简介

本指南的目的是指明LCD面板温度传感器和电缆所在位置,以便在必要时更换

松开检修门上唯一一颗十字螺丝。
  • 松开检修门上唯一一颗十字螺丝。

  • 这个螺丝固定着检修门。

  • 从iMac上移开检修门。

isn't it actually pc2-5300s ?

grze - 回复

  • 玻璃面板固定在前外壳上,周围有十四个磁铁固定。

  • 在玻璃面板的对角线上吸上两个吸盘。

  • 要使用吸盘吸的牢固,首先将吸盘可以活动的把手移动使其与玻璃面板平行。 在轻轻地将吸盘保持在玻璃上的同时,抬起活动手柄直到与另一个手柄平行。

  • 如果您的吸盘无法吸上,尝试使用温和溶剂例如Windex来清洁玻璃面板和吸盘。

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

john31 - 回复

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 - 回复

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 - 回复

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

Adam McCombs - 回复

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

Richard - 回复

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 - 回复

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 - 回复

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 - 回复

  • 小心,竖直的从iMac上提起玻璃面板。

  • 玻璃面板周围有几个定位销。 为了避免将玻璃面板上的这些针脚弄坏,请务必在拆卸过程中竖直向上拉动。

  • 在重新安装之前,请务必仔细清洁LCD和玻璃面板的内部面板,因为当显示屏打开时,你不想被任何指纹或灰尘所困扰。 将玻璃平面放置在干净的铝箔表面上是保持清洁的最好方法。

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 - 回复

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 - 回复

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 - 回复

  • 移除将后壳与外圈固定的12颗螺丝。

    • 8颗13mm T8 梅花螺丝。

    • 4颗25mm T8 梅花螺丝。

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

john31 - 回复

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 - 回复

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 - 回复

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 Front Bezel Replacement

thibault - 回复

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 - 回复

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

edgain99 - 回复

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 - 回复

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 - 回复

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 - 回复

  • 断开麦克风线缆连接插头,如果有必要的话移走胶带。

  • 要确保挡板正常,请确保将麦克风电缆和连接器插入相机板旁边的空白处。

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 - 回复

^^^ 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 - 回复

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 - 回复

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 - 回复

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 - 回复

  • 从逻辑板上径直拉起LCD温度传感器的连接插头。

  • 如果有必要,请将LCD温度传感器电缆从逻辑板背面取下。

  • 当您取出LCD时,请检查LCD温度显示电缆的布线。 重新安装显示屏时,请确保此电缆未阻塞前挡板的底部的一个螺丝。

This was the most confusing step, because the video shows MJ just tilting the monitor open, and I had a ribbon cable hooked up to it. Finally figured out that the ribbon cable was connected to the LCD temp sensor cable, and it was neatly tucked under the adjacent fan. Had to pull it pretty hard to get it out from under the fan, and then could tilt the LCD. Instructions are not completely clear about this, only that you may have to reroute the cable around the motherboard.

d3nn151950 - 回复

I agree, there is no sign of how to remove the bezel (it took me several minutes to understand it was even the bezel that came off here) in these steps (in all the guides for this model, in fact). On step 4 says remove the LCD screws, and suddenly step 6 shows innards and fans etc - !! - What about showing the bezel being removed here - super confusing and not up to usual ifixit high standards.

hutchwilco - 回复

If you rush through the reassembly, it's very easy to miss reconnecting the LCD Temp Display cable. I just did it and one of the fans came on full-speed and stayed there through a new macOS install. Did a Google search and found mention of this symptom. At first I was thinking I switched one or more of the inverter cables but this guide shows that this is not a problem. Once I reviewed this step, the problem was obvious as was the solution. Thanks again, iFixit, for saving my nappy behind.

barryjaylevine - 回复

  • 移除两颗将显示数据线缆固定在逻辑板上的5.3mm T6 梅花螺丝。

My Torx 6 driver purchased from ifixit didn't fit the screws well and potentially would strip them. Had to purchase a better driver to fit better in order to loosen these screws.

kakisback - 回复

reinstalling these screws requires extra care to be sure you don't drop it and loose it under any of the other components.

kakisback - 回复

Make sure not to drop the screws.

ulan - 回复

Removing these screws was the most difficult part of the whole job. They were tight and felt as if the heads were about to chew up. I had to press really hard and jerk the screwdriver counter clockwise to loosen them. Despite others' warnings, I managed to drop a screw when reinserting.

kevinp - 回复

The only tool I needed to buy was the T6 Star Bit - the first auto store I went to had it. These screws are tiny so you have to be careful not to drop them!

