Keyboard Matrix; Power Key - Nokia NSE–3 SERIES Service Manual

UI Module UE4

Keyboard Matrix

ROW/COL 0
0 FLIP
1 NC
2 NC
3 NC
4 PWR switch
NC = Not Connected

Power Key

Micro switch is used as a power key on UI module. Circuitry includes mi-
cro switch and two diodes which is needed for MAD interface. Power
key is connected to CCONT. Power switch is active in LOW state. The
power key circuit can be seen from the Display Circuit diagram on page
8.The power key is connected to ROW4.
Page 4 – 10
1 2
Side Key Send
Soft left Up
1 4
2 5
3 6
S Left S Right
Up
Down
Send End
1 2 3
4
5 6
8
7 9
0
* #
PAMS
Technical Documentation
3 4
End/Mode Side Key
Down Soft Right
7 *
8 0
9 #
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