How re-IPL AS400 model 150 from front panel

Posted on 2009-12-30
Last Modified: 2013-12-06
We had a power failure yesterday. The old AS400 model 150 stayed up since it's on UPS however the network died on it. Restarting the net didn't work, I lost contact with the machine from the local terminal.

What I'm supposed to do (I've heard) is to re-ipl the machine, whatever that means and from what I understand it can be done from the front panel of the machine.

So now I need to know, how do I do this? It say B N in the display on the machine. Local terminal says 0099 if anything is pressed. Guess the old faithful pulling of the power cord is a bad idea.

Hitting +/- buttons give me these alternatives:
01 Display selected IPL
02 Select IPL
04 Lamp test

The "Select IPL" gives me a wide variety of options, none of which makes sense to me (just two letter combos).
Question by:SimFre
    LVL 34

    Accepted Solution

    Try powering the console (terminal) off for a minute or two and then and then back on.  Is it a twinax-connected dumb terminal?  While powered down, check your physical connections.  Losing network connectivity would have no effect on a twinax-connected dumb terminal.

    If you absolutely can't get a terminal to work, then you can try an IPL.

    You'll need to put the system in MANUAL mode, and press the Power Button twice to power down:

    Use the +/- buttons to navigate to Function 2, then pres Enter.
    Use the +/- buttons to navigate to "M"anual mode.  Lave the IPL source on "B".
    Press the Power button twice to power down manually.
    Once the system has powered down, put the system back in "N"ormal mode (leave it on "B" IPL Source) and press the POWER button once to IPL.

    With a properly-configured system, network, and console, you should never have to do this.

    - Gary Patterson

    Check out my EE profile:


    Author Comment

    It's starting up again now. How long should this usually take?
    LVL 34

    Expert Comment

    by:Gary Patterson
    Varies widely, I'm afraid.

    A quick IPL is probably 10-20 minutes, but since it came down pretty hard, it can take much longer.

    - Gary


    Author Comment

    IPL started the machine back up but not TCP services. Got that sorted out now though. Thanks for your help!
    LVL 34

    Expert Comment

    by:Gary Patterson
    Suggest you modify the system startup script to start TCP.

    - Gary

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