Icom IC-4008MKII service manual C55 C17 R23 C18 C52

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R98

C53

C60

R76 R74

C20

D2

C96

C97

Q11

R26

Q14

R114

Q27

 

D101

R302

DS1

R90

C71

D303

D5

C95

 

R22

R61

 

C15

 

R49

C42

 

C9

R89

 

 

 

C75

C74

 

Q28

W3

R27

 

R25

R24

C50

R56

R55

C63

IC5

C81

DS2

C55

C17 R23

C18

C52

C48

C49

C57

IC6

 

C88

Q18

R80

 

R78

C65

C67

C62

Q25

R77

D4

 

 

C64

C80

W7

C89

 

 

 

R42

 

 

C35

R43

 

 

 

 

 

 

R41

C90

R12

 

R37

 

C32

 

 

 

 

 

 

R38

C8 Q7

MC1

R46

C31

C36

R36

R45

C34

 

C7

R13

 

 

 

 

 

 

 

R202

Q3

R10

 

 

 

 

 

 

C79

 

 

 

R50

 

 

C4

 

 

 

 

 

R118

 

C5

 

Q6

C3

 

 

 

 

 

 

R31

R110

C25

R9

 

 

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Contents UHF FM Transceiver LPD FM Transceiver Repair Notes IntroductionOrdering Parts Table of Contents ITA, ITA-1 CSA, CSA-1 Section SpecificationsCtcss Frequency List Channel Frequency ListRF Unit Inside ViewsMain Unit Removing the RF Unit Disasembly InstructionsRemoving the Rear Panel Removing the Main UnitRF Circuit RF Unit Antenna Switching Circuit RF UnitCircuit Description Receiver CircuitsPLL Circuits RF Unit Transmitter CircuitsCPU Main unit IC1 Power Supply Circuits Voltage LinePort Allocations Required Test Equipment Section Adjustment ProceduresEntering the Adjustment Mode PreparationDeviation AdjustmentTest C63R206 R50Order Description Section Parts ListRF Board Coil Eljre 18NG-F C211 4030006860 Cabinet Parts Chassis Parts Mechanical Parts and DisassemblyAccessories Unit abbreviation C Chassis PARTS, RF RF UNIT, M Main Unit Diodes SEMI-CONDUCTOR InformationTransistor and FET’S TOP View IC-4008A Board LayoutsMain Unit Bottom View IC-4008A R58C55 C17 R23 C18 C52 PSC Batt MOD VOL GND TOP View RF UnitBottom View FI3IC1 Block DiagramDTA144EU Voltage DiagramRF Unit 16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan 16, Kamihigashi, Hirano-ku, Osaka, 547-0002, Japan