Using Optional Equipment; Deactivating The Buttons On The Unit (Child Lock) - Sony MHC-EX990 Operating Instructions Manual

Using optional
equipment
1
Connect an optional audio/video
equipment to the DVD/PC IN L/R
jacks on the unit using an audio
analog cord (not supplied).
2
Press VOLUME – repeatedly
until "VOL MIN" appears in the
display panel.
3
Press FUNCTION repeatedly to
select "DVD/PC".
4
Start playing the connected
equipment and adjust the
volume.
Note
Make sure to turn down the volume to minimum
level before connecting or disconnecting the
equipment. Otherwise, noise may be generated,
the system may malfunction, or "PROTECT
EXX" may appear in the display panel
(page 20).
18 GB
Deactivating the
buttons on the unit
(Child Lock)
You can deactivate the buttons on the unit
(except "/1) for preventing
misoperation, such as child mischief.
Hold down x on the unit for more
than 5 seconds.
"CHILD LOCK ON" appears in the
display panel.
You can only operate the system using the
buttons on the remote control.
To cancel, hold down x on the unit for
more than 5 seconds until "CHILD LOCK
OFF" appears in the display panel.
Note
Child Lock function will be canceled when you
disconnect the power cord.