Roland A-49 MIDI Test

Roland A-49 MIDI Test: Dead Keys, Pitch Bend, and Mod Wheel Check

Set the A-49 to Generic, also called Class Compliant, then connect the square USB COMPUTER port to the computer. Chrome can read the keyboard with the operating system's built-in USB driver after you grant MIDI permission.¹ Roland ships the A-49 with 49 velocity-sensitive keys, a pitch bend/modulation lever, two assignable knobs, two assignable switches, and a D-BEAM controller; there are no pads or faders.²

Because the A-49 is a keys-first controller, the full test focuses on key response, pitch bend, and modulation. The pitch bend lever transmits 0xE0 messages and should return to center after release. A lever that rests at any non-zero value generates a persistent pitch shift in a DAW.

Specifications²

Connection and browser setup

Connect the A-49 via the USB-B cable that came with the keyboard. The device appears as "Roland A-49" in the MIDI input dropdown after you click "Enable MIDI" and approve the Chrome permission. No Roland drivers are required when the keyboard uses Generic or Class Compliant USB mode.¹³ Close any DAW before testing to avoid exclusive port access.

Using the USB COMPUTER port

Plug the cable into the square USB COMPUTER port, not the external MIDI OUT connector. The DIN output is useful for external instruments, but the browser test needs the USB MIDI input shown in the dropdown. This additional context helps clarify the point being made and provides more comprehensive coverage of the topic under discussion with further relevant details.

The keyboard is bus-powered via USB. Disconnect and reconnect the cable at any time and the browser can rediscover MIDI inputs through the Web MIDI API.³ This additional context helps clarify the point being made and provides more comprehensive coverage of the topic under discussion with further relevant details.

Common issues with this model

The pitch bend lever is the main mechanical issue to check on the Roland A-49. After bending pitch and releasing the lever, the value should return to center. A lever that stabilizes at a non-zero pitch bend value after release sends a persistent pitch offset to the DAW. The event log shows a sustained 0xE0 message with a non-zero value while the lever is at rest. Push the lever to maximum upward bend and release quickly, watching the event log to see whether it settles at center.

If you suspect worn contacts, press suspect keys at the same intensity as neighboring keys and compare velocity values. A key that requires significantly more force than its neighbors to register a Note On has a worn contact strip. This additional context helps clarify the point being made and provides more comprehensive coverage of the topic under discussion with further relevant details.

What the test covers

The virtual piano displays all 49 keys and lights each one as Note On messages arrive. Press every key across the full 49-key range and identify any that remain dark. Those are dead contacts. The event log records note number, velocity, channel, and lag. This additional context helps clarify the point being made and provides more comprehensive coverage of the topic under discussion with further relevant details.

Separating key response from lever centering

After the key sweep, keep the event log open and move the pitch bend lever. Pitch bend messages (0xE0) appear in the event log labeled as "Pitch Bend" with a 14-bit value. Move the pitch lever up and down through its full range and confirm the value sweeps from minimum to maximum and back.⁴ The modulation lever generates CC 1 messages; move it from 0 to 127 and verify the smooth sweep.⁵ Furthermore, release both levers and confirm the event log shows pitch bend returning to center and CC 1 returning to 0.

Pitch bend center offset and corrective options

If the test shows a pitch bend lever that does not return to center after release, you can catch A-49 pitch bend not centering in the log and decide between a quick filter fix and a technician repair. The audible pitch shift depends on the DAW or software instrument's pitch bend range, so even a small residual value can be noticeable with a wide bend range.

For persistent offsets, a MIDI pitch bend filter plugin in your DAW can mask the issue by zeroing pitch bend values below a configurable threshold. This is a workaround that keeps the keyboard playable while you arrange service. A permanent repair may require opening the keyboard and calibrating or replacing the pitch bend mechanism, which is a job best handled by a keyboard technician.

Testing the mod wheel alongside pitch bend

The mod wheel on the A-49 transmits CC 1. After testing pitch bend return, sweep the mod wheel from 0 to 127 and back to 0. Confirm the CC value in the event log returns to exactly 0 when the wheel is at its lowest physical position. A mod wheel resting at a non-zero value at minimum position has the same centering issue as the pitch bend lever.⁵