2 Dec
2003
2 Dec
'03
11:19 a.m.
Hmm. I am going by "Figure 5-7 Teletype
Connections", which led me to
expect Relay+ to be connected to the relay, and to the cathode of a diode.
I expected Relay- to be connected to the anode, and also to a resistor,
which connects to the other side of the relay. It shows a capacitor
across
the relay contacts, which also connect to the local
switch and the reader
solenoid.
I don't suppose I could prevail upon you to trace the
connections/schematic
for me?
Thanks!
Vince
It was just as you describe except the capacitor is a MOV on mine,
except there was a 10mf cap across the relay coil, that micht have
been a non-DEC FCO and from tha soldering job I know who did
it. The relay is a reed relay marked as 12vdc coil and measured
328 ohms which works out to about 37ma. BTW the run relay
is mounted on a small PCB mounted vertically near the left end
of the keyboard assy. There are four wires that run back into the
rats nest at the rear of the PS.
Mike