Category Archives: Photography

Mac Pro 2009 Part XXIII

Replacing the backplane board.

For an index of all my Mac Pro articles, click here.

A 2009 dual CPU Mac Pro I was recently upgrading suffered from very long boot times sometimes refusing to boot at all. PRAM and SMC resets made no difference. This behavior prevailed with a variety of memory sticks, boot drives, processor cages/CPUs and graphics cards, so I consulted the excellent Apple Technician’s Manual and conducted a battery of diagnostic tests to determine the problem. The Mac Pro comes with a host of diodes on the backplane board (‘motherboard’ in Hackintosh/PC language) and after going through many of the diagnostics the conclusion was that the backplane board was to blame. This is a process of exclusion – the diodes can confirm the Airport and Bluetooth cards, GPU, power supply, memory and CPUs are fine, leaving only the backplane board as the culprit.

Many vendors stock the part, number 661-4996, and DV Warehouse had the best price at $344 + CA tax and shipping for a new one.

You really need the Technician’s Manual to replace this part, as pretty much everything else has to be removed from the chassis to grant access for backplane board removal and replacement. That said, it’s not difficult, no special tools are needed (unless you call a 2.5mm Allen wrench for the processor cage slider bolts exotic) and but for one error in Apple’s Manual, the task is easily completed in one hour.

The error? Apple misstates the number of Allen screws retaining the backplane board to the chassis at nine. It’s ten and if you do not find the tenth, that’s all she wrote.

Here are their instructions:

Here are the actual locations of the three types of screw openings in the backplane board:

Green are the openings for the captive processor cage screws. This is important to know as the regular backplane board retaining screws will fit these openings just fine, thank you, making replacement of the processor cage impossible …. Yellow are the two openings for the PCIe fan assembly. And red denotes the ten retaining screws for the backplane board. Apple misses this one in its instructions:


The ‘missing’ backplane retaining screw.

For the Airport and BT cards be careful to unclip the fragile antenna wires from their routing retainers (one retainer for Airport, two for BT) before removing the backplane board. Once the processor cage and PCIe fan are removed you have only to unclip four connectors (top left), the backplane board to front panel switch assembly cable (reversible and keyed) and the power supply to backplane board cable.

Result? The Mac Pro sounded the chime and booted first thing. From chime to login screen takes 21 seconds booting at SATAII speeds from an SSD in the optical drive enclosure, and 16 seconds with a SATAIII SSD located in an Apricorn card in one of the PCIe slots.

The backplane board replacement confirms, once again, that beauty is far more than skin deep in the classic Mac Pro. The 2009 single CPU and dual CPU Mac Pros use identical backplane boards.

Airport and Bluetooth antenna connectors:

These can be a major pain and cause of bad language or a piece-of-cake. The Airport card has two antenna connectors (the third remains shielded and unused) and the BT card has one – all three must be pulled when transplanting the backplane board, above.

Attach the Airport card to the backplane board with two screws if previously removed or missing. The Airport card was an extra in 2009 so many Mac Pros of that age come without one. They can be found for under $30 – buy one with the two screws required. (The BT card is captive and needs no insertion – a new backplane board comes with one installed). The wrong way to attach the antenna connectors is using fingers or pliers. Your chances of damaging the card, the connectors or yourself are high. The right way is to twist the antenna cable(s) such that the brass connectors take a natural set facing down. Then locate and hold the antenna connectors with a fingernail, pressing on the center with a flat bit in your screwdriver, like this:


Tool to push down the antenna connectors.

The flat end of a chopstick works well also, and you will hear a loud ‘click’ when the connector engages. Use bamboo, not softwood – bamboo is far tougher. If force is needed you have the connector misaligned – it’s easily crushed so be careful. The Airport card is retained by two very small screws and need not be removed when moving the backplane board. The BT card is captive. I suggest you replace all three antennae before replacing the processor cage – more working room.

Panasonic GX7 firmware update

Getting updated.

A friend of the blog (thank you, NM) dropped me a line reminding me that there was a body firmware upgrade available for the splendid Panny GX7, two of which bodies call chez Pindelski home. You can download it here.

The update is simple; after downloading the ‘GX7V13.bin’ file, drop it into the root directory of your SD card, insert the card in the camera and after powering up hit the ‘Play’ button and wait. The GX7 will refuse to proceed if your battery indicator shows less than absolutely full. The update takes maybe 4 minutes during which time you must not touch any controls and the front orange LED glows merrily. And just in case you are in any doubt, Panny gives you the message in less than the Queen’s English:

Be sure to reformat the SD card in the camera once done, thus erasing the .bin file.

Here are the stated benefits:

I can attest to the iPhone connection issue in v 1.2 and I have had no connection issues to my iPhone5 with the latest firmware upgrade. So it’s a worthwhile upgrade. Neither of my GX7s had an issue with the upgrade process.

As for UHS-I cards, Wikipedia defines these latest fast cards thus:

“UHS-I cards, specified in SD Version 3.01, support a clock frequency of 100 MHz (a quadrupling of the original “Default Speed”), which in four-bit transfer mode could transfer 50 MB/s. UHS-I cards declared as UHS104 (SDR104) also support a clock frequency of 208 MHz, which could transfer 104 MB/s.”

I don’t own any and I’m in no hurry to do so, but it’s nice to know the technology is supported.

MacBook Air 2014

Another worthwhile upgrade.

I just upgraded my MacBook Air to the 2014 model and commend it to you. Most of the press out there has cynically dismissed the CPU speed bump from 1.3GHz to 1.4GHz as irrelevant, though the drop in the price of the 4GB/128GB base model (mine!) of $100 to $899 has been rightly welcomed.

