Roland MC-505
- For more information, see this article's corresponding Wikipedia page: Roland_MC-505.
| Preliminary Information | |
|---|---|
| Release Year | 1998 |
| Leak Risk | Low |
| Batteries | None |
| Mounting Technology | Through Hole, SMD |
| Capacitor Types | Aluminum Electrolytic, Tantalum, Ceramic |
| Destructive Entry | Glued faceplate, replacement adhesive needed |
| Hardware Specifications | |
| Storage | SmartMedia Card |
| Power Requirements | |
| Power Connector | IEC C13/C14 Socket |
From Roland's Groovebox line of products(Related: Roland MC-303), the MC-505 is a music sequencer with integrated ROMpler for sound creation.
Known Issues
Knob is Gone
Causes
- A big whack
Solutions
- Replace potentiometer, hopefully find knob
Buttons Stuck Inside
Causes
- Rushed reassembly
- Depressed in too far
Solutions
- Open device, remove button panel, re-apply double sided tape to secure buttons and replace them, reassemble
Disassembly Notes
Be sure to remove knobs, slider caps, rotary wheel, and nut under rotary wheel when removing top panel
Clear faceplate over LCD is double sided taped on top and bottom. Use a thin guitar pick to break glue loose from inside and then work it slowly from the front once raised. Warning: the tinted covers over 7 segment displays can be scratched
Original Parts
| Type | Qty | Roland Part Name | OEM Part Number |
|---|---|---|---|
| Volume | 2 | RK09L12D0 10KBX2 | RK09L12D0-F15-C0-A10 or RK09L12D0A1W
|
| Non-Detented, single channel | 8 | RK09L1140 10KB | RK09L1140-F15-C0-B10 or RK09L1140A5L
|
| Detented, single channel | 2 | RK09L1140 10KB with click | RK09L1140-F15-C1-B10 or RK09L114001E
|
Original potentiometer's datasheet: https://tech.alpsalpine.com/assets/products/catalog/rk09l.en.pdf
Replacement Parts
While these potentiometers have long enough shafts, the flatted areas are longer than the original model, so a spacer might need to be used.
| Type | Qty | Compatible Part Number | Order Links |
|---|---|---|---|
| Volume | 2 | RK09L12D0A1T
|
Mouser |
| Non-Detented, single channel | 8 | RK09L1140A2U
|
Mouser |
| Detented, single channel | 2 | RK09L114001T
|
Mouser |
WARNING - THESE POTS ARE SLIGHTLY TOO SHORT, FIND 20MM SHAFT LENGTH SUBSTITUTES
| Type | Qty | Compatible Part Number | Order Links |
|---|---|---|---|
| Volume | 2 | P0925N-FC15AR10K | Mouser |
| Non-Detented, single channel | 8 | P0915N-FC15BR10K | Mouser, Digikey |
| Detented, single channel | 2 | P0915N-1FC15BR10K |
If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.
External Links
- Service Manual: https://ia600306.us.archive.org/1/items/RolandMc-505GrooveboxServiceNotes/MC-505_groovebox_SM.pdf