DX7 S
Page 6 of 7
Install
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Place the S board gently on the DX7 main board so that the 28 pins that form a DIP
package align with the vacated IC14 spot. The 8 pins along the edge should align with IC20. Do
not press the board in place yet. You can use a small mirror to check the pin alignment.
Once you are happy that all the pins are aligning with the desired locations, firmly and evenly
press the S board in place. Make a visual check to see that the board is flush with the
sockets.
For Rev B it is recommended to press on the two white rectangles.
Using a screwdriver, carefully tighten the original main board screw through the S
board into the nylon standoff.
Do NOT force it or over tighten as this can not only strip the
standoff, but it can cause the S board to torque and change position. It should
be tight enough so that it cannot work lose
. Double check the pins.
Reassembly
Carefully reassemble the DX7 in the reverse order, taking care to replace the correct screws in
the various locations. If you disconnected the green keybed ground strap wire don't forget to
screw it back in.
When you reinstall the silver metal keyboard rail, make sure it does not contact any
S components or pins.
The silver metal rail should just clear the S when
the rail is tightened in place. The silicon or hot glue seen on the S board helps keep
the board and rail apart somewhat, but check with a mirror and flashlight to be sure.
