Kenwood TH-D74A User Manual - Page 125

Problem Probable Cause Corrective Action Received signals are not properly demodulated. Wrong settings for signal format (Demodulation mode). Try changing to other modes. When receiving sound is distorted in AM/SSB/CW, the receiving signal is too strong. Set the ATT function to ON. The display darkens. The temperature of the transceiver is rising. Turn OFF the power supply or remain in the receiving state and place the transceiver in a cool place. Difficult for the built-in GPS receiver to receive signals depending on the frequency of the transceiver. The local circuit of the transceiver is affecting the GPS sensitivity. Change the frequency in band A/band B, or change the frequency in use. The battery icon does not show that it is being charged. When charging during power OFF, nothing is displayed on the screen. The transceiver is being charged at the charging station. The battery icon does not show that it is being charged when charging the transceiver at the charging station. Nothing is displayed on the screen when charging at the charging station during power OFF. In this case, check the LED of the charging station for the status. Unable to connect to Bluetooth device. The transceiver is not paired with the Bluetooth device (headset etc.). Search for the Bluetooth device and connect when found. Bluetooth device is not found after searching The Bluetooth device (headset etc.) is not Wait for the Bluetooth device to be ready before ready. searching. Unable to communicate via virtual COM port even though the transceiver is connected to a PC via a USB cable. The USB selection setting is set to "Mass Storage". Set the USB selection setting to "COM+AF/IF Output". No sound from the PC even though the transceiver is connected to a PC via a USB cable. The USB selection setting is set to "Mass Set the USB selection setting to "COM+AF/IF Output". If Storage". you still cannot hear anything, check the PC settings. The transceiver is not displayed as a removable disk even though it is connected to a PC via a USB cable. The USB selection setting is set to "COM+AF/IF Output". Set the USB selection setting to "Mass Storage". Data saved on the microSD memory Data format is not supported. card cannot be read. Use a microSD memory card that was formatted on the transceiver. The voice of receiving party is cut off or distorted during transmission in DV/ DR mode. Bad propagation. Move to a location with good propagation. If the reception still does not improve, it could be due to bad propagation between the other station and the access repeaters of the other station. Inform the other station and ask them to adjust the output, or have them move to a location with good propagation. QSO is possible with Stand Alone in The Callsign of own station is not DV/ DR mode but not possible with registered in the D-STAR management Over the Gateway or specific stations. server. Register the Callsign in the D-STAR management server. Gateway is not functioning. Check with the management organization of the repeater. Packet loss icon < > lights up and voice is cut off during transmission in DV/ DR mode. ・The transceiver is receiving packet loss, indicating loss of partial data during communication via Internet network. Wait for a while and call again. The transceiver may mistake the receiving of packet loss with garbled data. In that case, "L" display will light up on the display even in local area call. FM display is blinking in DV mode. The transceiver is receiving signals in FM Wait for a while and call again. mode. No message is returned from the repeater after transmission in DR mode (S-meter also does not move). The access repeater selection is incorrect. The manually entered repeater frequency is incorrect (or shift setting is incorrect). Set the correct access repeater to "FROM". Set the repeater frequency (or shift setting) correctly. Outside the repeater area (or signals are not reaching the repeater). Move to a location where the signal reaches the repeater. Or, access another repeater where the signal reaches. The broadcast impossible icon appears after transmission in DR mode (Voice guidance indicates error). The destination repeater cannot be reached, or it is in use. The destination repeater Callsign is incorrect. Wait for a while and call again Set the correct repeater Callsign. Unable to connect to reflector in DR mode. The access repeater does not support reflector. Check with the management organization of the repeater. Unable to transmit using PTT in DV/ The transceiver is in data communication Cancel data communication mode and transmit using DR mode. mode. [PTT]. Transmission does not end immediately even after [PTT] is released in DV/ DR mode. "GPS Info. in Frame" is set to On. If it is not necessary, set "GPS Info. in Frame" to Off. 27-3