Removing Bottom of iMac G4 15" 700 MHz EMC 1873

はじめに

We will unscrew the bottom faceplate, then remove the base to access the internal components.

必要な工具と部品

手順1 Outer Base Plate

Removing Bottom of iMac G4 15" 700 MHz EMC 1873, Outer Base Plate: 手順 1、 2の画像 1

Removing Bottom of iMac G4 15" 700 MHz EMC 1873, Outer Base Plate: 手順 1、 2の画像 2

Place the computer monitor face down on a safe, harmless surface.
Using a Phillips #00 screw driver, remove the four 6.86 mm screws from the metal plate.

翻訳

手順2

Remove the metal plate from bottom of the iMac G4.
The four screws do not completely separate from the metal plate.

翻訳

手順3 RAM DIMM

Removing Bottom of iMac G4 15" 700 MHz EMC 1873, RAM DIMM: 手順 3、 2の画像 1

Removing Bottom of iMac G4 15" 700 MHz EMC 1873, RAM DIMM: 手順 3、 2の画像 2

Release the tabs on each side of the module by simultaneously pushing each tab away from the RAM.
These tabs lock the module in place and releasing them will cause the module to "pop" up.
Remove the RAM module from the iMac.

翻訳

You to not need to remove the RAM to complete this task.

douglux - 2020年12月13日返信

手順4 AirPort Card

Removing Bottom of iMac G4 15" 700 MHz EMC 1873, AirPort Card: 手順 4、 1の画像 1

Use a spudger to lift and remove the AirPort's antenna connector.
This step is only applicable to iMacs that came with an AirPort card installed.

翻訳

手順5 Removing the Lower Case

Removing Bottom of iMac G4 15" 700 MHz EMC 1873, Removing the Lower Case: 手順 5、 1の画像 1

Remove the four 28.07mm Torx #15 screws from the lower case.

翻訳

手順6

Open the base by carefully pulling straight off, do not rotate the cover.
Open slowly to ensure that no cables are damaged or disconnected.

翻訳

You can skip steps 7-9; there is no need to disconnect any internal wiring or RAM. Crack open the base a couple of inches (it doesn't really rotate, just pull it out), and the PRAM battery will be right under your nose. It's no problem to pop it out with your fingers and put the new one in. Just make sure that you note the positive and negative terminals on the old one, and put the new one in the same way.

whshep - 2013年12月27日返信

No one mentioned the need for thermal paste in the reassembly...

Federico Jimenez - 2014年5月5日

Thermal paste? Where would you put that? As I understand it there's no need for that anywhere other than the CPU/Heatsync

Steven Hatch - 2016年8月15日

There's a post (or block really) that connects the cpu heatsink to the upper part of the metal shell that is just to the right (facing the imac) of the drive door. Upon reassembly it's best to clean the matching surfaces and reapply thermal paste to that upper post.

Joe Pena - 2016年8月15日

what's with the apparent loose black wire visible in step 6 & 7 ?? same as the loose wire just sitting there in step 3 ( which was like that on mine, just loose.....? )

rickcee44 - 2015年6月21日返信

I hear that wire is bluetooth hook up.. my model has the other side but my board doesn't have the hook up... go fig :(

sean - 2015年7月17日

agreed with whshep. I did not disconnect these cables to complete this repair.

douglux - 2020年12月13日返信

手順7

Squeeze the small black tab and wiggle gently to remove the colored power cable.
Do not pull directly on the colored wires.
Do not remove black grounding wire.

翻訳

The black tab is in in the middle of the plug (facing us in the photo.) Pushing not very hard on the top unlatches the bottom.

Matt D - 2020年4月14日返信

I got away with not disconnecting these cables and was still able to complete the repair.

douglux - 2020年12月13日返信

What if I remove the grounding cable

Roman - 2021年11月16日返信

手順8

Grab both sides of the blue connector and firmly pull to remove it from the mother board.
Do not pull directly on the ribbon cable.

翻訳

It's a bit vague. That is, it explains where and how the memory module fits, but most importantly it does not. What type of DIMM memory it has to be and its speed as well as the process of not touching hands with the gold connectors of the memory module

Carlos Sousa - 2018年7月2日返信

I left this connected as well. Was able to complete the repair with it connected.

douglux - 2020年12月13日返信

What is this ribbon called? I need a new one and don’t know where to find one.

Ian Young - 2022年2月5日返信