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6. MAINTENANCE, TROUBLESHOOTING
6-7
• 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 [Watch-
man] 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 has transmitted, are displayed.
• INPUT NMEA window: The condition of all the NMEA sentences being input to
this radar are displayed as "OK", or "- -". "- -" indicates 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 related on-screen circle changes in green if the knob is nor-
mal.
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 leave the test.
5. Press the MENU key to close the menu.