Well, those writers are dead wrong. The speed increase on CPU tasks as measured by Geekbench is significant:

2014 compared with 2013.

In my book that’s a 22% CPU speed gain despite a spec gain of just 8% in CPU speed. That’s very impressive.

GPU speed?


Cinebench GPU comparisons – 2014 vs. 2013.

A 21% speed gain. Not trivial.

The MacBook Air remains the best value laptop for road use, weighs 50lbs less than a real Mac Pro (not the poncy cylindrical version) and runs PS CS5 and LR5 just fine if not as fast as the behemoth. For road trips it’s all you need.

And it commands a 70% of cost resale value 12 months hence. Try that with your garbage Windows laptop.

For comparative data on the 2013 MacBook Air click here.

Highly recommended.

Trust

And you trust Adobe why, exactly?

“A serious outage has taken login functionality offline for almost 24 hours, leaving subscribers to Adobe’s Creative Cloud unable to access their accounts or do much of anything else – including downloading new apps. As yet, Adobe has been unable to offer any indication of how long the outage will last, but a message on the CC homepage states that the company has ‘identified the cause [and is] working to restore the service as quickly as possible’. ”

This from the company which recently had its crown jewel stolen – its Photoshop code – along with 30 million subscribers’ account information.

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Another Panasonic GX7

The street snapper’s perfect camera.

In film days you would have seen me, as likely as not, toting two Leicas, an M2 with a 35mm lens and an M3 with a 90mm. This was very much an ‘around the world’ outfit, the few occasions when something wider or longer in lenses was needed making the return on humping additional weight too low for that to make sense. None of that solves for the landscape/nature/animal set where you can mostly carry any amount of gear in search of your quarry and for landscapers the subject isn’t about to run away. But for street snappers, light, unobtrusive and fast are the dictates of success in gear and in operation, and the Panasonic GX7 has the genre down by a considerable margin over any other hardware I have yet used.

When I first wrote about the GX7 a few months ago it was my third in a line of wonderful Panasonic MFT bodies, a journey which commenced with the ground breaking G1 (5 years ago!) and later with the sensor-improved G3, the latter now doing happy service with my nephew and pro cinematographer, in Los Angeles.

After many happy years with a 28-90mm zoom (the 14-45mm kit Panasonic lens) I added the truly exceptional 17mm Zuiko, a 35mm lens of outstanding performance and diminutive size. It’s the default optic on my GX7. Later, an equally inexpensive (the benchmark for cost and optical quality being the 35mm and 90mm Summicrons for the M Leica) 45mm Zuiko came along, the equivalent of the classic Leica 90mm portrait lens and almost as good optically as the 17mm Zuiko at a bargain price. I almost wrote “throw-away cheap”, and that’s not far from the truth. Have you priced Leica M lenses recently – you know, the ones without AF?

The 14-45mm kit zoom started to gather dust as I found I was walking the streets with the 17mm on the GX7 and the 45mm in a pocket. But the lens changing thing started getting old and the thought arose that a second body might make sense for the 45mm, especially given how small and light the kit is.

The market gods must have looked favorably upon this idea for as I write I am a happy owner of a brace of GX7s.


Black and chrome – two Panny GX7s.

It helped that I got a new black body on eBay for $608, which compares with almost $800 on Amazon and over $900 at B&H. The chrome GX7 ran me $1000 a few months ago and doubtless a year hence GX7s will be remaindered for $19.99. But if you forever wait for technological progress and price erosion, you are never going to take a picture. So, the heck with depreciation – it’s a minor cost of making the snap.

Black? I dislike black bodies but the color distinction makes sense here as the 17mm and 45mm Zuikos are indistinguishable at a quick glance. The black body does the trick when you are grabbing one in a hurry.

Teething problems? Only one. Conferring identical settings on the new body from the bazillion options and the preferred setup on the first body is an exercise which would try the patience of Job himself but one which, mercifully, need be done but once. I continue to revel in the silent electronic shutter the GX7 optionally offers (I use it exclusively) and have the C1, C2 and C3 custom settings all programed for aperture priority, electronic shutter and auto everything, the sole distinction being the 320, 1250 and 3200 ISO settings. The neat little serrated ring around the shutter button operates the aperture – I still wish it operated in full stops, not the fussy thirds Panny adopts – and that’s about all there is to it. Twiddle the ring, first pressure on the button for focus and ‘click’ – except the ‘click’ is silent, like the ‘D’ in Django.

So what you have here is one happy camper, err …. trekker. Any day now my legs will give out, my eyesight will fail, I’ll start wetting myself routinely and will be doddering around with a cane, but until that day comes you will find me snapping away with not one but two wonderful GX7s and their no less wonderful Zuiko stablemates, in that most eclectic and thrilling of American cities, San Francisco.

Avoiding file numbering conflicts:

All Panasonic MFT cameras start numbering files ‘P1010001’. To avoid duplicate file names, it makes sense to change this, but the camera has no way of doing that, unlike my big Nikons.


Stock file numbering, the SDHC card being viewed in Finder here.

Simply go into Finder and change the first digit of the directory, thus:


First digit of file directory changed from ‘1’ to ‘2’.

Now reinsert the card in the GX7/G3/whatever and format it. Take an exposure. This is what you will now see in Finder:


Be sure to stick with the same SDHC card in that body, or effect a like change on any new card.

You are now set for your next 8 Panny bodies!