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Mac Pro Late 2013 CMOS Battery Replacement

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  1. Mac Pro Late 2013 CMOS Battery Replacement, Outer Case: adım 1, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement, Outer Case: adım 1, 2 resimden 2.
    • Slide the lock switch to the right, to the unlocked position.

  2. Mac Pro Late 2013 CMOS Battery Replacement: adım 2, 3 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 2, 3 resimden 2. Mac Pro Late 2013 CMOS Battery Replacement: adım 2, 3 resimden 3.
    • Lift the outer case straight up off the Mac Pro.

    • It may help to push down on the center of the fan while lifting the case up.

  3. Mac Pro Late 2013 CMOS Battery Replacement, Fan Assembly: adım 3, 3 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement, Fan Assembly: adım 3, 3 resimden 2. Mac Pro Late 2013 CMOS Battery Replacement, Fan Assembly: adım 3, 3 resimden 3.
    • Remove five 5.1 mm T10 Torx screws from around the outer perimeter of the fan assembly.

    You don't have to remove the fan assy to get to the wifi board & card. It can be done with the fan assy still attached.

    Fat Mango - Yanıt

    Fat Mango is correct. That said. If you do pull the fan assembly note that the screws are all held in with blue Permatex and breaking them free takes a fair amount of effort. Getting a good set of Torx screwdrivers is a must.

    Jim WIlson - Yanıt

    Hey guys, what would happen if you only replace one card.. I have a D300 but the plan is to upgrade to D500 or D600. So If I can afford and install one instead of the pair would it increase something? or will it cause any conflict? I guess I don’t understand if I the Mac Pro has 2 D300 graphic cards that means each has 1GB? Same as If I would Install 1 D600 that would increase 3GB only? Thanks.

    marcotamayo - Yanıt

    D300 = 2GB each card. Very few apps uses two cards at the same time.

    Gio Cas -

    The (5) Screws are Apple part number 923-0713

    Steven Gier - Yanıt

  4. Mac Pro Late 2013 CMOS Battery Replacement: adım 4, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 4, 2 resimden 2.
    • The fan assembly is attached to the rest of the computer by two cables on the IO board side.

    • Tilt the assembly up away from the IO board.

    • Do not try to remove the fan assembly yet, as it is still attached by two cables.

  5. Mac Pro Late 2013 CMOS Battery Replacement: adım 5, 1 resimden 1.
    • While supporting the fan assembly with one hand, loosen the two T8 captive screws in the fan cable bracket.

    • These screws are captive in the Mac Pro. Do not try to remove these screws from your Mac Pro.

    On my Mac Pro (assembled mid-2017) these are T8 screws. In fact, there were no T7 screws anywhere in my machine.

    mark33 - Yanıt

    There was no bracket on top of the cable at all, so I got a bit confused, so I had to skip step 5 and 6.

    Rakesh - Yanıt

    On my machine, a TR7 worked to remove them due to the weird angle.

    Wilson Gaberino - Yanıt

  6. Mac Pro Late 2013 CMOS Battery Replacement: adım 6, 1 resimden 1.
    • Use a pair of tweezers to pull the fan cable bracket away from the fan assembly.

  7. Mac Pro Late 2013 CMOS Battery Replacement: adım 7, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 7, 2 resimden 2.
    • Use the flat end of a spudger to disconnect the fan assembly ribbon cable from the IO board.

  8. Mac Pro Late 2013 CMOS Battery Replacement: adım 8, 1 resimden 1.
    • Disconnect the fan assembly antenna cable from the IO board.

    • Remove the fan assembly from the Mac Pro.

    You don't have to remove the fan assy to do the steps below. They can be done with the fan assy still attached.

    Fat Mango - Yanıt

  9. Mac Pro Late 2013 CMOS Battery Replacement, Lower Case: adım 9, 3 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement, Lower Case: adım 9, 3 resimden 2. Mac Pro Late 2013 CMOS Battery Replacement, Lower Case: adım 9, 3 resimden 3.
    • Flip the Mac Pro upside down, 180 degrees.

