Re: Model 720 needs Dr. Frankenseries' help

[Larry Bolhuis <lbolhuis@xxxxxxxxxx>]

DrFranken is out on Holiday (It's spring break around here) but I'll 
take a stab at it. :-)

Yes it could be the batteries. Pull them out and verify 12v each. There 
are four of them in two pairs. *waytoomany screws to remove but that's 
life, get your 7mm socket and your drill/driver!  If they are weak let 
the fan spin for a day (charging is going on then) and see if they're 
better.

It could be that UPS down there. I have spares if it's dead. Not likely 
though, the good Dr has only blown up one. OK iGor blew one up too but 
hey they weren't using them like IBM says!  Disconnect the short (1ft) 
cable from the back of the UPS to the bottom of the CEC area. If you get 
220v out the PDU plugs in that case the UPS is likely OK and I'd be 
looking at the Power Supply for the CEC.

If it's the power supply (and I'll just bet it is) yer gonna need onea 
them. I have no idea how to check it. Does the thing have four power 
supplies or just two? Me thinks the 2061 didn't have a way to have four 
of them. (Remember only one is on the left side the other three are all 
on the right side)  If there are four you can swap the top one on the 
right for the one on the left to see if that fixes it. If there's just 
one of them I got those laying around too. As I recall replacing that 
isn't trivial but with the drill driver it's not terrible either.

- Larry (For DrFranken)

midrange.com wrote:
> What I have...
> An old 9406-720, not under hardware maintenance.  See also, Anchor, Boat. 
> But, you try to use what you have lying around for $0 to make a test box.
>
> Processor feature 2061, interactive feature 1501 and processor feature code 
> 206B.  It's the one with the "sidecar" expansion and the built in dual UPS 
> batteries on the bottom.  See 
> http://www.usedserversystems.com/images/Used-IBM-AS400.jpg
>
> What I know...
> She's an old gal, but worked fine back in December.  Found a bunch of old 
> drives, and got V5R3 running and then unplugged her for the holidays.
>
> What works...
> When I plug in the 220V line into the power supply, the fan on the supply 
> spins.  Had the facilities guy check the power/cables/etc, everything is 
> hot.
>
> What doesn't...
> No green glowing LCD control panel.  Nothing happens when you press the big 
> white button.
>
> Going thru the Problem Analysis, Repair and Parts, I could have...
> Bad batteries
> Bad UPS/power supply
> Bad control panel
>
> Looking for any clues or tips.  I can probably come up with replacement 
> batteries, but my fear is that it is something more than that and I'd be 
> throwing bad money after bad.
>
> Thanks,
> Brian.
>
> =====
> Brian Dolinar 
>
>
>