Palm Treo 755P User Manual page 269

Setting System Volume Levels
You can set the volume level for system sounds, such as the tone that plays when you
synchronize.
Tip:
1. Press Applications
2. Select the Application pick list, and then select System.
3. Select the System Volume and Game Volume pick lists, and
then select the volume levels.
4. Select Done.
Section 6B: Customizing
If the Ringer switch is set to Sound Off, the ringer setting overrides the
sound settings and all sounds are turned off.
and select Sounds .
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