Manual

doepfer
System A - 100 9. Appendix
35
9.3.3. Controls / indicators
1 LED • 2 LED
LEDs 1 and 2 indicate that the power supply is
working properly. Once the MNT is connected, both
LEDs should come on.
A
If both LEDs don’t come on, first of all check
that mains power is available at the socket
which the MNT power supply was connected
to; then that the mains adaptor is actually
putting out voltages, and that a DC adaptor
hasn’t been used by mistake. If both these
points are checked, then the MNT must be
defective. The same applies if just one of the
LEDs comes on.
9.3.4. In- / outputs
! BU 1
This is the socket to which the plug from the external
power supply is connected.
" ST 1 ... ST 4
The sockets labelled " on the diagram on p.2 are
where the modules are connected.
So... to connect modules up to the MNT .....
D Disconnect the power supply lead from socket !.
D Connect the ribbon cable supplied with each
module to the module’s bus connector
(see
1
in Fig. 1). As a rule, this is 16-way, but on
some modules it’s only 10-way. Check that the
cable connector is oriented correctly, (see
2
in Fig.
1), and press it on to the module’s bus pins.
A
Be very careful to ensure that the coloured
marking on the ribbon cable is at the bottom
of the module’s connector (see
3
in Fig.
1) and that the connection is perfect, and
pushed fully home, not at a slight angle.
Failure to check this may result in the modu-
le’s instant destruction as soon as the power
is re-connected.