Intel P4304XXMFEN2 User Manual

Intel
®
Server Chassis P4304XXMFEN2/P4304XXMUXX Product Family System Integration and Service Guide
156
Should a major memory initialization error occur, preventing the system from booting with data integrity, a
beep code is generated, the MRC displays a fatal error code on the diagnostic LEDs, and a system halt
command is executed. Fatal MRC error halts do NOT change the state of the System Status LED and do NOT
get logged as SEL events. The following table lists all MRC fatal errors displayed to the diagnostic LEDs.
Note: Fatal MRC errors will display POST error codes that may be the same as BIOS POST progress codes
displayed later in the POST process. The fatal MRC codes can be distinguished from the BIOS POST
progress codes by the accompanying memory failure beep code of 3 long beeps as identified in
Table 15.
Table 11. MRC Fatal Error Codes
Diagnostic LED Decoder
LED
#
LED 3 LED 2 LED 1 LED 0
Description
Checkpoint
Upper
Nibble
8h
(MSB)
4h 2h
1h
(LSB)
Lower
Nibble
8h
(MSB)
4h 2h
1h
(LSB)
MRC Fatal Error Codes
E8h
Upper
Nibble
ON ON ON off
No Usable Memory Error
01h = No memory was detected from the SPD read or
invalid config that causes no operable memory.
Lower
Nibble
ON off off off
02h = Memory DIMMs on all channels of all sockets are
disabled due to hardware mem-test error.
3h = No memory installed. All channels are disabled.
E9h
Upper
Nibble
ON ON ON off
Memory is locked by Intel® Trusted Execution Technology
and is inaccessible.
Lower
Nibble
ON off off ON
EAh
Upper
Nibble
ON ON ON off
DDR4 Channel Training Error
01h = Error on read DQ/DQS (Data/Data Strobe)
initialization
02h = Error on Receive Enable
Lower
Nibble
ON off ON off
3h = Error on Write Leveling
04h = Error on write DQ/DQS (Data/Data Strobe
EBh
Upper
Nibble
ON ON ON off
Memory Test Failure
01h = Software mem-test failure.
02h = Hardware mem-test failed.

Intel P4304XXMFEN2 Specifications

General

Brand	Intel
Model	P4304XXMFEN2
Category	Chassis
Language	English