Kommentare (neueste zuerst):

# Von Nikolaus Schaller, Nov 24, 2013:

More observarions:

* LOWER: PCB snaps nicely into snap-fits and cutout between + and - buttons is very good
* but mounting holes are not exact enough
* LOWER: mounting holes for USB connector are muchtoo big (radius vs. diameter?)
* LOWER: position of ON-Key appears to be weird compared to button on case, but fits exactly to PCB
* LOWER: Camera hole appears still to be deplaced by 0.1-0.2mm and needs to be drilled in the corners before milling
* LOWER: Pogo-Pins are not well centered where they should be, but should work
* LOWER: pushbuttons appear to fit
* UPPER: mounting holes do not fit to the display assembly
* LOWER: SD reader and SIM reader footprint appears to fit
LOWER: SIM reader position is very good (SD-card not in final position - needs another PCB)
* LOWER: 3 of the 4 spring contacts of the battery bay metal do not connect to GND because they contact the shield cages on the N900
* LOWER: detector button has wrong footprint (too wide!) - calculation mistake when converting mechanical drawing to footprint coordinates
* LOWER: we might want to find an OTG socket variant from the 047589-0001 that has 2 additional pegs like the 047590-0001 -- but that may not be necessary at all

# Von Joerg Reisenweber, Nov 23, 2013:

sorry of course NOT close ticket since there are several other points in it

# Von Joerg Reisenweber, Nov 23, 2013:

The strange thing under the display connctor is labeled "X2000" in component placement, is not showing up in schematics, and magnetic properties of any kind couldn't be found in it.
I however found a microscopic "2D-barcode" on it which looks like laser-marking. I guess that's the main purpose. We probably can safely ignore it.
Sugestion: close ticket.

# Von Nikolaus Schaller, Nov 23, 2013:

upper board:

* we don't have thought about the (different!) C-springs and contacts
* there is a small "wire" line above the button contacts
following the dome sheet contour (at least partially)
* there appears to be a rectangular piece of metal soldered on a smple GND pad right nead the display connector. It's function isn't clear at all (magnet???)

lower board:

* there should be more clearance around the "hot" ends of the C-springs
* the position of the C-spring between the lockswitch and speaker appears to be wrong
* we have 2 VIAs in 2 pads of the SIM reader - should be avoided



--
Ticket: http://projects.goldelico.com/p/neo900/issues/518/