Icom IC-4008MKII service manual Voltage Diagram, DTA144EU

SECTION 11 VOLTAGE DIAGRAM

11-1 MAIN UNIT

C

: COMMON

T

: TX

R60

R98

R99

R100

R101

R102

R

: RX

J4 4-175638-4

100 k

100 k

100 k

100 k

100 k

100 k

SO

: SQL OPEN

UNLK

to RF unit J2

PSC

1

2

SC

: SQL CLOSE

CK

BATT

3

4

LON: LIGHT ON

DATA

5

6

T+3

LOF : LIGHT OFF

STB

7

8

C44

SQL

VOL

9

10

0.1

SENS

R+3

11

12

AF

13

14

W4

W1

C90

S1

470 P

SW-149

R12

MOD

10

[PTT]

[DOWN]

[UP]

[MOD]

[POWER]

T: 0

C: 3.12

Q1

R: 3.02

R49

DTA144EU

C8

R89

R202

100

10

1 k

100

C9

C42

C74

C: 3.12

470 P

0.01

0.001

R90

C: 3.10

C: 0

1 k

R13

PTT2

4.7 k

W3

C75

T: 1.45

Q2

Q3

R10

C95

0.001

R67 18 k

330 P

IC2a

R: 0

T: 3.05

UN9215

UN5119

82

R96

R71 33 k

R: 0

C7

C91

R70 68 k

NJM2100M

100 k

0.1

470 P

k

T: 1.48

C29

C6

Q6

C4

4.7

R97

R: 0

T: 1.58

R6

R95

C92

270 P

T: 1.46

IC2b

1

0.1

MC1 KUC3523

100 k

R39

R: 0

180 k

2SK1829

470 P

R: 0

C53

R30

8

3

82 k

R2

R4

NJM2100M

IC3

0.1

68 k

5

R103

2

82 k

82 k

7

C3

C79

R14

C10

1

X24C01AS

TEST

100 k

6

R7

0.1

0.1

T: 0

3.3 k

470 P

C87

C73

R50

C5

REMIN

CTCIN

TXMOD

CTCO2

CTCO1

CTCO0

POWER

PLLST

PLLDA

PLLCK

RMUTE

4

C1

R108

C83

1.2 k

R: 3.12

470 P

SQLIN

AFON

BEEP

UNLK

TEST

0.0033

R40

0.1

4.7 k

470 P

CLIN

0.0015

33 k

R9

RXD

47 k

1

8

R51

R52

100 k

C11

NC

VCC

C85

C93

R118

470 k

330 k

2

NC

NC

7

T-ID

0.1

330 P

4.7 k

T: 2.75

470 P

3

NC

SCL

6

4

VSS

SDA

5

R5

C24

R: 0

Q29

R68

R69

SENIN

BATIN

1.2 M

0.033

18 k

18 k

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

R62

DTC114EU

P83/AN7

P80/TI1

P21/PTO1

P13/TI0

P12/TNT2

P11/TNT1

P03/SI/SB1

100 k

R45

T: 1.60

R53

R31

C25

R46

C36

R: 0

2.2 M

1.5 M

1 M

470 P

C54

61

AN3

100

0.001

C: 3.10

MMUTE

62

0.1

AN4

AN5AN2

AN1

AN0

P82/AN6

P81/TI2

P33

P32

P31/SYNC

P30/LCDCL P23/BUZ

P22/PCL/PTO2

P20/PTO0

63

P10/TNT0P02/SO/SB0

40

R36

R37

C: 1.95

C35

R110

64

AVSS

P01/SCK

39

10 k

Q7

1 M

T: 3.00

65

AVREF

38

22 k

0.1

P00/INT4

C40

R: 0

66

VDD

37

2SC4081

R43

C45

R63

67

P53

0.1

R38

C34

24 P

5.6 k

XT1

P52

36

22 k

56 k

68

XT2

35

R105

C31

C32

0.0047

P51

X1

R72

69

IC

34

10 k

0.022

0.1

R41

R42

P50

R35

TO RF unit

CR-627

1 M

70

X1

VSS

33

5.6 k

4.7 k

3.9 k

T: 2.77

71

X2

32

P43

SO: 0

C46

RESET

72

RESET

31

PTT2

SC: 2.77

P42

R106

C: 1.65

Q23

24 P

EEPCK 73

P60/KR0

30

P41

10 k

C21

C15

EEPDA

74

29

W6

2SJ144

P61/KR1

P40

R64

T: 0

0.1

