Pioneer X-NM1 Operating Instructions Manual page 12

Lights when a CD is loaded in the CD player and blinks
during CD play-pause
Character display
Lights when in one of the RDS display or search modes (UK
and European model only)
Lights when a tape is loaded in the deck
Lights when tuned to a radio station
Lights when you are listening to an FM radio
broadcast in mono – page 15
Lights when you are listening to an FM radio
broadcast in stereo
Lights when using program play – page 18
Lights during random play – page 19
Blinks during 1 track repeat play, lights during
all track repeat play – page 19
Lights when recording a CD or external source
Lights when the record timer is set, blinks when in use–
page 32–33
Lights when the sleep timer is set – page 31
Timer – Lights when the wake up timer is set, blinks
when in use– pages 30, 33