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Icom IC-T2E-T, Service Manual

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Icom IC-T2E-T Service Manual Download Page 24

COMPLETE VIEW

J5

SP1
K036NA500-26A27

SP

SPG

0.001

C164

R234

82 k

2

1

KUC3523-040245

MC1

MIC

33 k  

R144

0.001

C163

C1

0.001

JPM1990-2013R

S1

1

2

3

4

5

BATT

VOL IN

VOL OUT

 

VCC

GND

RV-312

R1

VR BOARD

EXT. 
MIC

EXT. 
SP

CHARGE

BATT

J6

47

C173

J2

OPT

EMIC

0.001

C165

C166

J3

AF OUT

SP

CLONE

22 p

C167

47 p

C299

0.001

0.001

C169

J4

0.001

C170

BATT

GND

BATT

0.001

C171

470 p

C172

R156
  18

Q27
2SB1132

SB07-03C

D25

R157
  18

0.001

C200

0.001

C202

DA204U

D24

0.001

C201

R158
4.7 k

0.001

C203

DA204U

D27

15 k

R174

Q31
DTC144TU

470

R132

CLIN

CLOUT

TONE

EMIC

0.1

C148

220 k

R125

MIC

VOL IN

VOL OUT

AF OUT

VCC

T5

R5

5V

S5

VCC

T5

R5

5V

S5

Q22
2SB1132

Q40

XP1501

5

4

1

2

3

R213
10 k

R272
4.7 k

4.7 k

R139

Q21
2SA1588

Q20
2SA1588

0.01

C161

4.7 k

R137

0.01

C160

R5C

S5C

22

22

22

C177

C176

C175

C174

4.7 k

R141

0.001

C162

T5C

Q18
2SB1201

5

6

4

3

2

1

4.7 k

R134

0.001

C159

15

C278

1 k

R133

100

C158

0.001

C157

0.001

C156

10

C155

IC6
S-81250PG-PD

O

I

G

VCC

T5

CPU5

0.01

C248

220 k

R220

Q36
2SC4081

TONE

BEEP

DTMF

330 k

R221

39 k

R218

0.1

C246

0.001

C247

P0

P1

P2

P3

1

2

3

A

4

5

6

B

7

8

9

C

*

0

#

D

1 k

R253

KR3

KR2

KR1

KR0

IR1/DST

IR0

MA6S121

D16

D22

1 k

R254

KS5

KS4

D33

D23

MA111

D34

1 k

R255

D17
MA6S121

D18

MA111

D20

KS3

KS2

KS1

KS0

CTCSS

DET

OPPO

0.1

C258

10 k

R217

X3
EFOS4194E3
[ANI] only

0.01

IC9
LC73881M

C198

1

2

3

4

5

10

9

8

7

6

INPUT

PD

OSCO

OSCI

VSS

VDD

EST

STD

ACK

SD

0.1

C264

680 k

R197

18 k

18 k

R191

R192

R5

4.7 k

R199

Q33
2SC4081

0.047

C222

0.012

C225

220 k

R263

1 k

R200

0.01

C249

T5

5

4

1

2

3

NC

NC

VDD

VSS

IC11
S-80742SL-A6

0.001

C197

10 k

R149

100 k

100 k

100 k

R146

0.47

C230

MA111

D15

220 k

R147

R148

Q23
2SC4081

0.001

C144

NTCCF20124AH

R182

R181

12 k

R103

0.1

C232

330 k

R215

150 k

R216

0.1

C231

10

R102

18 p

C195

D14
MA2S077

12 k

R214

0.001

C196

12 k

R106

CR-584

X2

 10 

µ

H

1M

R101

6 p

C193

 27 p 

C194

RESET

CSIFT

OPCS

OPINT

SCK

SCK

SI

ECS

SO

4

5

3

2

1

IC10
TC4S01F

MA111

D31

only

[ANI]

