Subject: 174 POST ERROR and MICROPROCESSOR ERROR in DIAGNOSTIC
Updated PS/2 Server RETAIN Tip:
Record number: H132024
Device: D/T9585
Model: M
Hit count: UHC00015
Success count: USC0000
Publication code: PC50
Tip key: 008
Date created: O98/11/03
Date last altered: A99/01/21
Owning B.U.: USA
Abstract: 174 POST ERROR and MICROPROCESSOR ERROR in DIAGNOSTIC
TEXT:
174 POST Error and Microprocessor Error in Diagnostic
SYMPTOM:
Customer will see a 174 error at POST. Reference disk will display 0 MHz for the
processor speed. Diagnostics when ran will display the following error:
(slot =0, server 85 system board... error code = 00015400, a microprocessor error
occurred at test step 115, most likely causes are Microprocessor, or system board)
PROBLEM ISOLATION AIDS:
PROCEDURE:
Customer must first Contact The IBM HelpCenter at 1 800-772-2227,
to order the required socket interposer.
NOTE: EMEA Contact Numbers are available on the web at the following URL:
http://www.pc.ibm.com/support?page=YAST-3P2QYL
To install interposer onto processor, first ground yourself, then remove processor
and interposer from packaging remembering to avoid contact with the pins.
Remove processor fan assembly by gently squeezing together the two retaining clips.
Keeping the retainer clips squeezed together, slowly lift up the corner, pivoting it
against the opposite corner. When the fan assembly is approximately at a 45 degree angle,
left straight up from the processor.
Aligning the pins of the overdrive to the interposer socket, firmly and evenly press the
processor into the interposer. There should be a slight gap between interposer and processor.
Reconnect fan to processor.
Remove 486 processor using chip removing tool.
Line the blunt edge of Pentium processor with that of the processor socket in the system.
Once all pins are aligned in the socket, lock socket release arm into place and secure it.
Restart system.
System will boot to configuration error. Boot system to Reference diskette.
NOTE: The processor is labeled 0 MHz on reference diskette configuration.
Save configuration, and Restart the system.
WORKAROUND:
Booting the system to the reference diskette and saving the configuration will correct
the 174 error at POST. No workaround for Diagnostics, and 0 MHz processor speed.
DETAILS:
BIOS and Diagnostic changes are required to fix problem.
There are no current plans to rewrite either.
The system BIOS will incorrectly label processor, but processor will run at proper speed.
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