    • Remove five 5.1 mm T10 Torx screws from the outer perimeter of the lower case.

  10. Mac Pro Late 2013 CMOS Battery Replacement: adım 10, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 10, 2 resimden 2.
    • Carefully lift the lower case up and remove it from the Mac Pro.

  11. Mac Pro Late 2013 CMOS Battery Replacement, Interconnect Board: adım 11, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement, Interconnect Board: adım 11, 2 resimden 2.
    • Use the flat end of a spudger and a twisting motion to gently separate one side of the graphics card data connection.

  12. Mac Pro Late 2013 CMOS Battery Replacement: adım 12, 3 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 12, 3 resimden 2. Mac Pro Late 2013 CMOS Battery Replacement: adım 12, 3 resimden 3.
    • Gently separate the other side as well.

    • Flip the connector up and out of the way of the graphics card.

    • Repeat this procedure on the other graphics card.

  13. Mac Pro Late 2013 CMOS Battery Replacement: adım 13, 1 resimden 1.
    • Remove the two 6.0 mm T8 Torx screws securing the interconnect board to the heat sink.

    These are actually 6.0mm T8 Torx Screws. 12/07/2016.

    Todd - Yanıt

    Ended up being T9 screws for me.

    Nathaniel Wilson - Yanıt

    On my Mac Pro (assembled mid-2017) these are T8 screws. In fact, there were no T7 screws anywhere in my machine.

    mark33 - Yanıt

    These are T8 screws in my 2013 Mac Pro.

    Sangers - Yanıt

    T8 screws for me, i did and edit to this step

    Steve McGinn - Yanıt

    Ended up being T15 screws on my machine

    Spencer Curtis - Yanıt

  14. Mac Pro Late 2013 CMOS Battery Replacement: adım 14, 3 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 14, 3 resimden 2. Mac Pro Late 2013 CMOS Battery Replacement: adım 14, 3 resimden 3.
    • Gently walk the interconnect board straight up off the logic board's slot connection.

    • It is recommended to lift one side and then the other.

    • Do not try to remove the interconnect board from the Mac Pro yet, as it is still connected to the IO board.

  15. Mac Pro Late 2013 CMOS Battery Replacement: adım 15, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 15, 2 resimden 2.
    • Flip the interconnect board up and over, exposing the IO board data cable.

    • Use the same sort of twisting and spreading motion with the flat end of a spudger to separate one side of the IO board data cable.

  16. Mac Pro Late 2013 CMOS Battery Replacement: adım 16, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 16, 2 resimden 2.
    • Use the flat end of a spudger to separate the other side of the IO board data cable.

    • Bend the cable out of the way and remove the interconnect board from the Mac Pro.

  17. Mac Pro Late 2013 CMOS Battery Replacement, Power Supply Assembly: adım 17, 1 resimden 1.
    • Flip the Mac Pro back over and set it gently on a flat surface.

    • We recommend laying the Mac Pro on the corner of the heat sink and the two standoff screw posts that attach to the interconnect board.

  18. Mac Pro Late 2013 CMOS Battery Replacement: adım 18, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 18, 2 resimden 2.
    • Remove the two 3.6 mm T5 Torx screws from the sides of the power supply cage (one on each side).

    those are t4 screws in my mac

    Andrzej Kiryluk - Yanıt

    T4s on mine, as well

    rwcinmsp - Yanıt

  19. Mac Pro Late 2013 CMOS Battery Replacement: adım 19, 1 resimden 1.
    • Remove the power supply cage from the top of the power supply.

    • By removing this cage, you are exposing internal components of the power supply. Be very careful not to touch any of the power supply components or circuitry.

    • Be careful not to drop any screws or tools into the power supply, as this may damage the power supply.

  20. Mac Pro Late 2013 CMOS Battery Replacement: adım 20, 1 resimden 1.
    • Remove the four 5.5 mm T8 Torx screws securing the power supply assembly to the Mac Pro.

