Furuno SC-50S Operator's Manual page 56

3. MAINTENANCE, TROUBLESHOOTING
Diagnostic test3
This test checks the buzzer signal/contact for proper operation.
1. Press the MENU key to open the menu.
2. Choose SYS SETUP and then press the ENT key.
3. Choose TEST? and then press the ENT key.
4. Choose TEST3 and then press the ENT key.
6. Press ◄ to choose YES and then press the ENT key.
7. Press the ENT key.
8. Choose OFF or ON as appropriate and then press the ENT key.
OFF: Buzzer sound goes off, alarm contact signal is closed.
ON:
9. To quit the test, turn off the processor unit.
3-6
ALARM: OFF
The buzzer sounds and the alarm contact is open.
TEST1
TEST2
TEST3
Test menu options
TEST START?
(STOP: PWR OFF)
ARE YOU SURE?
NO
YES
Test start prompt
TEST3
TEST3 menu
OFF
ON
ALARM options