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9. MAINTENANCE & TROUBLESHOOTING
9-5
9.5 Diagnostic Tests
Memory and I/O port test
1) Press MENU ESC and 8 to display the
SELF TESTS menu.
1. Memory, I/O Port Test
2. Keyboard Test
3. Test Pattern
4. Automatic Testing
SELF TESTS
2. Keyboard Test
MENU:Escape
:Cursor
GPS PROGRAM No. 48505640XX
NAV PROGRAM No. 2051520-01.XX
BOOT PROGRAM No. 2051521-01.XX
ENT:Enter
DGPS PROGRAM No. 08501820XX
Figure 9-9 Diagnostic TESTS menu
Note: Program version No. shown as "xx" is
a field which denotes minor changes
and is subject to change under
responsibility of the manufacturer.
2) Press 1.
PROGRAM MEMORY
SRAM
Internal Battery
DATA 1 PORT
DATA 2 PORT
DATA 4 PORT
GPS
BEACON
MEMORY, I/O PORT TEST
MENU:Escape
OK
OK
OK
NG
NG
NG
OK
OK
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 TESTS 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.
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.
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.