37
Chorus Speed Mod Install
The Chorus Upgrade will allow control of the Chorus Speed in the JX-3P which can be controlled via midi and saved with a
program patch. There is also a manual mode to allow the chorus sweep to be stopped in any position or controlled at any
speed.
Step 1)
Remove the front panel board. To do this it will be necessary to remove the Jack board to allow access to the
mounting screws for the front panel. This is done by removing the four screws at the ends of the jacks on the rear of
the 3P. The front panel can then be removed by removing the slider knobs and then undoing the mounting screws.
Step 2)
Remove IC2 (green arrow in picture)
Step 3)
Clean and dust or dirt from the labelled space on the board in the photo using a damp cloth and then dry. Bend
down C15 as much as will easily bend away from the IC2 holes. Do not force. Remove the tape from the double
sided sponge on the Chorus Mod PC board and press the board onto this spot. Solder in the 8pin header into the
IC2 holes with the cable going over C15 (see photo). Make sure the bottom of the Chorus Board does not touch
any of the wire links.
Step 4)
Uncoil the shielded cable and tie this to the existing wiring loom down to the main voice board.
Step 5)
Carefully Solder the end of the cable to pin 4 of IC28 making sure you have not bridged the IC pins with solder. This
is arrowed on the picture. This will need to be done fairly quickly so the IC does not get too hot which will damage
it. The cable can be soldered to the top or bottom of the board. The cable should be tied to the hole in the board
next to IC28 (see photos).
www.kiwitechnics.com
3P Matrix Upgrade User Manual v1.2
Summary of Contents for KIWI-3P
Page 5: ...5 Front Panel Description www kiwitechnics com 3P Matrix Upgrade User Manual v1 2 ...
Page 6: ...6 Basic Connections www kiwitechnics com 3P Matrix Upgrade User Manual v1 2 ...
Page 7: ...Menu Flow Chart ...
Page 8: ...8 Edit Map www kiwitechnics com 3P Matrix Upgrade User Manual v1 2 ...