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NT680 Series User’s Manual_English_V1.01
Figure 8-9 Sample Beeper On/Off Screen
8.5 Display Test
Selecting Display Test option opens a screen that allows you to check the functionality of the display.
To test the display:
1. Scroll with the arrow keys to highlight Display Test from Settings menu and press the ENTER key
to start test. Check if there are any missing spots in the LCD screen.
Figure 8-10 Sample LCD Test Screen
2. To quit the test, press the Back key.
8. 6 Keypad Test
Selecting Keypad Test option opens a screen that allows you to check the functionality of the keypad.
To test the keypad:
1. Scroll with the arrow keys to highlight Keypad Test from Settings menu and press ENTER key.
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