[time-nuts] Reverse Engineering the FE-5680A and how to take it apart (was: Determination of the placement of the first pps)

Attila Kinali attila at kinali.ch
Wed Jan 25 18:29:08 EST 2012


On Thu, 26 Jan 2012 00:21:46 +0100
Attila Kinali <attila at kinali.ch> wrote:


> * Do NOT force the PCB out. If you need to, wiggle gently. If you have
>   to use force, you've forgotten a screw.

Additional note: wiggle holding the heat spreader, not the PCB.

> If possible, i'd be interested in two Revision markings on the PCB.
> Mine has a sticker at the bottom, that reads "RevF".
> Then there is a PCB number on the top side, at the edge near the
> reference crystal (that with the PTC soldered to it). My unit reads there
> "217421-30352" "Rev G"

And a correction: the sticker reads "406" "RevF".

I think the sticker denotes the what population option was choosen,
while the PCB marking denotes the type and revision of the PCB.

Additonal note to self: do not take any device apart, when already
being half asleep. Also do not try to write emails and trying to make
any sense.

^^;

			Attila Kinali

-- 
Why does it take years to find the answers to
the questions one should have asked long ago?




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