Sega SATURN Device Manual Supplement page 16

Also, flashing of the other LED's when the LED 1 is off indicates the following errors
(if continuously on, then either the SCSI interface is being used or the SCSI driver
has halted).
LED No.
1 2 3 4 5 6 7 8
- - - - - - 0 0
- - - - - 0 - -
- - - - - 0 - 0
- - - - - 0 0 -
- - - - - 0 0 0
- - - - 0 - - -
- - - - 0 - - 0
- - - - 0 - 0 -
- - - - 0 - 0 0
- - - - 0 0 0 -
- - - - 0 0 0 0
- - - 0 - - - -
- - - 0 - - - 0
- 0 - - - - - -
- 0 - - - - - 0
- 0 - - - - 0 -
- 0 - - - - 0 0
- 0 - - - 0 - -
- 0 - - - 0 - 0
- 0 - - - 0 0 -
- 0 - - - 0 0 0
- 0 - - 0 - - -
- 0 - - 0 - - 0
12
Description
YM3802(MIDI-1) IRQ vector error
// (MIDI-2) //
MIDI data error
YM3802 (MIDI-1) MIDI out error
// (MIDI-2) //
MIDI control change $60-$7F input
Host I/F command execute error
. . . .
. . . .
Map change error
Bank change error
Mixer change error
Effect change error
68k undefined vector event
. . . .
68k bus error
68k address error
. . . .
68k level-3 event
68k level-4 event
68k level-7 event