Q39
DTA114TU

100 k

R259

IC7
X25040SI-2.7

1
2

3
4

5

6

7

8

CS
SO
WP

VSS

VCC

HOLD

SCK

SI

0.001

C245

56 k

R208

560 k

R209

0.01

C251

0.001

C252

CTDA2

CTDA1

CTDA0

10 k

R229

22 k

R230

47 k

47 k

R231

Q35
2SC4081

R224

0.01

C250

1 k

R207

47 k

47 k

R203

C227

R202

0.027

0.0033

C228

0.047

C226

1 k

1 k

1 k

1 k

1 k

1 k

1 k

1 k

1 k

R281

R282

R283

R226

R290

R227

R256

SCK

SI

SO

UNLK

CL OUT

PLST

NOIS

OPINT

ECS

OPPD

OPCS

R260

R252

IR1/DST

IR0

18 k

R195

10 k

R196

100 k

R235

0.01

C199

CONT

1 k

R257

RMUT

MMU

T5C

100 k

R237

TXC

1 k

R236

CTDA2

CTDA1

CTDA0

T4/PWR

AFON

75

SEG40

74

SEG39

73

SEG38

72

SEG37

71

70

SEG35

SEG34

SEG33

SEG31

SEG30

SEG29

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

DA05

DA04

DA03

DA02

DA01

DA00

LIGHT

1

2

3

4

5

6

7

8
9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

PBO/AND

AVSS

TEST

X2

X1

VSS

OSC1

OSC2
RES
NMI

P20/IRG4/ADTRG

P21/SCK1

P22/SI1

P23/SO1

P24/SCK3

P25/RXD

P26/YXD

P27/IRQO

P17/IRQ3/TMIF

P16/IRQ2

P15/IRQ1

P14

P13/TMIG

P12/TMOFH

P11/TMOFL

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

HD6433875A41H 

[THA]

HD6433875A45H 

[Other]

IC8

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

P10/TMOW

VSS

V3

V2

V1

VCC

PA3/COM4

PA3/COM3

PA3/COM2

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

P60/SEG9

P61/SEG10

P62/SEG11

P63/SEG12

P64/SEG13

P66/SEG/14

P66/SEG15

100 k

R279

0.1

C142

CL IN

1 k

R289

VCC

T5

CPU5

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

SEG41

SEG42

SEG43

SEG44

SEG45

SEG46

SEG47

SEG48

SEG49

SEG50

SEG51

SEG52

BEEP

OTMF

PTT

CLV

TEMP

SD

VIN

0.001

C256

1 k

1 k

1 k

22 k

47 k

82 k

180 k

330 k

680 k

1 k

R287

R286

R284

R246

R247

R248

R249

R245

R258

R285

PB2/NA2

PB1/AN1

PB3/AN3

PB4/AN4

PB5/AN5

PB6/AN6  

PB7/AN7

AVREF

VTREF

TONED

TONEM

AVCC

PE3/SEG52/CL2

PE2/SEG51/CL2

PE1/SEG50/DO

PE0/SEG49/M

PD7/SEG48

PD6/SEG47

PD5/SEG46

PD4/SEG45

PD3/SEG44

PD2/SEG43

PD1/SEG42

PD0/SEG41

VCC

+

+

+

+

15

+

+

+

+

Q19
XP6501

R219

68 k

L10

C296

0.1

R291
100 k

COM4  

COM3

COM2

COM1

KS0

KS1

KS2

KS3

KS4

KR0

KR1

KR2

KR3

R5C

S5C

KS5

+

OUT

473 k

L34
10 

µ

H

TX: 5
RX: 0

2.9V

9.5V

5.0V

5.0V

8.2V

TX:    0V
RX: 1.0V

TX:   0V
RX:  3V

TX:    0V
RX: 0.4V

TX: 1.4V
RX:    0V

TX: 2.0V
RX: 0.5V

SECTION 11       VOLTAGE DIAGRAM

11 - 1

Summary of Contents for IC-T2E-T

Page 1: ...144 MHz FM TRANSCEIVER iC t2h iC t2e t...

