Icom IC-T90A manual Tantalum ECST1EY474R

Page 39

[LOGIC UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

C211

4550006140

S.TANTALUM

ECST1EY474R

C240

4030009980

S.CERAMIC

C1608 JB 1H 152K-T

C242

4030016940

S.CERAMIC

ECJ0EB1A393K

C243

4030017330

S.CERAMIC

ECJ0EF1C104Z

C244

4030016930

S.CERAMIC

ECJ0EB1A104K

C246

4030016930

S.CERAMIC

ECJ0EB1A104K

C247

4030017430

S.CERAMIC

ECJ0EC1H101J

C248

4550006150

S.TANTALUM

ECST1CY105R

C304

4030017430

S.CERAMIC

ECJ0EC1H101J

C305

4030017420

S.CERAMIC

ECJ0EC1H470J

C306

4550006620

S.TANTALUM

ECST0JY226R

C308

4030009630

S.CERAMIC

C1608 JB 1H 822K-T

C310

4030017420

S.CERAMIC

ECJ0EC1H470J

C311

4550005980

S.TANTALUM

TEMSVA 1A 475M-8L

C312

4030017460

S.CERAMIC

ECJ0EB1E102K

C313

4030017420

S.CERAMIC

ECJ0EC1H470J

C314

4030011810

S.CERAMIC

C1608 JB 1A 224K-T

C315

4030017460

S.CERAMIC

ECJ0EB1E102K

C316

4550005980

S.TANTALUM

TEMSVA 1A 475M-8L

C317

4030016950

S.CERAMIC

ECJ0EB1A473K

C318

4030016960

S.CERAMIC

ECJ0EB1C183K

C319

4030017420

S.CERAMIC

ECJ0EC1H470J

C320

4030017460

S.CERAMIC

ECJ0EB1E102K

C321

4030017460

S.CERAMIC

ECJ0EB1E102K

C323

4030017460

S.CERAMIC

ECJ0EB1E102K

C324

4030017460

S.CERAMIC

ECJ0EB1E102K

C325

4030017460

S.CERAMIC

ECJ0EB1E102K

C326

4030017460

S.CERAMIC

ECJ0EB1E102K

C340

4030017460

S.CERAMIC

ECJ0EB1E102K

C341

4030017460

S.CERAMIC

ECJ0EB1E102K

C347

4550006320

S.TANTALUM

ECST0JY475R

C348

4550006620

S.TANTALUM

ECST0JY226R

C400

4030008680

S.CERAMIC

C2012 JF 1C 105Z-T

C401

4030008680

S.CERAMIC

C2012 JF 1C 105Z-T

C402

4030008680

S.CERAMIC

C2012 JF 1C 105Z-T

C403

4030008680

S.CERAMIC

C2012 JF 1C 105Z-T

C404

4030008680

S.CERAMIC

C2012 JF 1C 105Z-T

C405

4030008680

S.CERAMIC

C2012 JF 1C 105Z-T

C451

4030016790

S.CERAMIC

ECJ0EB1C103K

C452

4030016790

S.CERAMIC

ECJ0EB1C103K

C453

4030017460

S.CERAMIC

ECJ0EB1E102K

C454

4030016930

S.CERAMIC

ECJ0EB1A104K

C455

4030009630

S.CERAMIC

C1608 JB 1H 822K-T

C456

4550006620

S.TANTALUM

ECST0JY226R

C919

4030016790

S.CERAMIC

ECJ0EB1C103K

C920

4030016790

S.CERAMIC

ECJ0EB1C103K

J1

6510022470

S.CONNECTOR

40FLT-SM1-TB

DS1

5010000160

S.LED

LNJ310M6URA

DS2

5010000160

S.LED

LNJ310M6URA

DS3

5010000150

S.LED

LT1EP53A

DS4

5030001990

LCD

TTR5169 UPFDHW

DS5

5040002670

S.LED

CL-165HR/YG

DS6

5040002670

S.LED

CL-165HR/YG

DS7

5040002670

S.LED

CL-165HR/YG

DS8

5040002670

S.LED

CL-165HR/YG

DS9

5040002670

S.LED

CL-165HR/YG

DS10

5040002670

S.LED

CL-165HR/YG

DS11

5040002670

S.LED

CL-165HR/YG

DS12

5040002670

S.LED

CL-165HR/YG

MC1

7700002310

MICROPHONE

EM-140

S401

2230001090

S.SWITCH

EVQPSH02K

S402

2230001090

S.SWITCH

EVQPSH02K

SP1

2510000840

SPEAKER

CS028014-12

W1

8900010520

CABLE

OPC-1033

W2

7120000470

JUMPER

ERDS2T0

W3

7030000010

S.JUMPER

MCR10EZHJ JPW (000)

