Sony Q017-MD1 Owner's Manual page 30

Item Options (underlined: default setting)
Power Mode This setting determines battery use.
Normal
Power Save
Quick
Note
• If no player operation (including opening or closing
of the lid) occurs for about 17 hours when "Power
Mode" function is set to "Quick" mode, the
response when the player is next used may be slow.
The player, however, will return to "Quick" response
after it has been used again.
During playback, the operation lamp on the player and the
remote display always light up.
During playback, the operation lamp on the player and the
remote display remain turned off. This leads to a longer
battery life.
The remote display lights up for only several seconds when
the DISPLAY button is pressed.
Quick response for the playback operation is given priority
over the battery life. When operating to start playback or go
to the beginning of a track, playback will start quickly.
Also during playback, the operation lamp on the player and
the remote display remain lit.
Because the battery is always used even when the player is
not operating, this leads to a shorter battery life. For this
reason, it is recommended that you charge the battery
frequently if you plan to use the "Quick" option.
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