  21. Mac Pro Late 2013 CMOS Battery Replacement: adım 21, 1 resimden 1.
    • Remove the power supply assembly from the Mac Pro.

  22. Mac Pro Late 2013 CMOS Battery Replacement, Power Supply: adım 22, 3 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement, Power Supply: adım 22, 3 resimden 2. Mac Pro Late 2013 CMOS Battery Replacement, Power Supply: adım 22, 3 resimden 3.
    • Use the flat end of a spudger to disconnect the power supply DC-Out connector from its socket on the IO board.

    • Use the tip of a spudger to disconnect the power supply data cable from its socket on the IO board.

    • For both cables, make sure to pry straight up on the connector, and not the socket.

    Need to add T9 Torx Screwdriver to list of tools at the beginning of this article.

    htiek nworb - Yanıt

    When I gently pried up on the power supply data cable, the entire socket came right off the board. Now what?

    rwcinmsp - Yanıt

    Bought a new I/O board and got it back together. This little socket is held in only by 4 tiny solder joints. Suggest pressing down on the socket with a finger while gently prying up on the plug that snaps into it. (When reassembling, it presses in vertically.)

    rwcinmsp - Yanıt

  23. Mac Pro Late 2013 CMOS Battery Replacement: adım 23, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 23, 2 resimden 2.
    • Remove the four 9.0 mm silver T10 Torx screws from the sides of the power supply.

    • The power supply overhangs these screws somewhat, so you'll need to use a fixed screwdriver at a bit of an angle.

    I managed to untie the screws at an angle using the T9 screwdriver (instead of the T10) works well.

    Rakesh - Yanıt

    awesome. thank you for the tip!!

    samuel culper - Yanıt

    A T-10 tip used with a 4mm or 5/32” open-end wrench to loosen helps, too. (These really should be hex bolts…)

    MotorMac - Yanıt

  24. Mac Pro Late 2013 CMOS Battery Replacement: adım 24, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 24, 2 resimden 2.
    • Gently shift the power supply to free the AC power inlet cable out of its plastic clip.

    • Be careful not to try to separate the power supply from the IO board assembly just yet, as it is still connected by the AC power inlet cable.

  25. Mac Pro Late 2013 CMOS Battery Replacement: adım 25, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 25, 2 resimden 2.
    • Flip the power supply back to expose the AC power inlet cable.

  26. Mac Pro Late 2013 CMOS Battery Replacement: adım 26, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 26, 2 resimden 2.
    • Squeeze the AC power inlet cable connector and pull it straight out of its socket in the power supply.

  27. Mac Pro Late 2013 CMOS Battery Replacement, IO Board: adım 27, 1 resimden 1.
    • Remove the two 9 mm silver T10 Torx screws securing the IO Board to the IO shield.

    On reassembly, before tightening these 2 9.0mm T10s, make sure the other 4 holes line up. Otherwise you might be setting yourself up for cross threading the 4 remaining 9.0 mm T10 that are already in a bad spot for torquing.

    Might not be a bad idea to put the other 4 halfway in to be sure no resistance, then tighten the 2 in this step, then remove the other 4.

    is - Yanıt

  28. Mac Pro Late 2013 CMOS Battery Replacement: adım 28, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 28, 2 resimden 2.
    • Lift the IO board up from the IO shield from the end with the AC plug.

    • Do not attempt to completely separate the IO board from the IO shield, as there are still two cables connecting the two components.

  29. Mac Pro Late 2013 CMOS Battery Replacement: adım 29, 3 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 29, 3 resimden 2. Mac Pro Late 2013 CMOS Battery Replacement: adım 29, 3 resimden 3.
    • Set the assembly down on a flat surface to access the connectors on the IO board.

    • Use the tip of a spudger to flip the retaining flap on the IO shield ribbon cable ZIF connector.

    • Disconnect the IO shield ribbon cable.

    This step is unnecessary as you can access the battery already.

    Gary Sheppard - Yanıt

  30. Mac Pro Late 2013 CMOS Battery Replacement: adım 30, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement: adım 30, 2 resimden 2.
    • Squeeze and pull the audio jack ribbon cable connector from the IO board.

