Icom IC-T90A manual Trimmer

Page 38

[LOGIC UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

R139

7030005530

S.RESISTOR

ERJ2GEJ 100 X (10 Ω )

R140

7030005040

S.RESISTOR

ERJ2GEJ 472 X (4.7 kΩ )

R141

7030007340

S.RESISTOR

ERJ2GEJ 153 X (15 kΩ )

R142

7030005830

S.RESISTOR

RR0510R-223-D (22 kΩ )

R143

7030005050

S.RESISTOR

ERJ2GEJ 103 X (10 kΩ )

R144

7030005040

S.RESISTOR

ERJ2GEJ 472 X (4.7 kΩ )

R145

7030005050

S.RESISTOR

ERJ2GEJ 103 X (10 kΩ )

R146

7030005050

S.RESISTOR

ERJ2GEJ 103 X (10 kΩ )

R147

7030005240

S.RESISTOR

ERJ2GEJ 473 X (47 kΩ )

R148

7030008270

S.RESISTOR

RR0510R-104-D (100 kΩ )

R149

7030005050

S.RESISTOR

ERJ2GEJ 103 X (10 kΩ )

R151

7030005120

S.RESISTOR

ERJ2GEJ 102 X (1 kΩ )

R152

7030005240

S.RESISTOR

ERJ2GEJ 473 X (47 kΩ )

R153

7030005050

S.RESISTOR

ERJ2GEJ 103 X (10 kΩ )

R154

7030005040

S.RESISTOR

ERJ2GEJ 472 X (4.7 kΩ )

R203

7030000240

S.RESISTOR

MCR10EZHJ 68 Ω (680)

R204

7030000240

S.RESISTOR

MCR10EZHJ 68 Ω (680)

R205

7030000240

S.RESISTOR

MCR10EZHJ 68 Ω (680)

R207

7030005160

S.RESISTOR

ERJ2GEJ 105 X (1 MΩ )

R208

7030005090

S.RESISTOR

ERJ2GEJ 104 X (100 kΩ )

R209

7030005120

S.RESISTOR

ERJ2GEJ 102 X (1 kΩ )

R210

7030008010

S.RESISTOR

ERJ2GEJ 123 X (12 kΩ )

R211

7030005050

S.RESISTOR

ERJ2GEJ 103 X (10 kΩ )

R241

7030005230

S.RESISTOR

ERJ2GEJ 334 X (330 kΩ )

R243

7030005080

S.RESISTOR

ERJ2GEJ 823 X (82 kΩ )

R244

7030005080

S.RESISTOR

ERJ2GEJ 823 X (82 kΩ )

R245

7030005080

S.RESISTOR

ERJ2GEJ 823 X (82 kΩ )

R246

7030005070

S.RESISTOR

ERJ2GEJ 683 X (68 kΩ )

R247

7030005240

S.RESISTOR

ERJ2GEJ 473 X (47 kΩ )

R248

7030005160

S.RESISTOR

ERJ2GEJ 105 X (1 MΩ )

R249

7030005100

S.RESISTOR

ERJ2GEJ 154 X (150 kΩ )

R301

7030009290

S.RESISTOR

ERJ2GEJ 562 X (5.6 kΩ )

R302

7030007280

S.RESISTOR

ERJ2GEJ 331 X (330 Ω )

R305

7030005290

S.RESISTOR

ERJ2GEJ 682 X (6.8 kΩ )

R306

7030007290

S.RESISTOR

ERJ2GEJ 222 X (2.2 kΩ )

R307

7030004980

S.RESISTOR

ERJ2GEJ 101 X (100 Ω )

R308

7030005110

S.RESISTOR

ERJ2GEJ 224 X (220 kΩ )

R309

7030005720

S.RESISTOR

ERJ2GEJ 563 X (56 kΩ )

R310

7030008051

S.RESISTOR

ERA3YKD 184V (180 kΩ )

R311

7030007300

S.RESISTOR

ERJ2GEJ 332 X (3.3 kΩ )

R312

7030005710

S.RESISTOR

ERJ2GEJ 121 X (120 Ω )

R313

7030007300

S.RESISTOR

ERJ2GEJ 332 X (3.3 kΩ )

R314

7030005000

S.RESISTOR

ERJ2GEJ 471 X (470 Ω )

R315

7030005461

S.RESISTOR

ERA3YKD 204V (200 kΩ )

R316

7030005000

S.RESISTOR

ERJ2GEJ 471 X (470 Ω )

R317

7030005110

S.RESISTOR

ERJ2GEJ 224 X (220 kΩ )

R318

7030005120

S.RESISTOR

ERJ2GEJ 102 X (1 kΩ )

R319

7030007290

S.RESISTOR

ERJ2GEJ 222 X (2.2 kΩ )

R320

7030005060

S.RESISTOR

ERJ2GEJ 333 X (33 kΩ )

R321

7030007340

S.RESISTOR

ERJ2GEJ 153 X (15 kΩ )

R324

7030009290

S.RESISTOR

ERJ2GEJ 562 X (5.6 kΩ )

