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这个拆解是不是维修指南。 要维修你的的iMac Intel 21.5" EMC 2428,请使用我们的维修手册

  1. iMac 21.5 2011拆解步骤, iMac 21.5 2011拆解步骤: 步骤 1 中的图像 1,1
    • 全新 21.5 英寸 iMac 现已配备 Thunderbolt 端口和四核处理器等更多功能。

    • 技术规格的详细信息

    • 四核心的intel Core i5处理器以及6MB的三缓存

    • 西部数据500GB的7200转速的机械磁盘

    • 4GB的系统缓存

    • AMD Radeon HD 的图形处理器(配备了GDDR5显存)

    • 新款雷电接口

    • 802.11n Wi-Fi and Bluetooth 2.1 的无线网卡

  2. iMac 21.5 2011拆解步骤: 步骤 2 中的图像 1,2 iMac 21.5 2011拆解步骤: 步骤 2 中的图像 2,2
    • iMac背后的各类接口信息

    • 有线音频输出

    • 有线音频输入

    • USB2.0速率的接口

    • Firewire 800接口

    • 雷电接口

    • 有线网络输入

    • SD卡槽读取器

  3. iMac 21.5 2011拆解步骤: 步骤 3 中的图像 1,2 iMac 21.5 2011拆解步骤: 步骤 3 中的图像 2,2
    在这个步骤中使用的工具:
    Heavy-Duty Suction Cups (Pair)
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    • 在这里首先我们需要使用可靠的强力吸盘来帮助我们将玻璃面板与前挡板分离。

    • 拆卸玻璃之后,LED 背光光面宽屏显示屏通过数颗 T10 Torx 螺丝固定在前挡板上

    There are four Torx 10 screws on each side of the display. There are other Torx 9 screws in this area - they do not need to be removed, as they hold other pieces, like the camera, to the frame.

    When lifting the display screen, lift it only 30°, or else you'll accidentally pull out either the sync cable, the power cable or more likely, the data cable. You'll want to know where they came from!

    charleslindsay - 回复

  4. iMac 21.5 2011拆解步骤: 步骤 4 中的图像 1,2 iMac 21.5 2011拆解步骤: 步骤 4 中的图像 2,2
    • 我们需要小心翼翼地将 LED 背光显示屏从正面边框的凹槽中拿出来

    • 21.5 英寸(可视)LED 背光光面宽屏 TFT 显示屏支持数百万色彩,最大分辨率为 1920 x 1080 像素。

    • 该 LED 显示器由 LG 制造,型号为 LM215WF3。

    • 这与上一代 21.5 英寸 iMac 所使用的显示屏相同。

    Eu troquei HD mais a tela não está ligando o sistema está ligando estou usando uma tela paralela normal mais a tela do iMac está sem ligar

    Alexandre - 回复

    You left out a bunch of huge steps there. How about some disconnection points?!

    Mattt Potter - 回复

  5. iMac 21.5 2011拆解步骤: 步骤 5 中的图像 1,1
    • 与我们在2011 年初的 MacBook Pro 15" Unibody 中发现的 Thunderbolt IC 类似,iMac Intel 21.5" EMC 2428 也采用了 Intel L102IA84 EFL Thunderbolt 端口 IC。

    • Thunderbolt 声称可为输入和输出提供 10 Gbps 的吞吐量。PCI Express 和 DisplayPort 似乎都有自己的 10 Gbps 数据通道。这一设计很好,因为你不想让显示器与外置硬盘争夺带宽。

  6. iMac 21.5 2011拆解步骤: 步骤 6 中的图像 1,2 iMac 21.5 2011拆解步骤: 步骤 6 中的图像 2,2
    • 断开三根天线并拧下几颗螺丝,AirPort 无线网卡卡就能从插座中自动化弹出。

    • 这次无线通信芯片采用的是Atheros。

    • Wi-Fi 卡的核心是 Atheros AR9388-AL1A 802.11n 无线局域网芯片。

  7. iMac 21.5 2011拆解步骤: 步骤 7 中的图像 1,3 iMac 21.5 2011拆解步骤: 步骤 7 中的图像 2,3 iMac 21.5 2011拆解步骤: 步骤 7 中的图像 3,3
    • 在接下来的几个步骤中,我们将拆除许多与上一台发布 21.5 英寸 iMac 非常相似的组件。

