Sharp FO-2080 Operation Manual page 174

USER SETTINGS
Audible signals (key entry beep, invalid key beep, base setting beep)
The machine sounds three different types of beep signals: a key entry beep that
sounds when a valid key is pressed, an invalid key beep that sounds when an
invalid key is pressed, and a base setting beep that sounds when a setting is the
same as the base setting (base settings are explained below). The base setting
beep is initially disabled. If you wish to enable the base setting beep, see
"SOUND AT DEFAULT" on page 64. If you wish to change the volume of the beep
signals or disable them, see "KEY TOUCH SOUND" on page 64.
The beep patterns of each type of beep signal are as follows:
Key entry beep..................... One beep
Base setting beep........... Three beeps
Base settings
The base settings are preset standard selections for each copy setting. The base
settings are as follows:
Copy ratio................................... 100%
Light and Dark level ................. Center
68
Invalid key beep............... Two beeps
Paper feed location ................. Tray 1
AUTO/TEXT/PHOTO ................AUTO
(Upper paper tray)