Icom IC-T90A manual Ceramic ECJ0EB1H681K

Page 34

[RF UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

C60

4030017510

S.CERAMIC

ECJ0EC1H680J

C62

4030016790

S.CERAMIC

ECJ0EB1C103K

C64

4030017330

S.CERAMIC

ECJ0EF1C104Z

C65

4030017640

S.CERAMIC

ECJ0EC1H150J

C66

4030017460

S.CERAMIC

ECJ0EB1E102K

C67

4030016790

S.CERAMIC

ECJ0EB1C103K

C68

4030017660

S.CERAMIC

ECJ0EC1H330J

C69

4030017460

S.CERAMIC

ECJ0EB1E102K

C70

4030016790

S.CERAMIC

ECJ0EB1C103K

C76

4030016790

S.CERAMIC

ECJ0EB1C103K

C77

4030017630

S.CERAMIC

ECJ0EC1H120J

C78

4030017330

S.CERAMIC

ECJ0EF1C104Z

C79

4030017460

S.CERAMIC

ECJ0EB1E102K

C80

4030017330

S.CERAMIC

ECJ0EF1C104Z

C81

4030016790

S.CERAMIC

ECJ0EB1C103K

C82

4030017460

S.CERAMIC

ECJ0EB1E102K

C83

4030017460

S.CERAMIC

ECJ0EB1E102K

C84

4030017460

S.CERAMIC

ECJ0EB1E102K

C85

4030017460

S.CERAMIC

ECJ0EB1E102K

C87

4030016790

S.CERAMIC

ECJ0EB1C103K

C88

4030017460

S.CERAMIC

ECJ0EB1E102K

C89

4030017330

S.CERAMIC

ECJ0EF1C104Z

C91

4030016790

S.CERAMIC

ECJ0EB1C103K

C92

4030017460

S.CERAMIC

ECJ0EB1E102K

C93

4030016790

S.CERAMIC

ECJ0EB1C103K

C94

4030016790

S.CERAMIC

ECJ0EB1C103K

C95

4030016790

S.CERAMIC

ECJ0EB1C103K

C98

4030018220

S.CERAMIC

ERA21B6C2D300JD01L (GRH708 CH)

