Roland MC-303
- For general information, see more on Wikipedia: Roland MC-303
Roland MC-303
| Preliminary Information | |
|---|---|
| Release Year | 1996 |
| Leak Risk | Low |
| Batteries | CR2032 (User storage) |
| Mounting Technology | Through Hole, SMD |
| Capacitor Types | Aluminum Electrolytic, Ceramic |
| Destructive Entry | No |
The Roland MC-303 is a music composition device designed more for live performances than studio use. It uses a mix of digital buttons, a rotatory encoder, and analog potentiometers for the interface.
Known Issues
Damaged Potentiometers
Causes
- The volume and control potentiometers are commonly damaged and can become internally loose
-
A damaged volume potentiometer that bends out of line from the others.
-
Metal fingers meant to hold the potentiometer together are bent from side impact to the shaft.
Solutions
- You may get lucky and be able to bend the fingers back or possibly glue the case back together on the potentiometer
- Replace bad potentiometers
Disassembly Notes
Be careful of the ribbon cables when removing PCBs. These use a crimping style connector that clamps down onto the individual wires that stick out of the end of the ribbon cable. It can be easy to tear or bend these.
Original Parts
Roland MC-303 PANEL BOARD
| RefDes | Qty | Resistance | Gangs/Wipes | Mount | Markings | Brand | Part Number |
|---|---|---|---|---|---|---|---|
| VR1 | 1 | 10k? | 2 | Through Hole | 103B, 7, AV | ? | ? |
ASSY 70788723
Replacement Parts
Roland MC-303 PANEL BOARD
| RefDes | Qty | Compatible Part Number | Order Links |
|---|---|---|---|
| VR1* | 1 | P0925N-FC15AR10K | Mouser,Digikey |
*Not yet tested