Visualizations of signal paths (audio and MIDI) across the internal boards.
Reconnect all FFC ribbon cables, ensuring they are seated straight and the connector collars are fully locked.
Never use harsh cleaners. Isopropyl alcohol is the standard method for cleaning rubber conductive pads and the PCB contact traces. roland juno di service manual work
A built-in sequence used to verify hardware integrity, including screen, button, and sensor functions.
Remove the keybed and gently unclip the plastic keys to expose the rubber contact strips. Pull up the rubber strips carefully. Clean the black carbon dots on the underside of the rubber strip and the corresponding gold fingers on the PCB using a lint-free swab dipped in IPA. If the carbon coating has worn away, replace the entire rubber contact strip assembly. Broken Pitch Bender / Modulation Lever Visualizations of signal paths (audio and MIDI) across
Opening a Juno-Di will void any remaining manufacturer warranty. If you purchased the unit brand new, contact an authorized service center instead.
By understanding the , you can keep your instrument in perfect working order for years to come. Isopropyl alcohol is the standard method for cleaning
Houses the CPU, sound generator chip, and flash memory.
: The JUNO-Di uses standard micro-tactile switches soldered to the panel boards. If cleaning them with a blast of compressed air and contact cleaner fails, they must be desoldered and replaced. The service manual specifies their exact electrical footprint.