Marantz Professional PMD661 - Manual (Page 71)

62
Troubleshooting
Should problems occur, it is often unnecessary to consult your
dealer or technical service department. On the basis of the following
checks, you may be able to rectify a number of conditions yourself
without difficulty. If the condition cannot be remedied after the
following check, please consult your dealer.
The PMD661 does not turn on.
• Install fresh batteries.
• Check AC adapter connections.
The PMD661 turns on then turns itself off.
• Install fresh batteries.
The PMD661 seems to record, but there is no sound on
playback.
• Check input settings.
(For example, if LINE input is selected and no input is connected to
the LINE jack, the PMD661 will record silence. The PMD661 will not
playback.)
There is no audio playback through headphones or internal
speaker.
• Check VOL+/– control setting.
• Check a different audio file or the card.
The PMD661 will not record.
• Check that the maximum of 999 files have not been recorded.
• Check that the PMD661 acknowledges the card.
No signal from microphone input.
• Check input selection.
• Check REC LEVEL control settings.
• Check if microphone(s) require(s) Phantom power.
There is excessive noise on the PMD661.
• Check cable connections and/or replace cable.
• Check for proper gain levels.
Playback on a PC results in poor sound.
• Check quality of PC sound card and program.
• Check frequency conversion program.*
* The PMD661 records audio files with a sampling frequency of
48kHz. Some PC programs convert the files to 44.1kHz (using a
sample rate converter). Only high quality sample rate converters
should be used.
PC cannot read files
• Check the capability of the PC program. Some playback and
editing programs do not support MP3 or Broadcast Wave (.wav)
formats.
If the PMD661 exhibits erratic behavior, the microprocessor can
be reset by powering off, disconnecting AC power and removing
batteries.
Care and Maintenance
Use a soft cloth slightly moistened with mild detergent solution.
Media cards that are heavily used should be occasionally
reformatted to avoid audio problems due to fragmentation.