24 Jul
2007
24 Jul
'07
7:46 p.m.
Hi,
....no internal schematics for the dialer (keypad/DTMF
econder)
or ringer.
Actually, I just spotted what you mean about the ringer....I'd forgotten it
was a complete circuit board on it's own.
It looks pretty simple though, only a handful of components (a transformer,
four or six diodes, two BC108Bs and a few resistors/caps). Might have a bash
at debugging it tomorrow afternoon.
That diagram is still darn useful though, it lets me make sense of the rats
nest of wires on the main board.
TTFN - Pete.