Sony MZ-S1 Operating Instructions Manual page 18

(_) Close the buckle.
firmly and completely into the appropriate jacks)
CD player, MD _ _ _--'_ PortableCD
to awall player, DVD _ player, etc.
outlet video player, etc.
J
v
AC poweradaptor _ to a digital (Optical) outjack
Optical plug
Optical cable
POC-15B*,
etc.
Optical mini-plug
to DC IN 3V
* See "Optional accessories" (page 64)
to LINE IN (OPTICAL)