R325

7310004660

S.TRIMMER

EVM-2WSX80 B54 (503)

R326

7310004660

S.TRIMMER

EVM-2WSX80 B54 (503)

R328

7030005170

S.RESISTOR

ERJ2GEJ 474 X (470 kΩ )

R329

7030005170

S.RESISTOR

ERJ2GEJ 474 X (470 kΩ )

R330

7030005120

S.RESISTOR

ERJ2GEJ 102 X (1 kΩ )

R331

7030005210

S.RESISTOR

ERJ2GEJ 822 X (8.2 kΩ )

R332

7030005080

S.RESISTOR

ERJ2GEJ 823 X (82 kΩ )

R333

7030005830

S.RESISTOR

RR0510R-223-D (22 kΩ )

R335

7030005120

S.RESISTOR

ERJ2GEJ 102 X (1 kΩ )

R336

7030005050

S.RESISTOR

ERJ2GEJ 103 X (10 kΩ )

R340

7030005070

S.RESISTOR

ERJ2GEJ 683 X (68 kΩ )

R360

7030005050

S.RESISTOR

ERJ2GEJ 103 X (10 kΩ )

R361

7030005240

S.RESISTOR

ERJ2GEJ 473 X (47 kΩ )

R363

7030005530

S.RESISTOR

ERJ2GEJ 100 X (10 Ω )

R364

7030005310

S.RESISTOR

ERJ2GEJ 124 X (120 kΩ )

R365

7310004660

S.TRIMMER

EVM-2WSX80 B54 (503)

R366

7310004660

S.TRIMMER

EVM-2WSX80 B54 (503)

R367

7030005170

S.RESISTOR

ERJ2GEJ 474 X (470 kΩ )

R368

7030005170

S.RESISTOR

ERJ2GEJ 474 X (470 kΩ )

R400

7030005090

S.RESISTOR

ERJ2GEJ 104 X (100 kΩ )

R451

7030008300

S.RESISTOR

ERJ2GEJ 184 X (180 kΩ )

R452

7030005600

S.RESISTOR

ERJ2GEJ 273 X (27 kΩ )

R453

7030005240

S.RESISTOR

ERJ2GEJ 473 X (47 kΩ )

R454

7030005120

S.RESISTOR

ERJ2GEJ 102 X (1 kΩ )

R455

7030005240

S.RESISTOR

ERJ2GEJ 473 X (47 kΩ )

R456

7030005240

S.RESISTOR

ERJ2GEJ 473 X (47 kΩ )

R457

7030005110

S.RESISTOR

ERJ2GEJ 224 X (220 kΩ )

R458

7030005240

S.RESISTOR

ERJ2GEJ 473 X (47 kΩ )

R459

7030005050

S.RESISTOR

ERJ2GEJ 103 X (10 kΩ )

R460

7030007290

S.RESISTOR

ERJ2GEJ 222 X (2.2 kΩ )

 

 

 

 

[LOGIC UNIT]

REF

ORDER

 

DESCRIPTION

NO.

NO.

 

 

 

 

 

 

 

