Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!killer!pollux!ti-csl!mips!holland
From: holland@mips.csc.ti.com (Fred Hollander)
Newsgroups: comp.sys.mac
Subject: Re: RS Mac II fan upgrade caution
Message-ID: <52096@ti-csl.CSNET>
Date: 21 Jun 88 20:30:52 GMT
References: <12549@apple.Apple.COM>
Sender: news@ti-csl.CSNET
Reply-To: holland@mips.UUCP (Fred Hollander)
Organization: TI Computer Science Center, Dallas
Lines: 49

In article <12549@apple.Apple.COM> wrs@apple.com (Walter Smith) writes:
>
>But I wanted to warn people about the following situation: two of
>three Macs I looked at had Sony power supplies that had nothing to do
>with the instructions posted here, which apparently deal with Astec
>power supplies.
>
So that's the deal.  I just did mine last night.  It was difficult to
verify all of the components described in the instructions.  I did 
verify that the same fan is used.

>The Sony supplies are slightly harder to deal with than the Astecs
>because they have a little PC board mounted above the fan.  You have
>to untwist a metal tab and slice through some silicone cement holding
>the board to the fan, then take the board out.  Also, it's a bit
>difficult to get the fans in and out, due to a tight squeeze between
>the fan and some capacitors.
>
I couldn't believe the instructions said, "It is possible to remove the fan
without removing any components".  I did exactly as you describe.  I didn't
think it was too bad.  I thought I was getting away easy not having to
disconnect and keep track of any more wires.

>However, it's not all bad.  The fan is held in with long screws that
>go all the way through to little brackets on the other side, so you
>don't have to deal with the press-in nuts.
>
>Anyone with some experience playing with the insides of equipment like
>this will have no trouble figuring it all out.  But the posted
>step-by-step instructions are mostly useless--the case doesn't even
>open the same way--so if you were relying on them, check the name on
>your power supply before proceeding.
>
There are two screws at in the back of the power supply on the side opposite
the mounting screws for the fan.  Then the cover pries off from the side where
the screws were.  There are clips on the opposite side and guides halfway
down.  You need to pay attention to the guides when putting the cover back on.
>- Walt
>--
>Walter Smith		Apple Computer			wrs@apple.com
>			Special Projects		(408) 973-4015
>Disclaimer:
>Anyone who thinks I might be representing Apple Computer, Inc. in any
>official capacity on Usenet, of all places, has a serious attitude problem.

Fred Hollander
Computer Science Center
Texas Instruments, Inc.
holland%ti-csl@csnet-rela