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Icom IC-F620, Service Manual

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Icom IC-F620 Service Manual Download Page 33

MAIN
UNIT
(2)

J1

to
MIC

to
Optional
unit

JACK

J2

GND

PWR

LINH

LCS

LCK

LSO

AFVI

CLI

GND

MIC

8V

5V

KR0

KR1

KR2

FSW

HORN

CLO

PTT

AFO

8V
CL0
AFO
PTT

FRONT UNIT

J2

J1

PTTI

PTTO

MCOT

MCIN

AUX

BUSY

MDWN

SIG

OPT1

OPT2

OPT3

GND

OPV3

OPV2

OPV1

GND

5V

VCC

MMUT

AFON

BEPO

RMUT

DET

DISC

REM

CCS

CIRQ

SO

SI

SCK

BUS LINE1

R138        47k

R139        47k

R140        47k

8V
5V

R178        330k

R177        330k

R176        330k

R175        1M

R174        1M

R173        1M

R141

100k

R142

100k

C237 47p

C

APST

SI

AMSK

SO

AFCL

CCS

OPT3

OPT2

DISC

OPT1

DET

SIGOUT

RMUT

BEPO
BUSY

AFONO

MMUT

MCIN

MCOT

PTTO

AFO

MIC

PTT

GND

CLO

CLI

HORN

AFVI

FSW

LSO

VCC

GND

MDI

GND

XCTS

RES

XRXD

XRTS

5V

XTXD

PGO2

GND

PGI3

PGO1

PGI1

PGI2

INRXD

IGSW

8V

NTXD

KR2

LCK

KR1

LCS

KR0

LINH

5V

PWR

8V

GND

BUS LINE2

R296

1k

R295

1k

R293

1k

R294

1k

C207

0.1

R316
100k

HANG

MICI
AFO

R284
1k

R144

100k

C219        47p

C228        47p

C227        47p

C220        47p

C217        47p

C229        47p

C199        47p

C231        47p

C224        47p

C206        47p

C353        47p

C204        47p

C235        47p

C354        470p

C214        47p

C209        47p

R145

100k

POSW

LINH

LCS

LSCK

KR0
KR1
KR2

FSW

LSO

AFVI

CLI

HANG

HORNO

CLO

1
3

5

2

4

C367

47p

R108
22k

R307
22k

BAL

VAG

R306

100

C366
0.1

C162

0.001

IC11
TC75S51F

R305
220k

C372
2.2

REF C378

0.001

R107
47k

D21

HVC362

C161
100p

C160

9p

X2
CR-671A

R106

82k

R110

47

Q19
2SC4215

R105

47k

D20

MA2S111

C157

100p

C158

100p

R104

1.2k

R209
NTCG20

C203

0.1

R210

100k

TEMP

1
2
3
4
5
6
7
8
9
10

11

12

13

14

15

16

17

18

19

20

LOOK

TEST

VDD
GND

RFIN+

RFIN-

GNDCP

PHP

PHI

GNDCP

PHA

AUXIN

VDDCP

RSET

REFIN-

REFIN+

CLOCK

DATA

STROBE

PON

IC4
SA7026DH

C136 0.001

R88 15k

R102 15k

R109
1k

C144 0.01

C155 0.1

C152 47p

C153 47p

C154 47p

UNLK
PLST
SO

C156
47p

C159

0.1

L29

1.8

µ

C140
0.1

C314

0.01

C300

0.001

LVIN

R101

1k

C143

0.001

Q18
2SK880

R100

47k

C141

0.001

CP1

R99
1k

R92
120k

R91 22k[L]

47k[M],[H]

C132

0.001

R89
10k

C147

0.33

C130

100p

R96

4.7k

R97
10

R95
470

C146

0.047

C358

47p

R90
100k

MOD

R291

100k

C350

1

R292

8V
5V
VCC

8.2k

C145
47p

8V
5V

D19

MA2S111

C148

10

R98

2.2k

Q17
2SC4116

R93

47

R94

47

L27
1.8

µ

C125

7p

C133

10p

D16

HVC350B

C124

6p[L]

2p[M],[H]

C127

3.5p[L]

