A PDF manual for the Casio Illuminator AQ51-7E is available from ManualsLib.com. A range of manuals is also available at Casio.com. To download the PDF from ManualsLib.com, click the Download button at the top of the screen. Enter the security code when prompted to start the download. On Casio.com, enter the module number on the back of the watch into the search box, and click Search to view the available manuals.
To set the time and date on a Casio Illuminator, hold the top left button down until the seconds digits begin to blink. Press the bottom right button to reset the seconds digits. Use the bottom left button to cycle through hours, minutes, days, months and years, and use the bottom right button to set the correct digit for each one. Press the top left button again to return to standard time mode.
To set an alarm, press the top left button until the watch enters alarm mode. Press and hold the top left button until the hours digits begin to flash, and use the bottom right button to set the hour. Use the bottom left button to switch from hours to minutes, and set the minutes using the bottom right button. Press the top left button to exit the alarm setting mode.