Icom IC-80AD Service Manual

Also see for IC-80AD: Instruction manual Operating guide Service manual

Icom IC-80AD Service Manual Manual pdf 20 page image

5 - 55-5 IDLING CURRENT ADJUSTMENT (at 13.5 V)Select an adjustment item using [2] / [8], then set the adjustment value as specifi ed using [DIAL].ADJUSTMENT ADJUSTMENTITEM OPERATION VALUEDRIVE AMPIDLING CURRENT[ID1]1 1) Set the power supply voltage to 13.5 V.(supplying from [DC IN])2) Connect an RF power meter to the antenna connector.3) Connect a multimeter between the power supply and transceiver.4) Set the item [IP1] to "00."–[VHF BAND](Hi power)2 • While transmitting, adjust the idling current using [DIAL], thenpush [BAND] to store the adjustment value.180–230mA(Mid power) 3(Low power) 4(S-Low power) 5[UHF BAND](Hi power)6150–200mA(Mid power) 7(Low power) 8(S-Low power) 9FINAL AMPIDLING CURRENT[IP1]1 1) Set the power supply voltage to 13.5 V.(supplying from [DC IN])2) Connect an RF power meter to the antenna connector.3) Connect a multimeter between the power supply and transceiver.–[VHF BAND](Hi power)2 • While transmitting, adjust the idling current using [DIAL], thenpush [BAND] to store the adjustment value. 700 mA(Mid power) 3 400 mA(Low power) 4 250 mA(S-Low power) 5[UHF BAND](Hi power)6 900 mA(Mid power) 7 400 mA(Low power) 8 250 mA(S-Low power) 9NOTE: When "IDLING CURRENT" is adjusted, "TRANSMIT POWER" must be re-adjusted too.