6F1 workstation does not boot


Product		Brisque^® 4.1 Brisque 5 Brisque Serve 4.0
Platform		6F1–Condor (2, 4 and 6 CPUs)
Operating system		IBM^® AIX^® 4.3.3 or IBM AIX 5

Error		`! 101100AC`

Symptoms		When you turn on a 6F1 workstation, the system does not boot after the OK message appears. After you push the On button, an orange exclamation mark and the `101100AC` code appear on the front panel. The IBM Service Manual says “AC power loss or brownout detected”, that the error message is informational only, and that no FRUs are recommended.

Cause		The 120 In power was OK, but it measured at 1.5 VAC GND to Neutral, instead of the expected 0.3 VAC GND to Neutral. When the 6F1 workstation was plugged into a 0.3 VAC GND to Neutral power socket, the workstation turned on smoothly.

Solution		Measure the incoming power and GND to Neutral voltage and verify that it is correct.

Technical contact(s)		Lev Weissman
Submitted by		Lev Weissman
Date submitted		29 Dec 2003