    • WD西部数据 WD Caviar Blue硬盘通过几颗螺丝固定在前挡板上,并一如既往地使用 SATA 数据/电源连接器。

    • WD Caviar Blue 硬盘是一款非标准 SATA 硬盘。电源接口有 7 个插针,而不是标准的 4 个。该硬盘的固件也是非标准固件。这意味着你只能使用苹果自己的硬盘,而不能使用任何标准的售后市场 SATA 硬盘。

    • 注意!拆卸电源需要断开逻辑板上的交流输入电缆。

    • 成功拆下电源后,LED 驱动器电路板随之出现。

    I am an Apple technician and this is incorrect. Any standard SATA drive (SATA, SATAII or SATA3) will work in any iMac. It is recommended you use a SATAII as this is native to the iMac, SATA3 will derate to SATAII and SATA will run only at the drives supported SATA speed.

    Granted the firmware is different on the Apple drive that comes in the machine or in our hard drive upgrades, but the standard firmware with your aftermarket drive will still work as good!

    inthatribe - 回复

    Wow, way to NOT read the description.

    No one is contending an aftermarket drive wouldn't *work*, the issue is that an aftermarket drive causes the fans to run at full-power continuously, because it does not properly inform the fan controller of the drive's temperature.

    Fake Name -

    @ Fake Name “This means you can only use Apple's own hard drives and not any standard after-market SATA drive.”

    I think there’s no other way to read that line except that it is saying that “you can ONLY use Apple’s own hard drives and NOT ANY STANDARD after-market SATA drive.” … which is plain wrong as inthatribe states.

    Passerby -

    Is this a 3Gb/s or a 6Gb/s SATA-bus?

    Joachim - 回复

    This means you can only use Apple's own hard drives and not any standard after-market SATA drive.

    WOW, way to not write a description clearly!

    This in no way implies that an after market SATA drive can be used. On the contrary, it plainly states that one can not be used by the usage of the words “can only use”.

    It would be helpful here to use correct language as well as elaborate about the issue.

    bbc - 回复

    The WD HD is held by just two Torx 10 screws. Remove those and slide the unit out of the two holes at the back, then the two multi-pin connectors are easily removed. When re-assembling. plug in the connectors before locating the unit in the bezel and replacing the two screws.

    John Wallace - 回复

  8. iMac 21.5 2011拆解步骤: 步骤 8 中的图像 1,3 iMac 21.5 2011拆解步骤: 步骤 8 中的图像 2,3 iMac 21.5 2011拆解步骤: 步骤 8 中的图像 3,3
    • 再见了再见了光驱,我们几乎不认识你们...

    • 新款 iMac 配备了索尼 Optiarc 光驱,型号为 AD-5690H。

    • 第三张图片中红色阴影部分应该是安装可选 固态硬盘的地方。阴影区域内的三个安装点在我们的机器上没有任何连接,因为只有主频为 2.7GHz 的 21.5 英寸 iMac 才有这个选项。

  9. iMac 21.5 2011拆解步骤: 步骤 9 中的图像 1,2 iMac 21.5 2011拆解步骤: 步骤 9 中的图像 2,2
    • 音频线输入和音频线输出端口深深嵌入前挡板内。卸下安装螺丝后,我们将整个组件从机箱中取出。

    • 上一代产品遗留下来的另一块红外电路板可以直接从 iMac 的前挡板上取下。

  10. iMac 21.5 2011拆解步骤: 步骤 10 中的图像 1,2 iMac 21.5 2011拆解步骤: 步骤 10 中的图像 2,2
    • 将几颗 Torx T10 螺丝将逻辑板固定到位。很快就能搞定它们。

    • 如果要卸下电路板,必须将它从 iMac 的其他部分蛇形拉出 (左右摇晃即可取出)。

  11. iMac 21.5 2011拆解步骤: 步骤 11 中的图像 1,2 iMac 21.5 2011拆解步骤: 步骤 11 中的图像 2,2
    • 难道是我们的错觉吗?还是主板的布局(带散热片)看起来像是最初的星际战舰

