I have a Piano from Casio Named The PX830 BP.I also have a Sustain Pedal Model from Casio named the SP 33.Will connecting the SP 33 into the PX830 BP work?Please tell me if I have the wrong model.

SOURCE: Roland DP-2 pedal not functioning correctly.

There are two types of damper pedal switches, on that is closed until you press it, and one that closes when your press it. It sounds like your Casio is expecting one type and your Roland pedal is the other type. A quick way to test this is to plug a guitar cable into the Casio pedal input and see if the keyboard sustains. If it does, then your Casio requires an "normally closed" switch.

Some pedals have a small switch near the cord or even on the bottom of the pedal that will reverse the switching operation (BOSS pedals, a division of Roland, have this feature). If you can find that, then change the switch position and you should be OK.

If not, and you feel like digging into your pedal, you could take the bottom off of the pedal and check out the switch itself. Many pedals use a switch that can be used either way. The clue will be on the switch itself. If there is an extra tab on the switch that is unused, then switch the wire that is furthest away from that tab to that tab. This will probably involve soldering, but it is nearly impossible to damage anything.
If moving the wire that is furthest away does not do anything, then try putting that wire back and switching the other one.

If your pedal does NOT have an extra tab, you're SOL, unless you want to buy a replacement switch (unsure of make). If this is the case, you are probably better off getting a different damper pedal - preferably one that is marketed as "universal"

SOURCE: Casio 1600 sustain pedal problem

Not if its like mine, its a completecircuit vs.incomplete circuit problems.

I had the exact same problem with my Casio keyboard and a Yamaha sustain pedal I bought.

I'm not an electrical genius, but I was able to get it to work by opening it up and doing a little modification. Of course I first just tried switching the white wire with the black one but that didn't change anything at all when I tried it. It turns out the Casio wants the circuit completed to sustain, and broken for no sustain, which is the opposite of what the Yamaha pedal does.

I opened it up and mine had three three flat metal strips let's call them Top, Middle and Bottom. The Middle and Bottom ones were joined together on the right side, and the Middle and Top ones were touching on the left side when the pedal was not pressed. These seperated when the pedal was pressed, thereby breaking the circuit because the wires were on the top plate and on the joined Middle/Bottom plate.

So to flip it I:
1. Unsoldered the Bottom wire
2. Cut apart the Bottom and Middle plates on the right.
3. Bent the Middle plate on the right to touch the Top plate instead and soldered those together.
4. Soldered the Bottom wire back on.

That's it! Once I figured it out, it took only a few minutes to fix.
Good luck!
Paul

SOURCE: Kurzweil digital piano unpredictable voices and volume

The contacts of various switches and keys are likely dirty. They are often conductive rubber and need cleaning with 99% isoprophly alcohol and q-tip. Clean both the conductive rubber pill and th circuit board traces they contact.

SOURCE: What type of sustain pedal Roland EP-90 digital

CLOSED is typical for Roland pianos when at rest. (open to sustain).

Note that the jack PROBABLY has a grounding contact so when no pedal is used/plugged in, the jack is shorted at the piano.

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SOURCE: The sustain is on all the time.

The pedal activates a microswitch fitted to the circuit board. I suspect for some reason unbeknown to man and spirits this switch has become "stuck" or collapsed. If the latter then it has to be replaced as they are soldered to the board. You coulod open the unit trace the pedal back to the sustain switch and "jiggle" it manually to try and release it. A small amount of WD40 on your finger and rubbed over the pole of the switch( do not spray it) should help it to stay releaased until wanted. If you see corrosion on the board near the switch then take it to a music repair shop as this corrosion is like a cancer and will spread to other keys.Mice piddle is not unusual on keyboards and a great destroyer.

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