Furuno FELCOM 12 Service Manual page 70

2. Seft-test by F7 Key (F7:Test)
Procedure
1. Press [F7] to display the Test menu.
2. Press [6].
3. Press [3]. The Communication Unit test screen appears.
4. Press [Enter] to start the test.
The message " Now Communication Unit testing" appears in blinking reverse video
during testing.
5. When the test is completed the screen shows the test result.
6. Press any key to terminate the Communication Unit Test.
Options
Test
Communication Unit
Option
Test
Communication Unit
CPU1 165-0112-10X
ROM OK
RAM OK
DP-RAM OK
Viterbi OK
Press any key to escape
6-2
Start
No
Yes
CPU2 165-0118-10X
ROM OK
RAM1 OK
RAM2 OK
EEPROM OK
GPS OK
DP-RAM OK