I had to send my Star Destroyer (aka car) in for servicing. I use my usual shop in USJ, where the head mechanic / director is an old hand at servicing SDs of my vintage. Turns out that the problem was more complex than he thought, so he had to use a diagnostics computer tool to interrogate the innards of my machine.
Turns out he’s not to versed with the OEM diagnostic tool, so I spent a fair bit of two evenings playing around with the tool (which had the potential of bricking my SD). I thought it was a nice mix of techie experience, and me doing my part to enhance by using something with an LCD on it.
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- Nudibranch
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- Alligator Fish
Turns out the error was the effect of two different root causes, which he found by swapping parts round with his own personal SD. Not something you can easily do with a DCS, huh?
Wata - Malaysian Oil and Gas Engineer 
ah, part swapping.
screwed one of our client. they swapped two Level alarm set (one for Alarm, another for trip). different calibration, gave a bit of a scare.