Sony RHTG2000 - Manual (Page 30)

30 US
Front panel display
About the indications in the front panel display
A Current surround format
B Lights up in SLEEP mode. (20)
C Lights up when A/V SYNC is functioning. (16) D Lights up when a radio station is tuned. (19)
E Lights up when a stereo broadcast is tuned. (19)
F Lights up when listening to the radio in monaural
effect. (19)
TUNED ST MONO SLEEP
A/V SYNC