Icom IC-4008MKII service manual R58, Bottom View IC-4008A

Page 22

BOTTOM VIEW (IC-4008A)

to RF unit J2

113

R58

R54

C47

IC9

Q10

Q5

J4

UNLK

CK

DATA

STB

SQL

SENS

AF

 

 

 

 

 

 

 

PSC

BATT

MOD

T+3

VOL

R+3

GND

214

R88

R86

Q23

C21

 

 

C59

C72

 

J1

R87

R106

C82

 

 

C44

J4

 

IC3

 

 

C86

R112

 

 

 

J3

R68

R69

S1

 

C73

C6

C29

R30

 

R6

 

C83

IC2

R51

 

R52

 

C93

C24

C98

R7

R53

 

 

R39

W1

R64

R65

 

C1

 

 

 

 

 

C85

W4

 

R60

R2

R108

Q1

 

R99

 

R40

 

 

R100

R4

 

 

R101

 

 

 

 

R5

 

R105

R32

 

Q2

C28

R34

C26

 

 

R102

R33

 

 

C27

R35

 

R66

Q12

IC1

C61

R103 C51 R97

R57

R96

R81

 

 

C46

 

 

R63

 

R72

 

 

C45

 

X1

 

 

R79

 

R94

C56

C54

 

C87

 

 

Q29

C91

 

C11

C10

R14

 

C40

R95

R70

R71

R67

 

 

R62

C92

C94

9 - 2

Image 22
Contents UHF FM Transceiver LPD FM Transceiver Ordering Parts IntroductionRepair Notes Table of Contents Section Specifications ITA, ITA-1 CSA, CSA-1Channel Frequency List Ctcss Frequency ListMain Unit Inside ViewsRF Unit Removing the Main Unit Disasembly InstructionsRemoving the Rear Panel Removing the RF UnitReceiver Circuits Antenna Switching Circuit RF UnitCircuit Description RF Circuit RF UnitTransmitter Circuits PLL Circuits RF UnitPort Allocations Power Supply Circuits Voltage LineCPU Main unit IC1 Preparation Section Adjustment ProceduresEntering the Adjustment Mode Required Test EquipmentAdjustment DeviationR50 C63R206 TestSection Parts List Order DescriptionRF Board Coil Eljre 18NG-F C211 4030006860 Accessories Mechanical Parts and DisassemblyCabinet Parts Chassis Parts Unit abbreviation C Chassis PARTS, RF RF UNIT, M Main Unit Transistor and FET’S SEMI-CONDUCTOR InformationDiodes Main Unit Board LayoutsTOP View IC-4008A R58 Bottom View IC-4008AC55 C17 R23 C18 C52 PSC Batt MOD VOL GND RF Unit TOP ViewFI3 Bottom ViewBlock Diagram IC1Voltage Diagram DTA144EURF Unit 16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan 16, Kamihigashi, Hirano-ku, Osaka, 547-0002, Japan