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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.