topic Re: EOS-1d Mk3 Mirror stays up error in EOS DSLR & Mirrorless Cameras

EOS-1d Mk3 Mirror stays up error

SaxonTony — Tue, 27 Feb 2024 17:02:27 GMT

I am sure this must have been discussed before.

I have had my Mk3 from new around 2009 and it has not had much use and is still in mint unmarked condition.

However after about 3 shots the mirror stays up and i have to switch it off for it to go back down and then switch on again to use, until it stays up again.

I have used it like this for years but no I want to fix it so does anyone know what I need to do to correct it!

its 559799

Re: 1d Mk3 Mirror stays up error

jrhoffman75 — Tue, 27 Feb 2024 12:35:33 GMT

Canon Support | Service Notice: EOS-1D Mark III/EOS-1Ds Mark III: Abnormal Mirror Operation (Err 99) | Canon U.S.A., Inc.

The 1D Mark III has reached the end of the Canon repair period, so I don't know if you will be able to get this resolved.

Products that have reached the end of the repair period | (canon.jp)

Re: 1d Mk3 Mirror stays up error

ebiggs1 — Tue, 27 Feb 2024 16:01:54 GMT

"... I don't know if you will be able to get this resolved."

At Canon he means. There are other repair shops that can service it. But first you have done a complete reset? Complete??? There is a date/time battery (CR2025) which maintains the camera's date and time and settings. Its service life is about 5 years so replace it. Also a new main battery Canon brand if possible.

If it still misbehaves then it truly needs service. The problem is parts not finding a repair shop. Parts will be difficult.

Try Camera Repair Center Inc.

Re: 1d Mk3 Mirror stays up error

ebiggs1 — Tue, 27 Feb 2024 16:04:37 GMT

Again I can't stress enough the complete reset and new batteries. That's why I am posting this again. You have to do this first. When you replace the button battery take your time doing it. Even let the camera sit for a few minutes to completely drain it.

Re: 1d Mk3 Mirror stays up error

SaxonTony — Tue, 27 Feb 2024 16:31:19 GMT

Im embarrased to say that I dont know where the button battery is? can you kindly tell me?

Re: 1d Mk3 Mirror stays up error

SaxonTony — Tue, 27 Feb 2024 16:32:47 GMT

and its Err 99!

Re: 1d Mk3 Mirror stays up error

SaxonTony — Tue, 27 Feb 2024 17:00:28 GMT

found it - the cr2025 is out now for the first time since it went in at the factory!

Re: 1d Mk3 Mirror stays up error

normadel — Tue, 27 Feb 2024 21:53:16 GMT

Do you have the manual for the camera? Page 188 shows where the clock battery is.

If you don't, download it from https://www.usa.canon.com/support/p/eos-1d-mark-iii

You can also find on eBay printed manuals, both the factory-supplied book and printed 7 bound 8.5x11 copies.

Re: 1d Mk3 Mirror stays up error

SaxonTony — Wed, 28 Feb 2024 08:55:57 GMT

I found it and replaced it with a new duracell 2025, I waited an hour between taking the original battery out and putting the new one in.

I did manage 30 photos before error the first time and then only 3 photos on the second attempt - so no improvement.

I have ordered a new main battery to see if that helps.

Re: EOS-1d Mk3 Mirror stays up error

SaxonTony — Wed, 28 Feb 2024 10:31:56 GMT

Update - changing the CR2025 did nothing - so the 15 year old cr20205 was still ok!

When my main battery is charged up 3 green lights on the charger and I press calibrate - it drops to 2 green lights! so maybe my main battery is the problem ( i have ordered a new main battery already) just waiting for delivery.

Re: EOS-1d Mk3 Mirror stays up error

jrhoffman75 — Wed, 28 Feb 2024 11:50:08 GMT

1. If the camera was saving date and time the button cell was still working. That’s its only function.
2. You said it’s been going on for years, so it’s probably not due to the battery.
3. E99 is not a discrete error code. When searching for a repair shop be sure to check if they are aware of the original 1D Mark III problem.

Re: EOS-1d Mk3 Mirror stays up error

ebiggs1 — Wed, 28 Feb 2024 15:17:49 GMT

The new battery(s) and complete reset are basically all the average person can do. If none of these simple tasks help then the camera truly needs service by a qualified repair shop.

Re: EOS-1d Mk3 Mirror stays up error

ebiggs1 — Wed, 28 Feb 2024 15:22:00 GMT

"When my main battery is charged up 3 green lights on the charger and I press calibrate..."

The charger discharges the main battery before it can do the recalibrate which is only mildly successful. It is best done when you put an already discharged battery on the charger.

Re: EOS-1d Mk3 Mirror stays up error

ebiggs1 — Wed, 28 Feb 2024 15:23:20 GMT

If error 99 only happens with one lens it can mean the lens is faulty. If it happens with any and all lenses then the camera is faulty.

Re: EOS-1d Mk3 Mirror stays up error

ebiggs1 — Wed, 28 Feb 2024 15:27:55 GMT

"I found it and replaced it with a new duracell 2025, I waited an hour between taking the original battery out and putting the new one in."

If you left the button battery and main battery out for an hour you probably did complete a full reset. Besides date/time the button battery saves your settings. Actually it is better called a 'keep alive' battery as it saves nothing itself.

Re: EOS-1d Mk3 Mirror stays up error

SaxonTony — Wed, 28 Feb 2024 15:42:02 GMT

I have updates- I was using my 24-105 F4L so tried my 85mm F1.8 - still got the error - but I have read the canon page on it which say I dont need to switch off or remove the battery - just press the shutter button half way - and that works - so Im happy to carry on using it that way.