Sony PCM-D50 Operating Instructions Manual page 49

Symptom
You cannot erase a
track.
Noise is heard.
The sound picked up is
distorted.
Noise occurs during
recording.
"--y--m--d --:--" is
displayed as the
recorded date.
Cause/Solution
The write-protect switch on the inserted "Memory Stick" is set to "LOCK."

Release the lock.
When you use a Windows computer, the track or the folder containing the

track is set to "Read-only" on the computer. Display the track or the folder
using Windows Explorer and remove the check for "Read-only" under
"Properties."
When you use a Macintosh computer, the track or the folder containing the

track is set to "Locked" on the computer. Display the track or the folder on
Macintosh Desktop and remove the check for "Locked" under "GetInfo" of
"File."
The remaining battery power is insufficient. Connect the AC power adapter

to the recorder (page 19), or replace the batteries with new ones (page 17).
An object, such as your finger, etc., accidentally rubbed or scratched the

recorder during recording so that noise was recorded.
Noise may occur if many small-sized files are recorded in the current

memory. Save the tracks on the hard disk of your computer (page 36), and
then format the memory (page 41).
The recorder was placed near an AC power source, a fluorescent lamp, or

a mobile phone during recording or playback.
Noise may occur if the plug of the connected external microphone was

dirty when recording. Clean the plug.
Noise may occur if the plug of the connected headphones is dirty during

playback or monitoring the recording sound. Clean the plug.
The INPUT switch is in the wrong position. Set it to the position that

corresponds to the sound source and connections (pages 23, 28 - 30).
Adjust the recording level to an appropriate range (page 24).

The sound source is too loud when recording with an external microphone.

Set the MIC ATT switch to the "20" position (page 22), or move the
microphone away from the sound source.
The sound source has parts that are too loud. Adjust the value in

"LIMITER" in the menu display (page 43), and set the LIMITER switch to
"ON."
When monitoring the recording sound with headphones, they are too close

to the microphone. Decrease the sound level from the headphones or keep
the microphone away from them.
Set the clock (page 19). The date and time of recording are displayed after

the clock is set.
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