Intel H2312JFJR Service Manual page 81

Appendix C: LED Decoder
Diagnostic LED Decoder
Checkpoint Upper Nibble
MSB
8h 4h 2h
LED #7 #6 #5
0x99h 1 0 0
0x9Ah 1 0 0
0x9Bh 1 0 0
0x9Ch 1 0 0
0xA8h 1 0 1
0xA9h 1 0 1
0xAAh 1 0 1
0xABh 1 0 1
0xACh 1 0 1
0xADh 1 0 1
0xB0h 1 0 1
0xB1h 1 0 1
0xB2h 1 0 1
0xB3h 1 0 1
0xB4h 1 0 1
0xB8h 1 0 1
0xB9h 1 0 1
0xBAh 1 0 1
0xBCh 1 0 1
0xBDh 1 0 1
0xD0 1 1 0
0xD1 1 1 0
0xD2 1 1 0
0xD3 1 1 0
0xD4 1 1 0
0xD5 1 1 0
0xD6 1 1 0
0xDF 1 1 0
0xE0h 1 1 1
0xE1h 1 1 1
0xE2h 1 1 1
0xE3h 1 1 1
0xF0h 1 1 1
68
1 = On, 0=Off
Lower Nibble
LSB
1h 8h 4h 2h 1h
#4 #3 #2 #1 #0
1 0 0 1 1
1 0 1 1 0
1 0 1 1 1
1 0 0 1 0
0 1 0 0 0
0 1 0 0 1
0 1 0 1 0
0 1 0 1 1
0 1 1 0 0
0 1 1 0 1
1 0 0 0 0
1 0 0 0 1
1 0 0 1 0
1 0 0 1 1
1 0 1 0 0
Removable Media
1 1 0 0 0
1 1 0 0 1
1 1 0 1 0
1 1 1 0 0
1 1 1 0 1
Boot Device Selection (BDS)
1 0 0 0 0
1 0 0 0 1
1 0 0 1 0
1 0 0 1 1
1 0 1 0 0
1 0 1 0 1
1 0 1 1 0
1 1 1 1 1
Pre-EFI Initialization (PEI) Core
0 0 0 0 0
0 0 0 0 1
0 0 0 1 0
0 0 0 1 1
1 0 0 0 0
Detecting the mouse
Detecting the presence of mouse
Enabling the mouse
Reserved for mouse
Serial Port
Resetting the serial port
Disabling the serial port
Detecting the presence of the serial port
Clearing serial port buffer
Enabling serial port
Reserved for serial port
Fixed Media
Resetting fixed media device
Disabling fixed media device
Detecting presence of a fixed media device (SATA hard drive detection, and
so forth)
Enabling/configuring a fixed media device
Reserved for fixed media
Resetting removable media device
Disabling removable media device
Detecting presence of a removable media device (SATA CDROM detection,
and so forth)
Enabling/configuring a removable media device
Reserved for removable media device
Entered the Boot Device Selection phase (BDS)
Return to last good boot device
Setup boot device selection policy
Connect boot device controller
Attempt flash update boot mode
Transfer control to EFI boot
Trying to boot device selection
Reserved for boot device selection
Entered Pre-EFI Initialization phase (PEI)
Started dispatching early initialization modules (PEIM)
Initial memory found, configured, and installed correctly
Transfer control to the DXE Core
PEI Modules
Install PEIM for Platform Status Codes
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