Icom IC-T2H schematics

SECTION 11 VOLTAGE DIAGRAM

SP1
K036NA500-26A27

MC1

KUC3523-040245

JPM1990-2013R

0.001

RV-312
R1

VR BOARD

J2

EXT.
MIC

J3

EXT.
SP

CHARGE

BATT

J5

SP

2

SPG

1

C163

J6
1

2
3
4
5

BATT

GND

0.001

BATT
VOL IN
VOL OUT

GND
VCC

S1

C1

J4

OPT

EMIC

AF OUT
SP

CLONE

R144
33 k

C164

0.001

MIC

C165

0.001

C167
22 p

BATT

VOL IN

C166

0.001

C171

0.001

VOL OUT

AF OUT

MIC

C169

0.001

C172
470 p

L34
10 µH

C170

0.001

EMIC

D24
DA204U

+

C173
47

D27
DA204U

C299
47 p

R156
18

R157
18

C200

0.001

TONE

C148

0.1

R125
220 k

Q27
2SB1132

8.2V

C201

0.001

R132
470

VCCT5R5

5.0V

R158

4.7 k

R174
15 k

5V

S5

C177

15

Q31
DTC144TU

D25

SB07-03C

C202

0.001

++++

C174

C176

22

C175

22

Q40

XP1501

CLIN

CLOUT

P0

1

4

7

*

C203

0.001

VCC
T5

R5
S5

5V

Q22
2SB1132

22

5

123

R141

4.7 k

T5C

P1 P2

23A

56

89

0#

4

R213
10 k

C162

0.001

P3

R272

4.7 k

B

C

D

R139

4.7 k

Q21
2SA1588

R5C

D16
MA6S121

D17
MA6S121

Q20
2SA1588

C161

0.01

R137

4.7 k

S5C

R253
1 k

D33

D34
MA111

D18

C160

0.01

D20
MA111

D23

D22

3

R134

4.7 k

56

21

C159

0.001

VCC
T5

CPU5

Q18
2SB1201

4

Q19
XP6501

R133

1 k

++ +

C278
15

KR3
KR2
KR1
KR0
IR1/DST
IR0

R254

1 k

KS5
KS4

R255
1 k

KS3
KS2
KS1
KS0

C158
100

5.0V

CTCSS

IC6
S-81250PG-PD

OI

G

C258

DET

0.1

X3
EFOS4194E3
[ANI] only

C264

0.1

R197
680 k

R263

220 k

R191
18 k

C222

0.047

R291
100 k

R217
10 k

C156

0.001

TX: 0V
RX: 1.0V

R192
18 k

TX: 0V
RX: 0.4V

OPPO

C157

0.001

1
2

3
4

5

C225

0.012

9.5V

C155

10

INPUT
PD
OSCO

OSCI
VSS

IC9
LC73881M

TX: 0V
RX: 3V

R199

4.7 k

Q33
2SC4081

R200

1 k

R221
330 k

Q36
2SC4081

TONE

VDD

STD

ACK

C198

0.01

EST

SD

R5

C249

0.01

R220
220 k

10

9
8
7
6

2.9V

C250

0.01

C248

0.01

C246

0.1

C247

0.001
R218

39 k

BEEP

IC10
TC4S01F

4

5

Q39
DTA114TU

R224

47 k

D31
MA111

T5

3
2

1

R219

68 k

R146
100 k

DTMF

[ANI]
only

R208

56 k

Q35
2SC4081

R207

1 k

54

NC

OUT

123

C230

0.47

+

D15

MA111

SCK

OPCS

OPINT

R209

560 k

C251

0.01

R203
47 k

C228

0.0033

NC

IC11
S-80742SL-A6

VDD

VSS

R149
10 k

R148
100 k

R147
220 k

SI

ECS

R259
100 k

TX: 2.0V
RX: 0.5V

