HR16 and HR16B
Power up holding down "ERASE", "DELETE", and "RECORD" - clears all memory/ reinilize system
Power up holding down "QUANT" and "MIDI UTIL" - self tests
Hold "PATT" and press "VOICE" = DAC adjust mode ( "STOP" to exit)

MMT8
Power up holding "ERASE", "PAGE UP", and "PAGE DOWN" - Clears memory/ reinitilizes system
Power up holding down "QUANT" and "LOOP" - self test

Quadraverb
Power up holding "BYPASS" and "PROGRAM" - clears memory/ reinitilize
Power up holding "BYPASS" and " CONFIG" - self test
Power up holding "BYPASS" and "STORE" - clears edit buffer only
Select "PROGRAM" and press "cursor up" and "cursor down" - checks software revision

Midiverb III
Power up holding down "INT PROG" and "STORE" - clears memory / reinitilizes system
Power up holding down " INT PROG" and "CONFIG" - Self test
Error #01 = Ram error
Error #02 = ROM error
Error #03 = Midi error

Data Disk
Power up holding down "FORMAT" and "DO YES" - self test

SR16
Power up holding down "ERASE" and " PLAY" - clears memory / reinitilizes system
Select "BACKUP" menu and press "FILL" - check software revision
Hold "FILL" and press "PREFORM/ COMPOSE" enters DAC adjust mode
Power up holding down "PATTERN / SONG" and "USR / PRESET" - self test
Power up holding down "PATTERN / SONG" and "UP- ARROW" - enter LCD self test
"PLAY" - will toggle LCD on and off
"STOP" - exits

D4
Power up holding down " OUTPUT" and "VOICE" - clears memory / reinitilizes system
Power up holding down " MIDI and "DRUM SET" - self test - "MIDI" to advance to next test
Select "DRUM SET" and press "cursor left" and "cursor right" - check software

ADAT- ADATXT
Power up holding down "PLAY" and "RECORD" - Reinitilize
With unit on Press and hold "LOCATE" and "FAST FORWARD" - Checks software rev
Power up holding down "TRACK ENABLE" 1 and 8 - Self test mode
Pressing Set Locate and "STOP" will indicate head hours

BRC
Power up holding down "PLAY" and "RECORD" - Reinitilizes.
While in normal operation mode press "MIDI/UTIL" button 10X to check software rev.




Note that all tests procedures require a MIDI cable connecting "MIDI IN" to "MIDI OUT"
HR16, HR16B, and MMT8 additionally require a cable connecting "Tape In" to "Tape Out"
Data Disks require a FORMATED disk in the drive.