Troubleshooting - Tascam DR-40 Reference Manual

15 – Troubleshooting
If you are having trouble with the operation of this unit, please
try the following before seeking repair. If these measures
do not solve the problem, please contact the store where
you bought the unit, an authorized distributor or a TASCAM
Customer Support.
8 Power will not turn ON.
• Confirm that the batteries are not dead.
• Confirm that the batteries are installed with the correct +/–
orientation.
• Confirm that the AC adapter (TASCAM PS-P520E, sold
separately) is firmly connected to both the socket and the
unit.
• Confirm that the USB cable (if used for USB bus power
supply) is firmly connected.
• Confirm that the USB cable (if used for USB bus power
supply) is not connected via a USB hub.
8 The unit turns off automatically.
• Is the automatic power saving function on? (See "Setting
the automatic power saving function" on page 98.)
• Since this unit complies with the European Standby
Power Regulations (ErP), the automatic power saving
function operates regardless of whether the unit is
being powered by an AC adapter or batteries. If you do
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not want to use the automatic power saving function,
set it to "OFF". (The factory default setting is "30min".)
8 The unit does not function.
• Confirm that the HOLD switch is not set in the direction of
the arrow.
• Is the unit connected to a PC with the USB cable? (Is USB
connected shown on the display?)
8 The SD card is not recognized.
• Confirm that the SD card is inserted completely.
8 Playback does not work.
• If you are trying to play a WAV file, confirm that the sampling
frequency is supported by this unit.
• If you are trying to play an MP3 file, confirm that the bit rate
is supported by this unit.
8 The speakers do not work.
• Are headphones connected?
• Is SPEAKER set to OFF?
• Check the connections with the monitoring system.
• Is the volume of the monitoring system minimized?
• Is the OUTPUT LEVEL setting of the unit minimized?
8 Recording does not work.
• If you are using an external device, check the connection
again.