C3

4030017640

S.CERAMIC

ECJ0EC1H150J

C4

4030017390

S.CERAMIC

ECJ0EC1H180J

C5

4030017460

S.CERAMIC

ECJ0EB1E102K

C7

4030017460

S.CERAMIC

ECJ0EB1E102K

C8

4030017330

S.CERAMIC

ECJ0EF1C104Z

C9

4030017460

S.CERAMIC

ECJ0EB1E102K

C10

4030016790

S.CERAMIC

ECJ0EB1C103K

C11

4030016790

S.CERAMIC

ECJ0EB1C103K

C12

4030016790

S.CERAMIC

ECJ0EB1C103K

C13

4030017460

S.CERAMIC

ECJ0EB1E102K

C14

4550006780

S.TANTALUM

TEMSVB2 0J 476M-8R

C15

4030017440

S.CERAMIC

ECJ0EC1H221J

C16

4030017780

S.CERAMIC

ECJ0EB1E472K

C17

4030017760

S.CERAMIC

ECJ0EB1H222K

C20

4030017400

S.CERAMIC

ECJ0EC1H220J

C23

4030017500

S.CERAMIC

ECJ0EC1H560J

C24

4030017420

S.CERAMIC

ECJ0EC1H470J

C25

4030017460

S.CERAMIC

ECJ0EB1E102K

C26

4030017460

S.CERAMIC

ECJ0EB1E102K

C27

4030017420

S.CERAMIC

ECJ0EC1H470J

C29

4030017420

S.CERAMIC

ECJ0EC1H470J

C30

4030017420

S.CERAMIC

ECJ0EC1H470J

C32

4030017460

S.CERAMIC

ECJ0EB1E102K

C33

4030017420

S.CERAMIC

ECJ0EC1H470J

C34

4030017460

S.CERAMIC

ECJ0EB1E102K

C35

4030017420

S.CERAMIC

ECJ0EC1H470J

C36

4030017420

S.CERAMIC

ECJ0EC1H470J

C37

4030017420

S.CERAMIC

ECJ0EC1H470J

C38

4030016790

S.CERAMIC

ECJ0EB1C103K

C39

4030017420

S.CERAMIC

ECJ0EC1H470J

C40

4030017390

S.CERAMIC

ECJ0EC1H180J

C41

4030017460

S.CERAMIC

ECJ0EB1E102K

C43

4030017460

S.CERAMIC

ECJ0EB1E102K

C44

4030017460

S.CERAMIC

ECJ0EB1E102K

C45

4030017460

S.CERAMIC

ECJ0EB1E102K

C46

4030017460

S.CERAMIC

ECJ0EB1E102K

C47

4030017460

S.CERAMIC

ECJ0EB1E102K

C55

4030017460

S.CERAMIC

ECJ0EB1E102K

C57

4030017460

S.CERAMIC

ECJ0EB1E102K

C75

4550002980

S.TANTALUM

TEMSVA 1C 225M-8L

C76

4030017460

S.CERAMIC

ECJ0EB1E102K

C80

4550006960

S.TANTALUM

TEMSVB2 0G 107M8R

C81

4030017460

S.CERAMIC

ECJ0EB1E102K

C88

4030017510

S.CERAMIC

ECJ0EC1H680J

C89

4030017460

S.CERAMIC

ECJ0EB1E102K

C90

4030017460

S.CERAMIC

ECJ0EB1E102K

C91

4030017460

S.CERAMIC

ECJ0EB1E102K

C92

4030017460

S.CERAMIC

ECJ0EB1E102K

C93

4030017460

S.CERAMIC

ECJ0EB1E102K

C94

4030017330

S.CERAMIC

ECJ0EF1C104Z

C95

4030008680

S.CERAMIC

C2012 JF 1C 105Z-T

C96

4030008680

S.CERAMIC

C2012 JF 1C 105Z-T

C97

4550006640

S.TANTALUM

ECST1DY225R

C98

4030017330

S.CERAMIC

ECJ0EF1C104Z

C99

4030008680

S.CERAMIC

C2012 JF 1C 105Z-T

C101

4030017460

S.CERAMIC

ECJ0EB1E102K

C102

4030017460

S.CERAMIC

ECJ0EB1E102K

C103

4030017460

S.CERAMIC

ECJ0EB1E102K

C138

4030017260

S.CERAMIC

C2012 JB 0J 475KT

C139

4030017460

S.CERAMIC

ECJ0EB1E102K

C140

4030017330

S.CERAMIC

ECJ0EF1C104Z

C141

4030017460

S.CERAMIC

ECJ0EB1E102K

C142

4550006780

S.TANTALUM

TEMSVB2 0J 476M-8R

C143

4030017460

S.CERAMIC

ECJ0EB1E102K

C145

4030017330

S.CERAMIC

ECJ0EF1C104Z

C146

4030017330

S.CERAMIC

ECJ0EF1C104Z

C147

4550006730

S.TANTALUM

TEMSVB2 0J 226M-8L

C148

4030017460

S.CERAMIC

ECJ0EB1E102K

C149

4550006780

S.TANTALUM

TEMSVB2 0J 476M-8R

C150

4030016790

S.CERAMIC

ECJ0EB1C103K

C151

4030017460

S.CERAMIC

ECJ0EB1E102K

C152

4030016790

S.CERAMIC

ECJ0EB1C103K

C153

4030017420

S.CERAMIC

ECJ0EC1H470J

C154

4030017460

S.CERAMIC

ECJ0EB1E102K

C162

4030017460

S.CERAMIC

ECJ0EB1E102K

C198

4030017460

S.CERAMIC

ECJ0EB1E102K

C199

4030017460

S.CERAMIC

ECJ0EB1E102K

C200

4030017460

S.CERAMIC

ECJ0EB1E102K

C205

4550006210

S.TANTALUM

ECST1CX106R

C207

4030011810

S.CERAMIC

C1608 JB 1A 224K-T

C208

4030017460

S.CERAMIC

ECJ0EB1E102K

C209

4030017460

S.CERAMIC

ECJ0EB1E102K

 

 

 

 

S.=Surface mount

6 - 7

Page 37 Page 39
Image 38
Page 37 Page 39
Contents IC-t90a Repair Notes IntroductionOrdering Parts Sample OrderTable of Contents Transmitter SpecificationsGeneral WFM ReceiverFrequency MHz WFMTop view Inside ViewsLogic Unit Bottom viewTop view Bottom view AF UnitRF Unit Disassembly Instructions Removing the rear panel Removing the AF unitCircuit Description Receiver CircuitsRF Circuit 4 1ST Mixer and 1ST if Circuits RF, AF and VCO Units5 2ND if and Demodulator Circuits AF Unit 2ND if and Demodulator Circuit AF Amplifier Circuit AF UnitSquelch Circuitaf and Logic Units 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 PreparationAD-92SMA ConnectionJIG 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 Tracking DetectorCoil 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 Chassis Parts Mechanical Parts and DisassemblyAccessories 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 EXT.SP EXT.MICREMOTO AF UnitVCO Unit 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
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