L25

11n

C123

12p[L]
8p[M],[H]

C121

10p[L],[H]

8p[M]

C122

6p[L],[H]

5p[M]

R82
4.7

R84
3.3k

R83
3.3k

Q13
2SC4226

L24

1.8

µ

C119

0.001

C120

47p

C139

0.1

EP1

L28
1.8

µ

C128

7p

C134

6p

D17

HVC350B

L26

11n

C126

6p

C114

8p

C115

6p

R81
10

R85
3.3k

R79
3.3k

L23

1.8

µ

C117

470p

C116

0.001

R78
560

R80
1k

C129

0.5p

C299

7p[L]

6p[M],[H]

C298

7p[L]

6p[M],[H]

L32
18n[L]
15n[M],[H]

D18

MA368

Q15
XP1214

5

4

1

2

3

C118
0.5p

C113
0.5p

R77

10k

C387

0.1

Q16
DTC144EU

C111

47p

C110

470p

R76

220

C104

0.001

R74

100k[L],[M]-45W

68k[M]-25W,[H]

R72

470

Q11
2SC5107

R73

220

L22

27n

Q12
2SC5107

R75

150k

C105

0.001

C103
2p

C102
12p

R71
33

C301

470p

R234

47k

Q10
2SC5107

R70

100

L21

27n[L]

22n[M],[H]

C109

0.001

C100
5p

D14
MA77

C108
0.01

R68

1k

R67

10k

C98

2p[25W]
5p[45W]

R66

100k

C99

0.001

Q9
2SC5107

R65

220[25W]

150[45W]

C107

0.001

L20

27n[L]

22n[M],[H]

C101

0.001

C93
4p[25W]
3.5p[45W]

C400
0.5p

C96

0.001

C97

47p

L19

18n[L]

15n[M],[H]

R61

56[25W]

150[45W]

Q8
2SC3356

C106

47p

C376

0.001

C92
5p

R309

330[25W]

820[45W]

R310
18[25W]
5.6[45W]

R311

330[25W]

820[45W]

C90

7p[L]

6p[M],[H]

C89

7p[L]

6p[M],[H]

L18
18n[L]
15n[M],[H]

IN

VCC1

VCC2

OUT

6

5

4

3

2

1

C138 0.001

IC3
RA30H4047M[L]
RA30H4452M[M]-25W,[H]
RA45H4452M[M]-45W

C368

2.2

C87

0.001

C86

47p

C83

3p[25W]

C355

4p[45W]

C356

7p[45W]

C401

22p

C84

47p

C85

0.001

C91

33[L]

22[M],[H]

L16
LA-232[25W]
LA-382[45W]

C82

4p[25W]

FI4
NFM60R-
20T152

FI5
NFM60R-
20T152
[45W]

FI3
NFM60R-
20T152

C380

0.001

C379

22p

C381

22p

C382

0.001

L37

0.1

µ

R9

220

R8

220

L5

LW-25

C12

470p

C375

0.001

C13

47p

D2
UM9401F[25W]

D3
XB15A407[45W]

L4

15n

C15

8p

T8V

C365

5p

R69

4.7k

D15
MA77

R50

10k

R235

1k

C303

0.001

C302

10p

R8V
ANT

C304
10p

Q34
2SC4116

R237

680k

L35

0.22

µ

R236

1.2k

C309

0.01

C305

56p

C306
4p

C307

7p

L33

0.82

µ

R62

12k[25W]

22k[45W]

C374

5p

C95

0.001

C94

47p

C383

22p

C384

22p

TXC

T8V

T8V
R8V

R8V

5V

5V

HV

C385

0.001

C396

22p

C397

220p

C398

0.001

C393

22p

C394

220p

C395

0.001

C390

22p

C391

220p

C392

0.001

1
2
3
4
5
6
7
8

9

10

11

12

13

14

15

16

OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN

MIXIN

GND

N-REC
N-DET

RSSI

IFOUT
QUAD

AFOUT

IC1
TA31136FN

R44
47k

C70

220p

C71

0.1

C69

220p

C371
0.01

R308

330

R45
33k

R46

1.5k

R47

3.3k

O

I

FI2
ALFYM450F=K

C308

3p

5V

T8V

R39

47

C67

0.001

C75

10

SQIN

R38

100k

NOIS

R36

3.9k

X1

CDBC450CX24

C61
100p

C62
82p

C348

0.001

C65

0.001

RSSI

C64

470p

C66

0.001

Q5

Q51
2SC4116[45W]

