Diagnostic Tests - Furuno GP-90 Operator's Manual

9.5

Diagnostic Tests

Memory and I/O circuits test
1) Press [MENU ESC] and [8] to display the
SELF TESTS menu.
SELF TESTS
1. Memory, I/O Port Test
2. Keyboard Test
2. Keyboard Test
3. Test Pattern
4. Automatic Testing
GPS PROGRAM No. 4850237003
NAV PROGRAM No. 2051511-XX.XX
BOOT PROGRAM Code B
:Cursor
ENT:Enter
Figure 9-9 Diagnostic TESTS menu
2) Press [1].
MEMORY, I/O PORT TEST
PROGRAM MEMORY
SRAM
Internal Battery
DATA 1 PORT
DATA 2 PORT
DATA 4 PORT
GPS
BEACON
MENU:Escape
Figure 9-10 MEMORY, I/O PORT
TEST display
3) When testing is finished, press the
[MENU ESC] key to escape and return to
the Self Test menu. (Testing continues if
the key is not pressed.)
OK appears to the right of PROGRAM,
SRAM and Internal Battery when those
devices are normal; NG (No Good)
appears when an abnormality is found.
OK appears to the right of GPS and
BEACON when they are normal; NG and
16 hexadecimal figure appear when an
abnormality is found.
MENU:Escape
XX.XX: Version no.
OK
OK
OK
NG
NG
NG
OK
OK
9. MAINTENANCE & TROUBLESHOOTING
Whenever NG or 16 hexadecimal figure
appears contact your dealer for advice.
DATA 1 PORT, DATA 2 PORT and DATA
4 PORT show results of communication
interface test. A special test connector is
required to test those ports. NG appears
as the results of the self test when there
is no test connector attached.
4) Press the [MENU ESC] key to escape.
Note: The life of the internal battery is
approximately 5 years.
Name Type
Lithium CR2450-F2SST2L 000-144-941
Keyboard test
1) Press [MENU ESC], [8] and [2] to display
the KEYBOARD TEST screen.
KEYBOARD TEST
Press CLEAR 3 times to escape
Figure 9-11 KEYBOARD TEST screen
2) Press each key one by one. A key's
corresponding location on the screen
lights in reverse video if the key is
normal.
3) To quit the keyboard test, press the
[CLEAR] key three times. Control is
returned to the SELF TESTS menu.
4) Press the [MENU ESC] key.
Code No.
9-5