20 VL-2000 Operating ManualS ympTom probAble cAuSe remedyFails to power up. POWER Cables. Check the connections of the POWER Cables.Operating band does not change. BAND DATA Cable or CNTL Cable. Check the connections of the BAND DATA Cable.TX power output does not appear. Connection Cable between the transceiverand VL-2000.Check the connections of the Connection cable between thetransceiver and VL-2000.Antenna Cable. Check the connections of the Antenna Cable.INPUT Switch. Set the INPUT switch to the position where the transceiver isconnected.OPERATE Switch. Turn “on” the OPERATE switch.TX power output does not appear.(PROTECT LED blinks red)Excessive the exciter power.(ATT LED blinks red)r Reduce the exciter power to the 100 watts.r Turn “on” the ATT switch.Excessive the output power.(PO METER LED blinks red) Check the connections of the ALC cable.Incorrect the operating band or out from theamateur band.(one of the BAND LED blinks red)r Set the BAND switch to the correct band.r Set the transceiver’s frequency in the amateur band.High Temperature of the Power Transistor. Stop the transmission immediately, then wait till temperatureof the Power Amplifier falls.Unbalance the power combine circuit of thefinal transistor. (OPERATE LED blinks red)Stop the transmission immediately, then contact your VertexStandard dealer.High or Low drain voltage.(VD METER LED blinks red)Stop the transmission immediately, then contact your VertexStandard dealer.Excessive the drain current of the PowerTransistor. (IDD METER LED blinks red)Stop the transmission immediately, then contact your VertexStandard dealer.Low Transmit Power Connection Cable between the transceiverand VL-2000.Check the connections of the Connection Cable between thetransceiver and VL-2000.Lower exciter power. Adjust the output power of the exciter.ALC voltage. Adjust the ALC voltage.Antenna miss-matching. Adjust the antenna matching (Set the SWR to better than 2.0:1).Low AC power. Prepare 220 V AC for 1.5 kW operation.Antenna Tuner does not operate. Connection Cable between the transceiverand VL-2000.Check the connections of the Connection Cable between thetransceiver and VL-2000.HI-SWR LED glows red. Antenna miss-matching.(SWR is more than 2.0:1) Adjust the antenna matching.HI-SWR LED blinks red. Antenna miss-matching.(SWR is more than 3.0:1)r Adjust the antenna matching.r Check the connections of the Antenna Cable.ATT LED blinks red. Excessive the exciter power. Turn “on” the ATT switch.Trouble Shooting