2SC4116

R41

47k

R42
47k

C72

0.1

Q6
DTA144EU

C9

6p

C8

2p

C7

7p[L]

6p[M],[H]

C6

3p

C16
2p[L]
1p[M],[H]

C14
47p[25W]

C357
47p[45W]

L3
LA-382

L2
LA-232

C5

0.001

C4

6p

R3

47[25W]

150[45W]

C3

0.001

C2

7p

C1

7p

L1
LA-232[25W]
LA-382[45W]

R1

100k

R7

100[25W]

150[45W]

R6

100

D11

MA728

R4

100

D1

MA728

R5

100

C11

0.001

C10

0.001

R35

1k

R8V

T8V

R8V

R290

470

C60

0.001

R34

120k

C58
0.001

R33
150

R32
100

Q4
2SC4215

FI1
FL-313 [USA], [GEN]
FL-335 [EUR]

C56

22p

L13

0.27

µ

C52

47p

R31

100

R30

1k

R29

120

C50

0.001

C48

22p

C54

0.001

C51

0.001

C53

0.01

Q3
3SK272

R25

4.7k

C45

8p[L]

10p

[M],[H]

D10

HVC350B

C44

3.5p[L]

2.5p

[M],[H]

L11

12n[L]

10n

[M],[H]

R23

220k

R24
10k

C47

0.001

C46

0.001

L38
18n

C49
5p

L12

33n

C364

7p

C363

7p

C38

0.001

R289

100

C369

47p

C37

0.001

R20

1k

L9

12n[L]

10n

[M],[H]

C36

3p[L]

2p[M],[H]

T4

C39

8p[L]

10p

[M],[H]

D9

HVC350B

R21

220k

C42

0.001

R22
10k

C43

0.001

T3

R17

1

Q2
3SK293

C32

0.001

C370

47p

R16

150

R15

82k

L8

12n[L]

10n

[M],[H]

C35

0.001

R19

220k

R18

10k

R208

4.7

C59

0.1

C34

0.001

R10

1.8k

Q1
2SK1829

C30
5p

C29

3p[L]

1p[M],[H]

C28

0.001

R14
10k

C27

0.001

R13

220k

D4

HVC350B

C26

8p[L]

10p

[M],[H]

T2

RSSI

R206
470k

R207

220k

D25

MA2S111

C22
0.75p

L7

15n[L]

10n

[M],[H]

C21

1.5p[L]

0.75p

[M],[H]

C23

0.001

R12
10k

C24

0.001

R11

220k

D8

HVC350B

C20

5p[L]

10p

[M],[H]

T1

L31

47n

C18

4p[L]

3p[M],[H]

D6

MA77

D5

MA4PH224

C17

10p[25W]

9p[45W]

C19 0.001

L6
15n

C81

0.001

R58
47[L]
100[M],[H]

C77

0.001

R53

100

C76

0.01

4

2

3
1

5

R56
150k

C79
0.22[L]
0.1[M],[H]

D32
MA2S111

C388

1

C403

0.001

[45W]

R325

PTH9C32

[45W]

IC2
TC75S51F

C80

0.047[L]

0.1

[M],[H]

R59 10k[25W]

12k

[45W]

R52

10k

D33

MA2S111

T4

R57
10k

C78
0.001

R54
10k

C33
47p

TMUT

R55
2.2k[L]
1k[M],[H]

R323
100k
[45W]

