AS/400 270 expansion unit

20 pts.
Tags:
AS/400
Activate expansion unit fails, now it won't try. I have a back up machine I transported. It won't ipl due to a failure of one of the drives in the expansion unit. I disabled the expansion unit with the control panel, still fails, I want to re-enable to get the hard error, I can't remember which code enables it on the control panel.

Software/Hardware used:
as400 270 9406 with expansion unit ?4713 6 36gb hard drives

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The problem is with the power supply.  There are two, one in the system unit, one in the expansion unit, the power supplies are identical(one sits on the bottom, the other on it’s side, but the form factor & connectors are identical).  I swapped the power supplies, the SRC code followed the power supply.  I see two options, find a rebuilt power supply(this is proving difficult at best)or decommission the expansion unit.  Removing the cables is easy, telling the AS400 not to look for the ESU may prove more difficult,  I will update when I solve the puzzle.

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  • Yorkshireman
    go to the Midrange list - people there know all about this - they do it (did it) for a living.)



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  • excellentrandy
    The problem is with the expansion unit. The system is looking for the data that is in the disk in the expansion unit. First, power off the system (as well as the expansion unit), reset the cards, cables and even the disks. Put them back after a minute and try to power up the system. I hope it will work now. 
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