164AppendixIf you suspect malfunction Check the following items before requesting a repair.The transceiver does not turn on. Is the battery depleted? Charge the battery pack after purchase, and when the transceiver has not been used for a long time. Is the battery pack properly attached?Refer to “Mounting the battery pack” and securely mount the battery pack. Is the external power supply properly connected?When using an external power supply, connect the external power supply adapter with a cigarettelighter plug (SDD-13) or an external power cable (E-DC-6) to DC input jack. Is the voltage of the battery pack or the SDD-13 correct?Be sure that there is a charge left in the battery pack (do not completely discharge). Check that theoutput voltage of the SDD-13 is approximately 12V.There is no sound. Is the level of squelch (or S meter squelch) set too high?Press the Monitor Switch and verify that you can hear white noise.Adjust the level of squelch (or S meter squelch) when receiving a weak signal. Is the volume low?Rotate the VOL knob clockwise to increase the volume. Is the tone squelch or DCS on?When the tone squelch or DCS is on, the sound is not output until the transceiver receives a signalcontaining the same tone frequency or DCS code set.There is no transmission of radio waves. Are you pressing the switch properly? Is the PTT lock on? Is the Busy TX Block (BCLO function) on?When the Busy TX Block (BCLO function) is on, transmission cannot be done when receiving a signaleven if is pressed. Wait until signal being received stops and then press . Is the transmission frequency on a ham radio band?Transmission cannot be performed on the AM Radio Broadcast Band/ Short Wave Radio Band/ FMRadio Broadcast Band/ Air Band/ Information Radio Band. Is the voltage of the battery pack or external power source correct?Check the remaining charge on the battery pack.In addition, using an inadequate power supply where voltage drops during transmission will preventthe FT2DR/DE from operating at full capability.The keys or DIAL does not respond. Is the Key Lock or DIAL Lock on?