Furuno NX-700B Service Manual page 99

Contrast Test
5. In the Contrast Test, the contrast of the screen automatically changes in 10 levels as
shown below. The screen displays the result of the contrast test last. If the test result
is "Pass", press the [ENT] key three times, and if the result is "Fail", press the
[PRINT] key three times to proceed to the next Dimmer Test.
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Dimmer Test
6. The dimmer level of the screen automatically changes in 10 levels as shown below.
The screen displays the result of the Dimmer test last. If the test result is "Pass", press
the [ENT] key three times, and if the result is "Fail, press the [PRINT] key three
times and proceed to the next Internal Buzzer Test.
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Internal Buzzer Test
7. Intermittent internal beeps (Key click beep) are outputted. If the test result is "Pass",
press the [ENT] key three times, and if the result is "Fail", press the [PRINT] key
three times and proceed to the next Alarm Buzzer Test.
Internal Buzzer Test
Internal buzzer test result
Pass Push [ENT] 3 times.
Fail Push [PRINT] 3 times.
1
1
7-7
Contrast test result
9
Pass : Push [ENT] 3 times.
Fail : Push [PRINT] 3 times.
Dimmer test result
9
Pass : Push [ENT] 3 times.
Fail : Push [PRINT] 3 times.
Buzzer for receiving monitor
sound and key click
7.1 Self Test