James Miles - 回复

When reinstalling these tiny screws, consider placing the iMac upright. That way when you (inevitably) drop these tiny screws, you don't lose them in the guts of the computer where they are likely to fall into a fan.

stown1211 - 回复

Yes, this step is very difficult. I finally used a magnet to magnetize the torx driver, and that helped immensely...however, that was AFTER I lost the right one inside the computer. You really only need one screw to reattach the monitor connector, however.

d3nn151950 - 回复

Argh! I dropped my right screw into the bowels of the iMac. I can't find it anywhere and am loath to leave it rattling around as well as to tear down the machine any further.

steven macfarlane - 回复

Well, I followed the instructions for right-speaker removal and optical drive fan removal and still couldn't find the right screw. I couldn't hear it rattle either so figured it was wedged somewhere. Using an inspection mirror and flashlight, I finally found it. It had fallen down and wedged between the PCB and the plastic housing (below the ports). I was able to slide it toward the right until it came to the void left by the right speaker where it fell out into my hand.

steven macfarlane -

It's true, these were super tight. I only had a T5 which worked on the first screw, but the second wouldn't budge. Ended up filing the tip off the T5 bit - presto! - instant T6.

marcintosh - 回复

I Think the real screw size is 3.5 mm T6 Torx, not 5.3 mm

raul - 回复

Dropped those little bastards like 2-3 times into the deeps of my iMac. The right one is really tricky. If you drop it: better get yourself very thin tweezers and gently shake your mac. :(

Popelnase - 回复

Note that just below where you are working is the PRAM battery. If you have never replaced this, now is a good time so you won't have to open the machine up again in the near future. The battery is a CR2032.

mattgauntt - 回复

Taking all the warnings into account about losing these tiny screws, during removal and replacement I held onto the screws tightly with a very fine needle nose tweezer. Fortunately I managed not to lose them either out or in. I highly recommend using a small gripper during this step.

recmsoj - 回复

This step together with step 8 can be avoided. Leave this cable alone. You will have plenty of space to lift the LCD and rest it against a wall or any other object. Again...

1) don't waste your time if you know what you are doing

2) don't complicate things and remove unecessary cables.

Scorps - 回复

This is true. There's plenty of space to work without taking the whole LCD out, either by resting it on your head, having someone hold it, or propping it on something. This makes steps 7, 8, and 10 unnecessary.

hillman -

While you have the case open this would be a good time to replace the PRAM battery and carefully clean the fan and interior of the case with Q-tips / compressed air.

John Fisk - 回复

These screws are Torx 7 - at least that was what

I used on them and got a prefect tight fit ... .

Patrik Albin - 回复

torx 6 didn't do it, needed torx 7

nielsdolieslager - 回复

Torx7 did NOT work for me. Torx6 did.

pdienstm - 回复

  • 使用插头上面的黑色拉手来将插头从逻辑板上拉离。

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  • 移除8颗将显示面板与后壳固定的12mm T8 梅花螺丝

  • 从显示屏左侧提起显示面板,并将其向iMac的右边缘旋转。

I was able to disconnect the two connectors to the front easily. With those off, I just rotated the LCD out of the way to expose the hard drive. Again, make sure it's stabilized if you do this so that when you yank on something else you don't send it flying.

robgendreau - 回复

I did a HD replacement on my 24 inch iMac. It's basically the same, but it does not have disconnectable invertercables. Instead, there's just one cable that's can't be disconnected. It sits too tight to rotate the display to the degree that you can lean it against something, so the only way to get the job done was to call in an extra set of hands to hold the display while I took out the hard drive.