C313

47p

R2
100

R43
470

REM

DET

NWC

NWC

VCC

VCC

C236 47p

C247 0.001

C239 0.001

C238 0.001

C215 47p

J9

J8

XTXD

XRXD

XRTS

XCTS

RES

MD1

R155
100k

NTXD
NRXD

R151

100k

R152

100k

Q44
DTC144EU

IGSW

D36
DAN222

PGI1

D35
DAN222

PGI2

R153

100k

PGI3

R158        10k
R157        10k

PGO1
PGO2

SCK

SCK

CIRQ

D34

MA2S111

R232

56

C142

0.001

C74

0.1

C41
22p

C40
0.75p

EP2

R86
220k

MICE
MIC
GND
CLI

MAIN UNIT (1)

C205        47p

R143
100k

R154
100k

Q42
DTC144EU

D37
DAN222

C137

0.001

C150
47p

C297

4p[L]

12p[M],[H]

Q14
2SC4226

R40
1.5k

C63

0.001

R37

3.3k [N/W]

4.7k [N/M]

C25
2.5p

C389

33[L]

22[M],[H]

T8V

R8V

5V

R324

47k

LOCK:5.0V
UNLK:0V

1.2Vp-p
(15.3MHz)

5.0V

6.9V

TX:3.0V
RX:0V

TX:3.0V
RX:0V

TX:0V
RX:5.0V

800mVrms

5.8V

5.1V

5.5V

TX:0V
RX:2.9V

TX:2.9V
RX:0V

TX:2.1V
RX:2.2V

TX:6.5V
RX:0V

TX:5.4V
RX:0V

3.0V

WIDE:0V
NAR:5.0V

4.9V

TX:0V
RX:5.4V

TX:0V
RX:7.3V

TX:0V
RX:0.8V

MEASUREMENT CONDITIONS

 VOLTMETER
 Amplitude(Oscilloscope):100MHz
 Frequency:440MHz
 Transmission:25W

TX:0V
RX:7.3V

TX:0V
RX:1.2V

TX:0V
RX:8.0V

TX:3.6V
RX:0V

TX:0V
RX:5.0V

11 - 2

Summary of Contents for IC-F620

Page 1: ...SERVICE MANUAL UHF TRANSCEIVER iF610 iF620 iF621...

Page 2: ...R 1110003490 S IC TA31136FN IC F610 MAIN UNIT 5 pieces 8810009990 Screw PH BT M3 8 ZK IC F620 Bottom cover 10 pieces Addresses are provided on the inside back cover for your convenience REPAIR NOTES 1...

Page 3: ...ON 5 1 5 2 PLL ADJUSTMENT 5 3 5 3 SOFTWARE ADJUSTMENT 5 4 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS SECTION 8 SEMI CONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS 9 1 FRONT UNIT 9 1 9 2 MAIN UNIT...

Page 4: ...440 000 490 000 MHz H band 480 000 512 000 MHz USA 480 000 520 000 MHz EUR GEN N W 8K50F3E 16K0F3E 12 5 kHz Narrow 25 kHz Wide N M 8K50F3E 14K0F3E 12 5 kHz Narrow 20 kHz Middle Max 256 ch 16 channels...

Page 5: ...IC10 AN78L05M VCO circuit CPU IC20 HD64F2268TF Antenna switch Low pass filter circuits 1st mixer Q3 3SK272 2nd IF filter FI2 ALFYM450F K FM IF IC IC1 TA31136FN D A converter IC6 M62364FP Referance cr...

Page 6: ...point D from the plate and remove the plate Unsolder 3 points E from the antenna connector Remove the clip F Disconnect the cable G from J5 Unscrew 11 screws H H G F D E J5 Lift up the front portion o...

Page 7: ...ixer circuit converts the received signals to a fixed frequency of the 1st IF signal with the PLL output frequency By changing the PLL frequency only the desired frequency will pass through a MCF Mono...

Page 8: ...the CPU IC20 pin 46 via the CDEC line to control the AF mute switch 4 2 TRANSMITTER CIRCUIT 4 2 1 MICROPHONE AMPLIFIER CIRCUIT MAIN unit The microphone amplifier circuit amplifies audio signals withi...

Page 9: ...equency The PLL output frequency is controlled by the divided ratio N data of a programable divider The PLL circuit contains the TX RX VCO circuit Q14 Q13 The oscillated signal is amplified at the buf...

