Introduction

Remplacez facilement la pile bouton BR2032 au lithium (batterie PRAM) de votre iMac

Desserrez l'unique vis Phillips au centre de la trappe d'accès.
  • Desserrez l'unique vis Phillips au centre de la trappe d'accès.

  • Cette vis est captive dans la trappe d'accès.

  • Retirez la trappe d'accès de votre iMac.

isn't it actually pc2-5300s ?

grze - Réponse

La vitre est fixée au cadre avant par quatorze aimants répartis sur son périmètre.
  • La vitre est fixée au cadre avant par quatorze aimants répartis sur son périmètre.

  • Collez une ventouse sur un angle de la vitre et une autre ventouse sur l'angle opposé.

  • Pour fixer une ventouse, commencez par la positionner avec la poignée mobile parallèle à la surface de la vitre. Tout en maintenant légèrement la ventouse contre la vitre, soulevez la poignée mobile jusqu'à ce qu'elle soit parallèle à l'autre poignée.

  • Si la ventouse n'adhère pas à la vitre, essayez de les nettoyer, l'une et l'autre, à l'aide d'un solvant doux tel que le Windex.

At this stage and later handling the LCD I found thin cotton gloves helped to reduce smudges

john31 - Réponse

My GPS unit's car mount suction cup worked nicely here - couldn't find any at the store and didn't want to wait for mail order!

Two cups would make it easier but one is fine if you place it in the center and are careful to pull the panel straight out.

Mathew Hendry - Réponse

Why use suction cups when some finger nails will do the job nicely, though a plastic spudger might work too. Start at a top corner. Prize the glass away from the case and leave finger nails in. Move the other hand along the top edge and then with finger spread peel the screen cover away. Be careful not to twist plastic I suppose, but I've had no difficulties.

damianwise - Réponse

3M Command Strip hooks in opposite corners is another fabulous option when suction cups are not available!

Adam McCombs - Réponse

Tape works fine, here. Search for a YouTube video for a simple look-see.

Richard - Réponse

I didn't have any suction cups, but my pencil sharpener (the kind that suctions to the table) worked great. I put it on the middle and lifted straight up.

Lisa Mac - Réponse

For a quick 'n' dirty alternative "tool" for this step, take a look at IKEA's Stugvik suction hooks: they provide an excellent adjustable grip. Just used it to take apart an EMC2133. Cheers!

hadderakk - Réponse

Suction cups usually available at Home Depot or Lowes, in the flooring section. (They're used to handle large ceramic & stone floor tiles.)

Griff in Fairbanks - Réponse

  • Soulevez délicatement la vitre de l'iMac.

  • Plusieurs broches de positionnement sont disposées sur le pourtour de la vitre. Pour éviter de les arracher, veillez à soulever la vitre bien droit lors de la dépose.

  • Nettoyez soigneusement la dalle LCD et la face intérieure de la vitre avant le remontage, car la présence de poussière ou d'empreintes digitales pourrait gêner la visibilité une fois l'écran allumé.

In order to avoid unnecessary smudges and what not I covered the LCD itself with some plastic wrap while doing the hard drive upgrade. When I reinstalled it all I needed to do was blow off a few dust particles.

robgendreau - Réponse

While you are at it, it is worth cleaning out dust within the case to help with cooling - particularly around the fans and vents.

For the screen I used a lens cleaner from my camera bag. These have very fine fibers and won't leave detritus.

Mathew Hendry - Réponse

Note that the front glass panel is quite light. When reassembling I found it impossible to get the LCD free of dust with the computer lying on its back. I had success with standing the computer up, tilting the LCD down as far as it goes, holding the glass panel upright in front of the computer (about 1 foot away), lightly spraying both the LCD and the back side of the glass panel with compressed air, and then attaching the glass panel (with the computer upright). It took me 5 tries before it was completely clean of dust once the front glass was on.

axel - Réponse

  • Retirez les 12 vis suivantes par lesquelles le cadre avant est fixé au boîtier arrière :

    • Huit vis Torx T8 13 mm.

    • Quatre vis Torx T8 25 mm.

On the 24" EMC2134 there are 3 screw sizes: 6x13, 4x20 & 2x30mm, particular note should be made of their location.

john31 - Réponse

Note for the less experienced.. the case is plastic and the metal coarse thread screws will easily cut a new thread in the hole if you don't line up the screw in the original thread. Do this a few times and the hole will be stripped and the screw no longer tightens.

TIP:- place the screw in the hole and rotate BACKWARDS/counter clockwise (for RH threads) until you hear/feel it click/drop into the original thread then tighten the screw down. rotate it a couple times to get the feel of things. If there is any significant resistance you probably don't have the original thread.

This trick also works on the fine metal thread screws and can help avoid cross threading them.