Page 2: ...6 pieces Addresses are provided on the inside back cover for your convenience REPAIR NOTES 1 Make sure a problem is internal before disassembling the transceiver 2 DO NOT open the transceiver until th...

Page 3: ...4 2 4 3 PLL CIRCUIT 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 2 5 3 RECEIVER ADJUSTMENT...

Page 4: ...d only 0 7 W typical low Modulation system Variable reactance frequency modulation Max frequency deviation 5 kHz Spurious emissions Less than 60 dB External microphone connector 3 conductor 2 5 d mm 1...

Page 5: ...3140GS 1st mixer circuit Q13 2SK360IG FM IF IC IC2 TA31136FN Power amplifier Q1 2SK3075 EEP ROM IC7 X25040S1 2 7 TX RX switching D3 D4 MA77 Antenna switching circuit D8 D32 HVU131TRF Crystal filter FI...

Page 6: ...assis Removing the MAIN unit q Remove the sealing rubber w Unsolder 2 points D and unscrew 1 nut E e Unscrew 2 screws F and 6 screws G silver 2 mm to separate the chassis and MAIN unit r Remove the MA...

Page 7: ...signal coming from the VCO circuit to produce a 30 85 MHz 1st IF signal The 1st IF signal is applied to a crystal filter FI1 to suppress out of band signals The filtered 1st IF signal is applied to t...

Page 8: ...pass filter circuit IC3d pins 13 14 via the analog switch IC4 pins 2 3 The filtered AF signals are applied to the modulator circuit after passing through the analog switch IC4 pins 8 9 and the deviati...

Page 9: ...is detected on phase at the phase detector using the reference frequency If the oscillated signal drifts its phase changes from the ref erence frequency causing a lock voltage change to compen sate f...

Page 10: ...ignal Low While power is ON Outputs transmit output power select HIGH or LOW signal Low HIGH power is selected Input ports for the PTT switch High While PTT is pushed Outputs LCD backlight control sig...

Page 11: ...RADE AND RANGE Output voltage 9 6 V DC Current capacity 5 A or more Measuring range 1 10 W Frequency range 120 300 MHz Impedance 50 SWR Less than 1 2 1 Frequency range 0 1 300 MHz Frequency accuracy 1...

Page 12: ...h HIGH Connect an audio generator to the MIC jack and set as 1 kHz 90 mV Set an FM deviation meter as HPF OFF LPF 20 KHz De emphasis OFF Detector P P 2 Transmitting MAIN Top panel Top panel Top panel...

Page 13: ...tion 3 5 kHz Receiving Operating freq 146 000 MHz Connect the JIG to the SP jack Connect an SSG to the antenna con nector and set as Frequency 146 000 MHz Level 0 5 V 113 dBm Modulation OFF Receiving...

Page 14: ...0010110 S XTAL CR 584 6 79966 MHz X3 6050009020 S CERAMIC EFOS4194E3 ANI only X4 6070000210 S DISCRIMINATOR CDBCA450CX24 L1 6200008260 S COIL 0 30 1 7 8TL 60N L2 6200008260 S COIL 0 30 1 7 8TL 60N L3...

Page 15: ...8 7030003520 S RESISTOR ERJ3GEYJ 472 V 4 7 k R181 7030005870 S RESISTOR RR0816R 104 D 100 k R182 7510000910 S THERMISTOR NTCCF2012 4AH 473KC T REF ORDER DESCRIPTION NO NO MAIN UNIT R183 7030003380 S R...

Page 16: ...A REF ORDER DESCRIPTION NO NO MAIN UNIT C118 4030006900 S CERAMIC C1608 JB 1E 103K T A C119 4030008680 S CERAMIC C2012 JF 1C 105Z T A C120 4030011600 S CERAMIC C1608 JB 1C 104KT N C121 4030006850 S CE...

