Document intsrdb/21117

SRDB ID		Synopsis		Date
21117		Unable to boot after replacing CPU in Ultra 5/10		25 May 2000

Status

Issued

Description

After replacing the CPU in the Ultra 5 or 10, the system won't boot.
The CPU's that cause this problem are:

	Part#: 501-5568
	Desc: ASSY,SAP-RED,333MHZ,2MB 
	or
	Part#: 501-5148
	Desc: ASY,SPPHR-RED,360MHZ,.25MB
	or
	Part#: 501-5149
	Desc: ASSY,SPPHR-RED,440MHZ,2MB

but only in a system with an OBP level of < 3.19v4
The system will have the following symptoms:

	No display.
	POST hangs with out passing or indicating a failure.
	No output from ttya.

SOLUTION SUMMARY:

A proactive solution would be to upgrade the OBP to >= 3.19V4 prior to 
replacing the CPU.  After the fact, a possible solution is to temporarily 
replace the offending CPU(mentioned previously) with an unaffected CPU, 
then upgrade the OBP.

INTERNAL SUMMARY:

This problem is seen when the following occurs:

501-5568 is substituted for 501-5090

501-5148 is installed into a Ultra 5 (A21) as an upgrade.

501-5149 is installed into a Ultra 10 (A22) as an upgrade.

APPLIES TO: Hardware, Hardware/Ultra Workstations, AFO Vertical Team Docs, AFO Vertical Team Docs/Hardware ATTACHMENTS: