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ADDITIONAL INFORMATION
ENGLISH
27
Troubleshooting
If your unit fails to operate normally, check the symptoms
and solutions described below. If the problem persists
and cannot be corrected, please contact the Marantz
Professional dealer from whom the product was
purchased.
The unit does not respond to operations.
• Make sure that fresh batteries are installed, or that the
AC power adaptor is connected properly.
• Make sure the PC Card is fully inserted.
• Turn power OFF, then ON.
The unit does not work normally.
• Check all settings.
Playback is not possible.
• Check to make sure the PMD690 acknowledges track
information on the PC Card.
Audio is not output through the headphones or
speaker.
• Check the HP/SPK VOLUME level.
• Check a different track or card to see if the problem is
consistent with other tracks or cards.
Audio is not output through the Digital Out.
• Check that the DIGITAL OUT ON/OFF switch is set to
the ON position.
• Note that the Digital output is automatically disabled
during recording.
Recording is not possible.
• Check that less than 255 tracks are recorded on the card
(255 tracks are the maximum number of recorded
tracks).
• Check to make sure that the PMD690 acknowledges the
PC Card.
No signal is recorded from a microphone input.
• Check that the INPUT switch is set to the middle
position (MIC) and that the MIC switch is set to the
correct microphone selection.
• Check that the REC LEVEL switch is set to the correct
position. In MANUAL and LIMITER modes, the REC
LEVEL knob controls the recording level. During ALC,
the recording level is controlled automatically by the
PMD690.
• Check if the microphones you are using require
phantom power (condensor microphones). If they do,
make sure the phantom power switch on the right side
of the PMD690 is in the ON position.
Excessive noise.
• Check all connected cables for proper connection.
File playback on a PC results in poor sound.
• Different PC sound cards and playback programs will
result in different sound quality.
• The PMD690 records all the audio files with a sampling
frequency of 48kHz. Some PC programs convert the
files into 44.1kHz (using a sample rate converter) in
order to play or edit the files, which may cause a
degradation in the sound quality. Only high quality
sample rate converters should be used.
Files recorded on the PMD690 are not able to be
read by a PC.
• Some PCs may not be able to understand MP2 files
recorded with the Wave (.wav) file extension. If you
happen to have files in this situation, rename the files
using a PC so that the file extension is changed to MP2
(.mp2).
• Some playback and editing programs do not support the
MP2 or Broadcast Wave (.bwf) formats. If you are
having trouble playing or editing MP2 or Broadcast
Wave files, consult the Marantz Professional website at
www.marantz.com for links to programs that support
MP2 and Broadcast Wave.
The rechargeable battery is not charging.
• Check that the CHARGE switch is set to the ON
position.
• Make sure the CHARGE LED is flashing during
charging and then stays steadily on when charging is
complete.
• Make sure the AC Adaptor is correctly plugged in and
the power on the unit is turned off.
Rechargeable battery life is very low.
• Make sure to fully charge and discharge the battery
with each use. NiCad batteries have a memory effect,
which means that the life of the battery will become
much lower if the battery is only partially discharged
(used) and then re-charged.
• If the battery has been heavily used or is old, it may
need to be replaced with a new one. Contact your
dealer directly to purchase a new battery.
Care and Maintenance
To clean the cabinet
Use a soft cloth slightly moistened with mild detergent
solution.