Acer Altos R720 Series User Manual page 161

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