    This step is unnecessary as you can access the battery already.

    Gary Sheppard - Yanıt

  31. Mac Pro Late 2013 CMOS Battery Replacement, CMOS Battery: adım 31, 2 resimden 1. Mac Pro Late 2013 CMOS Battery Replacement, CMOS Battery: adım 31, 2 resimden 2.
    • Use the tip of a spudger to pry the CMOS battery out of its socket.

Sonuç

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

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11 Yorum

A very good guide. I have a few notes from my experience replacing my battery.

In step 13 the torx screws securing the interconnect board to the heat sink were T-8 on my Mac but T-7 worked.

In step 23 a short arm Torx key would be helpful. Getting them out tore up the heads of the screws and getting back in was difficult without cross threading some of them. Bondhus (model no. 31832) sells a set that might help.

In step 29 if you don't reconnect the power supply data cable completely your Mac fan will run full speed and the processors will max out.

Don Hayashi - Yanıt

Seems like I need to replace the CMOS battery.

Which battery do I need to buy to replace the CMOS battery?

Jan - Yanıt

Yeah, could somebody please post the specifications for the replacement battery and maybe a source for it?

Doctor Macintosh - Yanıt

From the tear down, it's a Long-life BR-2032... I got mine at: https://www.amazon.com/PANASONIC-BATTERI.... Good luck! Great machine!

Wagon Fixin - Yanıt

Yes, the BR2032.

The difference between it and the CR2032 medical battery is the wider heat tolerance range, both extreme heat and cold of the BR. As these are known to get quite hot, get the BR2032.

The batteries in most Macs are easy to replace so substituting the common CR2032 works fine. Electrically, they are identical. The Mac Pro and the late 2009-2010 iMac are a bit time consuming (2009–10 iMacs have the battery on the back of the motherboard) so use the same one that Apple uses.

MikeHalloran - Yanıt

The best price on the BR2032 is this 3-pack.

<url>https://www.amazon.com/Panasonic-Battery...</url>

MikeHalloran - Yanıt

Could anyone explain what issues they are seeing with a dead CMOS battery?

I’ve had a problem booting for a while, having to reset pram and smc every time and try multiple reboots, uugh, I changed CMOS battery thinking it was that and tested the old one which was lo and behold dead. I thought this would fix the issue but it hasn’t. Just FYI I have the same problem with or without a battery in there.

ed9905832 - Yanıt

Hi there. The same for me here, how did you solve this problem ?

Changed for new battery although it is not turning on yet.

Ebd -

Thank You for very good detailed guide but I have problem after reassembly, fan running on maximum speed. I have try SMC reset (1)Shut down Mac, 2) Unplug power cord, 3) Wait 15 sec., 4) Plug in power cord, 5) Wait 5 sec., 6)Turn On Mac) and not worked for me, all is without changes. Mac very lagging and is very slow. I disassembled the mac again, checked all the flex cables and dont’t find any problem with this. Please, is any way how can I fix this? I have searching and testing guides 2 days and now I'm absolutely frustrated, nothing worked. :-( Thank You very much.

David Erben - Yanıt

Ugh! Evil step #23!

I found the short end of a 5/64" Allen wrench worked quite well.

Thorgrim - Yanıt

Thank you for an excellent guide to a tricky enough operation. Phew! Good job that coin cell lasts a few years! As someone else has said, I highly recommend chasing down the BR2032 version that Apple install as OEM, rather than using the more common CR2032. There are good reasons for this - the BR2032 has increased temperature stability and holds voltage better over lifetime. UK folk can get a supply at RS Components here: https://uk.rs-online.com/web/p/button-ba...

One other comment - in the reverse of Stage 23 when re-assembling, please take care aligning those 4 x 9mm T10 screws bolting down the PSU to the IO board. They came out fairly easily, but picking up the thread again properly when putting them back I found very tricky, mainly due to the overhang, and there is a risk of stripping if they don’t go in vertically.

David Gordon - Yanıt

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