Furuno gp-150-dual Guía Del Usuario
9. MAINTENANCE & TROUBLESHOOTING
9-6
Display test
1) Press
MENU ESC, 8 and 3 to display the
test pattern screens.
2) To change the test pattern, press the
NU/CU ENT key. Each time the key is
pressed one of the patterns shown in
Figure 9-12 appears.
Figure 9-12 appears.
TEST PATTERN
ENT:Pattern MENU:Escape
Figure 9-12 Test patterns 1 and 2
3) Press the
MENU ESC key.
Automatic testing
This feature conducts all self tests
continuously.
1) Press
continuously.
1) Press
MENU ESC, 8 and 4. Self tests are
conducted continuously in the order of
memory, I/O test, keyboard test and test
pattern.
memory, I/O test, keyboard test and test
pattern.
2) To stop testing, press the
MENU ESC
key.
3) Press the
MENU ESC key.
9.6 Interface Unit IF-2500
Fuse replacement
If the fuse blows, find the cause of the
problem before replacing it. Do not use a
fuse rated more than 0.5A, since it may
cause more serious damage to the
equipment.
problem before replacing it. Do not use a
fuse rated more than 0.5A, since it may
cause more serious damage to the
equipment.
Self test 1
The unit performs an internal self-check in
the following sequence each time power is
turned on.
1) LEDs CR7 to CR10 blink twice every 2
the following sequence each time power is
turned on.
1) LEDs CR7 to CR10 blink twice every 2
seconds.
2) ROM and RAM are tested.
3) LED CR6 blinks every second for
3) LED CR6 blinks every second for
normal operation. If an error is detected
during the test, the corresponding LED is
turned on.
during the test, the corresponding LED is
turned on.
•
When CR7 is on, ROM is defective.
•
When CR8 is on, RAM is defective.