Sony Walkman 4-141-609-11 (1) Operation Manual page 146

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Troubleshooting
Operation (continued)
Symptom
Noise is generated.
Noise Canceling function
is not effective.
"VPT(Surround)" setting
or "Clear Stereo" function
is not effective.
Cause/Remedy
 Noise Canceling is set in a quiet place.
 Noise tends to be more noticeable in a quiet place or
depending on the noise type. Release Noise Canceling ( 
page 110). Furthermore, the supplied headphones are
designed for fairly high sensitivity to maximize the
effectiveness of Noise Canceling in noisy places such as
outside or in a train. For this, you may hear white noise in a
quiet place even if you release Noise Canceling.
 A device emitting radio signals, such as a mobile phone is
being used near the player.
 When using devices such as mobile phones, keep them away
from the player.
 Music data imported from CDs, etc., is damaged.
 Delete the data, then import and transfer it again. When
importing data to your computer, close any other
applications to avoid data damage.
 Transferred files are not in a playable format. For details, see
"Supported file format" of "Specifications" (  page 173).
 Some songs may not be played back, depending on certain
file specifications.
 The NOISE CANCELING switch is set to the off position.
 Slide the NOISE CANCELING switch in the direction of the
arrow  .
 You are using headphones other than the supplied ones.
 Use the supplied headphones.
 The supplied headphones are not being used properly.
 Change the size of the earbuds or adjust the earbud position
to fit your ears snugly and comfortably (  page 8). If you
change the size of earbuds, turn to install them firmly on the
headphones to prevent from detaching and remaining in
your ears.
 The microphone sensitivity is not properly adjusted.
 The player is adjusted at the factory to maximize the effect
of the Noise Canceling function. However, you may attain
more effectiveness by heightening or lowering the sensitivity
of the microphone embedded in the supplied headphones.
Readjust the Noise Canceling function (  page 117).
 The selected digital filter is not suitable for reducing the
ambient noise at the location.
 Select the digital filter that is most suitable for the location
(  page 116).
 The player is used in a quiet place.
 The Noise Canceling function may not be effective in a
quiet place or depending on the type of noise.
 When outputting to external audio speakers using the optional
cradle, "VPT(Surround)" settings and the "Clear Stereo"
function may not be effective because the player is designed for
compatible headphones only. This is not a malfunction.
Continued 