TX: 1.4V
RX: 0V

C252

0.001

C227

0.027

Q23
2SC4081

1
2

3
4

R202
47 k

C197

0.001

C144

0.001

IC7
X25040SI-2.7

VCC

CS
SO

HOLD

WP

SCK

VSS

C245

0.001

R229

R230

10 k

22 k

C226

R182

NTCCF20124AH

R103
12 k

D14
MA2S077

R214
12 k

C196

0.001

8
7
6

5

SI

CTDA2
CTDA1
CTDA0

R231
47 k

R234
82 k

0.047

SCK

473 k

R181
100 k

R106
12 k

SO

C195
18 p

SCK
SI
SO

UNLK

CL OUT

PLST

NOIS
OPINT
ECS
OPPD

OPCS

C232

0.1

X2
CR-584

R215
330 k

C193
6 p

R216
150 k

R101
1M

RESET
CSIFT

R290
1 k

10 µH

R226
1 k

R227

R102

L10

C194

1 k

C231

0.1

10

27 p

R283

1 k

R260

1 k

R256
1 k

IR0

IR1/DST

R282
1 k

R281

1 k

R252
1 k

VCC
T5

CPU5
TEMP

R279

100 k

C296

0.1

1

PBO/AND

2

AVSS

3

TEST

4

X2

5

X1

6

VSS

7

OSC1

8

OSC2

9

RES

10

NMI

11

P20/IRG4/ADTRG

12

P21/SCK1

13

P22/SI1

14

P23/SO1

15

P24/SCK3

16

P25/RXD

17

P26/YXD

18

P27/IRQO

19

P17/IRQ3/TMIF

20

P16/IRQ2

21

P15/IRQ1

22

P14

23

P13/TMIG

24

P12/TMOFH

25

P11/TMOFL

R195
18 k

CL IN

R196
10 k

C142

0.1

26

CONT

P10/TMOW

R289
1 k

SD

VIN

PB2/NA2

PB1/AN1

V3

V2V1VCC

VSS

2728293031

R235
100 k

C199

0.01

PTT

CLV

PB3/AN3

PB4/AN4

PB5/AN5

PB6/AN6

PB7/AN7

PA3/COM4

PA3/COM3

PA3/COM2

32333435363738

COM4

COM3

COM2

SEG49

SEG50

SEG51

SEG52

BEEP

OTMF

AVCC

VTREF

AVREF

TONED

TONEM

PE0/SEG49/M

PE1/SEG50/DO

PE3/SEG52/CL2

PE2/SEG51/CL2

IC8
HD6433875A41H [THA]
HD6433875A45H [Other]

PA3/COM1

P50/WKP0/SEG1

P51/WKP1/SEG2

P52/WKP2/SEG3

P53/WKP3/SEG4

P54/WKP4/SEG5

P55/WKP5/SEG6

P56/WKP6/SEG7

P57/WKP7/SEG8

3940414243444546474849

COM1

KS1

KS0

KS2

KS3

KS4

KS5

SEG46

SEG47

SEG48

PD7/SEG48

PD6/SEG47

P60/SEG9

P61/SEG10

KR1

KR0

KR2

SEG43

SEG45

SEG44

PD5/SEG46

PD4/SEG45

PD3/SEG44

P62/SEG11

P63/SEG12

P64/SEG13

KR3

R5C

S5C

SEG41

SEG42

767778798081828384858687888990919293949596979899100

PD2/SEG43

PD1/SEG42

PD0/SEG41

P66/SEG/14

P66/SEG15

50

R257
1 k

VCC

P97/SEG40
P96/SEG39

P95/SEG38
P94/SEG37
P93/SEG36
P92/SEG35
P91/SEG34
P90/SEG33
P87/SEG32
P86/SEG31
P85/SEG30
P84/SEG29
P83/SEG28
P82/SEG27
P81/SEG26
P80/SEG25
P77/SEG24
P76/SEG23
P75/SEG22
P74/SEG21
P73/SEG20
P72/SEG19
P71/SEG18
P70/SEG17
P67/SEG16