0.1

R22 33 k

PSC

75

P62/KR2

VLC2

28

18 k

C82

R57

RXV

76

P63/KR3

27

0.047

15 k

R: 0.86

BEEP

R58

VLC1

R88

TXV

77

26

RV-244

P70/KR4

VLC0

R65

C26

C72

R86

100 k

LAMPC 78

P71/KR5

25

18 k

REMIN

R32

100 k

10 k

BIAS

C51

470 P

R33

C27

0.01

LON: 0

MICSW 79

24

680 k

P72/KR6

COM3

0.1

6.8 k

0.1

C59

LOF: 3.02

MMUTE 80

P73/KR7

23

Q12

R87

COM2

R34

470 P

R27

Q14

COM1

22

2SC4081

C28

1 M

100

S31/BP7

S30/BP6

S29/BP5

S28/BP4

S27/BP3

S26/BP2

S25/BP1

S24/BP0

6.8 k

21

R66

0.047

DTA114EU

COM0

S23

S22

S21

S20

S19

S18

S17

S16

S15

S14

S13

S12

18 k

RMUTE

1

2

3

4

5

6

7

8

9

10

11

12

13

14 15

16

17

18

19

20

COM0 COM1

COM2

AFON

T: 0

SC: 0

DS1

R74 10 k

SO: 4.50

REMIN

LN1371G

R24 1.5 M

BEEP

LON: 2.82

R61

S25

S24

S23

S22

S21

S20

S19

S18

S17

S16

S15

S14

S13

S12

BATIN

R79 220 k

D2

LOF: 0

47

Q5

T,SC: 0.43

C20

C61

C56

T: 3.94

C49

C48

0.1

1SS355

R94

2SA1362

R25

SO: 1.93

SO: 3.79

10

11

12

13

14

15 16

17

0.1

220 k

0.1

0.1

22

1

2

3

4

5

6

7

8

9

SC: 3.98

12 k 1

8

C18

SEG25

SEG24

SEG23

SEG22

SEG21

SEG20 SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12 COM0

COM1

COM2

R23

Q10

2

7

C17

10

T: 0

15 k

3

6

150

R80

Q18

2SC4081

T,SC: 0.49

4

100 k

SO: 2.95

5

2SA1586

SC: 0

SO: 0.61

R55

R56

C97

C96

SP1

DS2

T:

0

120

1

330 P

330 P

CHASSIS

IC9

LD-BU10185J

T: 3.04

C67

R: 2.97

C55

C47

R54

R26

R: 2.40

1.2 k

C52 NJM2070M

C50

10 k

2.2

R81

3.3

470 P

2.2

0.1

10 k

T: 0

Q11

TXV

SO: 2.33

2SC4213

W5

RXV

R+3

SC: 0

R+3

R76

BATT

C: 3.82

C: 3.02

[ITA/-1] [CSA/-1]

[CSA/-1]

100 k

R302

D101

[ITA/-1]

Q28

IC5 S-80928ANMP

R200

T: 1.07

T: 0.43

C63

C57

1 k

MA2S111

R201

R119

+3 V

1

OUT

NC

5

0.1

C65

0.1

2.2 M

2SB798

R: 0

R: 0

270

100 k

C98

2

3

2

1

Q28

330 P

C60

VDD

4

0.1

R301 [ITA/-1]

3

2

1

3

VSS

NC

Q25

2SB798

0.1

C94

IC6 S-81230SG

118 k

Q101

C81

330 P

UMZ2N

R78

1

GND

NC 5

UMZ1N

0.033

4

5

6

2

R112

Q27

+3 V

10 k

VIN

NC 4

33 k [ITA/-1]

C86

4

5

6

C: 2.50

3

VOUT

10 k [CSA/-1]

2.2

2SC4081

T: 3.70

W7

R77

C64

[ITA/-1]

R: 4.00

C80

C88

C62

D5

C: 3.13

22

D303

100/4 V

470 P

0.1

470

D4

D101

MA2S111 [ITA/-1]

MA2S111

1SS355

1SS355

[CSA/-1]

1SS355 [CSA/-1]

C: 3.02

[ITA/-1]

[CSA/-1]

C71

T: 0.50

T: 2.68

[ITA/-1] [CSA/-1]

C89

0.1

R: 0

R: 0

T: 1.56 T: 3.70

470 P

R114

R: 0

R: 0

R115

1.2 k [ITA/-1]

3.3 k [CSA/-1]

[CSA/-1]

560

11 - 1

J1 HSJ-1102-01-540

J3 HSJ1493-01-010