EP1

8930055190

LCD CONTACT

SRCN-2372-SP-N-W

EP2

0910054444

PCB

B 5736D

 

 

 

 

[LOGIC UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

EP3

6910012350

S.BEAD

MMZ1608Y 102BT

EP141

6910012350

S.BEAD

MMZ1608Y 102BT

EP142

6910012350

S.BEAD

MMZ1608Y 102BT

[VCO UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

IC1

1110004460

S.IC

µPB1509GV-E1

IC201

1130007610

S.IC

µPD3140GS-E1 (DS8)

Q1

1530003810

S.TRANSISTOR

2SC5008-T1

Q2

1530003810

S.TRANSISTOR

2SC5008-T1

Q3

1590001860

S.TRANSISTOR

UN9215 (TX)

Q4

1530003810

S.TRANSISTOR

2SC5008-T1

Q5

1530003810

S.TRANSISTOR

2SC5008-T1

Q7

1530003560

S.TRANSISTOR

2SC5195-T1

Q11

1530003310

S.TRANSISTOR

2SC5107-O (TE85R)

Q14

1590001660

S.TRANSISTOR

XP4312 (TX)

Q15

1590001470

S.TRANSISTOR

UN9213 (TX)

Q16

1530003810

S.TRANSISTOR

2SC5008-T1

Q206

1560000540

S.FET

2SK880-Y (TE85R)

Q207

1530003010

S.TRANSISTOR

2SC4117-GR (TE85R)

Q211

1530002600

S.TRANSISTOR

2SC4215-O (TE85R)

Q212

1530003810

S.TRANSISTOR

2SC5008-T1

D1

1720000790

S.VARICAP

HVC321B1TRF

D2

1790001260

S.DIODE

MA2S077-(TX)

D3

1720000790

S.VARICAP

HVC321B1TRF

D7

1750000800

S.DIODE

HVC136TRF

D8

1750000800

S.DIODE

HVC136TRF

D9

1750000800

S.DIODE

HVC136TRF

D10

1750000800

S.DIODE

HVC136TRF

L2

6200007760

S.COIL

LQW2BHN82NJ01L (LQN21A 82NJ04)

L3

6200004480

S.COIL

MLF1608D R82K-T

L4

6200010110

S.COIL

0.20-0.8-4TR 11N

L12

6200006980

S.COIL

ELJRE R10G-F

L13

6200007000

S.COIL

ELJRE 82NG-F

L201

6200003550

S.COIL

MLF1608A 4R7K-T

L202

6200003550

S.COIL

MLF1608A 4R7K-T

L203

6200006960

S.COIL

MLF1608A 2R7K-T

R1

7030005700

S.RESISTOR

ERJ2GEJ 274 X (270 kΩ )

R2

7030005120

S.RESISTOR

ERJ2GEJ 102 X (1 kΩ )

R3

7030009290

S.RESISTOR

ERJ2GEJ 562 X (5.6 kΩ )

R4

7030007270

S.RESISTOR

ERJ2GEJ 151 X (150 Ω )

R5

7030008400

S.RESISTOR

ERJ2GEJ 182 X (1.8 kΩ )

R6

7030009290

S.RESISTOR

ERJ2GEJ 562 X (5.6 kΩ )

R7

7030007270

S.RESISTOR

ERJ2GEJ 151 X (150 Ω )

R8

7030005300

S.RESISTOR

ERJ2GEJ 150 X (15 Ω )

R9

7030005700

S.RESISTOR

ERJ2GEJ 274 X (270 kΩ )

R10

7030004980

S.RESISTOR

ERJ2GEJ 101 X (100 Ω )

R11

7030005040

S.RESISTOR

ERJ2GEJ 472 X (4.7 kΩ )

R12

7030005710

S.RESISTOR

ERJ2GEJ 121 X (120 Ω )

R13

7030005120

S.RESISTOR

ERJ2GEJ 102 X (1 kΩ )

