Doepfer CTM64 Contact to Midi Interface (main board) - Manual (Page 12)

page 12 CTM64 Version 4 - User's Guide
Check list
In case that your CTM64 installation does not work at the first go please check the following points:
• Is the power supply working correctly ? After power on the LED has to be on ! Otherwise the AC
adapter used is not suitable, has the wrong polarity or does not work. The correct polarity is: outside
ring = GND, inside lead = +7...12V.
• Is the control LED flickering if one of the contacts is closed/opened or one of the potentiometers is
operated ? It is very easy to simulate the contacts in the testing state by connecting one end of a
wire to the common pin (JP6) and touch one or more of the contact pins 1...64 with the other end of
the wire. The corresponding MIDI note or program changes messages should appear at the MIDI
output of the CTM64 and the LED should flicker.
• Is the control LED flickering if incoming MIDI messages appear at the MIDI In of MTC64 ? (this
check required only if MIDI In of CTM64 is used)
• Are the MIDI connections between CTM64 and the other MIDI devices installed correctly ? MIDI Out
of CTM64 has to be connected to MIDI In of the MIDI device controlled by CTM64. Especially when
computers are used MIDI In and Out are very often mixed up by the user. Once again: MIDI Out
→
MIDI In (not MIDI Out → MIDI Out and not MIDI In → MIDI In). Please use only cables that are
suitable for MIDI.
• Are the right MIDI cannels selected (same for CTM64 and the device controlled by CTM64)
• Is the right note range selected ?