IBM SA38-0512-03 manual Appendix A. Interpreting Firmware Error Codes, Field Description

Appendix A. Interpreting Firmware Error Codes

The error code is an 8-character (4-byte) hexadecimal code produced by firmwa identify the potential failing function or FRU in a system. It consists of 5 sou characters and 3 reason code characters. Individual characters within the error have specific field definitions, as defined in the following tables. Table A-1 and Table A-2.

Table A-1. Service Reference Code Field Layout

Source

Code

Reason

Code

Byte

0

Byte

1

Byte 2

Byte

3

S1

S2

S3

S4

S5

R1

R2

R3

Table

A-2 (Page 1 of

2).

Service Reference Code Field Descriptions

Field

Description

Maintenance Package Source that produced the error code.

0Reserved

1Reserved

2POST, Firmware

3BIST

S1

4Service Processor, base system controller, etc.

5Reserved

8Product specific service guide, MAPs

9Reserved

	A-F	Reserved
S2	Base class
S3-S4	Sub-class
S5	Unique	version of the device/FRU type for a particular product.
	Device/FRU		unique			failure		reason	codes.
	1-7	Use		in	combination			with R2, R3 for diagnostic test failure when
		maximum			isolation		was	obtained.
	8-9	Use		in	combination			with	R2,	R3 for diagnostic test failure when
		maximum			isolation		was	NOT obtained.
R1	A	Log	analysis of				POST	error log
	B	Log analysis of machine check or checkstop error log
	C	Reserved
	D	Diagnostic				detected missing				resource
	E-F	Reserved

Appendix A. Interpreting Firmware ErrorA-1Codes