R14

7030005040

S.RESISTOR

ERJ2GEJ 472 X (4.7 kΩ )

R15

7030005710

S.RESISTOR

ERJ2GEJ 121 X (120 Ω )

R16

7030009320

S.RESISTOR

ERJ2GEJ 4R7 X (4.7 Ω )

R17

7030005060

S.RESISTOR

ERJ2GEJ 333 X (33 kΩ )

R18

7030004980

S.RESISTOR

ERJ2GEJ 101 X (100 Ω )

R19

7030005530

S.RESISTOR

ERJ2GEJ 100 X (10 Ω )

R33

7030005060

S.RESISTOR

ERJ2GEJ 333 X (33 kΩ )

R34

7030007270

S.RESISTOR

ERJ2GEJ 151 X (150 Ω )

R35

7030004970

S.RESISTOR

ERJ2GEJ 470 X (47 Ω )

R44

7030005120

S.RESISTOR

ERJ2GEJ 102 X (1 kΩ )

R45

7030005040

S.RESISTOR

ERJ2GEJ 472 X (4.7 kΩ )

R46

7030007570

S.RESISTOR

ERJ2GEJ 122X (1.2 kΩ )

R47

7030005040

S.RESISTOR

ERJ2GEJ 472 X (4.7 kΩ )

R48

7030004990

S.RESISTOR

ERJ2GEJ 221 X (220 Ω )

R49

7030008410

S.RESISTOR

ERJ2GEJ 392 X (3.9 kΩ )

R50

7030005040

S.RESISTOR

ERJ2GEJ 472 X (4.7 kΩ )

R51

7030007290

S.RESISTOR

ERJ2GEJ 222 X (2.2 kΩ )

S.=Surface mount

6 - 8

Image 39
Contents IC-t90a Sample Order IntroductionOrdering Parts Repair NotesTable of Contents Specifications GeneralTransmitter WFM ReceiverFrequency MHz WFMBottom view Inside ViewsLogic Unit Top viewAF Unit RF UnitTop view Bottom view Removing the rear panel Removing the AF unit Disassembly InstructionsReceiver Circuits Circuit Description4 1ST Mixer and 1ST if Circuits RF, AF and VCO Units 5 2ND if and Demodulator Circuits AF UnitRF Circuit AF Amplifier Circuit AF Unit Squelch Circuitaf and Logic Units2ND if and Demodulator Circuit Transmitter Circuits APC Circuit PLL CircuitsAPC Circuit RF Unit GeneralPLL Circuit VCO Divider Circuit VCO and RF UnitsVoltage Line Power Supply Circuits2 R3V Switch IC AF Unit IC51 Port AllocationsCPU Logic Unit IC1 SEG35 CtselDtcs LCDPreparation Adjustment ProceduresOperation on the Adjustment Mode Operation on the Output Power AdjustmentConnection JIGAD-92SMA Voltage Trimmer AdjustmentPLL Lock VCOL19 VCO UnitRF Unit L16 L456Frequency Adjustment Mode AdjustmentsReference DialAdjustment Mode Adjustments PH ch 53.900 MHz Transmitting 8V 145 MHz Displayed frequency Connect an amme 45 a R326 Logic UnitR325 R365Ctcss Detector CoilTracking L151 AF UnitCP0 IC151, pin 12 SD lineDisplayed frequency Connect a DC volt Maximum voltage Meter Adjustment Adjustment Condition OperationOrder Description Section Parts ListCoil Eljre 3N9Z-F Ceramic ECJ0EB1H681K Connector AXK6S30445P Ceramic ECJ0EC1H060C Encoder Trimmer Tantalum ECST1EY474R Ceramic ECJ0EC1H2R5B Mechanical Parts and Disassembly AccessoriesChassis Parts AF Unit VCO Unit Logic UnitRF Unit Chassis PartsName SEMI-CONDUCTOR InformationTransistors and Fets DiodesDUP Board LayoutsTOP View MC1 MicrophoneSQL PTT Logic unitBottom View SP1RF Unit RF unit AF Unit VCO UnitEXT.SP EXT.MICREMOTO S253S252 Logic Unit Block DiagramLoop LPF HPF Drive BPF ANT FIL AMP Chassis11 1 Logic Unit Voltage DiagramIC5 2SK3476 11 2 RF UnitBU4094BCFV 11 3 AF UnitURL 32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan