RE: LAN adapter down on our 510

<trying not to laugh with sadistic glee>

Jim, there's something called "concurrent maintenance" that will flash a
led on the back of the unit where the card is. This is typically used to
tell you if you are really working on the right card. Here's a sample on
a machine with current OS:

STRSST
1. Start a service tool
7. Hardware service manager
1. Packaging hardware resources (systems, frames, cards,...)
9=Hardware contained within package
3=Concurrent maintenance
2=Toggle LED blink off/on

Use option 2 again to stop flashing the LED.
This should tell you if you have some control of the card.
This will not interfere with normal operations. What will is "F9=Power
off domain". That (once you verified the card with 2=Toggle), is how one
powers off a card to replace it while the machine is "hot". See also
"F10=Power on domain" to bring a powered off card back to life.

I find these steps useful to:
- apply certain MF ptf's that require either a restart of the card or an
IPL.
- Kick the snot out of a card running a 3581 LTO1 tape drive. Something
that I used to have to do often enough that I typed up these steps in case
of my absence.
- Remove cards no longer needed to prepare for certain hardware upgrades.
- Restart misbehaving cards.
- Insert new cards.
- Replace malfunctioning cards.


Rob Berendt