Icom IC-F21S service manual SEMI-CONDUCTOR Information, Transistor and FET’S, Diodes

Page 25

SECTION 8 SEMI-CONDUCTOR INFORMATION

•TRANSISTOR AND FET’S

2SA1577 Q

2SB1132 R

2SC3585 R44

 

2SC4116 GR

2SC4215 O

(Symbol: HQ)

(Symbol: BARB)

(Symbol: R44)

 

(Symbol: LG)

(Symbol: QO)

 

B

 

 

C

 

B

B

B

B

 

C

C

 

 

C

C

E

 

 

 

E

 

E

 

C E

E

E

 

B

 

 

 

 

 

 

 

2SC5085 Y

2SC5107 O

2SK880 Y

2SK1829

 

 

2SK2973

 

 

(Symbol: MCY)

(Symbol: MFO)

(Symbol: XY)

(Symbol: K1)

 

 

(Symbol: K1)

 

 

B

 

 

 

 

 

 

C

B

 

 

 

 

 

 

C

S

 

 

 

 

 

 

G

E

 

 

 

 

 

 

B

G

 

 

 

 

 

 

 

 

S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E

 

 

 

 

 

 

E

 

 

 

 

 

 

D

 

 

 

 

 

 

C

 

 

 

 

 

 

 

E

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2SK2974

3SK272

 

3SK293

 

DTA144 EU

 

DTC144 EU

(Symbol: K2974)

(Symbol: K)

 

(Symbol: UF)

 

(Symbol: 16)

 

(Symbol: 26)

D

 

 

 

 

B

 

 

 

G1

S

D

G2

 

B

 

 

 

 

S

 

 

 

 

C

C

G

G2

D

S

G1

E

 

E

 

 

 

 

 

 

 

(top view)

 

 

 

 

 

 

 

DTC144 TU

UN911 H

 

XP1213

 

XP1214

 

XP4216

(Symbol: 06)

(Symbol: 6P)

 

(Symbol: 9L)

 

(Symbol: 9H)

 

(Symbol: 8U)

B

B

 

B1

C1

B1

C1

 

 

C

C

E1

 

E1

 

 

E

E

 

B2

C2

B2

C2

 

XP6501 AB

 

 

 

 

 

 

 

(Symbol: 5N)

 

 

 

 

 

 

 

E1

C1

 

 

 

 

 

 

E2

B1

 

 

 

 

 

 

B2

C2

 

 

 

 

 

 

• DIODES

 

 

 

 

1SV307

HVU350 B

MA2S111

MA368

MA77

(Symbol: TX)

(Symbol: 4)

(Symbol: A)

(Symbol: 6L)

(Symbol: 4B)

A

C

C

A

A

C

RB706F-40

(Symbol: 3J)

HVC362

(Symbol: V2)

8 - 1

Page 24 Page 26
Image 25
Page 24 Page 26
Contents UHF FM Transceivers Ordering Parts IntroductionRepair Notes Table of Contents ‘ General Specifications‘ Transmitter ‘ ReceiverMain Unit TOP View Inside ViewsBottom View Removing the Chassis Disassembly InstructionsRemoving the Main Unit Receiver Circuits Circuit DescriptionTransmitter Circuits General PLL CircuitVCO Circuit PLL CircuitPort Allocations Power Supply Circuits Voltage LinePin Port Description Number 3 D/A Convertor IC IC9 Output Expander IC IC15Preparation Adjustment ProceduresJIG cable Screen display exampeSPE GNDDC Power Supply GND DC power cable connectionsConnection PLL Lock PLL AdjustmentMain VoltageSoftware Adjustment Squelch SensitivityLevel SQLUnit Section Parts ListMain Unit Coil Eljfc R68M-F Array Electrolytic ECEV1CA470SP Connector Accessories Mechanical Parts and DisassemblyChassis Parts Screw abbreviations B0, BT Self-tappingIC-F21S Transistor and FET’S SEMI-CONDUCTOR InformationDiodes Main Unit Board LayoutsIC6 FT1TOP View SW-A Unit SW-A and SW-B UnitsSW-B Unit CBI0 CBI1 CBI2 CBI3 Bottom View SW-A UnitGND Tled Rled VCC Volin Volout Disassembly Information Parts ListBC-146 Optional Desktop Charger Information Charge UnitBoard Layout Voltage DiagramSW-A/SW-B Unit S1 Block Diagram2SC4215 O Voltage DiagramDTC144EU Section Voltage Diagram Q1 XP4216 SW-A UnitPage 32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan
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