[parisc-linux] GSP on A500 - Level 14 Alert - Output overvoltage?

[parisc-linux] GSP on A500 - Level 14 Alert - Output overvoltage?

[Carlos O'Donell]

parisc,

Just a quick flitting question that has been in
the back of my mind. When working with an A500
that I have, during a GSP powerdown using "PC", 
I get the following error:

************* SYSTEM ALERT **************
SYSTEM NAME: firin
DATE: 10/19/2002 TIME: 00:24:23
ALERT LEVEL: 14 = Fatal power or environmental problem prevents
operation

REASON FOR ALERT
SOURCE: 4 = power
SOURCE DETAIL: 4 = high voltage DC power   SOURCE ID: FF
PROBLEM DETAIL: 5 = output overvoltage

LEDs:  RUN      ATTENTION     FAULT     REMOTE     POWER
       OFF      OFF           OFF       OFF        FLASH
System Power is Off.

0x002000E544FF404F 00000000 00000000 - type  0 = Data Field Unused
0x582008E544FF404F 00006609 13001817 - type 11 = Timestamp 10/19/2002
00:24:23
A: ack read of this entry - X: Disable all future alert messages
Anything else skip redisplay the log entry
->Choice:

Is this bad for my hardware :} It was ever so 
nice when I was kernel hacking and I could remotely
control the box's power. However, after such an error
I'm told that:


  The system did not respond to the Power-On command.
  Turn the system power switch Off and On again to reset the system.

Which means I need to be there physically :(
Any help on the matter would be much appreciated.

c.

[parisc-linux] Re: GSP on A500 - Level 14 Alert - Output overvoltage?

[Grant Grundler]

Carlos O'Donell wrote:
...
> SOURCE DETAIL: 4 = high voltage DC power   SOURCE ID: FF
> PROBLEM DETAIL: 5 = output overvoltage

this would suggest your site has a voltage regulation problem.
you might get out a DVM and see if that's a persistent problem.

> Is this bad for my hardware :}

I'd think yes. normally the power supplies are designed to handle
something like 5-10% input power variation.

>   The system did not respond to the Power-On command.
>   Turn the system power switch Off and On again to reset the system.

I'd unplug the power too just to be sure it's really reset.

grant

Re: [parisc-linux] Re: GSP on A500 - Level 14 Alert - Output overvoltage?

[Carlos O'Donell]

Grant,
 
> this would suggest your site has a voltage regulation problem.
> you might get out a DVM and see if that's a persistent problem.

By 'site' do you mean 'external AC'? 

I had assumed that the issue dealt with the internal switching
supply doing the damage.

I shall put the system behind a better UPS and see if the problem
goes away. 
 
> I'd unplug the power too just to be sure it's really reset.

Good point.

c. 

Re: [parisc-linux] Re: GSP on A500 - Level 14 Alert - Output overvoltage?

[John David Anglin]

> I had assumed that the issue dealt with the internal switching
> supply doing the damage.

Yes, the message indicated that the problem was with a DC supply
voltage.  If it's internal, this could damage the circuits in the
system.  CPU chips normally have very tight voltage requirements
for proper operation.  I would check the manual to see what is
recommended when this error occurs.  You measure the voltages
on an unused drive connector, etc.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)

Re: [parisc-linux] Re: GSP on A500 - Level 14 Alert - Output overvoltage?

[Grant Grundler]

Carlos O'Donell wrote:
> By 'site' do you mean 'external AC'? 

yes.

> I had assumed that the issue dealt with the internal switching
> supply doing the damage.

hmm...you might be right.

> I shall put the system behind a better UPS and see if the problem
> goes away. 

I'd still measure UPS output just to rule that out.
(Ie something easy to do and something I expect the HW to monitor).

grant