Roland U-110

System Reset:

To reset this module to its default settings hold down [part/jump] + [edit/exit] when turning the unit on.

Using Test Mode:

The test mode on the U-110 is ver comprehensive and can be very useful when diagnosing faults with the unit. First enter test mode by holding down [dec] + [inc/enter] when switching on the unit. It should display (on my working unit it does anyway) == Test Mode === U-110 Ver2.03 or similar (version number may be different) and press [dec] + [inc/enter] this is also used to switch between tests. Tests carried out;

1. S-RAM Check,

2. LCD Check (display switches on all pixels),

3. KEY/LED Check (pressing down a key will blank out that keys name on the display and if there is an LED in the key that will light up as well if working),

4. Battery check,

5. MIDI Check (using a midi cable connect midi in to midi out on back of unit. Midi message light will flash and a graphical representation of data flow will appear on the display),

6. Wave ROM check,

7. ROM card check,

8. DAC Offset Adjust,

9. DAC MSB CHECK,

10. Sound Check (By pressing <- and -> you can cycle though the modules voices. if working a tone should be heard from headphones or other connected output device (mix output) also pressing [dec] or [inc/enter] checks the effects),

11. Output check (this checks the individual voice outputs use <- or -> to change the currently selected output and check to see if a test tone is emitted from that output),

END OF TEST MODE

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Reference: http://en.wikipedia.org/wiki/Roland_U-110