220 4510005430 S ELECTROLYTIC ECEV0JA220SR B C221 4030016790 S CERAMIC ECJ0EB1C103K T C222 4030016790 S CERAMIC ECJ0EB1C103K T C223 4030016790 S CERAMIC ECJ0EB1C103K T C224 4510005430 S ELECTROLYTIC ECEV0JA220SR B C225 4030011810 S CERAMIC C1608 JB 1A 224K T B C226 4030016790 S CERAMIC ECJ0EB1C103K T C227 455000...

Page 19: ...10014190 CONNECTOR 2497 ANT CONNECTOR SP1 2510001092 SPEAKER 036D0801B FG W1 8900010960 CABLE OPC 1129 M Mounted side T Mounted on the Top side B Mounted on the Bottom side S Surface mount 6 4 REF ORDER DESCRIPTION M NO NO ...

Page 20: ...erminal Y608 1 MP38 8810009510 Screw PH BT M2x4 NI ZU 1 MP39 8810009510 Screw PH BT M2x4 NI ZU 7 MP40 8510015970 2691 grounding plate 1 MP42 8810009560 Screw PH BT M2x6 ZK 2 MP43 8510015980 2691 main shield 1 MP44 8930024961 891terminal rubber A 1 3 MP46 8930060780 2691 PW button 1 MP47 8930060790 2691 PW holder 1 REF ORDER DESCRIPTION NO NO CHASSIS PARTS QTY J 250 6450001910 Connector HSJ1594 010...

Page 21: ... 32 0 3 1 32 136 5 11 32 UNIT abbreviations C CHASSIS PARTS M MAIN UNIT NOTE1 Once the following parts are removed a O ring or sealing must be replaced with new one before reattachement Mother part Daughter part for relayted replacement J31 C Antenna connector MP14 C Sealing washer MP24 C Screw MP25 C Sealing washer NOTE2 The glue must be applied to the areas when the front panel is replaced with ...

Page 22: ...MP4 8930047830 Leg cushion C 2 CHASSIS REF NO ORDER NO DESCRIPTION R1 7070001130 RESISTOR 120 ERG2SJ R2 7070001140 RESISTOR 150 ERG2SJ R3 7010007100 RESISTOR 1K PSD1 4V J1 6510023070 CONNECTOR HEC2305 01 250 DS1 5040001390 LED TLG124A EP1 0910054642 PCB B 5787B CHARGE UNIT MECHANICAL PARTS Screw abbreviations A0 B0 BT Self tapping NI ZU Nickel zinc SUS Stainless 16 4V No load 13 0V Charge 16 4V No...

Page 23: ...R AND FET S B E C B E C DTA144 EUA Symbol 16 B E C G1 G2 S D 2SA1588 GR Symbol ZG 2SB1132 Q Symbol BAQ 2SC2714 Y Symbol QY 2SC4213 B Symbol AB B E C B C E B E C B E C B E C B E C E1 E2 B2 C1 B1 C2 G S S S S G G D D D Bottom view DIODES MA77 Symbol 4B RB706F 40 T106 Symbol 3J 1SV307 Symbol TX HVU350 B Symbol B0 MA2S077 Symbol S 1SS375 Symbol FH MA728 Symbol 2A DA221 TL Symbol K HVC376B TRF Symbol B...

Page 24: ...N UNIT TOP VIEW DS246 16 SCN H L SQL CH WX VOL VOL LOCK MONI U I C DUAL TAG TAG 9 SP1 CLONE SPO AFOUT MIC GND Mic The combination of this page and the next page shows the unit layout in the same configuration as the actual P C Board ...

Page 25: ...9 2 BOTTOM VIEW CLONE SPO AFOUT MIC GND J250 ANT MIC MC250 The combination of this page and the previous page shows the unit layout in the same configuration as the actual P C Board ...

Page 26: ...5V REG R5 REG V5 REG T5 CPU 5V RESET CPU5V RESET ATIS EEPROM LCD KEY LED SW LED BTYPE HV GND EXT JACK J250 VCO Q150 3SK299 D91 RB706F MAIN UNIT CHASSIS REF OSC 21 250 MHz Q20 DTC144EUA D20 MA2S077 D21 MA77 IC50 NJM2125F Q351 DAT144EUA IC170 TA31136FN FI170 CFWM450E 450 kHz IC190 M62363FP DS246 L3 0018TAY 1 Q240 DTC144EUA IC340 BR24L16FV IC360 IC220 NJM2870F05 IC341 BD5242FVE Q223 DTC144EU Q224 XP6...

Page 27: ... 036D0801B 1 2 4 3 GND D350 DA221 R353 1 k CPU5V R351 1 k MICM MICM DET R253 2 2 k 5V R255 150 k R271 33 k R272 180 k C265 150 P R273 18 k R279 820 R276 180 k C263 0 01 R286 10 k AFOUT R284 10 R350 470 k CPU5V TEMPV R346 10 CPU5V CPU5V CPU5V R362 1 k R305 47 k R304 47 k X360 CSTCR7M98G53 RC CP360 TDEC WET WET R361 1 k R360 1 k R363 1 k R364 1 k SCK SDATA PLST DAST ESCK ESCK ESDA ESDA RESET BTYPE R...

Page 28: ...001 C30 0 001 C11 2 2 C22 9 P C26 47 P R23 1 k D20 MA2S077 D21 MA77 C31 0 001 R29 390 R30 68 k C36 0 001 R31 680 R32 390 C50 0 001 R53 100 R52 4 7 k C52 0 001 R55 3 3 k C61 33 C62 0 001 C63 470 P C67 470 P L55 31 nH MP50 R75 100 R71 100 C70 91 P C75 22 P C71 30 P C82 18 P C380 0 001 C81 18 P C83 22 P C85 24 P C86 9 P R82 10 k C88 0 001 C68 47 P C73 0 001 R76 150 R72 47 L53 18 nH R384 2 2 k C59 470...

Page 29: ......

Page 30: ...S 14008MZ C2 2003 Icom Inc 1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan ...

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