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- From: dcb@kopachuk.uucp (David Breneman)
- Subject: Re: HELP 3b2 dead
- Message-ID: <1992Sep8.175311.2680@kopachuk.uucp>
- Keywords: 3b2 boot
- Organization: Tacoma Screw Products, Inc.
- References: <regmad.715453158@gsusgi1.gsu.edu> <1992Sep3.194154.505@kopachuk.uucp> <regmad.715623743@gsusgi1.gsu.edu>
- Date: Tue, 8 Sep 1992 17:53:11 GMT
- Lines: 91
-
- In article <regmad.715623743@gsusgi1.gsu.edu> regmad@gsusgi2.gsu.edu (Michael de Kraker) writes:
- >
- >Perhaps I should be clearer her the system was acting normally when I
- >hit the switch to standby.... The system has not come up since.
- >
-
- I asked...
- >>Did you try pushing the reset button several times when the Diagnostics
- >>light comes on? That sould get it into firmware mode.
- >
- >Yep an nothing no garbage or anything.
- >The power and diag lights come on no flashing hard disk spins up and then
- >NOTHING!!!!! no firmware no UNIX.
-
- Interesting. Did you replace a feature card or anything? If a card
- has been added or removed the system does a filledt and this adds
- *considerably* to the time it takes to reboot. If you hit the soft
- power switch while it was booting you might have confused it :-) .
- You might try unscrewing the card cage from the chassis, lifting it
- up to expose the battery plug on the mother board, and unplugging the
- battery for a good minute to reset the NVRAM. Then put it back
- together and reboot it. This is just a shot in the dark, though.
-
-
- >> Do you mean that you get the message "INIT: new run level 0"
- >>(not sure of exect wording - but you know it if you see it) or do you
- >>merely get a flickering of the cursor? If you just get a flickering
- >>of the cursor, the console port baud rate may have been changed.
- >
- >Yes I got the message once just before the system shutdown as a result
- >of the my impatience and hitting the switch to standby.
- >The word Flashes was meant to portray the fact that after I hit the
- >big red switch to standby, the system came up and right back down.
-
- So it shut down normally, then wouldn't come back up? Stranger and
- stranger... Another poster mentioned to look for a pattern flashing
- on the "Power" LED. I think I remember you mentioning that you did
- not see such a flashing pattern, but that both the Power and Diagnostic
- light stayed on steady. This is usually a sign that it *is* in
- firmware mode. I can't help but think that it's a fault with your
- console or its wiring.
-
- >Again I tried several terminals at all settings and have always been aware
- >of the port requirements.
-
- How inconvenient for my diagnosis. :-)
- Still, as the system boots, it checks 1) Processors, 2) ROM, 3) NVRAM,
- 4) RAM, 5) IDUART all before it even looks to see if a console is
- attached or turns on the orange DIAGNOSTIC light. If any of these it
- bad, it will flash a multi-flash error code on the Diagnostic LED.
- 1 flash = Unknown problem. 2 flashes = CPU. 3 flashes = ROM. 4
- flashes = RAM. 5 flashes = DUART. (Then it goes through 6) Self-
- Configure, 7) Disk Sanity Check, 8) FILLEDT, 9) DGMON, 10) boot /unix,
- and if it cannot write to the console during any of these stages,
- flashes a single-flash error code on the Diagnostic LED.) Now, if
- both LED's stay continuously lit at all times (except the initial
- flickering of the Power LED when you first push the switch), "The Book"
- says "Reseat memory boards, I/O backplane. Remove feature cards. Try
- to reboot. Disconnect battery and reconnect, then reboot. Swap first
- memory card." If the Diagnostic light comes on, then goes off after
- a moment, the trouble is non-communication with the console.
-
- > The death of the 610 terminal may have been
- >a clue. Possibly the console circuitry is fried on the 3b2 end killing my
- >terminal or vice versa.
-
- I think this is highly improbable. However, the *terminal* may have
- damaged the *mother board*. Still, I've never heard of that happening.
-
- Talk of damage to the mother board...
-
- >I suspected this but wholesale replacement of the mother board is not fixing,
- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- >it is replacing. I have no source for a mother board either. Where can I get
- >one. Maybe it is the power supply what are the voltages and test points????
-
- Well, I'd say its a pretty drastic step to decide to start diagnosing the
- board chip by chip. Even AT&T doesn't do that, except to strip the
- board, test the major chips and reassemble new boards with the ones
- that pass muster. The current issue of Unix Today has an ad for
- Delta Technologies (800-22DELTA) with AM2 motherboards for $199 (this
- is not an endorsement - usual disclaimers). I'm sure Computer Horizons
- (614-847-0400), Lakewood Computer (303 493-6406) and other 3B2
- resellers have similar prices.
-
-
- --
- David Breneman Sys Admin, Tacoma Screw Products, Inc. | ____ ____ ____
- dcb@tacoma.uucp | SCREWIE the TSP CLOWN sez- | / /___ /___/
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