C256

0.001

VCC
T5
S5

CLV

T5

DS2

LNJ310M6URA

TX: 5V
RX: 0V

DS3

LNJ310M6URA

Q25
2SC4081

R204

15 k

R205
15 k

75

SEG40

74

SEG39

73

SEG38
SEG37

72
71
70

SEG35

69

SEG34

68

SEG33
67
66

SEG31
65

SEG30
64

SEG29
63

R287

1 k

62
61
60
59

DA05
58

DA04

DA03

57

DA02

56

DA01

55

DA00

54
53
52

LIGHT

51

R285
1 k

R286

R245

R247

R249

R284

22 k

R237
100 k

1 k

82 k
R248

330 k

R258

CTDA2
CTDA1
CTDA0
T4/PWR

R246

1 k

R236
1 k

180 k

680 k

AFON

47 k

T5C

TXC

RMUT
MMUT

COM1
COM2
COM3
COM4
SEG29
SEG30
SEG31
SEG33
SEG34
SEG36

SEG37
SEG38
SEG39
SEG40
SEG41
SEG42
SEG43
SEG44
SEG45
SEG46
SEG47
SEG48
SEG49
SEG50
SEG51
SEG52

DS4
LNJ808R8ERA

R155
470

DS1
LM-1462B

1

COM4

2

COM3

3

COM2

4

COM1

5

SEG1

6

SEG2

7

SEG3

8

SEG4

9

SEG5

10

SEG6

11

SEG7

12

SEG8

13

SEG9

14

SEG10

15

SEG11

16

SEG12

17

SEG13

18

SEG14

19

SEG15

20

SEG16

21

SEG17

22

SEG18

23

SEG19

24

SEG20

25

SEG21

26

SEG22

27

COM1

28

COM2

29

COM3

30

COM4

R183
330

VCC
T5
R5
S5
5V

MIC
VOL IN
VOLOUT
AF OUT
EMIC

CLV

PLST
SCK
SO

UNLK

PTT

L21

4.7 µH

W10

C56

0.1

C54

0.001

R5
S5

C65

C51

0.001

C53
2 p

L13

1.5 µH

R90

NTCCF20123NH 153KCT

R91

R262
15 k

VCC

R5
S5
5V

R261
1 k

15 k

C154

R92
RV-152

R89
22 k

+

10

Q17
2SB1462

C147

0.1

4 p

C272

0.01

10

R88
220 k

R130

100 k

C66
10 p

1
2

3
4

5
6
7
8
9

C67

0.001

R87

1.5 k

VCC1
IN1

ENB
CLK

DATA
T1
LOK
CP1
FI1
FO1

C123

0.001

IC1
µPD3140GS

CFWM450E

L25

1.5 µH

C121
470 p

R86
82 k

C122

470 p

R131
470

R294
10 k

GND1

VCC2

GND2

F12

O

R295
1 k

CP2

FO2

C234

0.001

C233

0.001

20
19

IN2

18
17

XB

16

XI

15

XO

14
13

2LO

R85

1 k

C132

0.0022

C68
20p

C119

R84
390

6
7
8

2
3
4

5

1

1

R104
100 k

OSCIN
OSCOUT

MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN

C133

0.1

R45
150

IC2
TA31136FN (D)

C118

0.01

R105
100

12

FI2

11

2LO

I

C120

0.1

R296
1 k

R297
1 k

X1

CR-514

C64
22 p

TX: 0V
RX: 5.0V

IC3c
NJM2902V

10

+

9

-

R108
390 k

Q34
2SK880

R186
47 k

C63
39 p

C134

120 p

R109

10 k

+

C48

1.5

R34
680

MIXIN

GND

N-REC

N-DET

RSSI

IFOUT

QUAD

AFOUT

8

R33

1.5 k
R32

4.7 k

C117

0.001

C217

0.1

C46

0.001

C47

0.1

16
15

14
13
12
11
10

R161

TX: 0V
RX: 0V

D10
HVU350

C85

39 p

R99

6.8 k

C281
15 p

L26

56 nH

22 nH

S5

C129
15

AFON

R3
1 k

32

45

Q9
XP6401

R2
10 k

L17

R178

4.7 k

+

0.15

1

6

L30
56 nH

C290

0.22

TX: 0V
RX: 2.8V

C141

0.001

Q16
XP6501

R120
15 k

C138

3.3

VCC

C70
5 p

C71

0.001

R47
120

+

C21

47

C19

0.001

Q2
2SK3074

R9
56

+

C291
1

Q29
2SC4226

TX: 0V
RX: 0.8V

Q15
2SB1201

+

C139

0.001

L6
47 nH

R7
330

C17

0.001

C79 C80
39 p 39 p

L14

82 nH

6

54

23

1

R121

1 k

C140

0.001

C81

150 p

C78
3 p

R122

1.8 k

R123

4.7 k

R266
150

C15
33 p

C298
33 p

R292
56

R46

R48
220

C20

0.001

56

C204

0.001

L5
25 nH

L4

C14

14.3 nH

0.001

L33
33 nH

R5
47

Q1
2SK3075

C13

0.001

R49

C6968 k

0.001

L16
28 nH 60 nH

D32
HVU131TRF

D8

HVU131TRF

TX: 0V (SQL. open)
RX: 0V (SQL. close)

