System Service Guide

Appendix C: LED Decoder
Intel
®
Server System R1000JP Family Service Guide 59
Checkpoint
Diagnostic LED Decoder
Description
1 = On, 0=Off
Upper Nibble Lower Nibble
MSB LSB
8h 4h 2h 1h 8h 4h 2h 1h
LED
#7 #6 #5 #4 #3 #2 #1 #0
0x91h 1 0 0 1 0 0 0 1 Disabling the keyboard
0x92h 1 0 0 1 0 0 1 0 Detecting the presence of the keyboard
0x93h 1 0 0 1 0 0 1 1 Enabling the keyboard
0x94h 1 0 0 1 0 1 0 0 Clearing keyboard input buffer
0x96h 1 0 0 1 0 1 1 0 Reserved for keyboard
Mouse (only USB)
0x98h 1 0 0 1 0 0 1 0 Resetting the mouse
0x99h 1 0 0 1 0 0 1 1 Detecting the mouse
0x9Ah 1 0 0 1 0 1 1 0 Detecting the presence of mouse
0x9Bh 1 0 0 1 0 1 1 1 Enabling the mouse
0x9Ch 1 0 0 1 0 0 1 0 Reserved for mouse
Serial Port
0xA8h 1 0 1 0 1 0 0 0 Resetting the serial port
0xA9h 1 0 1 0 1 0 0 1 Disabling the serial port
0xAAh 1 0 1 0 1 0 1 0 Detecting the presence of the serial port
0xABh 1 0 1 0 1 0 1 1 Clearing serial port buffer
0xACh 1 0 1 0 1 1 0 0 Enabling serial port
0xADh 1 0 1 0 1 1 0 1 Reserved for serial port
Fixed Media
0xB0h 1 0 1 1 0 0 0 0 Resetting fixed media device
0xB1h 1 0 1 1 0 0 0 1 Disabling fixed media device
0xB2h 1 0 1 1 0 0 1 0
Detecting presence of a fixed media device (SATA
hard drive detection, and so forth)
0xB3h 1 0 1 1 0 0 1 1 Enabling/configuring a fixed media device
0xB4h 1 0 1 1 0 1 0 0 Reserved for fixed media