Yamaha YSP-300 Owner's Manual page 72

Use this feature to automatically set this unit to the standby mode after a specified period of time. The sleep timer is
useful if you are going to sleep after a certain amount of time while this unit is still playing back a source.
Each time you press SLEEP, the front panel display
changes as shown below.
SLEEP
(U.S.A. and Canada models)
Set the operation mode selector to YSP.
1
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Wait for a few seconds without operating this
unit to confirm the setting for the sleep timer.
The SLEEP indicator lights up in the front panel
display, indicating that the sleep timer is activated.
Press SLEEP repeatedly to set the interval
for the sleep timer.
Choices: 120min, 90min, 60min, 30min, OFF
The SLEEP indicator flashes in the front panel
display while switching the interval for the sleep
timer.
,, I /
-- SLEEP --
/ I \
Lights up
SLEEP
". ."
_ .... SLEEP ....
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Flashes
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