Fujitsu ECLIPSE CD8443 Owner's Manual page 31

Disabling the guide tone feature (for button operation)
The receiver is set at the factory to emit a beep tone in
response to button operation. The guide tone feature may be
disabled in the following procedure:
Turn the [SEL] button to select Guide Tone.
1
The selected item will be highlighted.
Press the [SEL] button.
2
The guide tone mode will be switched ON/OFF.
3 Turn the [SEL] button to select ON or OFF.
The selected item will be highlighted.
4 Press the [RTN] button.
At this time, other adjustments can also be made in
function mode.
5 Press the [FUNC] button to exit function mode.
[FUNC] button
31
Basic operation
[SEL]
button
[RTN] button