User manual
MIDI KEYBOARD CMK-2 TROUBLE-SHOOTING MANUAL v1.5
70 2009 CLASSIC ORGAN WORKS CMK-2 Manual 1.5.doc
How do I upgrade the chips in my CMK-2 Classic Keyboard Stack?
To install the chips, first you should back up your current settings using your old version of CMK config.
Make sure the power is off.
You need to remove the 2 screws that hold the circuit board to the keyboards. There will be 2 sets of ribbon connectors.
One set is right at the front and one is further back. Ease both of those off their mounts.
Look for the chip the same size as the replacement one.
Note the little semi-circular cutout at one end of the chip and which way it is orientated.
Ease out the old chip from the socket.
Gently but firmly seat the new chip in the holes with the semi-circular cutout pointing the correct direction and press
down until it is flat.
Reconnect both sets of ribbon cables.
Replace the screws.
Repeat this with each of the CMK-2 keyboards.
Once you have replaced the chips, you can connect the two older keyboards together and load in the old backup with the
new CMK config.
Remember to plug in the MIDI IN and OUT into the computer while configuring.
Then you can hook all the keyboards together and use the "Load Configuration from CMK".
Find the backup file that you saved at the beginning.
Select the Lightning bolt icon to save the configuration back into the memory of the keyboards.
Disconnect the MIDI out from the computer and you can start up Hauptwerk.
The lights on my keyboards are blinking whether I am playing or not.
After you do all your channel and piston assignments, click on the Lightning bolt icon at the top of the screen. That will
load the config into the keyboard memory. Note that to do this you need both MIDI IN and OUT plugged in to the stack
and connected to the computer.
Once you have downloaded the config into the memory of the keyboards, if the lights are still blinking, unplug the MIDI
OUT from the computer. Something in your computer is sending MIDI signals whether you are playing or not.
It should quit blinking if you unplug the MIDI OUT. Modules and Hauptwerk only need MIDI in.
If you unplug the computer's MIDI OUT and boot everything up again, you should be able to plug it in again with no
problems. One of the Windows drivers probably had a problem with the configuration process.
My keyboards do not remember the configuration when I turn the power off .
Sounds like you need to save the configuration into the memory of the keyboards.
After you do all your channel and piston assignments, click on the Lightning bolt icon at the top of the screen. That will
load the config into the keyboard memory. Note that to do this you need both MIDI IN and OUT plugged in to the stack
and connected to the computer. See Figure-8.
What product do I use to MIDIfy my pedalboard?
For the pedalboard, we generally recommend the MKSC-4A, especially if you have magnets on the pedal keys already.
This is the scanner we use in our pedalboards and we have a pedalboard switch kit to make it easy for those with the
magnets. It has three swell shoe inputs built into it. If you have our keyboards, the MKSC-4A is not so crucial since each
one of the keyboards also has one swell shoe input in the back. The MKSC-1A is much easier to wire up than the MKSC-
4A if you have the keyboards with separate switches.
For pedalboards we can provide two types of scanners that will convert the key presses into MIDI data for your MIDI
interface. If you wire the pedalboard as an 8x8 matrix (with diodes), you can use our -4A product. If you parallel wire it,
which means one wire per key with a +12V common wire (A.K.A. a contact rail), you can use our -1A board.
The difference between parallel and matrix wiring is this:
Parallel wiring uses a single power source (usually +12v) connected to all the keys with one wire coming from each key
contact and results in 62 wires from a 61-note keyboard.