Sony CD-UX71 Operating Instructions Manual page 98

Symptom
The operation indicator
does not light.
"MEMORY FULL" is
displayed and you cannot
start recording.
"FILE FULL" is displayed
and you cannot operate
the IC recorder.
Recording is interrupted.
Noise is heard.
Recording level is low.

GB
Remedy
"LED" is set to "OFF" (page 70). Display the menu and set "LED"

to "ON. "
The memory is full. Erase some of the messages (page 52) or

erase all the messages after you store them on your computer.
99 messages have been recorded in the selected

495 messages (when there are 5 folders) in total have been
recorded. Therefore you cannot record another message, or
move a message. Erase some of the messages (page 52) or
erase all the messages after you store them on your computer.
The VOR function (page 30) is activated. Set "VOR" to "OFF" in

the menu (page 64).
An object, such as your finger, etc., accidentally rubbed or

scratched the IC recorder during recording so that noise was
recorded.
The IC recorder was placed near an AC power source, a

fluorescent lamp or a mobile phone during recording or
playback.
Plug of the connected microphone was dirty when recording.

Clean the plug.
The  (headphones) plug is dirty. Clean the plug.

"MIC SENSITIVITY" (microphone sensitivity) is set to "LOW (L). "

Display the menu and set "MIC SENSITIVITY" to "HIGH (H)"
(page 28).
folder or