Icom IC-F3GT, IC-F3GS service manual DTA144EU

Page 37

VCC

T5

L26

C14

R160

4.03 V

R255 3225 H

150

19

R15

R13

0.001 [OTHER]

C204

TX: 1.69 V

C20

56

0.01 N

RX: 0.03 V

00

3.37 V

100

33

TX: 4.62 V

0.001

0.001

RX: 0.04 V

L5

C289

C288

10.5 nH

0.01

0.001

L6

C19

C21

L24

39 nH

L32

C278

2.7 H

CHASSIS

L8

C26

0.001

4.7

C8

L2

L1

R14

L7

15 nH [OTHER]

R3

20 P [OTHER]

0.1 H

0.001

17 nH E

27 P A

0.001

28 nH

32 nH

4.7 k

R12

0.1 H

2.2 k

ANT

C24

C2

TX: 0.7 V

3.3 k

L31

C281

L4

C205

D1

C4

0.001

RX: 0.73 V

Q3

C280

7.5 nH

0.001

50 nH

0.001

MA77

5 P K

6 P [OTHER]

2SC5085 Y

30 P A

C15

R5

9 P [OTHER] 8 P A

47 P [OTHER]

R2

11 P A

9 P K

82 P

Q1

C27

D3

C25

Q2

22

2.2 k

C1

18P

MA77

6 P

2SK2974

C287

15 P N

C22

2SK2973

18 P A

20 P [OTHER]

R16

27 P

R7

TX: 2.16 V

C285

27 P A

D32

TX: 2.17 V

C1

1

R11

100

RX: 0.53 V

56 P K

RB706F-40

C5

C3

RX: 0.53 V

D4

1.2 k

47 P [OTHER]

D33

18 P C

30 P [OTHER]

15 P L R1

R17

MA77

L28

C13

39 P N

24 P B

22 P K 82 k

0.001

RB706F-40

39 P N

1 k

82 nH

R9

C252

TX: 0.8 V

R161

C17

C4215 O

RX: 0 V

10 k

R162

22 k

0.001

0.001

R10

C251

22 k

C298

C18

0.001

27 K

C10

4.7

0.001

68 A

0.001

82 [OTHER]

C23

TX: 1.61 V

0.001

S5

S5

RX: 0.67 V

R5

W7

R61

R222

ERJ3GE-JPW

TX: 1.68 V

Q37

47

10 k [OTHER]

C179

RX: 5.03 V

DTA144EU

15 k A

0.01

TX: 0 V

R210

RX: 4.76 V

L18

R258

TX: 0 V

C73

56 nH C

3.9 k

C90

33 k

RX: 3.57 V

TX: 0.83 V

0.1

68 nH B

0.001

RX: 0.01 V

TX: 1.67 V

Q12

C277

R52

RX: 3.73 V

C80

100 k

3SK293

]

C94

C91

C89

1.5 P [OTHER]

C83

L22

L15

2 P B

1 P

5 P

0.001

2 P G

1 P

50 nH

50 nH

R53

3 P C

TX: 0 V

TX: 0 V

4

2

10 k

D10

C79

1

U350B

D11

RX: 2.43 V

RX: 4.76 V

D9

HVU350B

HVU350B

HVU350B

5 P

3

R187

11

R54

R64

1 k B

C138

R252

IC3A

180 k

R66

100 k C

100 k

0.001

100 k

R62

R57

NJM2902V

00 k

L17

C92

C86 C85 100 k

100 k

C81

L16

C88

C87

R59

56 nH C

C78

D8

D2

C52

C76

D29

C75

R251

C243

R163

100 P

0.001

0.01

470

68 nH B

5 P

180 P

100 P

56 nH C 10 P

MA77

MA77 22 P

8 P

MA8030 H

0.1

330 k

0.001

2.2 k

68 nH B

7

R65

0 k

100 k

C82

95

C93

R63

C84

R58

TXC

T3

T2

0.001

0.001

T1

T4

.001

0.001

100 k

100 k

D: W/N-type	E: ETS/CEPT version	F: W-type and H-band of ETS/CEPT version
ype	J: W-type of ETS/CEPT version	K: L-band of [GEN] and EIA/TIA version
S/CEPT version	N: H-band of ETS/CEPT version	O: W-type and L-band of [GEN]
R: N-type

Image 37

Contents VHF FM Transceivers Ordering Parts IntroductionRepair Notes Table of Contents EIA/TIA Section SpecificationsMain Unit TOP View Inside ViewsBottom View Disassembly Instruction Disassembly and Option InstructionsRemoving the Chassis Panel Removing the Main UnitOptional Unit Installations Receiver Circuits Circuit DescriptionTransmitter Circuits PLL Circuit Power Supply Circuits Voltage LineOutput Expander IC IC10 Port AllocationsPreparation Adjustment Procedures¥ JIG cable Top view PLL Adjustment TXF Software AdjustmentSoftware Adjustment Main Unit Parts ListVariable Thermistor NTCCM20124AG473J-T Tantalum ECST0JY106R Chassis Unit Accessories Mechanical Parts and DisassemblyChassis Parts IC-F3GS parts Transistor and FET’S SEMI-CONDUCTOR InformationDiodes General and EIA/TIA Versions Except W/N-TYPE Board LayoutsMain Unit Bottom View MP6ETS/CEPT Version IC1MP5 VHF FI1 Disassembly Information Parts ListBC-137 Optional Desktop Charger Informasion ConvenientBoard Layout Voltage DiagramOption Unit Block DiagramBU4066BCFV Voltage DiagramBand of ETS/CEPT version N-type DTA144EU Avref Vtref Toned Tonem Avcc Section Voltage DiagramPage 32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan UHF FM Transceivers IC-F4GTIC-F4GS Preparation PLL Adjustment Software Adjustment Power supply requirement APC IC3A NJM3403AV Disassembly and Option Instructions Optional Unit Installations 2ND if and Demodulator Circuits RF signal From PLL Driver Resistor R132 PLL Circuit Power Supply Circuits Voltage LinePTT Adjustment Procedures Screen Display Example DC Power Cable Connections L405 L11 Powerlo BPF T1 NJM3403AV-TE1 IC4 Resistor ERJ2GE Thermistor NTCCM1608 4LH 223KC Ceramic ECUE1H470JCQ ECEV1CA470SP Other Ceramic ECJ0EB1E471K Band MHz band MHz and H-band IC-F4GS parts DTA144 EU DTC144 EE DTC144 EU DTC144 TU DS1 LOW BandFI1 440-470 MHz Band Except W/N-TYPE Icom 470-500 MHz and High Bands B5542B C308 Q19 B5688B BC-137 Optional Desktop Charger Informasion Voltage Diagram Type Type of GEN Type of GEN and EIA/TIA version NJM3403AV M1-band of GEN and EIA/TIA version G W-type of GEN Type 2SC3585 R44 Q403 2SC5107 O Band of ETS/CEPT version N-type M1 440-470 MHz-band Page 13713IZ-C1U

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