Icom IC-4008MKII Disasembly Instructions, Removing the Rear Panel, Removing the Main Unit

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SECTION 3 DISASEMBLY INSTRUCTIONS

•REMOVING THE REAR PANEL

Unscrew 1 screw , and 4 screws .

Remove the rear panel in the direction of the arrow.

B

B

•REMOVING THE MAIN UNIT

Unscrew 2 screws, .

Remove the PTT rubber, .

Unsolder 2 points, , and remove the MAIN unit.

FG

A

H

•REMOVING THE RF UNIT

Remove 1 knob, , and unscrew 1 nut, .

Unsolder 1 point, , and then remove the RF unit.

		RF unit
C		E
C	D	MAIN unit

3 - 1

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Contents UHF FM Transceiver LPD FM Transceiver Ordering Parts IntroductionRepair Notes Table of Contents ITA, ITA-1 CSA, CSA-1 Section SpecificationsCtcss Frequency List Channel Frequency ListMain Unit Inside ViewsRF 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 CircuitsPort Allocations Power Supply Circuits Voltage LineCPU Main unit IC1 Required Test Equipment Section Adjustment ProceduresEntering the Adjustment Mode PreparationDeviation AdjustmentTest C63R206 R50Order Description Section Parts ListRF 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 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