Neo900 Spring-Type Contacts

The following images show where spring-type contacts are located in the N900, and what role they play. On the PCB, these contacts are either C springs or just contact pads touched by a spring-like protrusion of a component located in a mating part.

Since Neo900 interfaces with the same parts (from the original N900 design), it has to provide the same contacts.

We use the following color coding to indicate different types of signals:

Springs are indicated by rounded rectangles or circles, the location where they touch (e.g., pad, shield, or similar) by a regular rectangle.
Where it serves clarity, we link groups of mating contacts with a line.

The following images show the respective surfaces as they would appear when viewing the assembled device from the top with "x-ray vision". To this end, some images have been flipped (mirrored) along the Y axis.
This also corresponds to the orientation of the PCB surfaces in the layout editor.

Complementary information: high resolution scans of PCB top and bottom (for measuring pad dimensions and locations).

PCB top

The PCB top interfaces with the key mat and the display/slider assembly:

PCB bottom

The PCB bottom interfaces with the case and various components contained therein:

2016-11-22 00:59:10 UTC