C101

4030017330

S.CERAMIC

ECJ0EF1C104Z

C102

4030017330

S.CERAMIC

ECJ0EF1C104Z

C103

4030017330

S.CERAMIC

ECJ0EF1C104Z

C104

4030017330

S.CERAMIC

ECJ0EF1C104Z

C105

4030017460

S.CERAMIC

ECJ0EB1E102K

C106

4030017460

S.CERAMIC

ECJ0EB1E102K

C107

4030017460

S.CERAMIC

ECJ0EB1E102K

C108

4030017460

S.CERAMIC

ECJ0EB1E102K

C109

4030017460

S.CERAMIC

ECJ0EB1E102K

C110

4030017330

S.CERAMIC

ECJ0EF1C104Z

C111

4030017330

S.CERAMIC

ECJ0EF1C104Z

C112

4030017460

S.CERAMIC

ECJ0EB1E102K

C114

4030017460

S.CERAMIC

ECJ0EB1E102K

C115

4030016790

S.CERAMIC

ECJ0EB1C103K

C116

4030017460

S.CERAMIC

ECJ0EB1E102K

C204

4030017460

S.CERAMIC

ECJ0EB1E102K

C205

4030017460

S.CERAMIC

ECJ0EB1E102K

C220

4030017460

S.CERAMIC

ECJ0EB1E102K

C252

4030017460

S.CERAMIC

ECJ0EB1E102K

C253

4550007000

S.TANTALUM

ECST1VY105R

C254

4030017460

S.CERAMIC

ECJ0EB1E102K

C255

4030017460

S.CERAMIC

ECJ0EB1E102K

C256

4030017460

S.CERAMIC

ECJ0EB1E102K

C257

4030016790

S.CERAMIC

ECJ0EB1C103K

C258

4030017330

S.CERAMIC

ECJ0EF1C104Z

C259

4030017460

S.CERAMIC

ECJ0EB1E102K

C301

4030018100

S.CERAMIC

ECJ0EB1H681K

C302

4030016930

S.CERAMIC

ECJ0EB1A104K

C303

4030018100

S.CERAMIC

ECJ0EB1H681K

C304

4030017680

S.CERAMIC

ECJ0EC1H820J

C305

4030017660

S.CERAMIC

ECJ0EC1H330J

C306

4030017690

S.CERAMIC

ECJ0EC1H121J

C307

4030016930

S.CERAMIC

ECJ0EB1A104K

C308

4030016930

S.CERAMIC

ECJ0EB1A104K

C309

4030016930

S.CERAMIC

ECJ0EB1A104K

C310

4030016930

S.CERAMIC

ECJ0EB1A104K

C311

4030017460

S.CERAMIC

ECJ0EB1E102K

C314

4030016930

S.CERAMIC

ECJ0EB1A104K

C315

4030016930

S.CERAMIC

ECJ0EB1A104K

C316

4030016930

S.CERAMIC

ECJ0EB1A104K

C317

4030017640

S.CERAMIC

ECJ0EC1H150J

C318

4030016790

S.CERAMIC

ECJ0EB1C103K

C319

4030017460

S.CERAMIC

ECJ0EB1E102K

C320

4030017620

S.CERAMIC

ECJ0EC1H100C

C321

4030016790

S.CERAMIC

ECJ0EB1C103K

C323

4030017610

S.CERAMIC

ECJ0EC1H090C

C324

4030016790

S.CERAMIC

ECJ0EB1C103K

C325

4030017460

S.CERAMIC

ECJ0EB1E102K

C331

4030017630

S.CERAMIC

ECJ0EC1H120J

C332

4030016790

S.CERAMIC

ECJ0EB1C103K

C333

4030016930

S.CERAMIC

ECJ0EB1A104K

C351

4030017460

S.CERAMIC

ECJ0EB1E102K

C352

4030017380

S.CERAMIC

ECJ0EC1H050B

C353

4030017460

S.CERAMIC

ECJ0EB1E102K

 

 

 

 

