[Arm-netbook] rev0 a10 eoma68 board bringup

luke.leighton luke.leighton at gmail.com
Sun Dec 23 09:10:38 GMT 2012


On Sat, Dec 22, 2012 at 2:06 PM, Henrik Nordström
<henrik at henriknordstrom.net> wrote:
> lör 2012-12-22 klockan 10:08 +0000 skrev luke.leighton:
>
>> AH HA!  3.3V (off of EXTEN, pin 19 of the AXP209) only comes on for 1
>> second then drops off.
>
> Sounds like overload protection kicks in.

 yeah.  the software which generated the gerbers had a couple of
places where diagonal tracks had been overlaid by rectangular pads,
the software didn't detect that the "clearing" either side of the
diagonal track obviously needed to cut a corner off the rectangle, so
it just... joined the two together, yaay!  it turned out to be 5V
joined to GND.

 those two faults were found easily enough but this one's a bit more subtle.

l.



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