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iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement

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  1. iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement, Outer Base Plate: шаг 1, изображение 1 из 2 iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement, Outer Base Plate: шаг 1, изображение 2 из 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.

  2. iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement: шаг 2, изображение 1 из 1
    • Remove the metal plate from bottom of the iMac G4.

    • The four screws do not completely separate from the metal plate.

  3. iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement, RAM DIMM: шаг 3, изображение 1 из 2 iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement, RAM DIMM: шаг 3, изображение 2 из 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.

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

    douglux - Ответить

  4. iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement, AirPort Card: шаг 4, изображение 1 из 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.

  5. iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement, Removing the Lower Case: шаг 5, изображение 1 из 1
    • Remove the four 28.07mm Torx #15 screws from the lower case.

  6. iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement: шаг 6, изображение 1 из 2 iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement: шаг 6, изображение 2 из 2
    • Open the base by carefully pulling straight off, do not rotate the cover.

    • Open slowly to ensure that no cables are damaged or disconnected.

    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 - Ответить

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

    Federico Jimenez -

    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 -

    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 -

    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 - Ответить

    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 -

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

    douglux - Ответить

  7. iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement: шаг 7, изображение 1 из 1
    • 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.

    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 - Ответить

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

    douglux - Ответить

    What if I remove the grounding cable

    Roman - Ответить

  8. iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement: шаг 8, изображение 1 из 1
    • 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.

    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 - Ответить

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

    douglux - Ответить

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

    Ian Young - Ответить

  9. iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement, Internal RAM: шаг 9, изображение 1 из 1
    • Release the tabs on each side of the module by pulling them away from the internal RAM

    • Once the tabs are pulled the module will "pop" out and you can slowly remove it.

  10. iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement, PRAM Battery: шаг 10, изображение 1 из 3 iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement, PRAM Battery: шаг 10, изображение 2 из 3 iMac G4 15" 700 MHz EMC 1873 PRAM Battery Replacement, PRAM Battery: шаг 10, изображение 3 из 3
    • Use a spudger to gently pull the side of the battery out of the socket.

    • Remove the PRAM battery

Заключение

To reassemble your device, follow these instructions in reverse order.

7 участников успешно повторили данное руководство.

Ryan Kozak

Участник с: 10/10/11

1 675 Репутация

Автор 3 руководств

Команда

Cal Poly, Team 5-32, Amido Fall 2011 Участник Cal Poly, Team 5-32, Amido Fall 2011

CPSU-AMIDO-F11S5G32

4 членов

Автор 8 руководств

5 Комментариев

This is missing a description of re-doing the thermal paste which connects the heat sinks in the top part with the heat sinks in the bottom part. Check elsewhere on the internet for that (don't look at the other battery replacement guide here on ifixit, that one is criminal in how bad it is, I used to be impressed because that guy had the highest reputation in all of iFixit, now I realized he just gamed the system by putting up zillions of low-quality guides, and letting other people clean up the mess behind him.)

This heat thing is important, as your processor will overheat, and cause your mac to crash randomly.

Netmammal - Ответить

Not bad indications, thanks, however the other comment is quite right. It is too important re- doing the thermal paste , as long as in this computer is needed in more parts than any other 'conventional' PC.

More over, once you have opened the mac, I would suggest to change the cpu thermal paste too.

Saying that, my point is that this is the second time I have to change the battery and I have faced a little problem assembling the external RAM (it wont click again) … and I´m still thinking why is mandatory (or at lest it looks like) to removing the external RAM and the airport card in order to open the other part of the computer?

At far as I´m concerned there is not phisical interference with the work, is it?

euato - Ответить

To replace the PRAM battery you only need steps 1, 2, 5, 6 and 10. Or check out this guide instead, which includes the thermal paste step: iMac G4 17 800 MHz EMC 1936 PRAM Battery Replacement

Tobias Smollett - Ответить

Can someone share the battery type. It looks like a 1/2 AA battery, but all of my reference material refers to an Apple part number without any cross-reference to standard battery types.

Can someone who has the ability to do so confirm that it is a 1/2 AA 3.6v Lithium cell? And if it's not, is it some other standard type?

David Charlap - Ответить

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