On Thu, 28 Oct 2010 23:32:34 +0000, Bill Long <[log in to unmask]> wrote:

>Have a 927lx that was experiencing boot problems due to Opsys not holding
the system date.

The 9X7 uses a clock chip with an internal battery.  I'm guessing that might
have been your initial problem.

>I received this error message - Cannot verify deassertion of POW-ON signal.
>Console/Lan card, system backplane or SPU defective.

"Cannot verify deassertion of POW_ON signal. (APERR 02)
The AP did its best to de-assert the POW ON signal, but doesn't see it
de-asserted when reading it back. The circuitry that pulls on the line might
be broken, or the circuitry used to read back the line might be broken. In
any case,this is a major failure. Call your HP representative . . ."

Recheck your connections and make sure everything is tight and you didn't
bend any pins.

For those of you with 9X7s, you're living on borrowed time (get it? 
probably not ... you guys have no sense of humor).
The RTC is a DS1287 and is on the backplane.  HP decided to save a few cents
and solder the chip instead of socketing it.  

http://www.flickr.com/photos/lee_courtney/4819373947/
http://www.flickr.com/photos/lee_courtney/page11/
(page11 is current as of today)
Thanks for the pics Lee.  How you doing?

The easiest thing to do is replace the backplane with one that has a working
clock, but you will run into the same problem in the near future.

Or you can replace the chip.  The DS1287 isn't made anymore, so anything
available is used or NOS.  Try ebay.  The DS12887 is supposed to be a direct
replacement.  DS (Dallas Semiconductor) is now Maxim-IC.

Or you can rig a battery.  One example:
http://www.mcamafia.de/mcapage0/dsrework.htm

Or you can upgrade.  Call me. ;)

>
>Thanks to Jack Connor determined that it was the power supply battery. The
6volt re-chargable.
>Ordered a new battery and installed it. Tried powering up the machine and
that's when a new set of
>problems emerged. It sounds like a drive is spinning up but it only lasts
for about three seconds then the
>sound stops and nothing further happens. The console doesn't display the
startup system check at the bottom of the console.
>
>The one time I actually got it to spin all the way up (don't remember the
circumstances, I've had the machine apart so many times) I received this
error message - Cannot verify deassertion of POW-ON signal.
>Console/Lan card, system backplane or SPU defective.
>
>The only thing I can think of is I blew a fuse somewhere, either on the
power supply or the AC line.
>I can see a green LED lit on the internal drive.
>
>Question - is there a fuse on the power supply or on the line and if so
does anybody know where it is?
>I went through the CE manual and I can't really find any good info on fuses.
>
>ps: I re-installed the original battery to see if it would at least get to
the CM prompt like it used to but it doesn't.
>That's what makes me think maybe I blew a fuse.
>
>Everybody, thanks in Advance.
>
>Bill
>
>
>
>
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