Roland HP-555G Service Notes page 14

HP-555G
8. LCD check
When you enter this mode, the entire LCD will go dark.
Next, press the [Function] button and confirm that the LCD lights entirely as following.
Press the [Function] button again. Confirm the following display will appear in the LCD.
Press the [Function] button to proceed to item 9.
9. Destination region setting
The following display will appear.
Now press the [Beat] button to select DOM (100V) specifications, or press the [Tempo] button to select EXP (117/230/240V)
specifications.
* When you enter this setting, the HP-555G will automatically return to the factory settings.
Press [Function] button to proceed to the next test.
10. Exiting test mode
To exit test mode, turn off the power.
(If press the [Function] button here, you can jump to the first item of the Test Mode.)
11. Mic check
After exiting test mode, connect a mic to the Mic In jack located under the keyboard, and rotate the knobs (Mic Volume and Mic Echo) to
verify that each function operates correctly.
14
Nov. 1998