Korg POLYSIX M Owner's Manual page 17

Modifications
1) GENERAL
In order to make the MIDI retrofit work some modifications have to be done to several modules of the Polysix.
There are additional modifications which are not related to MIDI. Some of them are mandatory, some of them are
optional. So please read this whole section carefully and decide then what you want to implement.
There are some things to do on the control panel pcbs. Although it seems to be a lot of work I recommend to
unmount all modules from the control panel lid. This is much safer when drilling the holes for the MIDI jacks. At this
occasion you can thoroughly clean the lid, knobs, and buttons.
There are basic solder skills necessary to do the following.
Additionally you need appropriate tools:
• small solder iron (max. 25Watts)
• solder
• desolder vacuum pump or solder wick
• pair of pliers
• pair of pincers
• pair of tweezers
• knife (cutter)
• various screwdrivers
• multimeter is helpful
For mounting the MIDI jacks you will need:
• hammer
• hard pointed tool
• drilling machine with 3.5mm, 6.5mm, and 14mm drills
• round file
• black permanent marker
All parts, wires, etc. are included in the kit. Check the contents of the kit against the packing list.
You will have to cut pcb traces. Be sure that they are really interrupted and there is no chance of coming
together again. A good way of doing this is to cut twice, 1mm apart and remove the remaining pcb trace in between.
Connecting two points to each other means to solder a wire from here to there (use the thin green wire supplied).
Be careful not to make any shorts to neighboring pins, etc.
If you are not sure whether you will be able to carry out the necessary steps, find someone who is experienced in
this kind of stuff.
Before you start working save all your patches to tape. Otherwise they will get lost. It is also a good idea to
thoroughly check the whole instrument. Turn every knob, press every button, etc. and make a note of any
anomalies. When you finished installation and some functions seem not working you will be glad if you know
whether they worked before or not.
When I speak of "upper" or "lower" end of a component I mean when viewing the Polysix in normal playing
position facing the keyboard ("upper" is side towards back, "lower" is side towards keyboard).
OK, here we go:
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