Sony NW-S4 - Manual (Page 14)

14
To lock all controls
Slide the HOLD switch to ..
Controls will be locked.
To release the HOLD function
Slide the HOLD switch in the opposite direction of the
arrow.
The HOLD switch locks all controls to prevent
accidental operation.
HOLD switch
Protecting your hearing (AVLS)
To limit the maximum volume level
Slide the AVLS switch to LIMIT.
To cancel AVLS
Slide the AVLS switch to NORM.
The AVLS (Automatic Volume Limiter System)
function keeps down the maximum volume to protect
your ears.
AVLS switch
Locking the controls (HOLD)