88 TASCAM DP-3215 – TroubleshootingThe SD card is not recognized.• Confirm that the SD card is completely inserted.Why can't I hear any sound when I play back?• Are the track faders of the tracks set to a proper level?• Is the STEREO fader set to a proper level?• Have you connected the PHONES or MONITOROUT jacks to your headphones or monitoring systemproperly?Is your monitoring system set up correctly?• Is the MONITOR LEVEL knob set to a proper level?(PHONES jack only)The sound I am trying to record sounds distorted.• Are the INPUT A to H TRIM knobs on the top of theunit set too high?Is the input source too loud?• Is the monitoring system distorted because themonitoring level is too high?Why can't I record?• You must have at least one track in recording standby(REC indicator flashing) before you can start recordingby pressing the RECORD (0).• Are input sources assigned to tracks? (See "Assigninginputs" on page 40.)Noise occurs if I connect a passive guitar or bassdirectly.• Connecting another device to the unit's STEREO OUTjacks might reduce the noise.• This might be caused by interference from anotherdevice. If there is a power amplifier or other devicethat uses a large transformer, a fluorescent light orsomething similar nearby, you might be able to reducethe noise by changing the distance and orientation ofthis unit in relation to such equipment.• You might also be able to noise if you use this unit'sGROUND connector to ground the unit.The disc tray does not open.• The disc tray will not open unless CD mode is active(CD screen or its CD menu open). Put the recorder intoMulti Track mode, press the CD button to openthe CD menu, and then press the F3 (-) button or thedisc eject button on the front panel.An audio CD that I made cannot be played on a CDplayer.• Did you finalize the audio CD?An audio CD that has not been finalized cannot beplayed on an ordinary CD player. Finalize the CD andtry again. (You cannot record on the CD any more afterfinalizing it.)• Are you trying to play a CD-RW disc on a CD player thatdoes not support CD-RW discs?Use a compatible CD player or create a new audio CDusing a CD-R disc. (Some CD players cannot play backCD-R discs either.)I cannot or fail to create an audio CD.• Are you using a blank CD (CD-R/CD-RW) that issupported by this unit?This unit does not support Ultra-Speed or Ultra-Speed+CD-RW discs.• Depending on the manufacturer and type of CD-R/CD-RW, writing might fail, writing might succeed but resultin an unreadable disc, or writing might take a longtime. In any of these cases, try using a CD-R/CD-RWfrom a different manufacturer or of a different brand.When working with this unit, if something is not working as you expect it should or if you experience any other difficulties,please refer to this troubleshooting section first. It contains the most common troubles, their probable causes andcorrective measures. In addition, see the "Messages" chapter starting on page 89 for the meaning of messages that mayappear on the display. Consult this table if a message appears when an operation cannot be completed by the unit.