Page 10: ...ated Outputs IF bandwidth control signal High While IF bandwidth is narrow Input port for the data signals from the DTMF decoder IC19 Outputs clock signal to the DTMF decoder IC19 Outputs data signals...

Page 11: ...hing Input port for the connected modem unit via external connector J9 Output port for the connected modem unit via external connector J9 33 34 36 37 38 39 40 41 43 44 45 46 47 48 49 50 51 52 55 59 68...

Page 12: ...date condition t Set or modify adjustment data as desired 5 1 EQUIPMENT DC power supply RF power meter terminated type Frequency counter FM deviation meter DC voltmeter GRADE AND RANGE Output voltage...

Page 13: ...F T1 0 Enter to sweep BPF T2 0 Enter to sweep BPF T3 0 Enter to sweep BPF T4 0 Enter to sweep TXF Enter to start S METER Enter to start D A BPF T1 50 32h 0 98 V BPF T2 50 32h 0 98 V BPF T3 50 32h 0 98...

Page 14: ...000 MHz L 440 000 MHz M 480 000 MHz H Receiving Output power Low1 Transmitting Operating freq 430 000 MHz L 490 000 MHz M 520 000 MHz H Receiving Output power Low1 Transmitting MAIN Connect a digital...

Page 15: ...ating freq 415 000 MHz L 465 000 MHz M 500 000 MHz H Output power Low1 IF bandwidth Wide CTCSS 88 5 Hz DTCS code 007 Set the FM deviation meter as HPF OFF LPF 20 kHz De emphasis OFF Detector P P 2 No...

Page 16: ...set as Frequency 400 000 MHz L 440 000 MHz M 480 000 MHz H Level 14 V 84 dBm Modulation 1 kHz Deviation 3 5 kHz N W 2 8 kHz N M Receiving Set an SSG as Level 0 45 V 114 dBm Modulation 1 kHz Deviation...

Page 17: ...90 S CERAMIC C1608 CH 1H 470J T C9 4030007090 S CERAMIC C1608 CH 1H 470J T C10 4030007090 S CERAMIC C1608 CH 1H 470J T C11 4030007090 S CERAMIC C1608 CH 1H 470J T C12 4030007090 S CERAMIC C1608 CH 1H...

Page 18: ...790000660 S DIODE MA728 TX D2 1750000510 S DIODE UM9401F 25W D3 1710001060 DIODE XB15A407 45W D4 1750000710 S VARICAP HVC350BTRF D5 1750000760 S DIODE MA4PH224 D6 1790000620 S DIODE MA77 TX D8 1750000...

Page 19: ...OR ERJ3GEYJ 221 V 220 R77 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 k R78 7030003410 S RESISTOR ERJ3GEYJ 561 V 560 R79 7030003500 S RESISTOR ERJ3GEYJ 332 V 3 3 k R80 7030003440 S RESISTOR ERJ3GEYJ 102 V...

Page 20: ...SISTOR ERJ3GEYJ 471 V 470 R259 7030003530 S RESISTOR ERJ3GEYJ 562 V 5 6 k R260 7030003620 S RESISTOR ERJ3GEYJ 333 V 33 k R261 7030003620 S RESISTOR ERJ3GEYJ 333 V 33 k R262 7030003620 S RESISTOR ERJ3G...

Page 21: ...ROLYTIC ECEV1EA330SP L 4510005750 S ELECTROLYTIC ECEV1EA220SP M H C92 4030009920 S CERAMIC C1608 CH 1H 050B T C93 4030009910 S CERAMIC C1608 CH 1H 040B T 25W 4030009350 S CERAMIC C1608 CH 1H 3R5B T 45...

Page 22: ...600 S CERAMIC C1608 JB 1E 104K T C279 4030011600 S CERAMIC C1608 JB 1E 104K T C280 4510004650 S ELECTROLYTIC ECEV1EA4R7SR C281 4030011340 S CERAMIC C1608 CH 1H 471J T C282 4030011600 S CERAMIC C1608 J...

Page 23: ...C387 4030011600 S CERAMIC C1608 JB 1E 104K T C388 4030017490 S CERAMIC C1608 JB 1A 105K T C389 4510005630 S ELECTROLYTIC ECEV1EA330SP L 4510005750 S ELECTROLYTIC ECEV1EA220SP M H C390 4030007050 S CER...

