If the OPERATION CONTROL keys substitute for keys which
has no function (empty), no command is carried out.
According to your plan, store functions from other remote
control units into an empty area of those keys. (Refer to pages
61 to 62 for the learning method.)
While playing an audio/video unit, if you want to operate
another unit by using the remote control unit (for example, if
you want to rewind a tape on your VCR while listening to a CD),
you should open the lid of the remote control unit and use the
A/B/C switch and the corresponding keys.
(If you press an input selector key with the lid closed to change
the functions of the OPERATION CONTROL keys to the
functions for controlling a VCR, the input of currently playing
CD source is canceled.)
About the lighting of keys
When an input selector key is pressed, the pressed key and
only the available OPERATION CONTROL keys (which substitute
for the keys stored with the preset functions or learned functions)
light up for about 3 seconds. So you can know what keys are
available at a glance.
Conversely, when an OPERATION CONTROL key is pressed,
all of the available OPERATION CONTROL keys and the currently
selected input selector key light up.