Furuno FR-8122 EU - Manual (Page 109)

6. MAINTENANCE & TROUBLESHOOTING
6-10
• If the optional ARP board is installed, its program number and test results (OK or NG)
are shown below the INPUT NMEA window. “--” shown with no ARP board. The radar
must be transmitting in order to test ARP function.
• The lamp to the left of the POWER/BRILL key and the panel backlight flash if the panel
backlight is working properly.
4. At the right side of the display there are squares, circles and ovals, and they are for checking
the controls of the display unit and remote controller.
Key check: Press each key one by one. The key’s on-screen location fills in green if the key is
functioning normally and returns to background color when the key is released. The F1 key
tests the buzzer. Press it again to silence the buzzer.
Control check: The three digits below the on-screen location for the GAIN, A/C SEA and A/C
RAIN controls show control position, and the range of indication is 0-255.
Trackball check: The three digits below the trackball’s on-screen location show the trackball’s
X-Y position, and the range of indication is -127 to +127.
5. Press the MENU key three times on the display unit or remote controller to escape from the
test.
6.9 LCD Test
The LCD pattern test checks the LCD for proper display of colors.
1. Press the MENU key to open the menu.
2. Use the trackball to choose Factory from the System menu and press the ENTER key.
3. Use the trackball to choose LCD Pattern and press the ENTER key. The screen is initially all
red. Hit the MENU key to change the color of the display, in the following sequence.
LCD test screens
4. Press the MENU key several times to close the menu.
• You may cancel the test at anytime by pressing the CANCEL/HL OFF key.
• You may adjust screen brilliance during the test with the brilliance control.
6.10 GPS Test
The FURUNO GPS receiver interfaced with this radar can be checked for proper operation as
follows:
1. Press the MENU key to open the menu.
2. Use the trackball to choose GPS and press the ENTER key.
3. Use the trackball to choose GPS Self Test and press the
ENTER key. The program no. and results of the test are
shown, as OK or NG (No Good). For NG, check the GPS
receiver.
4. Press the MENU key to close the menu.
RED MENU
key
GREEN MENU
key
BLUE MENU
key
WHITE MENU
key
BLACK MENU
key
7 tones
of gray
GPS Self Test
Program No. : 48502380XX
Result : OK
XX = Program version no.