Icom IC-4008MKII service manual C63, R206, R50, Test

Page 13

C63

Reference frequency adjustment

R206

Output power adjustment

ENTERING THE ADJUSTMENT MODE

qTurn the transceiver power OFF.

wWhile connecting the "TEST" to GND, then turn power ON.

5 - 3

RF

GND

R50

FM deviati

J1

RF test po

TEST

Image 13

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 Rear Panel Disasembly InstructionsRemoving the Main Unit Removing the RF UnitCircuit Description Antenna Switching Circuit RF UnitReceiver Circuits RF Circuit RF UnitPLL Circuits RF Unit Transmitter CircuitsPort Allocations Power Supply Circuits Voltage LineCPU Main unit IC1 Entering the Adjustment Mode Section Adjustment ProceduresPreparation Required Test EquipmentDeviation AdjustmentR206 C63R50 TestOrder 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