    • 按照苹果公司的一贯做法,两个风扇一个用于 CPU,另一个用于 GPU。

    • 其次按照苹果公司的一贯做法,撕下保修标签,才能窥探到逻辑板内侧的芯片

    • 在内存方面,这款 iMac 可容纳四个 204 针 PC3-10600 SO-DIMM 芯片。

    It looks like they are but I'd just like to confirm that all four RAM slots are still accessible from the grill on the bottom?

    Daniel Trogdon - 回复

    Yup, there's a small access door along the bottom edge of the iMac with three #1 Phillips screws that can be removed to access the four RAM slots.

    Andrew Bookholt -

  12. iMac 21.5 2011拆解步骤: 步骤 12 中的图像 1,3 iMac 21.5 2011拆解步骤: 步骤 12 中的图像 2,3 iMac 21.5 2011拆解步骤: 步骤 12 中的图像 3,3
    • 拆解过程当中我们发现苹果的设计方案很独特。GPU 散热器从逻辑板上分离,露出 AMD GPU竟然是单独的。

    • GPU 上的主要芯片包括

    • AMD Radeon HD 6750M GPU

    • 四个H5GQ1H24AFR T2L 1 Gb GDDR5 SDRAM 芯片(累计总计 512 MB)

    Why would 4 1Gb modules add up to a cumulative 512MB ?

    lz4broc - 回复

    Presumably 4Gbit, so 1/8th of a GByte.

    Googlyhead -

    Or;

    4 x 1024 x 1024 to get the actual number of bits.

    divide by 8 to get bytes.

    Divide by 1024 to convert to MegaBytes.

    (or simplify by removing one multiply and one divide by 1024)

    Result = 512 :-)

    Googlyhead -

    can we replace a higher performance display card?

    louis0619 - 回复

  13. iMac 21.5 2011拆解步骤: 步骤 13 中的图像 1,3 iMac 21.5 2011拆解步骤: 步骤 13 中的图像 2,3 iMac 21.5 2011拆解步骤: 步骤 13 中的图像 3,3
    • 为了科学,我们什么都可以做出来!(首先失去了保修)

    • 打开 CPU 散热片后,我们可以看到酷睿 i5 处理器的全貌。

    • 机器采用四核 2.5 GHz 酷睿 i5-2400S CPU,配备 6 MB 英特尔智能高速缓存

    • 值得庆幸的是,这台机器的 CPU 和 GPU 都贴有适量的散热膏,这与我们最近拆解的 MacBook Pro所贴的大量散热膏相比,简直是天壤之别。

    I may sound silly but can you actually change/upgrade the CPU from the I5 to an I7 by yourself and, with the 27" iMac there are 4 ram slots is this the same on the 21.5" Apple originally said it only had 2 but now they say you can upgrade the 21.5" to 16GB Ram (4x4GB)? Thanks

    Zed - 回复

    For what it's worth, you can now get 8 GB SODIMM ram sticks, so the "Upgradeable to 16GB" specification does not necessarily imply it has 4 RAM slots.

    Fake Name -

  14. iMac 21.5 2011拆解步骤: 步骤 14 中的图像 1,2 iMac 21.5 2011拆解步骤: 步骤 14 中的图像 2,2
    • 逻辑板上的主要芯片包括

    • 2.5 GHz 四核 英特尔酷睿i5-2400S CPU,具有6 MB 的of 英特尔智能缓存

    • 英特尔 BD82Z68 平台控制器集线器

    • BroadcomBCM57765B0KMLG 集成式千兆位以太网和存储卡阅读器控制器

    • Cirrus 4206BCNZ 音频控制器

    • SMSC USX2061(我们认为这是一个 USB 2.0 集线器控制器系列)

