10 Apr
2001
10 Apr
'01
8:21 a.m.
--- Richard Erlacher <edick(a)idcomm.com> wrote:
It's pretty hard to tell whether it's the
keypad or the circuit that's
malfunctioning. How did you determine it's the keypad itself?
Looking at the schematic, it appears to be a simple matrix. Short a particular
X and Y line for the questionable key. If it "strikes", it's the keypad.
If it still flakes out, it could be a component or trace.
-ethan
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