Symptom Checkpoints Cannot use a battery that can be � This unit considers the battery as empty even if there is actually used on other equipment. power left in it. This is to preserve the clock and other memory items. Recorded sounds contain noise � Reduce noise ( page 16). Noise is reduced and listening that makes them difficult to catch. becomes easier. Recording in the HQ mode is recommended. (This unit is designed for extended recording of human voice. It is not suited for recording music.) Sound is distorted. � Non-voice recordings such as music on CDs may become distorted in playback. Sound is distorted when listening � Keep the ear phones and the microphone you are using to the recording in progress with separate. the earphones. I hear noises. � Move the mobile telephone away from this unit when you use the two in the same area.