Furuno 1835 Operator's Manual page 112

6. MAINTENANCE, TROUBLESHOOTING
• HEADING PULSE, BEARING PULSE: The results of the pulse input are dis-
played as OK or NG. When [Antenna Rotation] is set to [Stop], or [Watchman]
is set to [Off] in the STBY mode, this test is skipped and "- -" is shown for both
heading and bearing.
• TUNING VOLTAGE, INDICATOR VOLTAGE, ANTENNA ROTATION, ECHO
LEVEL, TRIGGER FREQUENCY: The results of measurement are displayed.
• GYRO: The current gyrocompass reading is displayed.
• TEMPERATURE: The result of the temperature test is displayed as OK or NG
and the temperature is measured and shown.
• TOTAL ON TIME, TOTAL TX TIME: The total number of hours, for which the
radar has been powered and transmitted, are displayed.
• INPUT NMEA window: The condition of all the NMEA sentences being input to
this radar are displayed as OK or "- -". "- -" means no data input. Sentences are
updated every second.
Key check
Press each key one by one. A key's on-screen location becomes green if the key
is normal.
Buzzer check
The F1 key tests on/off for the panel buzzer or external buzzer. To stop the buzz-
er, press the F1 key again.
Knob control check
Rotate each control knob. The four digits below the on-screen location for the
GAIN, A/C SEA and A/C RAIN knob controls show the control position. Press
each knob. The knob corresponding on-screen circle changes in green if the knob
is normal.
Cursorpad check
Press each arrow and diagonal dot one by one. The on-screen location changes
in green if the key is normal.
4. Press the MENU key three times to escape from the test.
5. Press the MENU key to close the menu.
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