Furuno FA-150 - Manual (Page 52)

2. MAINTENANCE, TROUBLESHOOTING
2-5
a) The first screen in the monitor test program sequence shows program no.
b) After the program no. has been displayed, the message “PUSH KEY”
appears, in reverse video. Press each key and arrows on the CursorPad
one by one. The pressed key or arrow’s name appears next to “KEY” if the
control is functioning normally.
c) After the key test is completed, the ROM, RAM and I/O port (special test
connector required, otherwise “- -” appears) are checked. If the results of
the ROM and RAM check are shown as OK or NG (No Good). If NG
appears contact your dealer for advice.
d) After the items in c) have been checked, the contrast is automatically
changed. Check that the contrast changes.
e) The LCD is checked. All LCD segments turn on for two seconds and then
go off for three seconds, and then the screen turns black and then turns
white.
f) The test is repeated.
4. To escape from the test, press the MENU key three times when PUSH KEY
is shown in reverse video.
2.4.2 Transponder test
The transponder test consists of two tests: memory test and internal GPS
receiver test.
Memory test
The memory can be checked for proper operation and the program number
displayed as follows:
1. Press the MENU key to open the main menu.
2. Use the CursorPad to choose DIAGNOSTICS and then press the ENT key.
3. Use the CursorPad to choose TRANSPONDER TEST and then press the
ENT key.
4. Use the CursorPad to choose MEMORY TEST and then press the ENT
key. The program no. is displayed and the ROM and RAM are checked.
The results of he ROM and RAM check are shown as OK or NG (No Good).
For any NG, contact your dealer for advice.
[MEMORY TEST]
PROGRAM NO.
2450018-xx.xx
MAIN ROM : OK
MAIN RAM : OK
SUB RAM
: OK
xx.xx: Program Version No.
MEMORY TEST display
5. Press the MENU key to return to the DIAGNOSTICS sub-menu.