JRC JMA-5212-4/6 User Manual page 407

[II] Buzzer Test
Checks for the operation panel buzzer.
Procedure 1 Press [2] key while the Keyboard Test
menu is open.
The buzzer will sound.
2 The buzzer automatically stops after it
sounds for a specified length of time.
Exit 1 Press [RADAR MENU] key.
The menu will be closed.
[III] Light
Checks for the operation panel light.
Procedure 1 Press [3] key while the Keyboard Test
menu is open.
The brightness of the operation panel is
gradually intensified at four levels.
Exit 1 Press [RADAR MENU] key.
The menu will be closed.
8.3 PERFORMANCE CHECK
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