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Memory Installation on a PowerMac7100/66

Posted on 1997-01-14
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Last Modified: 2013-11-17
I tried to install 2 16M memory on my 7100/66 this evening, however, i have no idea how to remove the huge unit that holds CDROM, HD and floppy. could anyone give me a detailed, step-by-step procedure ? or tell me where can i get information on the WWW? thanx a lot!!
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Question by:chuc
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kligon earned 100 total points
ID: 1535276
I chickened out the first time I installed RAM on that machine as well. Second time I had no fear however. Here's how to do it. First, you can zap your motherboard if you don't de-static or ground yourself on a metal object before you work on the machine. Just touch the metal on the casing or the power supply to discharge yourself before you touch anything important inside the mac.
The target in this whole operation so you know what you are going for is the RAM slots which are on the board underneath the cdrom drive. You can see them if you really look carefully.

1) Disconnect all the cables.
2) Undo the screw at the back of the machine.
3) Lift off the case by pushing it backwards and then up.
4) Pinch the white plastic holder which is loosely keeping the power supply from flying out of the case. Remove the power supply just by pulling it out.(I'm doing this my memory so some steps may be vague. Go with your instincts and you will be fine. Not much to mess up in this whole procedure if you don't use severe force) Now remove screws which are holding the metal casing of the CDROM and HardDrive in place. I think there were about two or three screws which were facing the top of the machine.
5)Should now have room to disconnect most of the cables. They will be pretty sticky so some moderate force is required. Hold the connectors at the edges so as to not damage them.
Remember where they go(shouldn't be too hard in this case) Some connect underneath the casing supporting the CDROM and HD so you may need to lift tilt the casing and CDROM/HD up and backwards to remove it carefully from the unit. You can get it free enought to undo the rest of the connectors which are underneath the casing and then remove it completely from its hinge at the back of the computer.
7)Should now see the RAM slots at the front of the machine.
8)there are two groups of slots which are numbered something like A1 etc. Put one each into the corresponding slot on each bank. They should not both be in the same bank or group. Start with the A labelled slot first.
9) The RAM will insert easily if you tilt it 45 degrees to the horizontal and then tilt it into the slot until it clicks into place and the side clips are properly holding the RAM in place. This step requires cation cuz you can damage the clips slot, or RAM if too much force is used.
10) Replace everything in the order that you removed it.
11) Check to see that the RAM is recognized under the About this Macintosh under the Apple Menu.
Hope this helps even though it is a little weak due to my poor memory.

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