Icom IC-4008MKII service manual PSC Batt MOD VOL GND

Page 24

R58

IC9

to RF unit J2

113

J4

UNLK

CK

DATA

STB

SQL

SENS

AF

PSC

BATT

MOD

T+3

VOL

R+3

GND

214

R88

R86

J3

 

 

 

 

Q23

C21

 

 

R54

C47

C59

C72

 

J1

R87

R106

C82

Q10

R301

 

Q5

Q44

J4

IC3

R68

R69

 

 

 

 

 

 

C73

C6

C29

R30

 

R39

C1

W1

R64

R65

R66

C86

R112

S1

R81

R6

C83

R51

R52

C93

C98

IC2

C24

R7

R53

C85

 

W4

 

 

 

R2

R108

Q1

R4

R40

 

 

R5

 

R105

R32

 

Q2

 

C28

R102

 

 

R33

 

C27

 

 

 

 

Q29

 

C91

 

 

C11

 

C10

 

 

R14

 

 

 

 

R60

 

R99

 

R100

 

R101

R34

C26

R35

C40

R95

Q12

IC1

C46

 

 

 

 

R63

 

R72

 

 

 

 

C45

 

 

 

 

 

 

 

 

 

 

 

R79

 

 

 

 

C61

R94

C56

C54

R103

C51

 

R97

 

C87

 

 

 

 

 

 

R57

 

R96

 

 

 

R70

R71

R67

 

 

 

 

 

R62

C92

 

 

 

 

 

 

 

 

 

 

 

C94

 

 

 

X1

9 - 4

Image 24
Contents UHF FM Transceiver LPD FM Transceiver Introduction Ordering PartsRepair Notes Table of Contents Section Specifications ITA, ITA-1 CSA, CSA-1Channel Frequency List Ctcss Frequency ListInside Views Main UnitRF Unit Disasembly Instructions Removing the Rear PanelRemoving the Main Unit Removing the RF UnitAntenna Switching Circuit RF Unit Circuit DescriptionReceiver Circuits RF Circuit RF UnitTransmitter Circuits PLL Circuits RF UnitPower Supply Circuits Voltage Line Port AllocationsCPU Main unit IC1 Section Adjustment Procedures Entering the Adjustment ModePreparation Required Test EquipmentAdjustment DeviationC63 R206R50 TestSection Parts List Order DescriptionRF Board Coil Eljre 18NG-F C211 4030006860 Mechanical Parts and Disassembly AccessoriesCabinet Parts Chassis Parts Unit abbreviation C Chassis PARTS, RF RF UNIT, M Main Unit SEMI-CONDUCTOR Information Transistor and FET’SDiodes Board Layouts Main UnitTOP 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