Page 24: ...BT M2 8 NI ZU 4 MP13 8810009990 Screw PH BT M3 8 ZK 6 MP14 8930057890 Non woven sheet CF 1 MP15 8930057940 Shield sponge N EUR only 1 ACCESSORY PARTS F1 5210000120 Fuse FGB 15A 25W 2 5210000080 Fuse F...

Page 25: ...C MP13 C MP11 C MP5 M MP2 M MP3 M MP11 C MP6 M MP13 C MP9 C MP8 M W2 M J4 M MP14 M MP20 M MP1 M MAIN UNIT MP4 M MP13 M MP11 C J1 C MP7 C SP1 C MP8 C MP11 C Unit abbreviations F FRONT UNIT M MAIN UNIT...

Page 26: ...K880 Y 2SK1829 3SK272 3SK293 DTA144EUA T106 DTC144EUA T106 DTC363 EK XP1214 XP6501 AB Symbol BAR Symbol R24 Symbol LL Symbol AB Symbol QO Symbol R25 Symbol MFO Symbol DAQ Symbol VG Symbol 4L Symbol XY...

Page 27: ...SECTION 9 BOARD LAYOUTS 9 1 FRONT UNIT TOP VIEW 9 1 8V 2 8 to microphone 1 7 J1 AFO MICE GND CLO PTT MIC CLI...

Page 28: ...1 to MAIN unit J2 19 2 20 J2 GND PWR LINH LCS LCK LSO AFVI CLI GND MIC 8V 5V KR0 KR1 KR2 FSW HORN CLO PTT AFO 1 16 48 33 32 17 49 64 9 2 BOTTOM VIEW FRONT UNIT...

Page 29: ...PO RMUT DET DISC REM CCS CIRQ SO SI SCK PTTI PTTO MCOT MCIN AUX BUSY MDWN SIG OPT1 OPT2 OPT3 GND OPV3 OPV2 OPV1 to optional unit PTT 11 to optional cable OPC 617 1 J6 GND IN GND DISC GND PAAF GND HORN...

Page 30: ...1 4 8 1 7 14 8 5 12 11 1 1 7 14 8 23 33 22 44 34 1 25 26 50 51 75 76 100 9 4 BOTTOM VIEW MAIN UNIT...

Page 31: ...44EU J6 PAAF C PTTO J1 PTTI J1 DS12 LCD MICI AF AMP SW D31 DAN222 DTC144EU Q50 SW DTC144EU Q49 PA SW NJM12902V IC21 M62334FP IC7 TONE CTCS SIG TC4W53FU IC15 PM FM AMP D A A DER EXPAN Q21 DEMOD MSK HPF...

Page 32: ...30 SEG26 29 SEG25 28 SEG24 27 SEG23 26 SEG22 25 SEG21 24 SEG20 23 SEG19 22 SEG18 21 SEG17 20 SEG16 19 SEG15 18 SEG14 17 SEG13 16 SEG12 15 SEG11 14 SEG10 13 SEG9 12 SEG8 11 SEG7 10 SEG6 9 SEG5 8 SEG4 7...

Page 33: ...20T152 C380 0 001 C379 22p C381 22p C382 0 001 L37 0 1 R9 220 R8 220 L5 LW 25 C12 470p C375 0 001 C13 47p D2 UM9401F 25W D3 XB15A407 45W L4 15n C15 8p T8V C365 5p R69 4 7k D15 MA77 R50 10k R235 1k C30...

Page 34: ...7 100k C377 0 1 R321 68k C399 0 1 Q41 DTA144EU PA R280 10 X4 CR 520 C341 12p C342 22p R277 12k C339 27p R278 12k D27 MA77 C340 0 01 1 2 3 4 5 6 7 8 AO1 AO2 AO3 AO4 GND SDA SCL VCC IC7 M62334FP VAG R30...

Page 35: ...a Inc 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 Icom Canada A B N 88 006 092 575 290 2...

Page 36: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13817HZ C1U q C 2002 Icom Inc...

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