Icom IC-T90A manual SEMI-CONDUCTOR Information, Transistors and Fets, Diodes, Name, Inside View

Page 43

SECTION 8 SEMI-CONDUCTOR INFORMATION

8 - 1 TRANSISTORS AND FETS

NAME

SYMBOL

INSIDE VIEW

C

2SA1576 S

FS

2SA1588-GR

ZG

2SB1462-R

AR

E

B

C

2SB1132 R

BARB

B C

E

C

B

E

2SB1201-S-TL

B1201

B

C

E

2SC4116-GR

LG

2SC4117-GR

DG

2SC4215-O

QO

2SC4403-3-TL

LY3

C

2SC4406-4-TL

JT

2SC5006-T1

24

2SC5008-T1

44

B

E

2SC5107-O

MFO

2SC5195-T1

88

2SD2216-S

Y

B

E

2SC5289-T1

T90

E

C

E

B

2SC5508-T2

T79

2SC5624VH-TL

VH-

C

E

G

2SJ364-Q

4MQ

S

D

G

2SK880-Y

XY

S

D

NAME	SYMBOL	INSIDE VIEW
			S
2SK3475	WB
		G	S	D
			S
2SK3476	TUCF	G		D
		G		D
		G2		G1
3SK320	U7
		D		S
			C
UN9113	6C
		B		E
			C
UN9115	6E
		B		E
			C
UN9210	8L
		B		E
UN9211	8A		C
UN9211	8A
UN9213	8C
UN9214	8A
UN9215	8E	B		E
		B		E
		C1		C2
XP1115	9L
		B1	E	B2
		C1		C2
XP1214	9H
		B1	E1	B2
		C1		C2
XP1501-AB	5R
		B1	E	B2

NAME	SYMBOL	INSIDE VIEW
		C1	B2		E2
XP4214	BR
		E1	B1		C2
		C1		B2	E2
XP4312	7T
		E1	B1		C2
		C1		B2	E2
XP4315	CB
XP4316	7U
		E1		B1	C2
		C2		B1	E1
XP4601	5C
		E2		B2	C1
		C2		E1	C1
XP5601-AB	4N
		E2		B2	B1
		C1		B1	C2
XP6401	5O
		E1		E2	B2
		C1		B1	C2
XP6501-AB	5N
		E1		E2	B2
		G	S	S	S
HAT1023R-EL	1023
		D	D	D	D

8 - 2 DIODES

NAME

SYMBOL

INSIDE VIEW

1SS362

C3

1SS372

N9

MA133

MP

A

C

C

1SS364

BF

MA132WK

MU

A1

A2

1SV271

TG

1SV290

TJ

1SV308

TX

HVC132

P2

HVC136 TRF

P6

HVC321 B1 TRF

V8

A

C

HVC376 B TRF

B9

MA2S077

S

MA2S111

A

MA2S728

B

RB060L-40

36

1SV307

TX

A

C

C

MA132HK

M3N

A

C

MA132K	7N
SB07-03C-TB	J

A

C1 C2 C3

MA6S121

M2D

A1 A2 A3

8 - 1

Image 43

Contents IC-t90a Sample Order IntroductionOrdering Parts Repair NotesTable of Contents General SpecificationsTransmitter WFM ReceiverFrequency MHz WFMBottom view Inside ViewsLogic Unit Top viewRF Unit AF UnitTop view Bottom view Removing the rear panel Removing the AF unit Disassembly InstructionsReceiver Circuits Circuit Description5 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 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 AdjustmentJIG ConnectionAD-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 Coil DetectorTracking 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 Accessories Mechanical Parts and DisassemblyChassis 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 VCO Unit AF 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