    • 用于 GPU 内核电源应用的 Intersil ISL6364 CRZ 单相同步降压型 PWM 稳压器

    • 英特尔 L102IA84 EFL Thunderbolt 端口集成电路

  15. iMac 21.5 2011拆解步骤: 步骤 15 中的图像 1,3 iMac 21.5 2011拆解步骤: 步骤 15 中的图像 2,3 iMac 21.5 2011拆解步骤: 步骤 15 中的图像 3,3
    • 接下来,我们可以从 iMac 上拆下蓝牙板。

    • 值得信赖的 iFixit 虎钳(与我们的铲子采用相同的材料制成,并且防静电)的帮助下,我们拆下了覆盖在小蓝牙板上的屏蔽罩,露出了下面的芯片。

    • 其核心在于

    • Broadcom BCM2046 蓝牙 IC

    • 256 KB SST 39VF200A CMOS 多用途闪存 (MPF)

    • 很久以前,我们就在第一代 MacBook Air. 中发现了同样的芯片。

  16. iMac 21.5 2011拆解步骤: 步骤 16 中的图像 1,2 iMac 21.5 2011拆解步骤: 步骤 16 中的图像 2,2
    • iMac 21.5 英寸 EMC 2428 可维修性评分:7 分(满分为 10 分)(10 分表示最容易维修

    • 正面的玻璃面板和液晶显示屏很容易拆卸,可以接触到下面的所有硬件。

    • 内存、硬盘和光驱的更换相对容易,只要你不介意拆下液晶显示屏(用于硬盘)。

    • 有限的粘合剂(几乎所有的紧固件都是机械式的)使得拆卸非常简单。

    • 更换 CPU 和 GPU 是可能的,但需要从计算机上拆下逻辑板。

    • 拆卸逻辑板非常麻烦,因为你必须断开一堆连接器,然后将它从机器中取出。

    • 在重新组装机器时,要使液晶显示屏和玻璃一尘不染几乎是不可能的。(在试图清除显示屏或玻璃面板上的灰尘时,压缩空气很有用)。

    • 喜欢看到机器的内部结构?看看我们的 iPhone 4s 透明后面板!

    Still lots of messy cables and foil inside... the day that Apple are proud enough to show off the insides of the current iMac design (as they did with the G5 and in the past with the MacBook Pros, MacBook and Mac Mini), is the day the have finally perfected the form both inside and out.

    Mike Hopkins - 回复

    I got lightning stroke through the ethernet/gigabit port. Now the imac won't up. When we looked into the logic board and light it up, there was a green light blink in the board but not all. Is there any chance that the bad ethernet cause it failed to boot? Can we detach the ethernet port off of the logic board? Thank you.

    #we have tried with a good psu, they results the same.

    mark - 回复

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25条评论

In the location you suspect an SSD to reside (in models so equipped) is a spare power connector and SATA cable connector available to add an SSD drive at a later date?

Gregory Cox - 回复

I'd like to know that, too. If so, it would be awesome!

Pierre Minnieur -

I'm dying to know this too! Are there power/data cables in place? Are the mounting points ready to accommodate a drive?

I'm afraid this teardown won't answer these questions. Will you be cracking open a 27" unit?

Cliff Norton -

The cable was not there, but there is an extra standard SATA data socket on the board along with a proprietary power socket labeled "SSD Power". Not sure where you could get the cable to make it work though.

Andrew Bookholt -

In step 11 you mention how lifting the heat sink off will void the warranty.

Surely you have voided the warranty already by now.

Can I open up my brand new iMac, put in a better hard drive and still be within my warranty? I am guessing I would be laughed right out of the genius bar, but if it isn't so .. do tell.

sprockety - 回复

We didn't see any tamper-evident seals on any component other than the CPU heat sink. If you were careful and clean about things, I don't see how they could prove that you opened your iMac and swapped out a hard drive if you put the OEM hard drive back in when you would theoretically take it in for service. I thought it was pretty surprising that they didn't even put a seal on the GPU screws.

Andrew Bookholt -

If you replace the hard drive with another one, you can end with HDD fan blowing at full speed constantly (that is rather noisy).

You will need an HDD with Apple firmware.

Also, get an anti-static brush for cleaning the display and glass.

Yakov Shapovalov -

Is that 204-pin pc3-10600 SO-DIMM chips?

