Subject: mouse-crashes.txt Date: Mon, 13 Jun 1994 15:33:48 +0900 From: Robert Morelos-Zaragoza Dear moderators, ------------------------------------------------------------------------- Someone posted a complaint in the usenet about the title of my previous submission "malaysian-mouse-crashes.txt" and suggested that any reference to "Malaysia" be removed from the text. I must oblige and enclosed is a revised version --------------- PLEASE REMOVE THE ABOVE LINES BEFORE POSTING ----------- Included is information on a crash caused by a defective ADB mouse II and how to solve it. I do not know exactly where you could place this, maybe in info-mac/info or something similar. Robert Morelos-Zaragoza ============================================================================== The startup crashes in my Mac (Centris 650) have been solved. They were caused by a defective mouse. After I replaced the bad mouse with a known good one, the crashes completely disappeared. The technical information of the mouse is as follows: FCC ID: BCGM2706 Family No. M2706 MB3313LFT18 Made in Malaysia The strange thing is that instead of giving somekind of indication of a hardware problem (like starting up with a "melody"), the Mac acted as if it was a software problem. The key to solving the problem was a Technical Note from Apple Computer, Inc. from their gopher site (info.hed.apple.com): "Cure for Jumpy Pointer (8 93)". And since my mouse sometimes got jumpy, I decided to check on it. The note reads: "... A jumpy mouse pointer probably means you have a loose ADB cable (the one that connects your mouse to your keyboard or your keyboard to your Macintosh). To check it: 1) Shut down. 2) Turn the power off. 3) Secure the cable's connections. ..." Lesson: If your Mac is crashing (mouse completely frozen, or momentarily frozen after typing a charater in the keyboard, or mouse gets jumpy), and after following proper procedures for a clean install of software system, the problem reappears, then do the following: 1. Shut down. 2. Turn the power off. 3. Replace mouse. If your Mac restarts OK, then you have solved the problem. I hope this is of help to someone out there. Robert --------- Robert H. Morelos-Zaragoza, Visiting Research Associate Faculty of Engineering Science e-mail: robert@ics.es.osaka-u.ac.jp Department of Information and Computer Sciences voice: +81 (6) 850-3060 Osaka University, Toyonaka, Osaka 560 Japan FAX: +81 (6) 850-3050