clark@randvax.UUCP (John Clark) (03/30/91)
On startup, my Mac plays an ominous, rising-chord tune for a couple of seconds, then promptly goes inert. The screen, which shows the usual blank grey pattern for the first few seconds after powerup, goes black, and the system won't recognize the mouse, keyboard, floppy drive, or hard disk. The hard disk access light blinks for an instant just at the onset of the failure. The interrupt key instantly replays the same notes, as often as the key is pressed; the reset key restarts the machine, to repeat the same dismal sequence. Floppies have to be retrieved with the paper clip (the button-down trick at startup doesn't work; the system never sees the drive). Any ideas what this means? A hardware failure? A RAM chip fault, perhaps? [Hardware is a vanilla IIcx, 8M, Apple internal 80M HD, Apple HiRes 13" color.] Thanks! John Clark clark@rand.org
chai@hawk.cs.ukans.edu (Ian Chai) (03/31/91)
In article <2934@randvax.UUCP> clark@randvax.UUCP (John Clark) writes: >On startup, my Mac plays an ominous, rising-chord tune for a couple of >seconds, then promptly goes inert. The screen, which shows the usual >blank grey pattern for the first few seconds after powerup, goes black, >and the system won't recognize the mouse, keyboard, floppy drive, or hard >disk. The hard disk access light blinks for an instant just at the onset >of the failure. > >The interrupt key instantly replays the same notes, as often as the key is >pressed; the reset key restarts the machine, to repeat the same dismal >sequence. Floppies have to be retrieved with the paper clip (the >button-down trick at startup doesn't work; the system never sees the >drive). > >Any ideas what this means? A hardware failure? A RAM chip fault, >perhaps? > >[Hardware is a vanilla IIcx, 8M, Apple internal 80M HD, Apple HiRes 13" >color.] > >Thanks! > >John Clark >clark@rand.org I have experienced this problem several times in the last few months, and it *always* occurred after I've mucked around with the SCSI devices I've attached to the IIx and so I've concluded that it's a "Your SCSI setup is messed up" announcement. And it goes away after I've fixed the SCSI up right. But you say your only SCSI device is just the internal 80meg? Or are there any other things you left out? If it's just the internal, is there a possibility the internal SCSI terminator's kablooey? (I don't know -- I'm not a hardware guy.) -- Ian Chai Internet: chai@cs.ukans.edu Bitnet: 2fntnougat@ukanvax
tmattox@en.ecn.purdue.edu (Timothy I Mattox) (04/01/91)
In article <1991Mar30.221152.8323@hawk.cs.ukans.edu> chai@hawk.cs.ukans.edu (Ian Chai) writes: >In article <2934@randvax.UUCP> clark@randvax.UUCP (John Clark) writes: >>On startup, my Mac plays an ominous, rising-chord tune for a couple of >>seconds, then promptly goes inert. [...some symptoms deleted...] >>Any ideas what this means? A hardware failure? A RAM chip fault, >>perhaps? >> >>John Clark >>clark@rand.org > >I have experienced this problem several times in the last few months, >and it *always* occurred after I've mucked around with the SCSI devices >I've attached to the IIx and so I've concluded that it's a "Your SCSI >setup is messed up" announcement. And it goes away after I've fixed the >SCSI up right. >-- >Ian Chai Internet: chai@cs.ukans.edu > Bitnet: 2fntnougat@ukanvax Well, Ian, you are close. The startup chime on a Mac II style computer is the result of a hardware test. You hear the standard chord when everything checks out ok. If the self-diagnostics find something wrong, the mac plays a sequence of chords to indicate the particular area of trouble. The original Mac II had a total of 8 startup chord sequence, one being the "all ok" chord. I don't know if newer Macs have additional chord sequences. I have a little program (6K) that demonstrates the chord sequences. I found it on the original Phil and Dave's Excellent CD. I would offer to e-mail it to anyone who asks, but it does not supply any detailed information on what each chord sequence means. It only says things like, RAM test 1, RAM test 2 and Initial Check. One might wonder why Apple would have your computer play music when its broken rather than display an error code. I speculate that it is because on a Mac II, you might not have a working video card and monitor connected, so rather than display a "sad-mac code" the same way as a Mac Plus or SE, it plays the chord sequence. -- Live long and prosper. - Tim Mattox - (email: tmattox@ecn.purdue.edu) (talk: tmattox@en.ecn.purdue.edu)
mingo@well.sf.ca.us (Charles Hawkins Mingo) (04/01/91)
In article <2934@randvax.UUCP> clark@randvax.UUCP (John Clark) writes: >On startup, my Mac plays an ominous, rising-chord tune for a couple of >seconds, then promptly goes inert. The screen, which shows the usual >blank grey pattern for the first few seconds after powerup, goes black, >and the system won't recognize the mouse, keyboard, floppy drive, or hard >disk. The hard disk access light blinks for an instant just at the onset >of the failure. > >Any ideas what this means? A hardware failure? A RAM chip fault, >perhaps? From the sound of your description, it seems you've got a hardware fault, as the rising chord you describe is characteristic of the "Test Monitor" triggering. However, if you wish to confirm this yourself, I enclose a short diagnostic program which you can run (on a functioning mac) to determine which of the diagnostic tone sequences you heard, and what it means. ______________________________________________________________________________ Charlie Mingo Internet: mingo@well.sf.ca.us 2209 Washington Circle #2 mingo@cup.portal.com Washington, DC 20037 CI$: 71340,2152 AT&T: 202/785-2089 (This file must be converted with BinHex 4.0) :$N4TB@GZEh0dD@-ZBh"d!&""3e4$8%08!!!!!!kf!!!!!'U&!3("I`!!$RH!4QG SCfKjH(KSLSU*HCU3!*KDLBYkQSQ)GhQ+R)b,LBZBChGiQ'GiH'H)GRUTHE#VQ'H BGRChL(GQDRGRU)LEJ+b)QDQUQD!*bCUES+Z3!*ZJV)b`ZkQ(UlM!R+UVX,#,ZU" kUCc!LVZUX)QCX*b,bT!!UBQDUJQ3!*N+LS#EQlb3!(bCG5!!!60%9RD(H)Q3!*N *Q3N(!!!!N!!!!!!!!!!!!!#J!!!++L*%9Q9QGSKfGRGhCSKhL)H)#!#C!!N!QC! !Q!!(QCQ3!!!!N!!)!*!!L3#DS*!!K#3!Q`rbK$i`#3rrH9iQ*)iIjSq[Jq,aT0r c2lrU!0cF,eiFZKS82!SD'"IpMh0c&IhpjAVllNemHVNBY20VplPjP1+5(YrIi[" B$"&`T%1EiFVUJ,Vrk2NIIpB#*IarbA[#h%2E`1kNBPlZC2kZ"Xm2lISE6$h@mKV 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