C295

0.001

C146

+

0.001

C145
100

C27
33 p

T5

C77
18 p

1
2
3
4
5

R126

VOL OUT

C8

0.001

R160
120

L24

0.82 µH

C205

0.001
D1

C11

MA77

56 p

L15

C76
22 p

IC5 TA7368F

NC
VCC
NC

VIN
RIPPLE

12 k

C149

0.1

L3

60 nH

C6
4 p 7 p

C7
15 p

R52
1M

4

1

11

R55
1 k

IC3a
NJM2902V

POUT

PWGND

PREGND

PHASE

NF

C220

0.1

L2

60 nHL160 nH

C4

22 pC518 p

C179

0.01

C73

0.1

2

–

3

+

C75

0.01

10
9
8

7
6

R127

10
C150

10

R53
10 k

R264
330 k

C2
2 p

C3

S5

Q37
DTA144EU

R54
180 k

T4/PWR

+

C151
47 p

C1
7 p

R210

1 k

AF OUT

1

J1

CHASSIS
UNIT

C243

0.001

TXC

C153
220
+

R128
10

C152

0.1

2

5.0V

R298
22

VCO BOARD

L11

R5C

R81
470

R80
82 k

R166
100 k

MMUT

LB-312

L12

0.82 µH

C45

0.001

D6

MA77

C44

0.001

C285

0.001

TX: 0V
RX: 3.4V

C110

0.001

1

I/O

2

O/I

3

O/I

4

I/O

5

CONT.B

6

CONT.C

7

VEE

IC4
BU4066BCFV

R29

1.5 k

W1

R79
1 k

C41
27 p

TX: 0V
RX: 0.7V

HVU350

FI1
FL-251

CONT.A

CONT.D

VOL IN

+

C300

6.8

Q32
UN521D

R82

1.2 k

C279
82 p

C116
10 p

C113

0.001

SD

C125

0.0033

C126

0.012

R93
12 k

4.7V

VCOOUT

S5
GND
SHIFT

LV

TX: 5.0V
RX: 0V

R83
470

C112

0.001

6

-

5

+

IC3b
NJM2902V

R94
560 k

CDBCA450CX24X4

DET

R30
100 k

R95
390 k

7

J1

L22

1.8 µH

C111

0.001

Q14
2SC4215

R96
47 k

5
4
3
2
1

C211

0.1

R151
47 k

+

C218

0.001

R242
22 k

9

C114

0.001

NOIS

C124

0.01

R176

5.6 k

D5

R280
27

C40
1 p

VDD

Q8
2SC4226

2.4V

C38
1 p

R77
470

C108

0.01

14
13
12
11

I/O

10

O/I

9

O/I

8

I/O

C131

0.01

R5
5V

R26

6.8 k

C36

0.001

R25

6.8 k

0.7V

R76

2.2 k

C37
1 p

2.9V

R28
100

R27

220

R24
220

C106
15 p

C107

0.001

R167
100 k

C128

RMUT

C33

0.001

C35

0.001

TX: 0V
RX: 4.9V

L20

1.8 µH

C105

0.001

VCC

1

C39

0.001

VCC

T5
S5

R23
150

R22
27 k

2.9V

C34

0.5 p

Q6
2SC4226

0.7V

Q7
2SC4226

Q13
2SK360IG

R71
56

R112
1M

L10
68 nH

C259
180 p

L35 0.1 µH
[EUR, UK,
ITA, USA]

R68 68

C102

0.001
15 p [EUR, UK, ITA, USA]

L19
LS-523

0V

R70

2.2 k

C212

0.01

C213

0.1

R169

8.2 k

R168

10 k

TONE

CTCSS

R238
15

C32

R20

0.001
47 k

R239

1 k

C31

0.001

0.7V

Q4
2SC4403

R240
100
470 [EUR, UK,
ITA, USA]

L31
39 nH

R69
560

1.5 k [EUR, UK, ITA, USA]

C99

0.001

D12
HVU350

C96

C97

47 p

0.75 p

R97
180 k

R98

180 k

R107
180 k

C136

0.0022

1LD

C28

0.001

C94

0.5 p

C236
3 p

R66
100 k

C95

0.001

R114

47 k

56 nH

R21
100

4.5V

L32

Q5
2SC4226

C30
18 p

C26

0.001

R18
18 k

TX: 0.8V
RX: 0.7V

D4
MA77

D11

HVU350

R64
100 k

C135

+
13
12

-

IC3d
NJM2902V

R116

R159

100 k

220 p

1 k

D3

MA77

C260

0.001

C92
47 p

R115
120 k

14

R15
100

L8
56 nH

C25

27 p

TX: 1.1V
RX: 0V

TX: 3.2V
RX: 1.2V

R243

100 k

R117

1.5 k

C137

0.047

TX: 3.8V
RX: 0V

C24

0.001

R16
270

R11

1.5 k

R12

2.7 k

R61
330

C90

0.001

R13

39

C23

0.001

Q3
2SC3356

R58
22

L18
LS-523

C87

0.001

R118
10 k

R268
12 k

L7 56 nH

R267

6.8 k

TX: 0V
RX: 2.8V

R269
22 k

VCC

Q28
2SC4081

R162
1 k

R163

15 k

0.001

C9

C22
15 p

R10

10

Q12
2SK360IG

R59

15

R119
RV-110

C10

0.001

R62
100 k

R100

1.8 k

MAIN UNIT

LEFT SIDE RIGHT SIDE

11 - 1