0MPEG: Lights up when MPEG signals are input.
Note
Only the front 2 channels are compatible with MPEG format. Multi channel surround sound is downmixed and output from the front 2 channels.
qa DTS: Lights up when DTS signals are input. When playing a DTS format disc, be sure that you have made digital connections and that INPUT MODE is NOT set to ANALOG 2CH FIXED (see page 42).
qs OPT: Lights up when the source signal is a digital signal being input through the OPTICAL terminal.
qd COAX: Lights up when the source signal is a digital signal being input through the COAXIAL terminal.
qf L.F.E.: Lights up when the disc being played back contains the LFE (Low Frequency Effect) channel. When the sound of the LFE channel signal is actually being reproduced, the bars underneath the letters lights up to indicate the level. Since the LFE signal is not recorded in all parts of the input signal the bar indication will fluctuate (and may turn off) during playback.
Operation Amplifier/Tuner