HIH

Richdave - Réponse

On the 24 inch iMac Model A1225 EMC #2134, the two T8 Torx screws in the middle are the longer of the four total bottom 25 mm screws. Just a note for reassembly.

bhoffs - Réponse

This step is not really explained here with pictures. But you can check this same step in another guide to help you : iMac Intel 20" EMC 2266 Frontblende austauschen

thibault - Réponse

I'll echo Thibault's comment. This guide does not actually tell you when and/or how to remove the bezel! Click on the other guide he linked to see the photo and instructions.

steven - Réponse

Make sure you're ram slot at the bottom is open to remove front frame bezel

edgain99 - Réponse

I think you're missing this step: With the iMac lying on its back screen facing up, grasp the aluminum sides of the bezel and carefully pull it straight up. Then disconnect the microphone cable. Took me a while to figure it out.

Richard Cacciato - Réponse

I found it helpful to use a few lids from spaghetti sauce jars to hold the different screws. I used a sharpie to mark the inside of the lid w/ location taken from or the step number from directions. Then I placed a small magnet under the lid to hold the screws inside the lid in case I accidentally jostle something on the table. Worked great! You can also use a magnetic knife bar to line up the lids in sequential for the project.

tom - Réponse

I cut a hardwood block and drew the outline of the the iMac shape with the base as key. I then drew another two lines at 1/2” and 1” all around from the outline. This done I drilled holes for each screw (12 Outer securing the front bezel to the rear case , and 8 Inner screws securing the display panel to the rear case ). That way I don’t lose any or get them mixed up.

jmadams - Réponse

  • Débranchez le connecteur du câble du microphone, en retirant la bande adhésive si nécessaire.

  • Pour installer correctement le cadre avant, enfoncez le câble du microphone et le connecteur dans l'espace vide à côté du support vidéo.

I avoided this step by just flipping the housing over and having it lay flat on the table. The tape on mine was on really tight, and I risking ripping the wires out of the connector if I messed with it (I didn't have some really small scissors which might have helped removing it). I would suggest either securing the body of the iMac and the housing to the table you're working on, or somehow securing the housing to the body, so that it doesn't move around accidentally, since it's only hanging on by a very thin wire at that point.

robgendreau - Réponse

^^^ This! This tutorial should be amended for this step. Much, much easier and less damage-prone.

(There really oughta be a step addressing the removal of the bezel as well.)

cklarson -

Make sure you do not pull this apart by the wires. Have a firm grasp on the plastic parts. Do not force back together. It only goes back together one way. Also, it is crucial when placing the aluminum bezel back in place that this wire is out of the way. It often gets in the way and is easily damaged.

Kyle Freeman - Réponse

CAUTION - To disconnect the cable, you'll need to support the bezel while you carefully extract slack microphone cable which is tightly tucked within the iMac. (I didn't have this guide's 'notes on' and missed robgendreau's warning - then inadvertently shifted the bezel and busted my microphone cable in this step.)

dagnew - Réponse

Don't forget to pull the microphone cord out before you put the panel back on. Otherwise you will have to go back and remove screws to find that microphone cord

Melvin Hines - Réponse

As robgendreau says, avoid this whole step by opening the bezel and laying it upside down above the iMac, still connected by the mic cord, just carefully. Then replace the battery, suck/blow out your dust, and carefully rotate the front bezel back over the iMac from where you removed it. No cord manipulation or damage at all!

recmsoj - Réponse

  • Utiliser la pointe d'une spatule (spudger) pour ôter la batterie PRAM de son logement.

Note that when you replace the PRAM battery, the system date is reset to 2004.

After rebooting, verify if the date needs to be adjusted.

markp - Réponse

Mine did not reset to 2004, or else reset itself correctly later before I looked at the date.

recmsoj - Réponse

I suggest keeping your finger firmly over tab on the right side of the battery holder. It is extremely thin and must have become very brittle from heat and age. When the battery was pushed towards it and then pivoted up from the left, the tab snapped and pivoted up with the battery. Super glue and reinforcement time.

DwH - Réponse

I ordered a Panasonic BR2032 based on this guide. It took 3 weeks to get it because the company sent a CR2032, and I made them take it back and send a BR. BR2032 in hand, I opened up my EMC 2133 iMac and discovered the PRAM battery was actually a CR2032. And it's a Rayovac (unless I mixed up my batteries). And actually the problem wasn't the PRAM battery, it was a bad cap (420v, 150μF) on the power supply. I just replaced the capacitor, and now I'm wondering: does the brand or chemistry of the PRAM battery even matter? It's hard to find a real answer. It would be appropriate to have that information here.

Fadfax - Réponse

Look at this page https://en.wikipedia.org/wiki/CR2032_bat... CR2032 or BR2032 for the use in the iMac is egual.

Tim -

Conclusion

Pour remonter votre appareil, suivez ces instructions dans l'ordre inverse.

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