Sony HT-IS100 Operating Instructions Manual page 33

About the indications in the top panel display
A Lights up according to the audio input signals.
B SLEEP (62)
Flashes when the Sleep Timer function is active.
C NIGHT (40)
Lights up when the night mode is on.
D COAX/OPT
Lights up according to the coaxial or optical signal being input.
E TUNED (46)
Lights up when a radio station is received.
F ST/MONO (48)
Lights up according to the stereo or monaural status of the radio.
G Displays system's status.
Radio frequency, sound field, etc.
H HDMI (16, 74)
Lights up when an HDMI component is being used.
continued
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