IC-7400 Datasheet | Icom

HF/VHF ALL MODE TRANSCEIVER S-14610XZ-C1 Jul. 2009 INTRODUCTION This service manual describes the latest technical infor mation for the IC-7400 HF/VHF ALL MODE TRANSCEIVER at the time of publication. MODEL VERSION EUR FRA IC-7400 DEN ITR ESP KOR 100W CARRIER POWER CAUTION NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than specified. This will ruin the transceiver. DO NOT expose the transceiver to rain, snow or any liquids. DO NOT reverse the polarities of the power supply when connecting the transceiver. DO NOT apply an RF signal of more than 20 d Bm (100 m W) to the antenna connector. This could damage the transceiver’s front-end. To upgrade quality, any electrical or mechanical parts and internal circuits are subject to change without notice or obligation. ORDERING PARTS Be sure to include the following four points when ordering replacement parts: 1. 10-digit I parts numbers 2. ponent name 3. Equipment model name and unit name 4. Quantity required <ORDER EXAMPLE> 1110003491 S.IC TA31136FNG IC-7400 IC-7400 MAIN UNIT Top cover 5 pieces 10 pieces 8820001210 Screw 2438 screw REPAIR NOTES 1. Make sure that the problem is internal before disassembling the transceiver. 2. DO NOT open the transceiver until the transceiver is disconnected from its power source. 3. DO NOT force any of the variable ponents. Turn them slowly and smoothly. 4. DO NOT short any circuits or electronic parts. An insulated tuning tool MUST be used for all adjustments. 5. DO NOT keep power ON for a long time when the transceiver is defective. 6. DO NOT transmit power into a Standard Signal Generator or a Sweep Generator. 7. ALWAYS connect a 50 d B to 60 d B attenuator between the transceiver and a Deviation Meter or Spectrum Analyzer when using such test equipment. 8. READ the instructions of test equipment throughly before connecting a test equipment to the transceiver. Addresses are provided on the inside back cover for your convenience. I,...