Marijn - 回复

On the 2134 model, I found that the LCD must be lifted from the RIGHT (not the left as per the 2133 guide) - the connector wires are covered in nylon housing and it's way easier just having someone hold the LCD vertical whilst you replace the HDD, unless you have small fingers and feel like disconnecting completely ...

simon - 回复

During reassembly, make sure that the data and temperature cables will reach their sockets before inserting the eight screws.

kevinp - 回复

  • 当提起显示面板的时候,断开四条变频器电缆。

  • 在重新安装时,将四个变频器电缆连接器放置在连接到后面板的组件之间的空隙中,以使显示面板齐平。

  • 在重新组装时,变频器电缆的顺序可在每个插座内互换。

  • 如果要更换硬盘,需要额外的帮手,来以进入内部并取出硬盘,而不必断开上一步中的LCD温度和显示连接器,只需将LCD支撑起来。

Make sure to not squeeze the inverter-cables between the superdrive and the display when putting the display back on !

epzzky - 回复

This was the only step different for my 2134 - it is just one cable that connects to the monitor - disconnect the monitor end rather than the motherboard side.

Jim Laredo - 回复

There is no need to discnnect the inverter cables if display is positioned against a wall or something of the sort. Make sure it doesn't tumble over !!!

info5825 - 回复

For 24" iMacs, a single power cable is attached on the left side of the screen. To remove the cable, lift the screen from the right side and rotate it to the left. Remove the black plastic protector on the back of the screen and disconnect the cable.

Matt Stichnoth - 回复

Make sure you squeeze the two ends of the inverter cable together firmly - if not you will get yellow areas on your screen. One of my cables had not quite been clicked together, and I had to unscrew everything all over again.

Philip - 回复

So does it matter which ones are connected to which?

That is, at each end there are two connectors (one pink/black the other light blue/dark blue on the "male" side). The "female side appear identical. Does it matter if the pink/black "male" one is connected to the wrong "female" one?

Mark Gibson - 回复

Mark, did you ever get an answer about the connectors?

Mike -

Agreed this is an unspecified issue and i'm surprised it's not covered? Did everyone else just guess?

kainatticus -

Managed to avoid this step just lifting the lcd panel and holding it with my... head ;)

Antonio Bernardini - 回复

I'm trying to find some information on replacing the power supply temperature sensor cable. Mine broke during removal of a bad power supply.

Mike Overholt - 回复

found out that taking the 2 inverter cables (top right corner underneath LCD) and mixing them will not work. I got beeping sound. So...you really need to mark the 2 white sockets with P (pink) and B (for light blue-gray color). Then everything will come out smoothly. Again... inserting the 2 inverter cable sets into the right socket DOES MATTER.

Scorps - 回复

Re: Scorps comment above - I got the “beeping” too. Does anyone know how to resolve it, i.e. identify which goes with which? Other than trying every combination?

mchlgrblsk - 回复

My screen is just Grey? anyone else have this happen?

Michael McGuire - 回复

After replacing iMac’s HDD with a new one I’ve got white screen with vertical black and bluish bands on the left side and two horizontal lines dividing the display into three equal parts (see the image). Any idea what that might be?

Andrey - 回复

  • LCD温度传感器位于显示面板的后面,从后方观察右上角。 它位于黑色箔片的下方,距离面板的顶部边缘约为40mm(1 1/2 in)。

  • 将显示面板朝下放置在干净的表面上,确保面板下方没有任何可能损坏的面板。

  • 仔细切割右上角的箔片上的一小块,并以一定角度轻轻地剥离,露出传感器。 它会有一个泡沫垫粘在它上面。

  • 将泡沫从传感器上轻轻地剥下,露出PCB组件。

  • 传感器用一个小的粘合垫保持在适当的位置,以便将其从一个边缘轻轻地用塑料撬棒或类似物撬起。 我建议不要在这里使用金属工具。

  • 断开电缆以拆下传感器

  • 质量提示安装传感器时,请确保连接器安装牢靠,并且不要将连接器或电缆拉紧,否则可能导致系统重新组装后会分离

I used an exacto knife now the unit turns on but there is nothing on screen and a fanlike sound not sure whats wrong but the adhesive wasnt sticking after i took it off the other screen

jenniferdred - 回复

  • 注意电缆的布线。 它在显示面板的右侧运行,并附着在显示面板上的黑色塑料PSU防护罩的边缘

  • 如果需要更换电缆,请轻轻提起黑色PSU防护罩的右侧边缘,并小心地将电缆从防护罩上的粘合剂背上剥下。

What if break the gaurd? I peeled off but did it rather forcefully ?

jenniferdred - 回复

结论

要重新组装您的设备,请按照该指南并按照相反的顺序重新组装。

2等其他人完成本指南。

特别感谢这些译者︰

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Richdave

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