31 Jul
2004
31 Jul
'04
2:52 p.m.
chris [osicollector(a)btinternet.com] wrote:
Top outside connector should give composite video two
below are
for cassette.
Hmmm... that doesn't seem to be the factory configuration. The
C4 SAMS (sitting in my lap right now) and both of my own examples
show the top inside (left as you are facing the rear of the machine
and the machine is right side up) as video, below it (only on a C4P
NOT mf) are cassette out and in. There is no cassette I/O on a C4Pmf.
Top outside is audio, below that is DAC out and below that is AC.
Some machines can be wired differently though best to
check
from video board J1 the 12 pin opposite the backplane.pin1 of the
socket one the 540 board is next to the 7400. Then as follows
1-gnd
2 colour freq red
3 blue
4 green
6 colour comp
6 gnd
7 black and white comp
8 sound in
9 gnd
10 sound out
11 ac control
12 gnd
That looks about right but to avoid confusion, it should be noted that
in the factory configuration only pins 2, 5, 6, 11 and 12 are used. 2
goes to the rear mounted pot for color adjustment, 5 and 6 to video out
and 11 and 12 to AC CONTROL (which I think is an early form of X10
appliance control).
Bill