645TroubleshootingTroubleshootingProbable causeThe batteries are not loaded properly.The batteries are dead.The recorder is in power off mode.The recorder is in power off mode.The batteries are dead.The card does not have enough memory.The card is unformatted.The maximum number of files has beenreached.The SD card is locked.The earphone is connected.The VOLUME button is set to 0.The file is locked.The SD card is locked.The recorder was shaken duringrecording.The recorder was placed near a cellphone or fluorescent lamp whilerecording or during playback.The microphone sensitivity is too low.The maximum number of index marks(32) has been reached.The file is locked.The SD card is locked.Wrong folder.Switch the recording card.Sometimes a connection cannot be madewith some PCs running Windows XP orVista.SymptomNothing appearson the displayWon’t startUnable to recordNo playback toneheardUnable to eraseNoise heardduring playbackRecording leveltoo lowUnable to setindex marksCannot find therecorded voiceCannot connectto a PC using acradleActionVerify polarity is correct ( P.14, 15).Replace with new batteries ( P.15).Turn the recorder ON ( P.20).Turn the recorder ON ( P.20).Replace with new batteries ( P.15).Erase unnecessary files or insertanother card ( P.21, 31, 51).Format the card ( P.52).Check another folder.Unlock the SD card lock ( P.10).Unplug the earphones to use theinternal speaker.Adjust the VOLUME button.Unlock the file ( P.37).Unlock the SD card lock ( P.10).Move the recorder.Set the microphone sensitivity toConference mode and try again( P.37).Erase unnecessary index marks( P.50).Unlock the file ( P.37).Unlock the SD card lock ( P.10).Switch to the right folder.The recorder is recording to anothercard.You need to change the PC’s USBsettings. See DSS Player online helpfor details ( P.59).