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ADDITIONAL INFORMATION
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 PMD680 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 PMD680 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 (1 = XLR input, 2 = 1/4"
input or internal microphone if nothing is plugged
into the 1/4" input).
• 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 PMD680.
Telephone recording results in the called phone
having a much lower level than the phone
connected to the PMD680.
• Adjust the recording level in the MANUAL mode
(using the REC LEVEL knob) to the called phone.
Then switch to the LIMITER mode. This will result in
the called phone level being recorded at a normal
level and the phone connected to the PMD680 limited
so that a normal level is also recorded.
• Check that the telephone line is working properly.
• Check that the hookup to the telephone line is as
indicated on page 6.
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 PMD680 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.
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.