Page 17: ...62B DS2 5010000160 S LED LNJ310M6URA DS3 5010000160 S LED LNJ310M6URA DS4 5040002190 S LED LNJ808R8ERA MC1 7700002160 MICROPHON KUC3523 040245 S1 2230000900 S SWITCH JPM1990 2013R W1 7030003860 S JUMP...

Page 18: ...Rear sheet J 1 SEA CSA 1 TWN ANI 8930047940 1902 Rear sheet K USA 1 8930047950 1902 Rear sheet L EUR UK ITA 1 MP19 8830001250 Nut antenna connector 101 1 MP20 8810000100 Screw PH M2 4 ZK 2 MP21 88100...

Page 19: ...P15 C EP2 M MP24 C MP17 C MP33 C MP30 C MP31 C SP1 C MP21 C VR board MP21 C MAIN unit MP21 C MP21 C MP35 C MP21 C MP1 VCO MP28 C MP34 C MP1 M MP25 C MP11 C MP1 C MP18 C MP23 C MP10 C J1 C MP20 C MP4 C...

Page 20: ...2SC4403 3 LY3 B E C 2SK3074 WA G D S S 2SK880 Y XY G S D UN521D 8M B E C DTA114TU 94 DTC144TU 06 DTC144EU 26 B E C XP1501 AB 5R C1 C2 E B1 B2 XP6401 5O E E B C C B 2SK3075 RF72 G D S S 2SK360IG TR IG...

Page 21: ...D VCC VR BOARD VCO OUT S5V GND SHIFT LV The combination of this page and the next page shows the unit layout in the same configuration as the actual P C Board SECTION 9 BOARD LAYOUTS MAIN UNIT J6 VCC...

Page 22: ...the unit layout in the same configuration as the actual P C Board EMIC OPT EXT MIC J2 CLONE AF OUT SP EXT SP J3 CHARGER J4 PTT SWITCH J1 CHASSIS BATT VOL IN VOL OUT GND VCC VR BOARD VCOOUT S5V GND SH...

Page 23: ...IGHT LED SW CPU 5 IC9 IC10 Q39 ANI only X3 4 194 MHz Q33 Q35 Q36 RESET DTMF DECODER LPF CTDA 0 2 COM 1 4 SEG 29 52 CIN DTMF DTMF BEEP LPF BUFFER IC6 R5C S5C T5C IC11 D15 Q23 IC8 CPU X2 6 8 MHz D14 CLO...

Page 24: ...k R230 47 k 47 k R231 Q35 2SC4081 R224 0 01 C250 1 k R207 47 k 47 k R203 C227 R202 0 027 0 0033 C228 0 047 C226 1 k 1 k 1 k 1 k 1 k 1 k 1 k 1 k 1 k R281 R282 R283 R226 R290 R227 R256 SCK SI SO UNLK C...

Page 25: ...9 8 I O I O I O O I O I O I O I I O CONT B CONT C VEE VDD CONT A CONT D 0 01 C131 VOL IN R5C MMUT VCC T5 S5 100 R28 220 R27 150 R23 1 p C37 6 8 k R26 0 001 0 001 0 001 0 001 18 p 0 001 0 001 0 001 0 0...

Page 26: ...EG42 PD0 SEG41 VCC CLV PLST SCK SO UNLK L21 W10 0 001 0 1 C54 C56 IC1 PD3140GS 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC1 IN1 ENB CLK DATA T1 LOK CP1 FI1 FO1 GND1 IN2 VCC2 XB XI XO GND2 C...

Page 27: ...Australia Phone 03 9387 0666 Fax 03 9387 0022 Unit 9 Sea St Herne Bay Kent CT6 8LD U K Phone 01227 741741 Fax 01227 741742 URL http www icomuk co uk Zac de la Plaine Rue Brindejonc des Moulinais BP 58...

Page 28: ...A 5518MI S 1998 by Icom Inc 6 9 16 Kamihigashi Hirano ku Osaka 547 0002 Japan Count on us...

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