Furuno FCV-1100L - Manual (Page 69)

5. MAINTENANCE, TROUBLESHOOTING
5-5
5.5 Test Pattern
The test pattern tests for proper display of colors.
1. Rotate the [FUNCTION] switch fully clockwise to select MENU.
2. Press the [▲] key to select the menu title area at the top of the screen.
3. Press the [+] key to select SYSTEM.
4. Press the [▲] or [▼] key to select TEST MODE.
5. Press the [+] key.
6. Press the [+] key to select TEST PATTERN.
7. Press the [+] key twice to select YES in the dialog box.
[ ] : YES [ ] : NO
Test pattern selection dialog box
8. Press the [+] key successively to change the test pattern, in the sequence
below.
BLUE GREEN BLACK
WHITE
RED
16 tones
of RED 16 tones
of GREEN 16 tones
of BLUE
Test pattern sequence
9. Press the [MARKER/TLL] key more than three seconds to return to the
SYSTEM menu.
10. Rotate the [FUNCTION] switch fully counterclockwise to select EXIT.