[RF UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

C354

4030017460

S.CERAMIC

ECJ0EB1E102K

C355

4030017460

S.CERAMIC

ECJ0EB1E102K

C356

4030017460

S.CERAMIC

ECJ0EB1E102K

C357

4030017460

S.CERAMIC

ECJ0EB1E102K

C358

4030017460

S.CERAMIC

ECJ0EB1E102K

C359

4030017440

S.CERAMIC

ECJ0EC1H221J

C360

4030017590

S.CERAMIC

ECJ0EC1H070C

C361

4030017620

S.CERAMIC

ECJ0EC1H100C

C362

4030017430

S.CERAMIC

ECJ0EC1H101J

C363

4030017460

S.CERAMIC

ECJ0EB1E102K

C364

4030017640

S.CERAMIC

ECJ0EC1H150J

C365

4030017460

S.CERAMIC

ECJ0EB1E102K

C367

4030017570

S.CERAMIC

ECJ0EC1H040B

C368

4030016790

S.CERAMIC

ECJ0EB1C103K

C369

4030017460

S.CERAMIC

ECJ0EB1E102K

C370

4030017610

S.CERAMIC

ECJ0EC1H090C

C371

4030017460

S.CERAMIC

ECJ0EB1E102K

C372

4030017440

S.CERAMIC

ECJ0EC1H221J

C373

4030017460

S.CERAMIC

ECJ0EB1E102K

C374

4030017460

S.CERAMIC

ECJ0EB1E102K

C375

4030017520

S.CERAMIC

ECJ0EC1H0R3B

C376

4030017460

S.CERAMIC

ECJ0EB1E102K

C401

4030017400

S.CERAMIC

ECJ0EC1H220J

C402

4030017350

S.CERAMIC

ECJ0EC1H020B

C403

4030017460

S.CERAMIC

ECJ0EB1E102K

C404

4030017570

S.CERAMIC

ECJ0EC1H040B

C405

4030017460

S.CERAMIC

ECJ0EB1E102K

C406

4030017430

S.CERAMIC

ECJ0EC1H101J

C407

4030017460

S.CERAMIC

ECJ0EB1E102K

C408

4030017460

S.CERAMIC

ECJ0EB1E102K

C409

4030017710

S.CERAMIC

ECJ0EC1H181J

C410

4030017460

S.CERAMIC

ECJ0EB1E102K

C411

4030017360

S.CERAMIC

ECJ0EC1H030B

C412

4030017460

S.CERAMIC

ECJ0EB1E102K

C413

4030017460

S.CERAMIC

ECJ0EB1E102K

C414

4030017530

S.CERAMIC

ECJ0EC1H0R5B

C415

4030017430

S.CERAMIC

ECJ0EC1H101J

C416

4030017620

S.CERAMIC

ECJ0EC1H100C

C417

4030017460

S.CERAMIC

ECJ0EB1E102K

C419

4030017460

S.CERAMIC

ECJ0EB1E102K

C420

4030016790

S.CERAMIC

ECJ0EB1C103K

C421

4030016790

S.CERAMIC

ECJ0EB1C103K

C451

4030017430

S.CERAMIC

ECJ0EC1H101J

C452

4030017570

S.CERAMIC

ECJ0EC1H040B

C453

4030017510

S.CERAMIC

ECJ0EC1H680J

C454

4030017380

S.CERAMIC

ECJ0EC1H050B

C455

4030017460

S.CERAMIC

ECJ0EB1E102K

C456

4030017510

S.CERAMIC

ECJ0EC1H680J

C457

4030017460

S.CERAMIC

ECJ0EB1E102K

C458

4030017570

S.CERAMIC

ECJ0EC1H040B

C460

4030017340

S.CERAMIC

ECJ0EC1H010B

C461

4030017460

S.CERAMIC

ECJ0EB1E102K

C462

4030017570

S.CERAMIC

ECJ0EC1H040B

C463

4030017680

S.CERAMIC

ECJ0EC1H820J

C464

4030017430

S.CERAMIC

ECJ0EC1H101J

C465

4030016790

S.CERAMIC

ECJ0EB1C103K

C466

4030017460

S.CERAMIC

ECJ0EB1E102K

C467

4030017460

S.CERAMIC

ECJ0EB1E102K

C468

4030017460

S.CERAMIC

ECJ0EB1E102K

C469

4030017460

S.CERAMIC

ECJ0EB1E102K

C470

4030017460

S.CERAMIC

ECJ0EB1E102K

C472

4030017730

S.CERAMIC

ECJ0EB1E471K

C473

4030016790

S.CERAMIC

ECJ0EB1C103K

C474

4030017460

S.CERAMIC

ECJ0EB1E102K

C476

4030017460

S.CERAMIC

ECJ0EB1E102K

C477

4030017460

S.CERAMIC

ECJ0EB1E102K

C478

4030016790

S.CERAMIC

ECJ0EB1C103K

C479

4030016790

S.CERAMIC

ECJ0EB1C103K

C480

4030017690

S.CERAMIC

ECJ0EC1H121J

C481

4030017640

S.CERAMIC

ECJ0EC1H150J

C482

4030017510

S.CERAMIC

ECJ0EC1H680J

C483

4030017630

S.CERAMIC

ECJ0EC1H120J

C484

4030017350

S.CERAMIC

ECJ0EC1H020B

C485

4030017650

S.CERAMIC

ECJ0EC1H270J

C486

4030017570

S.CERAMIC

ECJ0EC1H040B

C487

4030017570

S.CERAMIC

ECJ0EC1H040B

C488

4030017460

S.CERAMIC

ECJ0EB1E102K

C489

4030016790

S.CERAMIC

ECJ0EB1C103K

C490

4030017460

S.CERAMIC

ECJ0EB1E102K

C492

4030017400

S.CERAMIC

ECJ0EC1H220J

 

 

 

 

S.=Surface mount

6 - 3

Image 34
Contents IC-t90a Repair Notes IntroductionOrdering Parts Sample OrderTable of Contents General SpecificationsTransmitter WFM ReceiverFrequency MHz WFMTop view Inside ViewsLogic Unit Bottom viewRF Unit AF UnitTop view Bottom view Disassembly Instructions Removing the rear panel Removing the AF unitCircuit Description Receiver Circuits5 2ND if and Demodulator Circuits AF Unit 4 1ST Mixer and 1ST if Circuits RF, AF and VCO UnitsRF Circuit Squelch Circuitaf and Logic Units AF Amplifier Circuit AF Unit2ND if and Demodulator Circuit Transmitter Circuits General PLL CircuitsAPC Circuit RF Unit APC CircuitVCO Divider Circuit VCO and RF Units PLL CircuitPort Allocations Power Supply Circuits2 R3V Switch IC AF Unit IC51 Voltage LineCPU Logic Unit IC1 LCD CtselDtcs SEG35Operation on the Output Power Adjustment Adjustment ProceduresOperation on the Adjustment Mode PreparationJIG ConnectionAD-92SMA VCO Trimmer AdjustmentPLL Lock VoltageL16 L456 VCO UnitRF Unit L19Dial Adjustment Mode AdjustmentsReference FrequencyAdjustment Mode Adjustments PH ch 53.900 MHz Transmitting 8V 145 MHz Displayed frequency Connect an amme 45 a R365 Logic UnitR325 R326Ctcss Coil DetectorTracking IC151, pin 12 SD line AF UnitCP0 L151Displayed frequency Connect a DC volt Maximum voltage Adjustment Adjustment Condition Operation MeterSection Parts List Order DescriptionCoil Eljre 3N9Z-F Ceramic ECJ0EB1H681K Connector AXK6S30445P Ceramic ECJ0EC1H060C Encoder Trimmer Tantalum ECST1EY474R Ceramic ECJ0EC1H2R5B Accessories Mechanical Parts and DisassemblyChassis Parts Chassis Parts Logic UnitRF Unit AF Unit VCO UnitDiodes SEMI-CONDUCTOR InformationTransistors and Fets NameMC1 Microphone Board LayoutsTOP View DUPSP1 Logic unitBottom View SQL PTTRF Unit RF unit VCO Unit AF UnitEXT.SP EXT.MICREMOTO S253S252 Block Diagram Logic UnitChassis Loop LPF HPF Drive BPF ANT FIL AMPVoltage Diagram 11 1 Logic UnitIC5 11 2 RF Unit 2SK347611 3 AF Unit BU4094BCFVURL 32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan