AM/PM • This indicator tells whether the time is AM or PM.
SEP • This indicator shows the tape speed for each deck. If you are playing a tape, the tape speed is the speed at which the tape was recorded. Tapes can be played in three speeds, SP, EP and LP. Tapes can be recorded in SP and EP.
ATR • Auto Tracking. This indicator will be blinking during automatic tracking. It will be on during play- back unless tracking is adjusted manually.