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Article View: comp.sys.mac
Article #45923

Re: Apple Extended Keyboard Problem (ADB)

#45923
From: Gary Davis
Date: Fri, 09 Feb 1990 16:38
28 lines
1833 bytes
From article <40636.25D1A07A@cmhgate.FIDONET.ORG>, by Ed.Edell@f563.n107.z1.FIDONET.ORG (Ed Edell):
>> On several occasions my ADB Extended keyboard has gone dead. When I
>> reboot, everything seems fine. What's the problem?
>   
> Happens to me- Usually, its the connecting cable getting pulled just loose 
> enough from the keyboard that does this. One drawback to the 'new' ADB
> type connections, vs. the 'old' modular-phone-cable-connection that was
> used on the MacPlus and earlier. Most of the time I can just unplug the
> cable from the keyboard, and plug it back in, but sometimes I have to
> reboot to make it all okay again.       -Ed

This happened to me last night. It was the first time after using the
keyboard for more than two years. 

I have my Mac II and an external hard disk plugged into a switched
outlet bar. I usually turn on the main switch, then hit the
start button on the keyboard. This time I happened to do the
two pretty much simultaneously. Something (the Mac, the monitor,
the keyboard?) let out a loud hum I had never heard before and
the keyboard was dead after the machine booted up. Rebooting
fixed it.

The mouse, connected through the keyboard, still worked when the
keyboard didn't, so I doubt a loose cable was the cause in my
case. Perhaps some kind of electrical surge confused the 
logic circuitry (in the keyboard?).

Gary Davis
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From: gdavis@primate.wisc.edu (Gary Davis)
Newsgroups: comp.sys.mac
Subject: Re: Apple Extended Keyboard Problem (ADB)
Message-ID: <1576@uakari.primate.wisc.edu>
Date: 9 Feb 90 16:38:50 GMT
References: <40636.25D1A07A@cmhgate.FIDONET.ORG>
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