Niklas Saers - 回复

That is correct.

Andrew Bookholt -

Perhaps if you guys want to be 'really' professional, you might consider Anti-static procedures and a pair of gloves next time, instead of acting like complete noobs, by not providing such instructions you just increase the return rates of Mac products, because of idiots following these instructions.

steve B - 回复

Perhaps if you want to sound 'really' professional and not like a total noob, you might consider going back to 7th grade to learn how to properly form a sentence.

Project Mayhem -

And how do you know they didn't follow anti-static procedures? Are you able to psychically determine that the guy in the photos doesn't have an anti-static grounding strap pushed up one arm? Or maybe they're *really* professional, hand have anti-static matting and heel-straps, which don't require putting anything on your arms at all.

Just FYI, this is a *teardown* - that means it's NOT a DIY instruction set, and doesn't bother with discussing safety measures for taking care of your electronic.

Fake Name -

Did you have access to the stand connector (to remove the stand) once you removed the hard drive? Would stand removal be easier on this model compared to earlier models?

John - 回复

I'd like a little more information on the WD Caviar Blue drive. The link shows drives up to 6Gb/s but only 1TB in capacity. I know this is the small iMac but what drive is Apple using in the 27" iMacs that can be upgraded to 2TB drives? I'm also not seeing anything on the WD website that talks about a 7-pin connector. Does the drive actually have an Apple P/N on it?

plink53 - 回复

Could you tell me what the chips are that provide the Firewire 800 interface? (I have had two 27" iMacs, one from Oct 2011 and another from April 2012, both of which suffer from finder lockup every week or two when I leave connected two F800 daisy-chained v3 3TB LaCie 2d Quadra drives. LaCie tech support has told me that "some Macs have incompatible interface chips and some don't". I'm trying to learn more about this so that I can identify an iMac that will not lockup sporadically when used with these external drives.)

Eddie - 回复

Wait, you have finder lockups every week or two?

Unless you just leave the computer on a table and look at it, that's fuċking fantastic. I'm lucky if I can manage a day without multiple finder crapouts. Finder is a terminally şhitty piece of software.

A lock-up per week? Get over it. And remember, Command+Option+Esc is your friend.

Oh, incidentally, LaCie is almost definitely talking out their åss about the "incompatible interface chips". They just don't know what's wrong, and are making something up to get you to go away.

Fake Name -

can i upgrade my iMac (mid 2011) from i5 to i7?? thanks

isaincuiulian - 回复

Hi, my iMac (buyed on refurb) is a EMC2428 but hdd is a Seagate sata2 500Gb

Kristof - 回复

What's the relevance of the SD C2 numbers on the screen? I need a new one and have seen variants of these numbers.

Phil - 回复

I've been looking for a video or tutorial that shows if there is a way to repair the USB PORT, actually is half of them that doesn't work, will I need to replace the all logic board? :(

Guillermo Estrada - 回复

Does it support sata 6Gbps?

JGabriel - 回复

Changing out the hard drive- taking the 500 “Apple” drive out and replacing it with a 1 TB Firecuda hybrid. Do I need to use the fan control software or the OWC adapter connector/board? The Apple drive has the 7 pin interface, my new one does not. Assume it is for the temp sensor?

OK, so probably need the connector fix or fan software? Appreciate an answer. Thanks!

Carl Schultz - 回复

Hello I have the apple A1311. Mid 2011. 21” it is not powering on . When I pu

lug it in to power outlet the1 of 4 led lights on the motherboard light up and when I press the power button it turns off and the computer does not power on …what do you think is the problem?

Jermaine Willock - 回复

Not sure who needs to know this still in 2022 but i pulled my mac out of storage to get my files it booted but was slow now it wont boot or repair disk. I dont have suction cups but a small razor blade on the edge of the front glass can pry a gap for you to grab and pull off. May damage some of your aluminum but in my case i didnt really care the the thing is old.

Patrick Riley - 回复

which ox install this imac 2011

please tell me what version of ox will be installed on it .all my work is on hold . please tell me.

Muhammad iftikhar - 回复

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