IBM B50 manual Eeprom problem, Memory errors, Xxx

Error Code	Function	Repair Action/Possible Failing FRU
	/Description
25AA0xxx	EEPROM problem	Notes:
		1. Ensure that the EEPROM Security jumper is in the
		correct position if doing a privileged-access
		password installation.
		2. Retry the operation.
		3. If retries do not solve the problem, replace the
		system board (see note 3 on page 2-1).
25AA0000	Unable to unlock	Refer to 25AA0xxx.
	EEPROM
25AA0001	Read-Recv error	Refer to 25AA0xxx.
25AA0002	Read-Trans error	Refer to 25AA0xxx.
25AA0003	Write-enable error	Refer to 25AA0xxx.
25AA0004	Write-recv error	Refer to 25AA0xxx.
25AA0005	Write-disable error	Refer to 25AA0xxx.
25AA0006	Write-Trans error	Refer to 25AA0xxx.
25AA0007	Unable to lock	Refer to 25AA0xxx.
	EEPROM
25Cyyxxx	Memory errors	Use the location code obtained from the SMS Error
		Log utility (described in “Step 1020-3” on page		2-8)to
		identify which memory dimm the error is reported
		against.
		Memory error codes are in the form25Cyyxxx		where
		yy indicates memory dimm PD-bits and	xxx	indicates
		the last three digits of the error code.
		See “Memory PD Bits” on page 3-13 for information on
		how to interpret PD bits.
25Cyy002	Memory dimm failed	1. Replace memory dimm
	memory test	2. Replace system board (see note 3 on page 2-1).
		See “Memory PD Bits” on page 3-13 for
		information on how to interpret PD bits.

Chapter 3. Error Code to FRU Index 3-9