Acer Altos R520 manual 144, Local Console, Remote Console, Keyboard PS/2 or USB, Mouse PS/2 or USB

144					5 Troubleshooting
	Diagnostic LED Decoder
Checkpoint	G=Green, R=Red, A=Amber				Description
code
	MSB			LSB
ATA / ATAPI / SATA
0x5Ah	G	R	G	R	Resetting PATA / SATA bus and all
					devices
0x5Bh	G	R	G	A	Reserved for ATA
SMBUS
0x5Ch	G	A	OFF	R	Resetting SMBUS
0x5Dh	G	A	OFF	A	Reserved for SMBUS
Local Console
0x70h	OFF	R	R	R	Resetting the video controller
0x71h	OFF	R	R	A	Disabling the video controller
0x72h	OFF	R	A	R	Enabling the video controller
Remote Console
0x78h	G	R	R	R	Resetting the console controller
0x79h	G	R	R	A	Disabling the console controller
0x7Ah	G	R	A	R	Enabling the console controller
Keyboard (PS/2 or USB)
0x90h	R	OFF	OFF	R	Resetting the keyboard
0x91h	R	OFF	OFF	A	Disabling the keyboard
0x92h	R	OFF	G	R	Detecting the presence of the
					keyboard
0x93h	R	OFF	G	A	Enabling the keyboard
0x94h	R	G	OFF	R	Clearing keyboard input buffer
0x95h	R	G	OFF	A	Instructing keyboard controller to
					run Self Test (PS/2 only)
Mouse (PS/2 or USB)
0x98h	A	OFF	OFF	R	Resetting the mouse
0x99h	A	OFF	OFF	A	Detecting the mouse
0x9Ah	A	OFF	G	R	Detecting the presence of mouse