Roland MC-303

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For more information, see this article's corresponding Wikipedia page: [1].
This device is in the WorkNeeded:OriginalParts category because it was flagged as missing information on the original parts. It may have replacement parts listed but those cannot be assumed to be identical to the originals. If you have a list of the original parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables
This device is in the WorkNeeded:ReplacementParts category because it was flagged as missing information on replacement parts. If it has the original parts listed you may be able to search for replacements using the parametric searches available from parts distributors. If you have or make a list of replacement parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables
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

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

ASSY 70788723

Potentiometers
RefDes Qty Resistance Gangs/Wipes Mount Markings Brand Part Number
VR1 1 10k? 2 Through Hole 103B, 7, AV ? ?

Replacement Parts

Roland MC-303 PANEL BOARD

Potentiometers
RefDes Qty Compatible Part Number Order Links
VR1* 1 P0925N-FC15AR10K Mouser,Digikey

*Not yet tested

Related Links

References